A wide-band high-linearity feedforward power amplifier for digital communication systems

Author

Zhu, Xiaowei ; Zhou, Jimyi ; Feng, Limin ; Cheng Qian ; Hong, Wei ; Chen, Yiyuan

Author_Institution

Dept. of Radio Eng., Southeast Univ., Nanjing, China

Volume

1

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

29

Abstract

This paper describes a wide-band high linearity, high DC efficiency and low cost power amplifier for digital communication system. Feedforward technique is applied and the adaptive control techniques are employed for ensuring performance stability in the linearized amplifier. The third-order intermodulation products (IMD3) are less than -62 dBc and the intermodulation distortion cancellation reaches 24 dB. The operation bandwidth is more than 20 MHz and maximum output power is great than 40 dBm

Keywords

UHF circuits; UHF power amplifiers; cellular radio; circuit stability; digital communication; digital radio; feedforward; intermodulation distortion; wideband amplifiers; DC efficiency; adaptive control techniques; digital communication systems; distortion cancellation; feedforward technique; operation bandwidth; output power; performance stability; third-order intermodulation products; wideband high-linearity feedforward power amplifier; Adaptive control; Bandwidth; Broadband amplifiers; Costs; Digital communication; High power amplifiers; Intermodulation distortion; Linearity; Power generation; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 1999 Asia Pacific

Print_ISBN

0-7803-5761-2

Type

conf

DOI

10.1109/APMC.1999.828040

Filename

828040