2.5 V, 2 GHz CMOS direct up-conversion mixer = 2.5 V, 2 GHz CMOS 직접 상향 주파수 변환기

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This paper describes a direct up-conversion mixer. Basically, the proposed mixer inherits Gilbert``s structure, but unlike the original Gilbert cell mixer, the transistors used as V-I converter operates in the linear region instead of in the saturation region to expand the input dynamic range up to $2 V_{pp}$. And the linearity is enhanced by the feedback loop. It has a LO buffer which amplifies the LO input signal and changes single input into a differential pair. This mixer was simulated with HPADS (HP Advanced Design System) and HSPICE. The spice model parameter of the transistor used is BSIM3 based on Anam 0.25 mm process. For the LO input of 0 dBm and the baseband input of $2 V_{pp}$, output power is -5.3 dBm and the wanted signal to the unwanted signal ration more than 30 dB. Output third order intercept point is 7 dBm and the output noise floor is -143 dBm/Hz. The total current consumption including OP-AMPs and the LO buffer is 20 mA at 2.5 V power supply.
Advisors
Lee, Yong-Hoonresearcher이용훈researcher
Description
한국과학기술원 : 전기및전자공학전공,
Publisher
한국과학기술원
Issue Date
2000
Identifier
157410/325007 / 000983009
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학전공, 2000.2, [ v, 51 p. ]

Keywords

Mixer; LO buffer; 지역 발진기 버퍼; 주파수 변환기

URI
http://hdl.handle.net/10203/37251
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=157410&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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