Title :
A diplexer for UMTS applications
Author :
Cabral, Herrnano A. ; Bezerra, Saulo T G ; De Melo, Marcos T.
Author_Institution :
Dept. de Eletron. e Sist., Univ. Fed. de Pernambuco, Recife, Brazil
Abstract :
In this article a microstrip diplexer is proposed which has good performance on the UMTS upload and download bands, as shown by simulation results and actual measurements. The diplexer is based on a two-pole resonator named H-type resonator, and makes strong use of cross-coupling to pass energy between ports. The fractional bandwidth for both bands is about 3%. The diplexer has an insertion loss of less than 1dB and provides more than 20dB of isolation. A lumped element model for the diplexer is also derived, and its response is shown to be in good agreement to the microstrip diplexer.
Keywords :
3G mobile communication; microstrip resonators; multiplexing equipment; H-type resonator; UMTS; download bands; fractional bandwidth; insertion loss; lumped element model; microstrip diplexer; pass energy cross-coupling; two-pole resonator; upload bands; 3G mobile communication; Biophotonics; Chemicals; Effluents; Filters; Pollution measurement; Rain; Testing; Toxicology; Wastewater treatment; Microstrip diplexer; coplanar resonator;
Conference_Titel :
Microwave and Optoelectronics Conference (IMOC), 2009 SBMO/IEEE MTT-S International
Conference_Location :
Belem
Print_ISBN :
978-1-4244-5356-6
Electronic_ISBN :
1679-4389
DOI :
10.1109/IMOC.2009.5427595
