Title :
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
fDate :
Sept. 29 2009-Oct. 1 2009
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;
Conference_Titel :
Microwave Conference, 2009. EuMC 2009. European
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4748-0
