Title:
TRANSMITTER SYSTEM AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/032579
Kind Code:
A1
Abstract:
The present application relates to the field of transmitters, and provides a transmitter system and an electronic device, capable of mitigating the problem of performance degradation of a transmitter system due to leakage of radio frequency feedback signals. The transmitter system comprises: a feedback channel and a first transmit channel. The first transmit channel comprises a first transmitting mixer. The first transmitting mixer is used for converting a received baseband transmit signal into a radio frequency transmit signal. The radio frequency transmit signal is amplified by a first power amplifier and then outputted to a first coupler to be subjected to coupling, and is then transmitted out by an antenna. A feedback channel receives a radio frequency feedback signal coupled by the first coupler. The feedback channel comprises a feedback mixer. The feedback mixer converts the radio frequency feedback signal into a baseband feedback signal. The feedback mixer is coupled to a first local oscillator by means of a first local oscillator path. The first local oscillator path is used for receiving a differential local oscillator signal of the first local oscillator, and converting same into an in-phase orthogonal signal having a common mode rejection characteristic, and then outputting to the feedback mixer.
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Inventors:
QIN LIN (CN)
GONG TAO (CN)
GONG TAO (CN)
Application Number:
PCT/CN2020/108946
Publication Date:
February 17, 2022
Filing Date:
August 13, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L25/49
Foreign References:
| CN102291347A | 2011-12-21 | |||
| CN202261371U | 2012-05-30 | |||
| CN107093983A | 2017-08-25 | |||
| CN102739265A | 2012-10-17 | |||
| CN102710268A | 2012-10-03 | |||
| CN104052507A | 2014-09-17 | |||
| US20180006855A1 | 2018-01-04 | |||
| US20080051055A1 | 2008-02-28 |
Attorney, Agent or Firm:
BEIJING RUN ZEHENG INTELLECTUAL PROPERTY LAW FIRM (CN)
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