# US 11,444,583 B2 · Systems and methods for optimizing amplifier operations > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,444,583 B2 - Document ID: US11444583B2 - Status: Granted - Kind: B2 - Application number: 16/737,783 - Filed: 2020-01-08 - Published: 2020-07-16 - Granted: 2022-09-13 - Earliest claimed: 2013-03-14 - Assignees: pSemi Corporation - Applicants: pSemi Corporation - Inventors: Dan William Nobbe; David Halchin - Web page: https://patentgrep.com/patent/US11444583B2 ## CPC - H03F 1/3223: {using feed-forward (H03F1/3211 takes precedence)} - H03F 1/0205: {in transistor amplifiers} - H03F 1/30: Modifications of amplifiers to reduce influence of variations of temperature or supply voltage {or other physical parameters (in differential amplifiers H03F3/45479)} - H03F 3/193: with field-effect devices (H03F3/195 takes precedence) - H03F 3/195: in integrated circuits - H03F 3/72: Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal - H03G 3/3036: {in high-frequency amplifiers or in frequency-changers (H03G3/3052, H03G3/32, H03G3/34 take precedence)} - H03F 2200/105: A non-specified detector of the power of a signal being used in an amplifying circuit - H03F 2200/324: An amplitude modulator or demodulator being used in the amplifier circuit - H03F 2200/387: A circuit being added at the output of an amplifier to adapt the output impedance of the amplifier - H03F 2200/451: the amplifier being a radio frequency amplifier - H03F 2200/468: the temperature being sensed - H03F: AMPLIFIERS - H03G: CONTROL OF AMPLIFICATION ## Abstract Methods and systems for optimizing amplifier operations are described. The described methods and systems particularly describe a feed-forward control circuit that may also be used as a feed-back control circuit in certain applications. The feed-forward control circuit provides a control signal that may be used to configure an amplifier in a variety of ways. ## Claims ### Claim 1 A system for optimizing amplifier operations, including: (a) an amplifier configured to receive an input signal and a control signal, and generate an output signal in response to the input signal and the control signal, the output signal having a desired characteristic that includes at least one of a power level, amplifier gain, a voltage range, or a current level, wherein the control signal modifies an operating characteristic of the amplifier; and (b) a feed-forward control circuit, coupled to the amplifier, configured to receive the input signal, analyze the input signal using a bandwidth detector, generate the control signal based on the analyzed input signal, and provide the control signal to the amplifier; wherein the feed-forward control circuit is further configured to receive as inputs at least one of (a) a control data signal from a control circuit and/or (b) at least one derived data signal from a measurement circuit, wherein any of such inputs may be used in addition to, or in lieu of, the input signal to generate the control signal; and wherein the at least one derived data signal represents one or more of: power level data obtained from a monitored output signal from the amplifier, temperature data, power supply data, battery data, biasing data, signal level data, voltage level data, frequency data, power level data, logic level conditions, switch position data, physical location data, mode of operation of the amplifier, a modulation format of the output signal, and/or load mismatch data. ### Claim 2 (depends on 1) The system of claim 1, wherein the amplifier includes a signal modification block, and wherein the control signal configures the signal modification block. ### Claim 3 (depends on 2) The system of claim 2, wherein the signal modification block includes one or more of: a gain stage block, an attenuator block, a bias adjustment block, a power supply control block, a signal delay block, or a path modifier block, wherein at least one included block has one or more parameters alterable by the control signal input to reconfigure the signal modification block. ### Claim 4 (depends on 1) The system of claim 1, wherein the amplifier includes a load matching block, and wherein the control signal configures the load matching block. ### Claim 5 (depends on 4) The system of claim 4, wherein the load matching block is configurable by one or more of: matching impedances to provide a desired Voltage Standing Wave Ratio (VSWR) or desired power level transfer from the amplifier into a load, switching one or more impedance elements in or out of circuit in a tunable matching network, providing one or more control voltages to one or more variable impedances in the tunable matching network, changing a bias voltage, changing a bias current, changing a supply voltage, switching in or out one or more stages of a multi-stage gain unit, modifying a physical size of one or more elements, modifying amplifier gain, modifying amplifier phase, modifying amplifier compression points, and/or enabling or disabling one or more elements. ### Claim 6 A system for optimizing amplifier operations, including: (a) an amplifier configured to receive an input signal and a control signal, and generate an output signal in response to the input signal and the control signal, the output signal having a desired characteristic that includes at least one of a power level, amplifier gain, a voltage range, or a current level, wherein the control signal modifies an operating characteristic of the amplifier; and (b) a feed-forward control circuit, coupled to the amplifier, configured to receive the input signal, analyze the input signal using a modulation detector for detecting the modulation characteristics of the input signal, generate the control signal based on the analyzed input signal, and provide the control signal to the amplifier; wherein the feed-forward control circuit is further configured to receive as inputs at least one of (a) a control data signal from a control circuit and/or (b) at least one derived data signal from a measurement circuit, wherein any of such inputs may be used in addition to, or in lieu of, the input signal to generate the control signal; and wherein the at least one derived data signal represents one or more of: power level data obtained from a monitored output signal from the amplifier, temperature data, power supply data, battery data, biasing data, signal level data, voltage level data, frequency data, power level data, logic level conditions, switch position data, physical location data, mode of operation of the amplifier, a modulation format of the output signal, and/or load mismatch data. ### Claim 7 (depends on 6) The system of claim 6, wherein the amplifier includes a signal modification block, and wherein the control signal configures the signal modification block. ### Claim 8 (depends on 7) The system of claim 7, wherein the signal modification block includes one or more of: a gain stage block, an attenuator block, a bias adjustment block, a power supply control block, a signal delay block, or a path modifier block, wherein at least one included block has one or more parameters alterable by the control signal input to reconfigure the signal modification block. ### Claim 9 (depends on 6) The system of claim 6, wherein the amplifier includes a load matching block, and wherein the control signal configures the load matching block. ### Claim 10 (depends on 9) The system of claim 9, wherein the load matching block is configurable by one or more of: matching impedances to provide a desired Voltage Standing Wave Ratio (VSWR) or desired power level transfer from the amplifier into a load, switching one or more impedance elements in or out of circuit in a tunable matching network, providing one or more control voltages to one or more variable impedances in the tunable matching network, changing a bias voltage, changing a bias current, changing a supply voltage, switching in or out one or more stages of a multi-stage gain unit, modifying a physical size of one or more elements, modifying amplifier gain, modifying amplifier phase, modifying amplifier compression points, and/or enabling or disabling one or more elements. ### Claim 11 A system for optimizing amplifier operations, including: (a) an amplifier configured to receive an input signal and a control signal, and generate an output signal in response to the input signal and the control signal, the output signal having a desired characteristic that includes at least one of a power level, amplifier gain, a voltage range, or a current level; and (b) a feed-forward control circuit, coupled to the amplifier, configured to receive the input signal, analyze the input signal using a spectral analyzer, generate the control signal based on the analyzed input signal, and provide the control signal to the amplifier. ### Claim 12 (depends on 11) The system of claim 11, wherein the feed-forward control circuit is further configured to receive as inputs at least one of (a) a control data signal from a control circuit and/or (b) at least one derived data signal from a measurement circuit, wherein any of such inputs may be used in addition to, or in lieu of, the input signal to generate the control signal. ### Claim 13 (depends on 12) The system of claim 12, wherein the at least one derived data signal represents one or more of: power level data obtained from a monitored output signal from the amplifier, temperature data, power supply data, battery data, biasing data, signal level data, voltage level data, frequency data, power level data, logic level conditions, switch position data, physical location data, mode of operation of the amplifier, a modulation format of the output signal, and/or load mismatch data. ### Claim 14 (depends on 11) The system of claim 11, wherein the amplifier includes a signal modification block, and wherein the control signal configures the signal modification block. ### Claim 15 (depends on 14) The system of claim 14, wherein the signal modification block includes one or more of: a gain stage block, an attenuator block, a bias adjustment block, a power supply control block, a signal delay block, or a path modifier block, wherein at least one included block has one or more parameters alterable by the control signal input to reconfigure the signal modification block. ### Claim 16 (depends on 11) The system of claim 11, wherein the amplifier includes a load matching block, and wherein the control signal configures the load matching block. ### Claim 17 (depends on 16) The system of claim 16, wherein the load matching block is configurable by one or more of: matching impedances to provide a desired Voltage Standing Wave Ratio (VSWR) or desired power level transfer from the amplifier into a load, switching one or more impedance elements in or out of circuit in a tunable matching network, providing one or more control voltages to one or more variable impedances in the tunable matching network, changing a bias voltage, changing a bias current, changing a supply voltage, switching in or out one or more stages of a multi-stage gain unit, modifying a physical size of one or more elements, modifying amplifier gain, modifying amplifier phase, modifying amplifier compression points, and/or enabling or disabling one or more elements. ### Claim 18 A system for optimizing amplifier operations, including: (a) an amplifier configured to receive an input signal and a control signal, and generate an output signal in response to the input signal and the control signal, the output signal having a desired characteristic that includes at least one of a power level, amplifier gain, a voltage range, or a current level, wherein the control signal modifies an operating characteristic of the amplifier; and (b) a feed-forward control circuit, coupled to the amplifier, configured to receive the input signal, analyze the input signal using a bandwidth detector, generate the control signal based on the analyzed input signal, and provide the control signal to the amplifier; wherein the amplifier includes a load matching block, and wherein the control signal configures the load matching block. ### Claim 19 (depends on 18) The system of claim 18, wherein the load matching block is configurable by one or more of: matching impedances to provide a desired Voltage Standing Wave Ratio (VSWR) or desired power level transfer from the amplifier into a load, switching one or more impedance elements in or out of circuit in a tunable matching network, providing one or more control voltages to one or more variable impedances in the tunable matching network, changing a bias voltage, changing a bias current, changing a supply voltage, switching in or out one or more stages of a multi-stage gain unit, modifying a physical size of one or more elements, modifying amplifier gain, modifying amplifier phase, modifying amplifier compression points, and/or enabling or disabling one or more elements. ### Claim 20 A system for optimizing amplifier operations, including: (a) an amplifier configured to receive an input signal and a control signal, and generate an output signal in response to the input signal and the control signal, the output signal having a desired characteristic that includes at least one of a power level, amplifier gain, a voltage range, or a current level, wherein the control signal modifies an operating characteristic of the amplifier; and (b) a feed-forward control circuit, coupled to the amplifier, configured to receive the input signal, analyze the input signal using a modulation detector for detecting the modulation characteristics of the input signal, generate the control signal based on the analyzed input signal, and provide the control signal to the amplifier; wherein the amplifier includes a load matching block, and wherein the control signal configures the load matching block. ### Claim 21 (depends on 20) The system of claim 20, wherein the load matching block is configurable by one or more of: matching impedances to provide a desired Voltage Standing Wave Ratio (VSWR) or desired power level transfer from the amplifier into a load, switching one or more impedance elements in or out of circuit in a tunable matching network, providing one or more control voltages to one or more variable impedances in the tunable matching network, changing a bias voltage, changing a bias current, changing a supply voltage, switching in or out one or more stages of a multi-stage gain unit, modifying a physical size of one or more elements, modifying amplifier gain, modifying amplifier phase, modifying amplifier compression points, and/or enabling or disabling one or more elements.