Design of microstrip dual-mode dual-band bandpass filter based on a novel multi-mode resonator

Author

Wang, Jianpeng ; Zhang, Gang ; Cui, Haifei

Author_Institution

Ministrial Key Lab. of JGMT, Nanjing Univ. of Sci. & Technol., Nanjing, China

Volume

4

fYear

2012

fDate

5-8 May 2012

Firstpage

1

Lastpage

3

Abstract

A novel microstrip multi-mode resonator is proposed in this paper. The electric field patterns and equivalent circuits of the proposed resonator are given to analyze its resonance properties. It is shown that the resonator can be excited with four operating modes, i.e., two pairs of even and odd modes. Finally, based on the characteristics of the resonator, a dual-mode dual-band bandpass filter with two passbands at the center frequencies of 2.4 GHz and 5.2 GHz is designed and fabricated. Measured results indicate that the proposed filter has the properties of compact size, simple structure, together with two transmission poles inside each passband.

Keywords

UHF filters; band-pass filters; equivalent circuits; microstrip filters; microwave filters; poles and zeros; resonator filters; UHF filters; electric field patterns; equivalent circuits; even mode; frequency 2.4 GHz; frequency 5.2 GHz; microstrip dual-mode dual-band bandpass filter; microwave filters; multimode resonator; odd mode; transmission poles; Band pass filters; Dual band; Equivalent circuits; Microstrip filters; Microstrip resonators; Passband; Resonant frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on

Conference_Location

Shenzhen

Print_ISBN

978-1-4673-2184-6

Type

conf

DOI

10.1109/ICMMT.2012.6230333

Filename

6230333