Nonuniformly Folded Waveguide Resonators and Their Filter Applications

被引:13
作者
Huang, Guo-Shu [1 ,2 ]
Chen, Chun Hsiung [1 ,2 ]
机构
[1] Natl Taiwan Univ, Dept Elect Engn, Taipei 106, Taiwan
[2] Natl Taiwan Univ, Grad Inst Commun Engn, Taipei 106, Taiwan
关键词
Low-temperature co-fired ceramic (LTCC); nonuniformly folded waveguide; stepped impedance resonator (SIR); substrate integrated waveguide (SIW);
D O I
10.1109/LMWC.2010.2040209
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Nonuniformly folded substrate integrated waveguide (SIW) resonator is proposed to design compact cavity filters with narrow to wide bandwidths. By taking advantages of the generated stepped impedance resonator (SIR), the harmonic resonance frequencies of the proposed resonator may be controlled by properly adjusting the length and impedance ratio of the resonator. With the first harmonic moved away from the fundamental, a compact filter of 5% bandwidth may be realized with better stopband performance than the conventionally unfolded one. Alternatively, by moving the first harmonic toward the fundamental, one may utilize the first two resonances of two cavities to realize a four-pole filter with a wide bandwidth of 38.5%.
引用
收藏
页码:136 / 138
页数:3
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