Analysis of LO leakage in CMOS Gilbert mixer by cadence spectreRF for direct conversion application

Author

Do, M.A. ; Liu, J.J. ; Yeo, Kiat Seng ; Ma, J.-G.

Author_Institution

Centre for Integrated Circuits & Syst., Nanyang Technol. Univ.

Volume

1

fYear

2004

fDate

6-9 Dec. 2004

Firstpage

309

Abstract

The LO-RF leakage and feedthrough in double-balanced CMOS Gilbert mixers are analyzed from three aspects in this paper. They are an ideal mixer, a nonideal mixer with parasitic effects and an ideal mixer with LO mismatch. It is found that the LO phase mismatch and LO amplitude mismatch are both exponentially proportional to the LO feedthrough. If both of them occur at the same time, the amplitude square of LO leakage is equal to the sum of the amplitude square of each contribution

Keywords

CMOS integrated circuits; mixers (circuits); oscillators; LO amplitude mismatch; LO feedthrough; LO leakage analysis; LO phase mismatch; LO-RF feedthrough; LO-RF leakage; cadence spectreRF; direct conversion; double-balanced CMOS Gilbert mixers; ideal mixer; nonideal mixer; parasitic effects; Application specific integrated circuits; CMOS integrated circuits; CMOS process; CMOS technology; DC generators; Digital signal processing; Integrated circuit technology; Mixers; RF signals; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on

Conference_Location

Tainan

Print_ISBN

0-7803-8660-4

Type

conf

DOI

10.1109/APCCAS.2004.1412756

Filename

1412756