Frequency tunable feedforward amplifier for PCS applications

Author

Echeverría, Adolfo ; Fan, Lu ; Kanamaluru, Sridhar ; Chang, Kai

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

fYear

1999

fDate

1999

Firstpage

24.1

Lastpage

24.4

Abstract

A novel linear feedforward amplifier with channel tunability was developed for multicarrier wireless communications applications. This amplifier is designed to operate in the personal communication services (PCS) frequency range with a maximum output power of 27 dBm, and offers frequency selectivity by using variable attenuators and variable phase shifters in both the signal and error cancellation loops. The circuit is capable of achieving a variable tuning range of 195 MHz with an intermodulation cancellation of over 60 dBc, and the third point intercept point improvement of more than 15 dB

Keywords

UHF amplifiers; UHF phase shifters; attenuators; circuit tuning; feedforward; personal communication networks; PCS applications; channel tunability; error cancellation loop; frequency selectivity; linear feedforward amplifier; multicarrier wireless communications; personal communication services; signal loop; variable attenuators; variable phase shifters; Attenuators; Circuit optimization; Frequency; Personal communication networks; Phase shifters; Power amplifiers; Power generation; Signal design; Tunable circuits and devices; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Systems, 2000. 1999 Emerging Technologies Symposium

Conference_Location

Richardson, TX

Print_ISBN

0-7803-5554-7

Type

conf

DOI

10.1109/ETWCS.1999.897342

Filename

897342