Invention Grant
- Patent Title: Dual-feedback amplifier limiter
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Application No.: US15779176Application Date: 2015-12-17
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Publication No.: US10581383B2Publication Date: 2020-03-03
- Inventor: Alexander Oon , Teik Yang Goh , Yuan Wei Ng , Seow Teng Wong
- Applicant: MOTOROLA SOLUTIONS, INC.
- Applicant Address: US IL Chicago
- Assignee: MOTOROLA SOLUTIONS, INC.
- Current Assignee: MOTOROLA SOLUTIONS, INC.
- Current Assignee Address: US IL Chicago
- Agency: Michael Best & Friedrich LLP
- International Application: PCT/MY2015/000103 WO 20151217
- International Announcement: WO2017/105213 WO 20170622
- Main IPC: H03F3/04
- IPC: H03F3/04 ; H03F1/02 ; H03F3/19 ; H03F1/22 ; H03F1/14

Abstract:
A method and apparatus for a dual-feedback, amplifier limiter for providing a conditioned radio-frequency signal. The dual-feedback, amplifier limiter includes an input that receives a radio-frequency signal and a stacked amplifier including an input node coupled to the input, an output node, a first transistor configured as a common-base amplifier, and a second transistor configured as a common-emitter amplifier. The dual-feedback, amplifier limiter further includes an output coupled to the output node of the stacked amplifier. The output provides the conditioned radio-frequency signal. The dual-feedback, amplifier limiter further includes a radio-frequency feedback circuit coupled to the stacked amplifier. The radio-frequency feedback circuit includes a passive radio-frequency dependent reactive element in series with a radio-frequency feedback circuit resistor. The dual-feedback, amplifier limiter further includes an envelope control feedback circuit coupled to the stacked amplifier and including a current mirror and a reactive element loop filter.
Public/Granted literature
- US20180351514A1 DUAL-FEEDBACK AMPLIFIER LIMITER Public/Granted day:2018-12-06
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