논문 해외 국제전문학술지(SCI급) A LINEARIZED AMPLIFIER USING SELF-MIXING FEEDBACK TECHNIQUE
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2014-02
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- 학술지명 IEICE ELECTRONICS EXPRESS
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홈페이지논문 초록 (Abstract)
A linearized amplifier using self-mixing feedback technique is presented to cancel out third-order intermodulation distortion (IMD3) terms. Seco nd harmonic terms, which are generated by the self-mixing mixer between base and collector of a BJT amplifier, can be used as a source for IMD3 cancellation. The amplifier is based on a common emitter BJT amplifier with a passive FET mixer and an emitter follower for self-mixing feedba ck. The amplifier has been implemented with discrete transistors on an F R-4 PCB. Upto 16-dB IMD3 rejection has been achieved by the self-mixing feedback technique at 2 GHz with peak output power of 20 dBm.