서지주요정보
A low power transmitter front-end for IEEE 802.15.04.900 MHz ZigBee applications
서명 / 저자 A low power transmitter front-end for IEEE 802.15.04.900 MHz ZigBee applications / Le Viet Hoang.
저자명 Le Viet Hoang
발행사항 [대전 : 한국정보통신대학교, 2006].
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소장정보

등록번호

DM0000796

소장위치/청구기호

문지도서관2층 학위논문

ICU/MS06-93 2006

SMS전송 소장위치

도서상태

이용가능

대출가능

반납예정일

초록정보

This thesis presents a low power transmitter front-end for 915MHz band IEEE 802.15.4 ZigBee applications. In this thesis the consideration issues in wireless transmitter have been discussed as well as the circuit design detail. The up-conversion mixer with the LO leakage suppressed at the RF output circuit has been proposed. The conventional Gilbert cell based mixer adopted a DC negative feedback which suppresses the DC offset between the different branches of the mixer. These DC mismatches in different branches of the mixer has been proved to cause the LO leakage at the RF output. Using simulation and some mathematic analysis, by removing these DC mismatches, the LO leakage at the RF output is suppressed. The analysis has been proved by the fact that the LO leakage at the RF output was more suppressed when deeply remove the DC offset at the baseband of the transmitter. The experimental results have been also presented to prove the theory. The transmitter front-end was designed and fabricated in 0.18$\mum$ CMOS technology. The transmitter front-end shows 13 dB power gain, 12 dBm of the OIP3, 0 dBm of the OP1dB. The transmitter front-end dissipates 10 mA from the 1.8V supply voltage. In the worst case the LO leakage at the antenna is -20 dBm when normally it is kept at -27 dBm. And by deeply removing the DC offset at the base band part, the LO leakage can be suppressed to more than -35 dBm.

서지기타정보

서지기타정보
청구기호 {ICU/MS06-93 2006
형태사항 50 p. : 삽도 ; 26 cm
언어 영어
일반주기 지도교수의 영문표기 : Sang-Gug Lee
지도교수의 한글표기 : 이상국
학위논문 학위논문(석사) - 한국정보통신대학교 : 공학부,
서지주기 References : p. 37-39
주제 direct conversion
driver amplifier
CMOS transmitter
LO suppression
low power
up-conversion mixer
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