Title :
Quasi-Elliptic Microstrip Low-Pass Filters Using an Interdigital DGS Slot
Author :
Balalem, Atallah ; Ali, Ali R. ; Machac, Jan ; Omar, Abbas
Author_Institution :
Magdeburg Univ., Magdeburg
Abstract :
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 low-pass filters were designed, fabricated and tested. The filters have a cut-off frequency of about 3 GHz.
Keywords :
elliptic filters; low-pass filters; microstrip filters; frequency 3 GHz; interdigital defected ground structure slot; quasielliptic microstrip low-pass filters; resonant frequency; Band pass filters; Capacitance; Equivalent circuits; Filtering theory; Fingers; Low pass filters; Microstrip filters; Resonance; Resonant frequency; Shape; Defected ground structure (DGS); filter; low-pass filters; microstrip filter; transmission zero;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2007.901769
