Bandpass Filter Realization Using Degenerate Dual-Modes of a New Type of Patch Resonator for Significant Size Reduction

Author

Zinka, Srinivasa Rao ; Mohan, Akhilesh ; Biswas, Animesh

Author_Institution

Dept. of Electr. Eng./ACES, Indian Inst. of Technol., Kanpur

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

4

Abstract

A new type of dual mode patch resonator is proposed and dual-mode bandpass filters are designed by perturbing its degenerate modes using two slots which are orthogonal to each other. It has been shown that resonant frequencies of the degenerate modes can be varied independently by adjusting one slot length at a time. Geometrical size as well as radiation loss has been reduced further by using inductively loaded cross-slotted patch resonator. A bandpass filter operating at 2.98GHz with a fractional bandwidth of 4.69% is designed after miniaturization. A size reduction of approximately 30% is observed when compared with miniaturized triangular patch resonators, for the same center frequency.

Keywords

band-pass filters; microstrip filters; resonator filters; resonators; cross-slotted patch resonator; dual mode bandpass filter; dual mode patch resonator; miniaturized triangular patch resonator; radiation loss; resonant frequency; significant size reduction; Band pass filters; Bandwidth; Filtering theory; Microstrip filters; Microstrip resonators; Optical ring resonators; Resonant frequency; Resonator filters; Superconducting filters; Superconducting transmission lines; Dual-mode microstrip filter; asymmetrical filter response; cross slotted patch; degenerate modes; miniaturization;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0748-4

Electronic_ISBN

978-1-4244-0749-1

Type

conf

DOI

10.1109/APMC.2007.4554771

Filename

4554771