Improvement of broadband feedforward amplifier using photonic bandgap

Author

Yoon, Jinho ; Seo, Chulhun

Author_Institution

Sch. of Electron. Eng., Soongsil Univ., Seoul, South Korea

Volume

11

Issue

11

fYear

2001

Firstpage

450

Lastpage

452

Abstract

In this paper, the photonic bandgap, the predistortion, and the secondary harmonic tuning are simultaneously employed in a feedforward amplifier to maximize the power added efficiency (PAE) and the operating bandwidth for in IMT-2000 band. In this case, the secondary harmonic tuning and the predistortion linearizer can cancel the second and the third harmonics, respectively. The PBG prevented any more harmonics appearing over 6 GHz. The feedforward amplifier was improved by 4%, and 15 dBc in the PAE and the IMD (intermodulation distortion), respectively. The operation bandwidth achieved was twice as wide as the conventional feedforward amplifier.

Keywords

circuit tuning; feedforward; intermodulation distortion; microwave circuits; microwave photonics; microwave power amplifiers; wideband amplifiers; IMT-2000 band; broadband feedforward amplifier; harmonic tuning; intermodulation distortion; microwave power amplifiers; operating bandwidth; photonic bandgap; power added efficiency; predistortion; predistortion linearizer; secondary harmonic tuning; Bandwidth; Broadband amplifiers; Manufacturing; Optical amplifiers; Optical filters; Periodic structures; Photonic band gap; Power amplifiers; Power harmonic filters; Predistortion;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/7260.966038

Filename

966038