Active feedback amplifier approach for microwave filter

Author

Choi, W.W. ; Tam, K.W. ; Vitor, P. ; Martins, R.P.

Author_Institution

Fac. of Sci. & Technol., Macau Univ., Brazil

Volume

1

fYear

1999

fDate

1999

Firstpage

497

Abstract

In this paper, a novel microwave active filter based on the traditional lumped and transversal filter architecture is presented. This new filter adopts an active feedback amplifier topology in order to provide higher selectivity. Also, an alternative filter synthesis is derived from this topology for the conventional lumped and transversal filter. In order to demonstrate its usefulness, a L-band active filter is designed at GSM1800 center frequency 1.8 GHz with 30 MHz 3 dB bandwidth and evaluated in terms of computer simulation. These simulated results demonstrate that the proposed filter architecture has superior performance when compared with the traditional lumped and transversal filter

Keywords

UHF filters; UHF integrated circuits; active filters; feedback amplifiers; field effect MMIC; linear network synthesis; microwave filters; 1.8 GHz; 30 MHz; GSM1800 center frequency; L-band active filter; active feedback amplifier topology; filter synthesis; lumped filter architecture; microwave active filter; selectivity; transversal filter architecture; Active filters; Bandwidth; Computational modeling; Computer simulation; Feedback amplifiers; Frequency; L-band; Microwave filters; Topology; Transversal filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 1999. Proceedings of ICECS '99. The 6th IEEE International Conference on

Conference_Location

Pafos

Print_ISBN

0-7803-5682-9

Type

conf

DOI

10.1109/ICECS.1999.812331

Filename

812331