Open Loop Filter Duplexer with Internal Stubs for GSM Cellular Base Station

Author

de Melo, M.T. ; Bezerra, A.L. ; Filho, P.N.S. ; Belfort, A.J.

Author_Institution

Departamento de Eletronica e Sistemas, Univ. Fed. de Pernambuco, Recife

fYear

2006

fDate

10-15 Sept. 2006

Firstpage

564

Lastpage

567

Abstract

A new filter duplexer with open loop resonators, having inside stubs, for GSM band in the DSC1800 Cellular Radio Base Station (RBS) standard is presented. The filters use resonators of square open loop types. The insertion of the stubs allows the perimeter of the loop to be less than 1/2, which is the length used in the well-known canonical loop. The device was fabricated on PTFE (RO3010) board. An eight poles selective filter with a single pair of attenuation poles was used. The full wave EM simulator was used to obtain the desired dimensions of the resonators. Simulated and measured results are presented here

Keywords

cellular radio; microstrip filters; microstrip resonators; microwave filters; multiplexing equipment; open loop systems; resonator filters; DSC1800; EM simulator; GSM cellular base station; canonical loop; filter duplexer; internal stubs; microstrip filters; microstrip resonators; microwave filters; microwave resonators; open loop resonators; Band pass filters; Bandwidth; Base stations; Frequency; GSM; Microstrip filters; Microstrip resonators; Microwave filters; Resonator filters; Transfer functions; Duplexers; Filters; Microstrip; Microstrip filters; Microstrip resonators; Microwave filters and Resonators;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. 36th European

Conference_Location

Manchester

Print_ISBN

2-9600551-6-0

Type

conf

DOI

10.1109/EUMC.2006.281454

Filename

4057877