Patent
Atlas literature
Patent
US 9,531,412Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 depicts an active transmitting radio frequency unit (RFU) 102 in some embodiments. In one example, the active transmitting RFU 102 in environment 100 …
FIG. 2 is a block diagram of an exemplary transmitting radio frequency unit 200 in some embodiments. In some embodiments, the GaN power amplifier 224 is …
FIG. 3 is a flow chart of an exemplary method for increasing linearity and power of a wireless transmission system in some embodiments. In step 302, a modem …
FIG. 4 and may be compared to those in Fig. 5. These exemplary figures show that the efficiency drops when the GaN power amplifier is included in the Tx chain …
FIG. 5 is a graph 500 depicting gain and power added efficiency (PA E) of a standalone 15 Watt GaN power amplifier at 5.80 GHz used in a microwave transmitter as …
FIG. 6. In comparison to the GaAs power amplifier, the GaN power amplifier shows improved linearity at the same power output level. At Pout level of 35.50 dBm …
FIG. 7 is a graph 700 depicting IMD S data for a 15 W GaN power amplifier at 5.80 GHz with and without pre-distortion as a function of output power in some …
FIG. 8 is a graph of a spectral mask for 128 QAM modulated signal in 27.5 MHz bandwidth carrying 75E₁ (E l = 2.048 Mbps) traffic at 37.0 dBm output power 5.8 GHz …
FIG. 9 is a graph of a spectral mask for a 128 QAM modulated signal in 55.0 MHz bandwidth carrying 100E₁ (E l = 2.048 Mbps) traffic at 32.0 dBm output power at …
FIG. 10 is a graph depicting SNR as function of output power with and without the predistorter at 5.8 GHz for a 128 QAM modulated signal and 30 W GaN HEMT as …
FIG. 11 is a graph 1100 depicting SNR as function of output power with and without the predistorter at 5.8 GHz for a 256 QAM modulated signal and 30 W GaN HEMT …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A wireless communications system comprising: a coupler configured to sample a first transmission signal at a transmission radio frequency to generate a feedback signal; a first feedback downconverter configured to downconvert a first signal to an intermediate frequency to generate an intermediate frequency second signal, the first signal being based on the feedback signal from the transmission radio frequency; a predistorter module configured to: receive an intermediate frequency third signal, the intermediate frequency third signal being based on the intermediate frequency second signal; compare the intermediate frequency third signal to an intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal; and add inverse distortion to an output signal to generate a distorted output signal with added distortion, the inverse distortion added to the output signal being based on the existing distortion detected in the intermediate frequency third signal; a second upconverter configured to upconvert an intermediate frequency fourth signal to generate a transmission radio frequency fifth signal, the intermediate frequency fourth signal being based on the distorted output signal to the transmission radio frequency; a gallium nitride (GaN) power amplifier configured to amplify power of a transmission radio frequency sixth signal to generate a transmission radio frequency amplified signal, the GaN power amplifier adding amplifier distortion, wherein at least some of the added distortion from the predistorter module cancels at least some of the amplifier distortion, the transmission radio frequency sixth signal being based on the transmission radio frequency fifth signal; and an antenna configured to transmit a transmission radio frequency seventh signal, the seventh signal being based on the transmission radio frequency amplified signal.
The wireless communications system of claim 1, wherein the input signal is at the intermediate frequency. SMRH:479748524.1 2 Application Serial No. 14/704,468 Docket No. 18LZ-211470
The wireless communications system of claim 1, further comprising a waveguide configured to provide the transmission radio frequency seventh signal to the antenna.
The wireless communications system of claim 1, wherein the predistorter module is configured to add inverse distortion to an output signal upon a determination that the existing distortion is greater than a first predistortion threshold.
The wireless communications system of claim 1, further comprising a first automatic gain adjuster (AGC) configured to adjust a gain of the intermediate frequency second signal before the predistorter module is configured to receive the intermediate frequency third signal.
The wireless communications system of claim 1, further comprising an oscillator configured to assist the first feedback downconverter to downconvert the first signal and configured to assist the second upconverter configured to upconvert the intermediate frequency fourth signal.
The wireless communications system of claim 1, wherein the wireless communications system is a microwave wireless communications system.
The wireless communications system of claim [[1]] 7, further comprising a second AGC configured to adjust a gain of the intermediate frequency input signal before the predistorter module is configured to compare the intermediate frequency third signal to the intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal.
A method comprising: sampling a first transmission signal at a transmission radio frequency to generate a feedback signal; SMRH:479748524.1 3 Application Serial No. 14/704,468 Docket No. 18LZ-211470 downconverting a first signal to an intermediate frequency to generate an intermediate frequency second signal, the first signal being based on the feedback signal from the transmission radio frequency; receiving, by a predistorter module, an intermediate frequency third signal, the intermediate frequency third signal being based on the intermediate frequency second signal; comparing, by the predistorter module, the intermediate frequency third signal to an intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal; adding inverse distortion, by the predistorter module, to an output signal to generate a distorted output signal with added distortion, the inverse distortion added to the output signal being based on the existing distortion detected in the intermediate frequency third signal; upconverting an intermediate frequency fourth signal to generate a transmission radio frequency fifth signal, the intermediate frequency fourth signal being based on the distorted output signal to the transmission radio frequency; amplifying power, by a gallium nitride (GaN) power amplifier, of a transmission radio frequency sixth signal to generate a transmission radio frequency amplified signal, the GaN power amplifier adding amplifier distortion, wherein at least some of the added distortion from the predistorter module cancels at least some of the amplifier distortion, the transmission radio frequency sixth signal being based on the transmission radio frequency fifth signal; and transmitting, by an antenna, a transmission radio frequency seventh signal, the seventh signal being based on the transmission radio frequency amplified signal.
The method of claim 11, wherein the input signal is at the intermediate frequency.
The method of claim 11, further comprising providing the transmission radio frequency seventh signal to the antenna via a waveguide.
The method of claim 11, wherein adding inverse distortion to [[an]] the output signal comprises adding inverse distortion to the output signal upon a determination that the existing distortion is greater than a first predistortion threshold. SMRH:479748524.1 4 Application Serial No. 14/704,468 Docket No. 18LZ-211470
The method of claim 11, further comprising adjusting a gain of the intermediate frequency second signal before the predistorter module receives the intermediate frequency third signal.
The method of claim 11, further comprising adjusting a gain of the intermediate frequency input signal before the predistorter module compares the intermediate frequency third signal to the intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal.
The method of claim 11, further comprising assisting, by an oscillator, the downconversion of the first signal and the upconversion of the intermediate frequency fourth signal.
The method of claim 11, wherein the transmission radio frequency seventh signal is a microwave signal. SMRH:479748524.1
Layer stacks claimed or described, ordered top of device to substrate.
GaN power amplifier based wireless communications system
No layer stack recorded.
Materials described outside the worked examples.
gallium nitride
GaN
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 8 is a graph of a spectral mask for 128 QAM modulated signal in 27.5 MHz bandwidth carrying 75E₁ (E l = 2.048 Mbps) traffic at 37.0 dBm output power 5.8 GHz …
Related documents with shared materials, methods, properties, or citations.
ANSWER CLASSIFIER AND REPRESENTATION GENERATOR FOR QUESTION-ANSWERING SYSTEM USING GAN, AND COMPUTER PROGRAM FOR TRAINING THE REPRESENTATION GENERATOR
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Patent
Atlas literature
Patent
US 9,531,412Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 depicts an active transmitting radio frequency unit (RFU) 102 in some embodiments. In one example, the active transmitting RFU 102 in environment 100 …
FIG. 2 is a block diagram of an exemplary transmitting radio frequency unit 200 in some embodiments. In some embodiments, the GaN power amplifier 224 is …
FIG. 3 is a flow chart of an exemplary method for increasing linearity and power of a wireless transmission system in some embodiments. In step 302, a modem …
FIG. 4 and may be compared to those in Fig. 5. These exemplary figures show that the efficiency drops when the GaN power amplifier is included in the Tx chain …
FIG. 5 is a graph 500 depicting gain and power added efficiency (PA E) of a standalone 15 Watt GaN power amplifier at 5.80 GHz used in a microwave transmitter as …
FIG. 6. In comparison to the GaAs power amplifier, the GaN power amplifier shows improved linearity at the same power output level. At Pout level of 35.50 dBm …
FIG. 7 is a graph 700 depicting IMD S data for a 15 W GaN power amplifier at 5.80 GHz with and without pre-distortion as a function of output power in some …
FIG. 8 is a graph of a spectral mask for 128 QAM modulated signal in 27.5 MHz bandwidth carrying 75E₁ (E l = 2.048 Mbps) traffic at 37.0 dBm output power 5.8 GHz …
FIG. 9 is a graph of a spectral mask for a 128 QAM modulated signal in 55.0 MHz bandwidth carrying 100E₁ (E l = 2.048 Mbps) traffic at 32.0 dBm output power at …
FIG. 10 is a graph depicting SNR as function of output power with and without the predistorter at 5.8 GHz for a 128 QAM modulated signal and 30 W GaN HEMT as …
FIG. 11 is a graph 1100 depicting SNR as function of output power with and without the predistorter at 5.8 GHz for a 256 QAM modulated signal and 30 W GaN HEMT …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A wireless communications system comprising: a coupler configured to sample a first transmission signal at a transmission radio frequency to generate a feedback signal; a first feedback downconverter configured to downconvert a first signal to an intermediate frequency to generate an intermediate frequency second signal, the first signal being based on the feedback signal from the transmission radio frequency; a predistorter module configured to: receive an intermediate frequency third signal, the intermediate frequency third signal being based on the intermediate frequency second signal; compare the intermediate frequency third signal to an intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal; and add inverse distortion to an output signal to generate a distorted output signal with added distortion, the inverse distortion added to the output signal being based on the existing distortion detected in the intermediate frequency third signal; a second upconverter configured to upconvert an intermediate frequency fourth signal to generate a transmission radio frequency fifth signal, the intermediate frequency fourth signal being based on the distorted output signal to the transmission radio frequency; a gallium nitride (GaN) power amplifier configured to amplify power of a transmission radio frequency sixth signal to generate a transmission radio frequency amplified signal, the GaN power amplifier adding amplifier distortion, wherein at least some of the added distortion from the predistorter module cancels at least some of the amplifier distortion, the transmission radio frequency sixth signal being based on the transmission radio frequency fifth signal; and an antenna configured to transmit a transmission radio frequency seventh signal, the seventh signal being based on the transmission radio frequency amplified signal.
The wireless communications system of claim 1, wherein the input signal is at the intermediate frequency. SMRH:479748524.1 2 Application Serial No. 14/704,468 Docket No. 18LZ-211470
The wireless communications system of claim 1, further comprising a waveguide configured to provide the transmission radio frequency seventh signal to the antenna.
The wireless communications system of claim 1, wherein the predistorter module is configured to add inverse distortion to an output signal upon a determination that the existing distortion is greater than a first predistortion threshold.
The wireless communications system of claim 1, further comprising a first automatic gain adjuster (AGC) configured to adjust a gain of the intermediate frequency second signal before the predistorter module is configured to receive the intermediate frequency third signal.
The wireless communications system of claim 1, further comprising an oscillator configured to assist the first feedback downconverter to downconvert the first signal and configured to assist the second upconverter configured to upconvert the intermediate frequency fourth signal.
The wireless communications system of claim 1, wherein the wireless communications system is a microwave wireless communications system.
The wireless communications system of claim [[1]] 7, further comprising a second AGC configured to adjust a gain of the intermediate frequency input signal before the predistorter module is configured to compare the intermediate frequency third signal to the intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal.
A method comprising: sampling a first transmission signal at a transmission radio frequency to generate a feedback signal; SMRH:479748524.1 3 Application Serial No. 14/704,468 Docket No. 18LZ-211470 downconverting a first signal to an intermediate frequency to generate an intermediate frequency second signal, the first signal being based on the feedback signal from the transmission radio frequency; receiving, by a predistorter module, an intermediate frequency third signal, the intermediate frequency third signal being based on the intermediate frequency second signal; comparing, by the predistorter module, the intermediate frequency third signal to an intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal; adding inverse distortion, by the predistorter module, to an output signal to generate a distorted output signal with added distortion, the inverse distortion added to the output signal being based on the existing distortion detected in the intermediate frequency third signal; upconverting an intermediate frequency fourth signal to generate a transmission radio frequency fifth signal, the intermediate frequency fourth signal being based on the distorted output signal to the transmission radio frequency; amplifying power, by a gallium nitride (GaN) power amplifier, of a transmission radio frequency sixth signal to generate a transmission radio frequency amplified signal, the GaN power amplifier adding amplifier distortion, wherein at least some of the added distortion from the predistorter module cancels at least some of the amplifier distortion, the transmission radio frequency sixth signal being based on the transmission radio frequency fifth signal; and transmitting, by an antenna, a transmission radio frequency seventh signal, the seventh signal being based on the transmission radio frequency amplified signal.
The method of claim 11, wherein the input signal is at the intermediate frequency.
The method of claim 11, further comprising providing the transmission radio frequency seventh signal to the antenna via a waveguide.
The method of claim 11, wherein adding inverse distortion to [[an]] the output signal comprises adding inverse distortion to the output signal upon a determination that the existing distortion is greater than a first predistortion threshold. SMRH:479748524.1 4 Application Serial No. 14/704,468 Docket No. 18LZ-211470
The method of claim 11, further comprising adjusting a gain of the intermediate frequency second signal before the predistorter module receives the intermediate frequency third signal.
The method of claim 11, further comprising adjusting a gain of the intermediate frequency input signal before the predistorter module compares the intermediate frequency third signal to the intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal.
The method of claim 11, further comprising assisting, by an oscillator, the downconversion of the first signal and the upconversion of the intermediate frequency fourth signal.
The method of claim 11, wherein the transmission radio frequency seventh signal is a microwave signal. SMRH:479748524.1
Layer stacks claimed or described, ordered top of device to substrate.
GaN power amplifier based wireless communications system
No layer stack recorded.
Materials described outside the worked examples.
gallium nitride
GaN
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 8 is a graph of a spectral mask for 128 QAM modulated signal in 27.5 MHz bandwidth carrying 75E₁ (E l = 2.048 Mbps) traffic at 37.0 dBm output power 5.8 GHz …
Related documents with shared materials, methods, properties, or citations.
ANSWER CLASSIFIER AND REPRESENTATION GENERATOR FOR QUESTION-ANSWERING SYSTEM USING GAN, AND COMPUTER PROGRAM FOR TRAINING THE REPRESENTATION GENERATOR
KNOWLEDGE AGGREGATION FOR GAN-BASED ANOMALY DETECTORS
Patent
Atlas literature
Patent
US 9,531,412Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 depicts an active transmitting radio frequency unit (RFU) 102 in some embodiments. In one example, the active transmitting RFU 102 in environment 100 …
FIG. 2 is a block diagram of an exemplary transmitting radio frequency unit 200 in some embodiments. In some embodiments, the GaN power amplifier 224 is …
FIG. 3 is a flow chart of an exemplary method for increasing linearity and power of a wireless transmission system in some embodiments. In step 302, a modem …
FIG. 4 and may be compared to those in Fig. 5. These exemplary figures show that the efficiency drops when the GaN power amplifier is included in the Tx chain …
FIG. 5 is a graph 500 depicting gain and power added efficiency (PA E) of a standalone 15 Watt GaN power amplifier at 5.80 GHz used in a microwave transmitter as …
FIG. 6. In comparison to the GaAs power amplifier, the GaN power amplifier shows improved linearity at the same power output level. At Pout level of 35.50 dBm …
FIG. 7 is a graph 700 depicting IMD S data for a 15 W GaN power amplifier at 5.80 GHz with and without pre-distortion as a function of output power in some …
FIG. 8 is a graph of a spectral mask for 128 QAM modulated signal in 27.5 MHz bandwidth carrying 75E₁ (E l = 2.048 Mbps) traffic at 37.0 dBm output power 5.8 GHz …
FIG. 9 is a graph of a spectral mask for a 128 QAM modulated signal in 55.0 MHz bandwidth carrying 100E₁ (E l = 2.048 Mbps) traffic at 32.0 dBm output power at …
FIG. 10 is a graph depicting SNR as function of output power with and without the predistorter at 5.8 GHz for a 128 QAM modulated signal and 30 W GaN HEMT as …
FIG. 11 is a graph 1100 depicting SNR as function of output power with and without the predistorter at 5.8 GHz for a 256 QAM modulated signal and 30 W GaN HEMT …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A wireless communications system comprising: a coupler configured to sample a first transmission signal at a transmission radio frequency to generate a feedback signal; a first feedback downconverter configured to downconvert a first signal to an intermediate frequency to generate an intermediate frequency second signal, the first signal being based on the feedback signal from the transmission radio frequency; a predistorter module configured to: receive an intermediate frequency third signal, the intermediate frequency third signal being based on the intermediate frequency second signal; compare the intermediate frequency third signal to an intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal; and add inverse distortion to an output signal to generate a distorted output signal with added distortion, the inverse distortion added to the output signal being based on the existing distortion detected in the intermediate frequency third signal; a second upconverter configured to upconvert an intermediate frequency fourth signal to generate a transmission radio frequency fifth signal, the intermediate frequency fourth signal being based on the distorted output signal to the transmission radio frequency; a gallium nitride (GaN) power amplifier configured to amplify power of a transmission radio frequency sixth signal to generate a transmission radio frequency amplified signal, the GaN power amplifier adding amplifier distortion, wherein at least some of the added distortion from the predistorter module cancels at least some of the amplifier distortion, the transmission radio frequency sixth signal being based on the transmission radio frequency fifth signal; and an antenna configured to transmit a transmission radio frequency seventh signal, the seventh signal being based on the transmission radio frequency amplified signal.
The wireless communications system of claim 1, wherein the input signal is at the intermediate frequency. SMRH:479748524.1 2 Application Serial No. 14/704,468 Docket No. 18LZ-211470
The wireless communications system of claim 1, further comprising a waveguide configured to provide the transmission radio frequency seventh signal to the antenna.
The wireless communications system of claim 1, wherein the predistorter module is configured to add inverse distortion to an output signal upon a determination that the existing distortion is greater than a first predistortion threshold.
The wireless communications system of claim 1, further comprising a first automatic gain adjuster (AGC) configured to adjust a gain of the intermediate frequency second signal before the predistorter module is configured to receive the intermediate frequency third signal.
The wireless communications system of claim 1, further comprising an oscillator configured to assist the first feedback downconverter to downconvert the first signal and configured to assist the second upconverter configured to upconvert the intermediate frequency fourth signal.
The wireless communications system of claim 1, wherein the wireless communications system is a microwave wireless communications system.
The wireless communications system of claim [[1]] 7, further comprising a second AGC configured to adjust a gain of the intermediate frequency input signal before the predistorter module is configured to compare the intermediate frequency third signal to the intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal.
A method comprising: sampling a first transmission signal at a transmission radio frequency to generate a feedback signal; SMRH:479748524.1 3 Application Serial No. 14/704,468 Docket No. 18LZ-211470 downconverting a first signal to an intermediate frequency to generate an intermediate frequency second signal, the first signal being based on the feedback signal from the transmission radio frequency; receiving, by a predistorter module, an intermediate frequency third signal, the intermediate frequency third signal being based on the intermediate frequency second signal; comparing, by the predistorter module, the intermediate frequency third signal to an intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal; adding inverse distortion, by the predistorter module, to an output signal to generate a distorted output signal with added distortion, the inverse distortion added to the output signal being based on the existing distortion detected in the intermediate frequency third signal; upconverting an intermediate frequency fourth signal to generate a transmission radio frequency fifth signal, the intermediate frequency fourth signal being based on the distorted output signal to the transmission radio frequency; amplifying power, by a gallium nitride (GaN) power amplifier, of a transmission radio frequency sixth signal to generate a transmission radio frequency amplified signal, the GaN power amplifier adding amplifier distortion, wherein at least some of the added distortion from the predistorter module cancels at least some of the amplifier distortion, the transmission radio frequency sixth signal being based on the transmission radio frequency fifth signal; and transmitting, by an antenna, a transmission radio frequency seventh signal, the seventh signal being based on the transmission radio frequency amplified signal.
The method of claim 11, wherein the input signal is at the intermediate frequency.
The method of claim 11, further comprising providing the transmission radio frequency seventh signal to the antenna via a waveguide.
The method of claim 11, wherein adding inverse distortion to [[an]] the output signal comprises adding inverse distortion to the output signal upon a determination that the existing distortion is greater than a first predistortion threshold. SMRH:479748524.1 4 Application Serial No. 14/704,468 Docket No. 18LZ-211470
The method of claim 11, further comprising adjusting a gain of the intermediate frequency second signal before the predistorter module receives the intermediate frequency third signal.
The method of claim 11, further comprising adjusting a gain of the intermediate frequency input signal before the predistorter module compares the intermediate frequency third signal to the intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal.
The method of claim 11, further comprising assisting, by an oscillator, the downconversion of the first signal and the upconversion of the intermediate frequency fourth signal.
The method of claim 11, wherein the transmission radio frequency seventh signal is a microwave signal. SMRH:479748524.1
Layer stacks claimed or described, ordered top of device to substrate.
GaN power amplifier based wireless communications system
No layer stack recorded.
Materials described outside the worked examples.
gallium nitride
GaN
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 8 is a graph of a spectral mask for 128 QAM modulated signal in 27.5 MHz bandwidth carrying 75E₁ (E l = 2.048 Mbps) traffic at 37.0 dBm output power 5.8 GHz …
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Patent
Atlas literature
Patent
US 9,531,412Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 depicts an active transmitting radio frequency unit (RFU) 102 in some embodiments. In one example, the active transmitting RFU 102 in environment 100 …
FIG. 2 is a block diagram of an exemplary transmitting radio frequency unit 200 in some embodiments. In some embodiments, the GaN power amplifier 224 is …
FIG. 3 is a flow chart of an exemplary method for increasing linearity and power of a wireless transmission system in some embodiments. In step 302, a modem …
FIG. 4 and may be compared to those in Fig. 5. These exemplary figures show that the efficiency drops when the GaN power amplifier is included in the Tx chain …
FIG. 5 is a graph 500 depicting gain and power added efficiency (PA E) of a standalone 15 Watt GaN power amplifier at 5.80 GHz used in a microwave transmitter as …
FIG. 6. In comparison to the GaAs power amplifier, the GaN power amplifier shows improved linearity at the same power output level. At Pout level of 35.50 dBm …
FIG. 7 is a graph 700 depicting IMD S data for a 15 W GaN power amplifier at 5.80 GHz with and without pre-distortion as a function of output power in some …
FIG. 8 is a graph of a spectral mask for 128 QAM modulated signal in 27.5 MHz bandwidth carrying 75E₁ (E l = 2.048 Mbps) traffic at 37.0 dBm output power 5.8 GHz …
FIG. 9 is a graph of a spectral mask for a 128 QAM modulated signal in 55.0 MHz bandwidth carrying 100E₁ (E l = 2.048 Mbps) traffic at 32.0 dBm output power at …
FIG. 10 is a graph depicting SNR as function of output power with and without the predistorter at 5.8 GHz for a 128 QAM modulated signal and 30 W GaN HEMT as …
FIG. 11 is a graph 1100 depicting SNR as function of output power with and without the predistorter at 5.8 GHz for a 256 QAM modulated signal and 30 W GaN HEMT …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A wireless communications system comprising: a coupler configured to sample a first transmission signal at a transmission radio frequency to generate a feedback signal; a first feedback downconverter configured to downconvert a first signal to an intermediate frequency to generate an intermediate frequency second signal, the first signal being based on the feedback signal from the transmission radio frequency; a predistorter module configured to: receive an intermediate frequency third signal, the intermediate frequency third signal being based on the intermediate frequency second signal; compare the intermediate frequency third signal to an intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal; and add inverse distortion to an output signal to generate a distorted output signal with added distortion, the inverse distortion added to the output signal being based on the existing distortion detected in the intermediate frequency third signal; a second upconverter configured to upconvert an intermediate frequency fourth signal to generate a transmission radio frequency fifth signal, the intermediate frequency fourth signal being based on the distorted output signal to the transmission radio frequency; a gallium nitride (GaN) power amplifier configured to amplify power of a transmission radio frequency sixth signal to generate a transmission radio frequency amplified signal, the GaN power amplifier adding amplifier distortion, wherein at least some of the added distortion from the predistorter module cancels at least some of the amplifier distortion, the transmission radio frequency sixth signal being based on the transmission radio frequency fifth signal; and an antenna configured to transmit a transmission radio frequency seventh signal, the seventh signal being based on the transmission radio frequency amplified signal.
The wireless communications system of claim 1, wherein the input signal is at the intermediate frequency. SMRH:479748524.1 2 Application Serial No. 14/704,468 Docket No. 18LZ-211470
The wireless communications system of claim 1, further comprising a waveguide configured to provide the transmission radio frequency seventh signal to the antenna.
The wireless communications system of claim 1, wherein the predistorter module is configured to add inverse distortion to an output signal upon a determination that the existing distortion is greater than a first predistortion threshold.
The wireless communications system of claim 1, further comprising a first automatic gain adjuster (AGC) configured to adjust a gain of the intermediate frequency second signal before the predistorter module is configured to receive the intermediate frequency third signal.
The wireless communications system of claim 1, further comprising an oscillator configured to assist the first feedback downconverter to downconvert the first signal and configured to assist the second upconverter configured to upconvert the intermediate frequency fourth signal.
The wireless communications system of claim 1, wherein the wireless communications system is a microwave wireless communications system.
The wireless communications system of claim [[1]] 7, further comprising a second AGC configured to adjust a gain of the intermediate frequency input signal before the predistorter module is configured to compare the intermediate frequency third signal to the intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal.
A method comprising: sampling a first transmission signal at a transmission radio frequency to generate a feedback signal; SMRH:479748524.1 3 Application Serial No. 14/704,468 Docket No. 18LZ-211470 downconverting a first signal to an intermediate frequency to generate an intermediate frequency second signal, the first signal being based on the feedback signal from the transmission radio frequency; receiving, by a predistorter module, an intermediate frequency third signal, the intermediate frequency third signal being based on the intermediate frequency second signal; comparing, by the predistorter module, the intermediate frequency third signal to an intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal; adding inverse distortion, by the predistorter module, to an output signal to generate a distorted output signal with added distortion, the inverse distortion added to the output signal being based on the existing distortion detected in the intermediate frequency third signal; upconverting an intermediate frequency fourth signal to generate a transmission radio frequency fifth signal, the intermediate frequency fourth signal being based on the distorted output signal to the transmission radio frequency; amplifying power, by a gallium nitride (GaN) power amplifier, of a transmission radio frequency sixth signal to generate a transmission radio frequency amplified signal, the GaN power amplifier adding amplifier distortion, wherein at least some of the added distortion from the predistorter module cancels at least some of the amplifier distortion, the transmission radio frequency sixth signal being based on the transmission radio frequency fifth signal; and transmitting, by an antenna, a transmission radio frequency seventh signal, the seventh signal being based on the transmission radio frequency amplified signal.
The method of claim 11, wherein the input signal is at the intermediate frequency.
The method of claim 11, further comprising providing the transmission radio frequency seventh signal to the antenna via a waveguide.
The method of claim 11, wherein adding inverse distortion to [[an]] the output signal comprises adding inverse distortion to the output signal upon a determination that the existing distortion is greater than a first predistortion threshold. SMRH:479748524.1 4 Application Serial No. 14/704,468 Docket No. 18LZ-211470
The method of claim 11, further comprising adjusting a gain of the intermediate frequency second signal before the predistorter module receives the intermediate frequency third signal.
The method of claim 11, further comprising adjusting a gain of the intermediate frequency input signal before the predistorter module compares the intermediate frequency third signal to the intermediate frequency input signal to detect existing distortion in the intermediate frequency third signal.
The method of claim 11, further comprising assisting, by an oscillator, the downconversion of the first signal and the upconversion of the intermediate frequency fourth signal.
The method of claim 11, wherein the transmission radio frequency seventh signal is a microwave signal. SMRH:479748524.1
Layer stacks claimed or described, ordered top of device to substrate.
GaN power amplifier based wireless communications system
No layer stack recorded.
Materials described outside the worked examples.
gallium nitride
GaN
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 8 is a graph of a spectral mask for 128 QAM modulated signal in 27.5 MHz bandwidth carrying 75E₁ (E l = 2.048 Mbps) traffic at 37.0 dBm output power 5.8 GHz …
Related documents with shared materials, methods, properties, or citations.
ANSWER CLASSIFIER AND REPRESENTATION GENERATOR FOR QUESTION-ANSWERING SYSTEM USING GAN, AND COMPUTER PROGRAM FOR TRAINING THE REPRESENTATION GENERATOR
KNOWLEDGE AGGREGATION FOR GAN-BASED ANOMALY DETECTORS
FIG. 9 is a graph of a spectral mask for a 128 QAM modulated signal in 55.0 MHz bandwidth carrying 100E₁ (E l = 2.048 Mbps) traffic at 32.0 dBm output power at …
FIG. 9 is a graph of a spectral mask for a 128 QAM modulated signal in 55.0 MHz bandwidth carrying 100E₁ (E l = 2.048 Mbps) traffic at 32.0 dBm output power at …
FIG. 9 is a graph of a spectral mask for a 128 QAM modulated signal in 55.0 MHz bandwidth carrying 100E₁ (E l = 2.048 Mbps) traffic at 32.0 dBm output power at …
FIG. 9 is a graph of a spectral mask for a 128 QAM modulated signal in 55.0 MHz bandwidth carrying 100E₁ (E l = 2.048 Mbps) traffic at 32.0 dBm output power at …
