Power amplifier module combined with duplexer CDMA-based PCS phone

Author

Yun, G.-H. ; Park, H.-K.

Author_Institution

Dept. of Radio Commun. Eng., Honan Univ., Kwangju, South Korea

Volume

145

Issue

6

fYear

1998

fDate

12/1/1998 12:00:00 AM

Firstpage

486

Lastpage

490

Abstract

A power amplifier combined with duplexer is presented for the CDMA-based PCS phone. For reducing idle currents and the overall size of the combined module, dielectric filters in the duplexer are rearranged into a power amplifier to reduce the output power level of the module. The DC bias point is limited to class B. About a 50 mA idle current has been successfully saved, and more current has been saved in the hand phone owing to the reduced power level of the module. The module size has been reduced to 1.5 CC. ACPR performances are satisfactory at the maximum output power of a power amplifier required by IS-95 air interface standards

Keywords

MESFET circuits; UHF power amplifiers; cellular radio; code division multiple access; digital radio; modules; personal communication networks; telephone sets; CDMA-based PCS phone; DC bias point; IS-95 air interface standards; MESFET; combined module; dielectric filters; digital celluar phone; duplexer; idle currents reduction; maximum output power; module size; output power level reduction; power amplifier; power amplifier module;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:19982254

Filename

755286