A 0.7–6 GHz low-voltage broadband folded mixer in 0.13-um CMOS

Author

Dawei Zhao ; Fengyi Huang ; Xusheng Tang ; Xiaopeng Sun

Author_Institution

Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China

Volume

1

fYear

2012

fDate

5-8 May 2012

Firstpage

1

Lastpage

4

Abstract

This paper presents the design and analysis of a low-voltage down-conversion mixer in 0.13μm CMOS for 0.7-6 GHz applications. The proposed mixer is based on folded double-balanced Gilbert cell which is well-known for low voltage, simplicity and well-balanced performances. The folded topology allows the g_m-stage and LO stage to have different currents. By setting the bias current in the PMOS switches near zero, the mixer DC offset due to device mismatch is greatly reduced. Capacitors are added parallel with the current generators to achieve the optimal IIP3 performance. Designed in SMIC 0.13-μm process, the mixer achieves a voltage gain (CG) of 5~7dB, a single-sideband noise figure (NF) of 11~13.2dB, and a third-order inter-modulation intercept point (IIP3) of 3.2~5dBm between 0.7~6GHz. The mixer core dissipates 5.8mW under 1.2 V supply.

Keywords

CMOS integrated circuits; UHF mixers; field effect MMIC; intermodulation; microwave mixers; microwave switches; CMOS integrated circuit; LO stage; PMOS switches; SMIC process; capacitors; current generators; folded double-balanced Gilbert cell; folded topology; frequency 0.7 GHz to 6 GHz; gain 5 dB to 7 dB; gm-stage; low-voltage broadband folded mixer; low-voltage down-conversion mixer; noise figure 11 dB to 13.2 dB; optimal IIP3 performance; power 5.8 mW; size 0.13 mum; third-order inter-modulation intercept point; voltage 1.2 V; CMOS integrated circuits; Inductors; Linearity; Mixers; Noise; Noise measurement; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on

Conference_Location

Shenzhen

Print_ISBN

978-1-4673-2184-6

Type

conf

DOI

10.1109/ICMMT.2012.6229985

Filename

6229985