Conference Proceeding

Novel microstrip bandpass filter with controllable transmission zeros

Inst. of Appl. Phys., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
11/2009; DOI:10.1109/MAPE.2009.5355857 In proceeding of: Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2009 3rd IEEE International Symposium on
Source: IEEE Xplore

ABSTRACT This paper presents a bandpass filter using a novel single dual-mode resonator. The resonator with notch perturbation is investigated. The transmission zeros and current distribution are discussed. The location of the transmission zeros are shifted by changing the position of input/output ports and the size of circular notch. Different selectivity in stopband can be realized by the filter. Based on the proposed dual-mode resonator, an asymmetrical frequency responses filter at center frequency of 2.4 GHz is implemented with two transmission zeros. The measured results exhibit good agreement with the simulation.

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Keywords

asymmetrical frequency responses filter
 
current distribution
 
Different selectivity
 
GHz
 
input/output ports
 
measured results exhibit good agreement
 
notch perturbation
 
novel single dual-mode resonator
 
paper presents
 
proposed dual-mode resonator
 
simulation
 
transmission zeros
 

Long Zhang