Title :
Design of compact microstrip lowpass filters using coupled half-circle defected ground structures (DGSs)
Author :
Boutejdar, A. ; Sherbini, A. ; Ali, W. ; Fouad, S. ; Ahmed, L. ; Omar, A.
Author_Institution :
Dept. of Microwave Eng., Univ. of Magdeburg, Magdeburg
Abstract :
In this paper we have proposed a new half-circle resonators and investigated different coupling effects in order to realize a compact structure. The use of DGS in form of halfcircle shape improves the stop band characteristics. The new DGS-form allows a compact slot with a double coupling, thus a controlled of the resonance pole. The new filter has been designed, fabricated and measured. Good agreement between simulated and measured results has been achieved.
Keywords :
low-pass filters; microstrip filters; resonator filters; compact microstrip lowpass filters; compact slot; coupled half-circle defected ground structures; coupling effects; double coupling; half-circle resonators; resonance pole; stop band characteristics; Circuit simulation; Cutoff frequency; Design engineering; Equivalent circuits; Etching; Impedance; Microstrip filters; Microwave communication; Microwave filters; Passband;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4619550
