Invention Grant
- Patent Title: Transimpedance amplifier input stage mixer
- Patent Title (中): 跨阻放大器输入级混频器
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Application No.: US12492682Application Date: 2009-06-26
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Publication No.: US08089309B2Publication Date: 2012-01-03
- Inventor: Douglas S. Jansen , Gregory M. Flewelling
- Applicant: Douglas S. Jansen , Gregory M. Flewelling
- Applicant Address: US NH Nashua
- Assignee: BAE Systems Information and Electronic Systems Integration Inc.
- Current Assignee: BAE Systems Information and Electronic Systems Integration Inc.
- Current Assignee Address: US NH Nashua
- Agency: Finch & Maloney PLLC
- Agent Neil F. Maloney
- Main IPC: G06G7/12
- IPC: G06G7/12

Abstract:
A Gilbert cell mixer design is disclosed. Instead of using a differential transconductance stage as typically done, the design employs a differential transimpedance amplifier input stage. By utilizing a transimpedance input stage to the Gilbert mixer, feedback is used to obtain higher linearity without sacrificing noise performance. The transimpedance input stage supplies a current signal to the cascode connected Gilbert switching quad, so the transimpedance amplifier output is taken from the collector of the transimpedance amplifier output transistor, instead of the emitter as normally done with transimpedance amplifiers.
Public/Granted literature
- US20100327941A1 Transimpedance Amplifier Input Stage Mixer Public/Granted day:2010-12-30
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