科研之友
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摘要
A new type of compact wideband bandpass filter using modified non-brantsotropic split-ring resonators is proposed to have. wideband performance and suppress spurious responses With the proposed resonators. size reduction of similar to 15% and 20% when comparing single outer and Inner constituent rings has been obtained Embedded-slot-loaded resonators ate placed at both input and output feed lines for extra stopband rejection modes to suppress spurious frequencies with attenuation losses over than 15 dB for frequency range up to 3 1 f(0) without affecting the operation hand In addition. due to the zero-degree feed structure. the appearance of two transmission zeros, thereby suppressing the second harmonic response has been obtained This filter has not been only compact size but also a wider tippet stopband caused by slot-loaded resonator bandstop characteristics Good agreement is obtained bet
- 出版日期2010-3
