Title :
A Hybrid SIW and GCPW Guided-Wave Structure Coupler
Author :
Dong-Fang Guan ; Zu-Ping Qian ; Ying-Song Zhang ; Yang Cai
Author_Institution :
Coll. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China
Abstract :
Since substrate integrated waveguide (SIW) is not directly compatible with active circuits, additional transitions to planar transmission lines are indispensable. In this letter, a novel hybrid SIW-CPW structure coupler applying an antenna feeding network is presented. SIW is used as the radiating portion while coplanar waveguide (CPW) is the input matching portion that is connected directly to the active circuits. Without any transition structure, the whole system can be more compact. In addition, this hybrid coupler has a relative bandwidth of over 30% with the broadband amplitude and phase balance characteristic of CPW.
Keywords :
antenna feeds; coplanar waveguides; substrate integrated waveguides; waveguide couplers; GCPW guided-wave structure coupler; active circuits; antenna feeding network; broadband amplitude characteristic; coplanar waveguide; hybrid SIW guided-wave structure coupler; input matching portion; phase balance characteristic; planar transmission lines; substrate integrated waveguide; Bandwidth; Coplanar waveguides; Couplers; Couplings; Microwave circuits; Substrates; Wireless communication; Coupler; grounded coplanar waveguide (GCPW); hybrid structure; substrate integrated waveguide (SIW);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2014.2321497
