A Wideband CMOS Mixer with Feedforward Compensated Differential Transconductor

Author

Rao, Pei-Zong ; Chang, Tang-Yuan ; Liang, Ching-Piau ; Chung, Shyh-Jong

Author_Institution

Dept. of Commun. Eng., National Chiao Tung Univ., Hsinchu

fYear

2007

fDate

27-30 May 2007

Firstpage

3892

Lastpage

3895

Abstract

A 2.4 to 10.7 GHz wideband mixer for multi-band orthogonal frequency division multiplexing ultra-wideband (MB-OFDM UWB) applications is designed using a TSMC 0.18mum CMOS technology. The designed mixer uses a LC folded cascode structure and a feedforward compensated high-linearity differential transconductor to improve the linearity. The measured results reveal that the proposed mixer achieves power conversion gain of 3.3 plusmn 1.5 dB, third-order input intercept point (IIP3) of 6.9 dBm, and input 1-dB compression point (P-1dB) of -2.8 dBm in the power consumption of 14.4mW from a 1.8V power supply. The chip area is 0.70 times 0.58 mm².

Keywords

CMOS integrated circuits; OFDM modulation; feedforward; mixers (circuits); ultra wideband technology; 0.18 micron; 1.8 V; 14.4 mW; 2.4 to 10.7 GHz; CMOS technology; LC folded cascode structure; feedforward compensated differential transconductor; multiband orthogonal frequency division multiplexing ultra-wideband applications; wideband CMOS mixer; CMOS technology; Gain measurement; Linearity; Mixers; OFDM; Power conversion; Power measurement; Semiconductor device measurement; Transconductors; Ultra wideband technology; CMOS mixers; UWB; differential transconductor; folded-mixer;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on

Conference_Location

New Orleans, LA

Print_ISBN

1-4244-0920-9

Electronic_ISBN

1-4244-0921-7

Type

conf

DOI

10.1109/ISCAS.2007.377889

Filename

4253532