Journal
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume 17, Issue 8, Pages 586-588Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2007.901769
Keywords
defected ground structure (DGS); filter; low-pass filters; microstrip filter; transmission zero
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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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