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公开(公告)号：US20230006877A1
公开(公告)日：2023-01-05
申请号：US17857134
申请日：2022-07-04
Applicant: MediaTek Inc.
Inventor： Po-Yu Chen , Yen-Liang Chen , Chi-Tsan Chen , Chao-Wei Wang
Abstract: A radio frequency (RF) communication assembly includes an RF communication circuit and a compensator apparatus. The compensator apparatus receives an input including an I-component of a pre-compensated signal, a Q-component of the pre-compensated signal, and encoded operating conditions of the RF communication circuit. The RF communication circuit includes RF circuit components causing signal impairments. The compensator apparatus perform neural network computing on the input, and the RF communication assembly generates a compensated output signal that compensates for at least a portion of the signal impairments.
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公开(公告)号：US12047222B2
公开(公告)日：2024-07-23
申请号：US17857134
申请日：2022-07-04
Applicant: MediaTek Inc.
Inventor： Po-Yu Chen , Yen-Liang Chen , Chi-Tsan Chen , Chao-Wei Wang
CPC classification number: H04L27/364 , H03F1/3294 , H04B1/0475 , H04B1/12 , H04B1/30
Abstract: A radio frequency (RF) communication assembly includes an RF communication circuit and a compensator apparatus. The compensator apparatus receives an input including an I-component of a pre-compensated signal, a Q-component of the pre-compensated signal, and encoded operating conditions of the RF communication circuit. The RF communication circuit includes RF circuit components causing signal impairments. The compensator apparatus perform neural network computing on the input, and the RF communication assembly generates a compensated output signal that compensates for at least a portion of the signal impairments.
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公开(公告)号：US11870397B2
公开(公告)日：2024-01-09
申请号：US17674985
申请日：2022-02-18
Applicant: MEDIATEK Inc.
Inventor： Shi-Wen Liu , Tang-Nian Luo , Chi-Tsan Chen , Chi-Kun Chiu , Jiann-Huang Liu , Peng-Ta Huang , Chi-Sheng Yu , Hua-Shan Chou
CPC classification number: H03F1/0233 , H03F3/245 , H04B7/0602 , H03F2200/105 , H03F2200/451
Abstract: The invention provides a radio frequency (RF) module and associated method with envelope tracking (ET) power supply in a device. The RF module may comprise a plurality of transmitters, an ET output, and an ET multiplexer. Each said transmitter may comprise an ET port and one or more RF outputs, and may be configured for providing an RF signal to one of said one or more RF outputs, and providing an ET signal, which reflects an envelope of the RF signal, to the ET port. The ET multiplexer may be coupled between said ET ports of the plurality of transmitters and the ET output, for selectively relaying one of said ET ports to the ET output.
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公开(公告)号：US20230006611A1
公开(公告)日：2023-01-05
申请号：US17857132
申请日：2022-07-04
Applicant: MediaTek Inc.
Inventor： Po-Yu Chen , Hao Chen , Yi-Min Tsai , Hao Yun Chen , Hsien-Kai Kuo , Hantao Huang , Hsin-Hung Chen , Yu Hsien Chang , Yu-Ming Lai , Lin Sen Wang , Chi-Tsan Chen , Sheng-Hong Yan
Abstract: A compensator compensates for the distortions of a power amplifier circuit. A power amplifier neural network (PAN) is trained to model the power amplifier circuit using pre-determined input and output signal pairs that characterize the power amplifier circuit. Then a compensator is trained to pre-distort a signal received by the PAN. The compensator uses a neural network trained to optimize a loss between a compensator input and a PAN output, and the loss is calculated according to a multi-objective loss function that includes one or more time-domain loss function and one or more frequency-domain loss functions. The trained compensator performs signal compensation to thereby output a pre-distorted signal to the power amplifier circuit.
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