Title :
Design and realization of a new compact branch-line coupler using defected ground structure
Author :
Wang, Huaming ; Liu, Xueguang ; Cai, Wenfeng ; Cao, Hongfang
Author_Institution :
Sch. of Electron. & Inf. Eng., Soochow Univ., Suzhou, China
Abstract :
A new compact branch-line directional coupler is proposed combined the T-model branch line coupler with defected ground structure (DGS). Using transmission theory, the parameter selection limit about the T-Model equivalent structure is discussed firstly. Then a T-model branch line coupler with DGS is proposed and optimum designed with simulation software. The measurement results show that the proposed coupler has the advantages as compact and well passband flatness.
Keywords :
directional couplers; microstrip lines; transmission line theory; T-model branch line coupler; compact branch-line directional coupler; defected ground structure; microstrip transmission line; parameter selection limit; passband flatness; transmission theory; Bandwidth; Coupling circuits; Directional couplers; Frequency; Impedance; Microstrip; Passband; Power transmission lines; Transmission line measurements; Transmission line theory; branch-line coupler; defected ground structure (DGS); equivalent quarter-wavelength transmission line;
Conference_Titel :
Solid-State and Integrated-Circuit Technology, 2008. ICSICT 2008. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2185-5
Electronic_ISBN :
978-1-4244-2186-2
DOI :
10.1109/ICSICT.2008.4734818
