Novel trigonal dual-mode filter with controllable transmission zeros

Author

Wei, Chia-Ling ; Jia, B.-F. ; Zhu, Z.-J. ; Tang, Ming-Chun

Author_Institution

Inst. of Appl. Phys., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

5

Issue

13

fYear

2011

fDate

10/1/2011 12:00:00 AM

Firstpage

1563

Lastpage

1567

Abstract

A novel design method for trigonal dual-mode filters with controllable transmission zeros is presented. The filters consist of a trigonal open stub dual-mode resonator with cross-coupling between source and load. The field patterns of this type of resonator are investigated using full-wave electromagnetic simulations. The technique of utilising capacitive and inductive source-load coupling to improve the performance of this type of filter is explored intensively. Advantages of this type of filter include not only its dual-mode response, but also its controllable transmission zeros. Two bandpass filters are designed, fabricated and tested to validate the design concept. The simulated and measured results are in agreement generally.

Keywords

band-pass filters; poles and zeros; resonator filters; bandpass filters; capacitive source-load coupling; controllable transmission zeros; cross-coupling; design concept; design method; dual-mode response; field patterns; full-wave electromagnetic simulations; inductive source-load coupling; trigonal dual-mode filter; trigonal open stub dual-mode resonator;

fLanguage

English

Journal_Title

Microwaves, Antennas & Propagation, IET

Publisher

iet

ISSN

1751-8725

Type

jour

DOI

10.1049/iet-map.2010.0517

Filename

6086868