Linearity analysis and design optimisation for 0.18 μm CMOS RF mixer

Author

Li, O. ; Yuan, J.S.

Author_Institution

Chip Design & Reliability Lab., Central Florida Univ., Orlando, FL, USA

Volume

149

Issue

2

fYear

2002

fDate

4/1/2002 12:00:00 AM

Firstpage

112

Lastpage

118

Abstract

Equations for the 1dB compression point and third-order intermodulation point as a function of circuit and technology parameters are derived using a Volterra series expansion. The linearity analysis for both single- and double-balanced CMOS Gilbert mixers is examined. The relation between the input third-order intercept point and source inductance is studied in depth. The gate to drain overlap capacitance, which is one of the dominant nonlinear elements in a MOSFET, is included in the model. The design methodology to satisfy the mixer noise figure and conversion gain while optimising linearity is summarized. The analytical predictions are verified with the Cadence SpectreRF circuit simulation and experimental data. Good agreement between the model predictions and experimental data is obtained

Keywords

CMOS analogue integrated circuits; UHF integrated circuits; UHF mixers; Volterra series; circuit simulation; equivalent circuits; integrated circuit design; intermodulation; transceivers; CMOS RF mixer; Cadence SpectreRF circuit simulation; Gilbert mixers; Volterra series expansion; compression point; conversion gain; design methodology; design optimisation; double-balanced mixers; equivalent circuit; gate to drain overlap capacitance; input third-order intercept point; linearity analysis; noise figure; single-balanced mixers; source inductance; third-order intermodulation point; transceiver;

fLanguage

English

Journal_Title

Circuits, Devices and Systems, IEE Proceedings -

Publisher

iet

ISSN

1350-2409

Type

jour

DOI

10.1049/ip-cds:20020355

Filename

1020016