期刊
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
卷 17, 期 8, 页码 586-588出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2007.901769
关键词
defected ground structure (DGS); filter; low-pass filters; microstrip filter; transmission zero
This letter introduces a DGS slot with an interdigital shape. The resonant frequency of the slot can be easily controlled by changing the length of the metal fingers, without changing the area taken by the structure. Using this slot, two quasi-elliptic lowpass filters were designed, fabricated and tested. The filters have a cut-off frequency of about 3 GHz.
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