Title :
The Studies on Coupling Characteristics of Novel Defected Ground Structures
Author :
Zhang, Sheng ; Liu, Fa-lin
Author_Institution :
Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei
Abstract :
Three types of novel DGSs are proposed firstly in this paper. The electric and magnetic coupling structures for three types of DGS are studied respectively. The S-parameters show that different coupling structures can cause different frequency responses, especially the stopband characteristics and the position of transmission poles. At the same time, the similar coupling structures have similar frequency responses for three types of DGSs. In order to explore the usefulness of the coupled-DGSs, two kinds of low-pass filters (LPFs) are designed. Both filters using coupled-DGSs have compact dimensions, wide passbands and excellent attenuation characteristics in the wide stopband.
Keywords :
S-parameters; band-pass filters; electromagnetic coupling; frequency response; low-pass filters; transmission lines; DGS; S-parameters; coupling characteristics; defected ground structure; electric coupling; frequency responses; low-pass filters; stopband characteristics; transmission poles; Attenuation; Capacitance; Couplings; Etching; Inductance; Low pass filters; Magnetic separation; Microstrip; Microwave filters; Resonant frequency;
Conference_Titel :
Microwave Conference, 2008 China-Japan Joint
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-3821-1
DOI :
10.1109/CJMW.2008.4772389
