Linearization of mixers using a reconfigurable transistor pair for W-CDMA mobile terminals

Author

Yum, Tsz Yin ; Chan, Chi Hou ; Xue, Quan

Author_Institution

Wireless Commun. Res. Center, City Univ. of Hong Kong, Kowloon, China

Volume

2

fYear

2005

fDate

4-6 Oct. 2005

Abstract

We present results in the development of a miniaturized mixer linearization technique for advanced mobile terminals. With the exploitation of a unified RF distortion-compensating mechanism in a dual-transistor framework, the devised approach features simple, yet compact designs that offer a maximum 40-dB improvement on third-order inter-modulation distortions (IMD3). The hybrid circuit using a low-power device produced a +7-dBm output power at the 1-dB gain compression (Pl-dB), sustaining as many as +26.5 dBm third-order intercept point (OIP3) under a 2-V operation voltage. Graceful degradations on modulation bandwidths and gain variations are also presented, showing superb performance.

Keywords

code division multiple access; intermodulation distortion; linearisation techniques; low-power electronics; mixers (circuits); mobile communication; 2 V; RF distortion-compensating mechanism; W-CDMA mobile terminals; advanced mobile terminals; gain variations; hybrid circuit; low-power device; mixers linearization; modulation bandwidths; reconfigurable transistor pair; third-order inter-modulation distortions; third-order intercept point; Bandwidth; Circuits; Degradation; Linearization techniques; Multiaccess communication; Performance gain; Power generation; Radio frequency; Transistors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2005 European

Print_ISBN

2-9600551-2-8

Type

conf

DOI

10.1109/EUMC.2005.1610091

Filename

1610091