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公开(公告)号：US20240275425A1
公开(公告)日：2024-08-15
申请号：US18180832
申请日：2023-03-08
IPC分类号： H04B1/525
CPC分类号： H04B1/525
摘要： A system and a method are disclosed for reducing local oscillator leakage. In some embodiments, a system includes a circuit, including: a mixer; and a bias control circuit, the mixer having a first local oscillator input, the bias control circuit being configured to control a bias at the first local oscillator input.
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公开(公告)号：US20220149872A1
公开(公告)日：2022-05-12
申请号：US17585480
申请日：2022-01-26
发明人： Amitoj SINGH , Ajaypat JAIN , Xiaohua YU , Tienyu CHANG , Siu-Chuang Ivan LU , Sang Won SON
摘要： A band-switching network includes a dual-band balun and a switch network. The dual-band balun includes a first output and a second output. The switch network includes a first switch and a second switch in which an input to the first switch is coupled to the first output and an input to the second switch is coupled to the second balanced output. The dual-band balun further includes a primary coil, a first secondary coil and a second secondary coil in which the first secondary coil is coupled to the first balanced output and the second secondary coil is coupled to the second balanced output. In one embodiment, the primary coil and the first secondary coil are coupled by a first coupling factor k1, and the primary coil and the second secondary coil are coupled by a second coupling factor k2 that is different from the first coupling factor k1.
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公开(公告)号：US20210384923A1
公开(公告)日：2021-12-09
申请号：US16987390
申请日：2020-08-06
发明人： Amitoj SINGH , Ajaypat JAIN , Xiaohua YU , Tienyu CHANG , Siu-Chuang Ivan LU , Sang Won SON
摘要： A band-switching network includes a dual-band balun and a switch network. The dual-band balun includes a first output and a second output. The switch network includes a first switch and a second switch in which an input to the first switch is coupled to the first output and an input to the second switch is coupled to the second balanced output. The dual-band balun further includes a primary coil, a first secondary coil and a second secondary coil in which the first secondary coil is coupled to the first balanced output and the second secondary coil is coupled to the second balanced output. In one embodiment, the primary coil and the first secondary coil are coupled by a first coupling factor k1, and the primary coil and the second secondary coil are coupled by a second coupling factor k2 that is different from the first coupling factor k1.
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4.发明公开公开(公告)号：US20240291446A1
公开(公告)日：2024-08-29
申请号：US18197175
申请日：2023-05-15
发明人： Ying CHEN , Che-Chun KUO , Tienyu CHANG
CPC分类号： H03F3/245 , H01L23/66 , H03F1/565 , H04B1/44 , H01L2223/6655 , H03F2200/294
摘要： A single-pole single-throw (SPST) radio frequency (RF) switch is provided that includes one or more switches stacked in series, and a first capacitor disposed at an input side of the SPST RF switch, in series, before the one or more switches. The SPST RF switch also includes a second capacitor disposed, in parallel, across the one or more switches, and an inductor disposed at an output side of the SPST RF switch, in series, after the one or more switches.
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公开(公告)号：US20230353195A1
公开(公告)日：2023-11-02
申请号：US17731251
申请日：2022-04-27
发明人： Yanru TANG , Pranav DAYAL , Hou-Shin CHEN , Pritesh VORA , Tienyu CHANG , Siuchuang Ivan LU , Kee-Bong SONG
CPC分类号： H04B7/04 , H03F3/245 , H04B2001/0416
摘要： A closed-loop power control (CLPC) system is disclosed that includes a first signal path for a first polarization and a second signal path for a second polarization. The first signal path includes a first power amplifier, a first output power detector configured to detect a first output power level of the first power amplifier, and a first processor configured to determine a first analog gain for a first controller and a first gain for a first digital-to-analog converter based on a first accumulated error between the first output power level and a target Effective Isotropically Radiated Power. A second processor is configured to set a first variable gain of a first variable gain amplifier coupled to an input of the first power amplifier. The CLPC can be configured to control the gain of the first signal path separately or as one signal path.
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公开(公告)号：US20210376794A1
公开(公告)日：2021-12-02
申请号：US16989421
申请日：2020-08-10
发明人： Ajaypat JAIN , Amitoj SINGH , Xiaohua YU , Tienyu CHANG , Siu-Chuang Ivan LU , Sang Won SON
摘要： An electronic circuit and method are provided. The electronic circuit includes an in-phase(I)-quadrature(Q) amplifier including an I cascode branch and a Q cascode branch, the IQ amplifier configured to receive a differential input and control signals, control, based on the control signals, gate voltages in the I cascode branch and gate voltages in the Q cascode branch, generate an I output signal with the I cascode branch, and generate a Q output signal with the Q cascode branch, and a quadrature coupler configured to perform quadrature summation of the I output signal and the Q output signal and generate a final phase shifted output.
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