Invention Grant
- Patent Title: Receiver front-end circuit, communication unit and method therefor
- Patent Title (中): 接收机前端电路,通信单元及其方法
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Application No.: US14221302Application Date: 2014-03-21
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Publication No.: US09025709B2Publication Date: 2015-05-05
- Inventor: Chih-Fan Liao , Ming-Da Tsai
- Applicant: Mediatek Inc.
- Applicant Address: TW Science-Based Industrial Park, Hsin-Chu
- Assignee: Mediatek Inc.
- Current Assignee: Mediatek Inc.
- Current Assignee Address: TW Science-Based Industrial Park, Hsin-Chu
- Agent Winston Hsu; Scott Margo
- Main IPC: H04B1/10
- IPC: H04B1/10 ; H04L1/00

Abstract:
A receiver front end circuit includes a low-noise amplifier including: a first receiver path having: a first low-noise transconductor to amplify a received signal and output the amplified received signal; and a first mixer to down-convert the amplified received signal. A second receiver path includes: an auxiliary receiver having: a second transconductor to output an amplified received signal; a baseband amplifier having an input port and an output port; a first resistance coupling the input port to the output port of the baseband amplifier and to convert the amplified received signal from current to voltage and set a voltage gain of the second receiver path; and a second resistance coupled from the output port of the baseband amplifier to the first mixer output. In some examples, frequency-upconversion feedback path includes a third mixer to frequency up-convert the amplified received signal at an output of the second receiver path.
Public/Granted literature
- US20140355728A1 RECEIVER FRONT-END CIRCUIT, COMMUNICATION UNIT AND METHOD THEREFOR Public/Granted day:2014-12-04
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