Title :
Design of a compact and wideband branchline coupler using hybrid approach
Author :
Abinash Kumar Singh;Joydeb Mandal;Mrinal Kanti Mandal
Author_Institution :
Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology, Kharagpur, West Bengal, India, 721302
Abstract :
A compact and wideband branch line coupler is designed that covers all the navigation bands starting form xx GHz to yy GHz. A single-section coupler with series stubs, half-wavelength at the mid-band frequency f0, is considered to obtain the wideband operation. Moreover, a hybrid approach, using both transmission line sections and lumped elements, is used for the size reduction without compromising the wideband operation. A prototype branch line coupler is fabricated. The coupler has a fractional bandwidth of aa% at f0 = 1.385 GHz and a compact size of bbλg×ccλg, λg being the microstrip line guided wavelength at f0.
Keywords :
"Couplers","Wideband","Power transmission lines","Microstrip","Navigation","Microwave theory and techniques"
Conference_Titel :
Microwave and Photonics (ICMAP), 2015 International Conference on
Print_ISBN :
978-1-4673-6897-1
DOI :
10.1109/ICMAP.2015.7408780