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

Volume

24

Issue

8

fYear

2014

fDate

Aug. 2014

Firstpage

518

Lastpage

520

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);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2014.2321497

Filename

6824876