Title :
Design of 10 dB branch line coupler by using DGS
Author :
Moyra, T. ; Roy, Anirban ; Parui, Swapan K. ; Das, S.
Author_Institution :
Dept. of Electron. & Commun. Eng., Nat. Inst. of Technol., Agartala, India
Abstract :
A new planar 10 dB loose branch line coupler is proposed for application to the 2.5 GHz centre frequency. This proposed coupler is implemented with rectangular ring headed dumbbell shaped Defect Ground Structure (DGS) along with conventional microstrip transmission line. Design of this conventional branch line coupler with DGS provides more design flexibility. Using the DGS, increases the electrical length of microstrip line, provides slow wave characteristics and increases the impedance of the microstrip line. In this paper one required high impedance microstrip line is implemented easily using proposed DGS structure. Finally, the compact microstrip 10 dB loose coupler is designed.
Keywords :
high-frequency transmission lines; microstrip lines; DGS; branch line coupler; defect ground structure; frequency 2.5 GHz; high impedance microstrip transmission line; rectangular ring headed dumbbell; slow wave characteristics; Couplers; Impedance; Microstrip; Microwave circuits; Microwave communication; Microwave photonics; 10 dB loose coupling; Defect Ground Structure (DGS); branch line coupler; microstrip line;
Conference_Titel :
Communications, Devices and Intelligent Systems (CODIS), 2012 International Conference on
Conference_Location :
Kolkata
Print_ISBN :
978-1-4673-4699-3
DOI :
10.1109/CODIS.2012.6422252
