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公开(公告)号：US12119789B2
公开(公告)日：2024-10-15
申请号：US18326746
申请日：2023-05-31
发明人： Sudipto Chakraborty
IPC分类号： H03F3/213 , H03B5/12 , H03F1/02 , H03F3/21 , H03F3/24 , H03F3/45 , H03G1/00 , H03G3/00 , H03G3/30 , H04B1/04
CPC分类号： H03B5/1212 , H03B5/1228 , H03B5/1265 , H03F1/0211 , H03F1/0277 , H03F3/211 , H03F3/213 , H03F3/245 , H03F3/45 , H03G1/0005 , H03G3/004 , H03G3/3042 , H04B2001/0416
摘要： A variable-gain power amplifying technique includes generating, with a network of one or more reactive components included in an oscillator, a first oscillating signal, and outputting, via one or more taps included in the network of the reactive components, a second oscillating signal. The second oscillating signal has a magnitude that is proportional to and less than the first oscillating signal. The power amplifying technique further includes selecting one of the first and second oscillating signals to use for generating a power-amplified output signal, and amplifying the selected one of the first and second oscillating signals to generate the power-amplified output signal.
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2.发明授权公开(公告)号：US12107550B2
公开(公告)日：2024-10-01
申请号：US17733605
申请日：2022-04-29
发明人： Jooseung Kim , Jung Min Oh , Moon Suk Jeon
CPC分类号： H03F1/0211 , H03F1/565 , H03F3/245 , H03F3/45165 , H04B1/04 , H03F2200/222 , H03F2200/318 , H03F2200/387 , H03F2200/451
摘要： An amplifier may include first and second terminals to receive first and second input signals and a differential amplifier providing differential amplification of the first and second input signals. The differential amplifier may include a first differential amplifier stage to receive the first input signal and a second differential amplifier stage to receive the second input signal. The amplifier may further include a first bias circuit to bias the first differential amplifier stage, where the first bias circuit is connected to the second input terminal to provide anti-phase bias control of the first differential amplifier stage. The amplifier may further include a second bias circuit to bias the second differential amplifier stage, where the second bias circuit is connected to the first input terminal to provide anti-phase bias control of the second differential amplifier stage.
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公开(公告)号：US12057812B2
公开(公告)日：2024-08-06
申请号：US17597989
申请日：2019-08-22
CPC分类号： H03F1/0211 , H03F3/45475 , H04R3/00 , H03F2200/03 , H04R2420/07
摘要： An apparatus is disclosed for reducing resistor conductivity modulation during amplification. In an example aspect, the apparatus includes a power amplifier circuit comprising a first pair of resistors, a digital-to-analog converter comprising a second pair of resistors, a reference generation circuit comprising a third pair of resistors, and a scaling circuit. The scaling circuit is configured to accept a common-mode reference voltage and a common-mode output voltage. The scaling circuit is also configured to provide a first voltage at body terminals of the first pair of resistors, a second voltage at body terminals of the second pair of resistors, and a third voltage at body terminals of the third pair of resistors such that a summation of the first voltage and the third voltage reduced by the second voltage is approximately equal to an average of the common-mode reference voltage and the common-mode output voltage.
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公开(公告)号：US11990876B2
公开(公告)日：2024-05-21
申请号：US17478431
申请日：2021-09-17
CPC分类号： H03F3/245 , H03F1/0211 , H04B1/40 , H03F2200/294 , H03F2200/451
摘要： A transceiver interface circuit, comprising a driver amplifier (DA), a load line impedance modulation circuit coupled to the DA; and multiple selectable output ports coupled to the load line impedance modulation circuit, an impedance presented by the load line impedance modulation circuit being adjustable dependent on at least a number of output ports coupled to the load line impedance modulation circuit.
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公开(公告)号：US20240047872A1
公开(公告)日：2024-02-08
申请号：US18489986
申请日：2023-10-19
发明人： Grady MOATES
CPC分类号： H01Q3/44 , H01Q13/28 , H03F3/21 , H03F3/193 , H03F1/0205 , H01Q3/28 , H03F1/0211 , H03F3/195 , H04B1/0458 , H04B1/0483
摘要： Techniques for controlling a low-profile medium wave transmitting system are provided. An example of an antenna system according to the disclosure includes a first radiator operably coupled to a first amplifier, a first modulator operably coupled to the first amplifier and configured to provide a first radio frequency signal to the first amplifier, a second radiator operably coupled to a second amplifier, a second modulator operably coupled to the second amplifier and configured to provide a second radio frequency signal to the second amplifier, a control module operably coupled to the first modulator, first amplifier, the second modulator, and the second amplifier, the control module being configured to control a delta phase value based on the first radio frequency signal and the second radio frequency signal, and control the power output of the first amplifier and the second amplifier.
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公开(公告)号：US20240039479A1
公开(公告)日：2024-02-01
申请号：US18447207
申请日：2023-08-09
申请人： pSemi Corporation
发明人： Poojan Wagh , Kashish Pal , Robert Mark Englekirk , Tero Tapio Ranta , Keith Bargroff , Simon Edward Willard
CPC分类号： H03F1/0211 , H03F3/193 , H03F1/0261 , H03F1/223 , H03F2200/451 , H03F2200/21 , H03F2200/18 , H03F2200/522
摘要： Various methods and circuital arrangements for biasing one or more gates of stacked transistors of an amplifier are possible where the amplifier is configured to operate in at least an active mode and a standby mode. Circuital arrangements can reduce bias circuit and stacked transistors standby current during operation in the standby mode and to reduce impedance presented to the gates of the stacked transistors during operation in the active mode while maintaining voltage compliance of the stacked transistors during both modes of operation.
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公开(公告)号：US20240007974A1
公开(公告)日：2024-01-04
申请号：US18343734
申请日：2023-06-28
发明人： Serge CONTAL
CPC分类号： H04W52/367 , H03F1/0211 , H04W52/248
摘要： A communication device includes a power amplifier configured to amplify a signal being emitted on a frequency channel; a variable voltage source to supply a bias voltage of the amplifier; a memory comprising software code and a processor which, when executing the software code, causes the device to adjust the bias voltage according to the frequency channel or a modulation of the signal; the processor adapted to produce, from pre-programmed data and as a function of the at least one parameter, a control signal that is representative of the adjusted value of the bias voltage; the pre-programmed data being such that for a given frequency channel, a bias voltage produced for a first modulation defined by a constellation comprising a first number of points is greater than a bias voltage produced for a second modulation comprising a second number of points that is greater than the first number of points.
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公开(公告)号：US11863127B2
公开(公告)日：2024-01-02
申请号：US17233764
申请日：2021-04-19
发明人： Yang Chang , Kuan-Yu Shih , Chia-Jun Chang , Ka-Un Chan
CPC分类号： H03F1/0211 , H03F3/193 , H03F1/56 , H03F2200/222 , H03F2200/387 , H03F2200/451 , H03F2200/522
摘要： An amplifier device includes a regulator circuit, a first voltage converting circuit, a first control circuit, and an amplifier circuit. The regulator circuit is configured to output a first driving voltage. The first voltage converting circuit is coupled to the regulator circuit, and is configured to output one of the first driving voltage and at least one first voltages related to the first driving voltage, as a first operating voltage. The first control circuit is coupled to the first voltage converting circuit through a first node, and is configured to receive the first operating voltage and generate a first operating signal according to the first operating voltage and a first control signal. The amplifier circuit is coupled to the first control circuit and the regulator circuit, and is configured to receive the first driving voltage, and is controlled by the first operating signal to generate an output voltage.
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9.发明公开公开(公告)号：US20230376064A1
公开(公告)日：2023-11-23
申请号：US18365087
申请日：2023-08-03
发明人： Mohamed El-Nozahi , Amr G. Elgamal
CPC分类号： G05F1/577 , G05F3/242 , H03F1/0211 , H01Q3/36
摘要： Apparatus and methods for compensating supply sensitive circuits for supply voltage variation are provided. In certain embodiments, an electronic system includes a power supply that outputs a supply voltage having a nominal voltage level, a supply conductor for routing the supply voltage, and a group of integrated circuits (ICs) that each receive the supply voltage from the supply conductor. Each IC includes a supply sensing circuit that generates a sense signal based on a local voltage level of the supply voltage at the IC, a bias control circuit that adjusts a bias signal based on the sense signal to account for a difference between the nominal voltage level and the local voltage level of the supply voltage, and a signal processing circuit biased by the bias signal.
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10.发明公开公开(公告)号：US20230353095A1
公开(公告)日：2023-11-02
申请号：US17733605
申请日：2022-04-29
发明人： JooSeung Kim , Jung Min Oh , Moon Suk Jeon
CPC分类号： H03F1/0211 , H03F3/245 , H03F3/45165 , H03F1/565 , H04B1/04 , H03F2200/451 , H03F2200/222 , H03F2200/387 , H03F2200/318
摘要： An amplifier may include first and second terminals to receive first and second input signals and a differential amplifier providing differential amplification of the first and second input signals. The differential amplifier may include a first differential amplifier stage to receive the first input signal and a second differential amplifier stage to receive the second input signal. The amplifier may further include a first bias circuit to bias the first differential amplifier stage, where the first bias circuit is connected to the second input terminal to provide anti-phase bias control of the first differential amplifier stage. The amplifier may further include a second bias circuit to bias the second differential amplifier stage, where the second bias circuit is connected to the first input terminal to provide anti-phase bias control of the second differential amplifier stage.
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