-
公开(公告)号：US11764739B2
公开(公告)日：2023-09-19
申请号：US17134447
申请日：2020-12-27
发明人： Zhenfei Peng , Qiang Su
CPC分类号： H03F1/565 , H03F3/245 , H03F2200/387 , H03F2200/451
摘要： In a radio frequency power amplifier with harmonic suppression, one end of an input matching circuit is connected with a radio frequency input end; and another end is connected with a base of a power amplification transistor having a collector connected with a power supply voltage through a first matching branch, and an emitter connected with a first connection point on a package substrate. The collector of the power amplification transistor is connected with a radio frequency output end through a second matching branch that is connected with the package substrate. A harmonic control circuit has a first end connected with the collector of the power amplification transistor, and a second end connected with a second connection point on the package substrate.
-
公开(公告)号：US09660529B2
公开(公告)日：2017-05-23
申请号：US14735820
申请日：2015-06-10
发明人： Qiang Su , Jiangtao Yi
CPC分类号： H02M3/158 , H03K17/063 , H03K17/102 , H03K2017/066 , H03K2217/0018
摘要： A transistor circuit of low shutoff-state current includes: a first transistor, a transistor string, and a switch. The first transistor and the transistor string are connected in series. The switch is configured to shut off the circuit. The first transistor is configured to reduce the shutoff-state current flowing therethrough using the negative feedback effect of the transistor string when the circuit is in a shutoff state; and the transistor string is configured to reduce the shutoff-state current flowing therethrough using a negative gate-source electrode voltage difference thereof and the bulk effect of the transistor.
-
公开(公告)号：US11894815B2
公开(公告)日：2024-02-06
申请号：US17134386
申请日：2020-12-26
CPC分类号： H03F3/245 , H03F1/3205 , H03F3/195 , H03F2200/451
摘要： A power amplifier includes: a power amplification circuit and a linearity compensation circuit; and herein the linearity compensation circuit is connected between a transistor amplification circuit and a biasing circuit of the power amplification circuit, to linearly compensate a nonlinear distortion of the power amplification circuit.
-
公开(公告)号：US11881820B2
公开(公告)日：2024-01-23
申请号：US17139928
申请日：2020-12-31
发明人： Chifeng Liu , Qiang Su , Qiming Wang , Jiangtao Yi
CPC分类号： H03F3/193 , H03F3/245 , H03F3/45273 , H03F2200/451 , H04B1/3827 , H04B1/40
摘要： A power control circuit includes a negative feedback loop, and a radio frequency signal path including a first NMOS transistor having a gate configured as a radio frequency signal input end, a drain connected with a source of a second NMOS transistor, and a source connected with a ground terminal. A drain of the second NMOS transistor is configured as a radio frequency signal output end and connected with a first voltage source. The negative feedback loop includes a third NMOS transistor having a gate connected with an output end of a differential amplifier, a source connected with the ground terminal, and a drain connected with a source of a fourth NMOS transistor having a gate connected with a reverse input end of the differential amplifier and with a second voltage source, and a drain connected with a forward input end and a first bias current source.
-
公开(公告)号：US11431306B2
公开(公告)日：2022-08-30
申请号：US17120167
申请日：2020-12-12
发明人： Jiangtao Yi , Qiang Su , Huadong Wen
摘要： An compensation circuit for an Amplitude Modulation-Amplitude Modulation (AM-AM) of a Radio Frequency (RF) power amplifier, including: a first biasing circuit, a power amplifier, and a compensation circuit located between the first biasing circuit and the power amplifier; herein, the compensation circuit includes a diode detection circuit and a feedforward amplifier for compensating AM-AM distortion.
-
公开(公告)号：US10855231B2
公开(公告)日：2020-12-01
申请号：US16665674
申请日：2019-10-28
发明人： Qiang Su , Baiming Xu , Jiangtao Yl
摘要： A temperature compensation circuit for a radio frequency power amplifier includes: a temperature control circuit and a negative feedback circuit; the temperature control circuit is configured to generate a first electrical signal corresponding to a temperature, and according to the first electrical signal, adjust a second electrical signal at a first node; the negative feedback circuit is configured to provide, on the basis of the second electrical signal, a negative feedback signal to the radio frequency power amplifier by means of a second node; the second electrical signal is used to change the resistance value of the negative feedback circuit so as to adjust a negative feedback signal that is associated with the resistance value; the negative feedback signal is used to be inputted into the radio frequency power amplifier such that the gain of the radio frequency power amplifier changes.
-
公开(公告)号：US11936443B2
公开(公告)日：2024-03-19
申请号：US17929687
申请日：2022-09-03
发明人： Shuai Chen , Qiang Su , Jiangtao Yi
IPC分类号： H04L27/26 , H04B7/0426 , H04J11/00
CPC分类号： H04B7/0426
摘要： A power distribution circuit applied to a radio frequency front-end transceiving apparatus includes a common-stage amplifying circuit and a branch-stage amplifying circuit, in which the branch-stage amplifying circuit comprises at least two parallel channel amplifying circuits; the common-stage amplifying circuit is configured to perform a first signal processing on a radio frequency signal received by an antenna of the radio frequency front-end transceiving apparatus to obtain a first power signal and output the first power signal to each of channel amplifying circuits, in which the first signal processing at least includes a buffering processing, an isolation processing and a low-noise amplifying processing; each channel amplifying circuit is configured to perform a second signal processing on the first power signal to obtain a second power signal and output the second power signal to a radio transceiving device; the second signal processing at least includes a low-noise amplifying processing.
-
公开(公告)号：US11837998B2
公开(公告)日：2023-12-05
申请号：US17138869
申请日：2020-12-30
发明人： Jiangtao Yi , Qiang Su , Huadong Wen
CPC分类号： H03F3/195 , H03F3/245 , H03F2200/168 , H03F2200/451 , H03F2200/99
摘要： A gain compression compensation circuit of a radio frequency power amplifier includes: a low-pass filtering module configured to receive a part of radio frequency signals output from a first power amplification transistor and to filter, from the part of radio frequency signals, radio frequency signals with a frequency above a fundamental wave to obtain a filtered signal; and a rectifying module configured to receive the filtered signal output by the low-pass filtering module and to rectify the filtered signal to obtain a rectified current; and to output the rectified current to a bias transistor and superimpose the rectified current with a bias current Ibias to flow into the bias transistor.
-
公开(公告)号：US11177772B2
公开(公告)日：2021-11-16
申请号：US16590371
申请日：2019-10-01
发明人： Qiang Su , Zhenfei Peng , Baiming Xu , Jiangtao Yi
摘要： A power control circuit includes: a voltage-current converter and a programmable current amplifier; the voltage-current converter is configured to detect an inputted output power control signal, and to convert the output power control signal to a control current and output same; and the programmable current amplifier is configured to receive the control current and output the amplified control current as a bias current of the power amplifier connected to the power control circuit.
-
公开(公告)号：US10797736B2
公开(公告)日：2020-10-06
申请号：US16666598
申请日：2019-10-29
发明人： Baiming Xu , Qiang Su , Yang Li , Jiangtao Yi
摘要： A radio-frequency power amplification circuit includes: a power amplification sub-circuit and an output matching sub-circuit, wherein the power amplification sub-circuit is used for selecting, according to a received control signal corresponding to a radio-frequency mode, a power amplification parameter corresponding to the radio-frequency mode to amplify a received radio-frequency signal, and outputting the amplified radio-frequency signal; the output matching sub-circuit is connected to the power amplification sub-circuit and is used for receiving the amplified radio-frequency signal, and transmitting, according to the control signal, the amplified radio-frequency signal by using an impedance corresponding to the radio-frequency mode.
-
-
-
-
-
-
-
-
-
搜索结果
22 条记录 (耗时 0.017 秒)
