Title :
Compact Substrate Integrated Waveguide (SIW) Filter With Defected Ground Structure
Author :
Shen, Wei ; Yin, Wen-Yan ; Sun, Xiao-Wei
Author_Institution :
Center for Microwave & RF Technol. (CMRFT), Shanghai Jiao Tong Univ. (SJTU), Shanghai, China
Abstract :
A compact substrate integrated waveguide (SIW) filter with defected ground structure (DGS) is proposed. The DGS is etched on the ground plane of the SIW cavity, and it behaves as a resonator. Under such condition, better frequency selectivity contributed to three transmission zeros is obtained, and two of them are located at the lower stopband. The proposed filter, fabricated using standard printed circuit board technology, has the advantages of compactness, good spurious suppression characteristics and low cost. Its measured S-parameters agree well with the simulated ones.
Keywords :
S-parameters; band-stop filters; defected ground structures; printed circuits; resonator filters; substrate integrated waveguides; waveguide filters; S-parameter measurement; compact substrate integrated waveguide filter; defected ground structure; frequency selectivity; printed circuit board technology; resonator; spurious suppression characteristics; stopband; Cavity resonators; Couplings; Filtering theory; Microwave filters; Passband; Resonant frequency; Substrates; Defected ground structure (DGS); S-parameters; filter; substrate integrated waveguide (SIW); transmission zeros;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2010.2091402
