손실 보상 증폭기를 사용한 고집적 CMOS 송신 누설 신호 제거기
A CMOS Fully Integrated TX Leakage Canceller with a Loss Compensating Amplifier
- 주제(키워드) Transmitter leakage cancellation , Insertion loss , loss compensating amplifier
- 발행기관 아주대학교
- 지도교수 권익진
- 발행년도 2012
- 학위수여년월 2012. 2
- 학위명 석사
- 학과 및 전공 일반대학원 전자공학과
- 실제URI http://www.dcollection.net/handler/ajou/000000012309
- 본문언어 한국어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
In this paper, a CMOS fully integrated transmitter (TX) leakage canceller with a loss compensating amplifier for ultra-high-frequency (UHF) mobile RFID readers and WCDMA duplexer is presented, respectively. The proposed TX leakage canceller consists of an autotransformer, a compensating amplifier, a tuning capacitor, and a tuning resistor. The proposed structure for UHF RFID has a minimum TX to RX rejection of 55 dB and a RX insertion loss of 2.6 dB. The fully integrated TX leakage canceller with the LNA achieves meausred gain of 16.4 dB and meausred noise figure of 6.2 dB. The notch frequency can be digitally tuned from 866 MHz to 961 MHz with the tuning capacitor. The proposed structure as a duplexer for WCDMA has over 55 dB rejection characteristic between the TX and the RX and a 2.5 dB of the RX insertion loss at 1.9 GHz. The notch frequency can be controlled from 1.6 GHz to 2.3 GHz using the digitally controlled 4-bit tuning capacitor. The wideband LNA with the TX leakage canceller achieves simulated gain of 17.4 dB and measured noise figure of 6.2 dB at 1.9 GHz.
more목차
Abstract
Table of Contents
List of Figures
List of Tables
Chapter 1. Introduction 1
Chapter 2. Proposed TX Leakage Canceller 11
2.1 TX Leakage Cancelling Technique 11
2.2 Loss Compensating Technique 14
Chapter 3. Circuit design 15
3.1 The Autotransformer 15
3.2 The Tuning Capacitor and Resistor 16
3.3 The Compensating Amplifier 18
3.4 The Low Noise Amplifier 20
3.5 Simulation Result of The TX Leakage Canceller for RFID 23
3.6 Simulation Result of The Duplexer for WCDMA 27
Chapter 4. Measurement Results 31
Chapter 5. Conclusion 38
Publications 39
References 40
국문 요약 41
