A new electronically tunable combline filter with simultaneous continuous control of central frequency and bandwidth

Author

Sanchez-Renedo, M. ; Gomez-Garcia, Roberto ; Alonso, Jose I. ; Rodriguez, Cesar Briso

Author_Institution

Dpto. Senales, Sistemas y Radiocomunicaciones, ETSI Telecomunication, Madrid, Spain

Volume

3

fYear

2004

fDate

6-11 June 2004

Firstpage

1291

Abstract

A new reconfigurable band pass filter with electronically continuous control of both central frequency and bandwidth is presented in this paper. The bandwidth tuning is achieved by means of an ingenious method to modify the electrical couplings of the filter resonators. The propose structure employs varactor capacitors as variable reactance elements. Finally, a filter prototype is designed, constructed and measured in suspended stripline technology in the UHF band (470-862 MHz).

Keywords

UHF filters; band-pass filters; circuit tuning; comb filters; frequency control; resonator filters; varactors; 470 to 862 MHz; UHF band; bandwidth control; bandwidth tuning; central frequency control; electrical couplings; electronically continuous control; electronically tunable combline filter; filter prototype; filter resonators; reactance elements; reconfigurable band pass filter; stripline technology; varactor capacitors; Band pass filters; Bandwidth; Capacitors; Centralized control; Couplings; Electric variables control; Frequency; Resonator filters; Tuning; Varactors;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2004 IEEE MTT-S International

ISSN

0149-645X

Print_ISBN

0-7803-8331-1

Type

conf

DOI

10.1109/MWSYM.2004.1338802

Filename

1338802