A compact dual-band filter with adjustable transmission zeros

Author

Wang, Huan ; Chu, Qing-Xin

Author_Institution

Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China

fYear

2009

fDate

Sept. 29 2009-Oct. 1 2009

Firstpage

117

Lastpage

120

Abstract

A novel planar dual-band filter with controllable transmission zeros is presented. The filter comprises two quarter-wave line filtering sections which share common via holes and I/O ports. For each band, separate electric and magnetic coupling paths are constructed to produce controllable transmission zeros which can be located either below or above the passband. Three circuit prototypes with different filtering characteristics are implemented and validated by EM simulation and experiment approaches. The filter size, including T-junctions, is only around 20 mm × 10 mm.

Keywords

band-pass filters; microstrip filters; EM simulation; I/O ports; T-junctions; adjustable transmission zeros; compact dual-band filter; electric coupling paths; magnetic coupling paths; microstrip bandpass filters; passband filter; quarter-wave line filtering sections; Band pass filters; Coupling circuits; Dual band; Filtering theory; Frequency; Inductance; Information filtering; Magnetic separation; Microwave filters; Resonator filters; T-junction; dual-band filter; separate electric and magnetic coupling;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2009. EuMC 2009. European

Conference_Location

Rome

Print_ISBN

978-1-4244-4748-0

Type

conf

Filename

5296459