A Feedforward Power Amplifier with Loops that can reduce RX Band Noises Signals as well as Intermodulation Signals

Author

Jeong, Si-Gyun ; Jeong, Seong-Hoon ; Cha, Jeong-Hyeon ; Jeong, Yong-Chae ; Kim, Chul-Dong

Author_Institution

Division of Electronic & Information Engineering, Chonbuk Nat´´l Univ., R.O. Korea. E-mail: ycjeong@moak.chonbuk.ac.kr

fYear

2001

fDate

24-26 Sept. 2001

Firstpage

1

Lastpage

4

Abstract

In this paper, a new power amplifier is proposed for reduction of amplified RX band noise signals as well as TX band intermodulation distortion signals using feedforward technique. This proposed power amplifier, contains two loops-TX band intermodulation distortion signals cancellation loop and RX band noise signals cancellation loop, can provide duplexer with low TX path insertion loss for various wireless communication systems due to choice of loose RX attenuation characteristic. The proposed amplifier is implemented for IMT-2000 base station frequency band. Experimental results represent that the cancellation performance of intermodulation distortion signals and RX band noise signals are more than 31dB and 21dB, respectively.

Keywords

Attenuation; Base stations; Frequency; Insertion loss; Intermodulation distortion; Low-noise amplifiers; Noise cancellation; Noise reduction; Power amplifiers; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2001. 31st European

Conference_Location

London, England

Type

conf

DOI

10.1109/EUMA.2001.338897

Filename

4140270