Title :
High-Q band rejection filter by using U-slot DGS
Author :
Woo, Duk-Jae ; Lee, Taek-Kyung ; Pyo, Cheol-Sig ; Choi, Won-kyu
Author_Institution :
Sch. of Electron., Telecomm. & Comput. Eng., Hankuk Aviation Univ., Gyonggi-do, South Korea
Abstract :
This paper presents a new U-slot defected ground structure (DGS) in the microstrip line for the use in the design of high-Q band rejection filter. Compared to the conventional DGS, a U-slot DGS has a simple shape but the slope of its rejection characteristic is more steep. The Q factor of the band rejection property for the U-slot DGS increases when the distance between two slots in the U-shape decreases. By employing three cascaded U-slot DGSs, a high-Q band stop filter is designed and fabricated. Experimental results show that the Q factor of the band stop filter with three U-slot DGSs is 38.4.
Keywords :
band-stop filters; microstrip lines; U-slot DGS; U-slot defected ground structure; high-Q band rejection filter; microstrip line; Electronic mail; Metamaterials; Microstrip; Microwave filters; Periodic structures; Photonic band gap; Q factor; Resonance; Shape; Spirals;
Conference_Titel :
Microwave Conference, 2005 European
Print_ISBN :
2-9600551-2-8
DOI :
10.1109/EUMC.2005.1610168
