Folded Half Mode Substrate Integrated Waveguide 3 dB Coupler

Author

Zhai, Guo Hua ; Hong, Wei ; Wu, Ke ; Chen, Ji Xin ; Chen, Peng ; Wei, Jing ; Tang, Hong Jun

Author_Institution

State Key Lab. of Millimeter Waves, Southeast Univ., Nanjing

Volume

18

Issue

8

fYear

2008

Firstpage

512

Lastpage

514

Abstract

In this letter, novel compact 3 dB double-slot and single-slot couplers are proposed and implemented based on folded half mode substrate integrated waveguide (FHMSIW). The size of the FHMSIW coupler is reduced by nearly 50% and 75% compared with half-mode substrate integrated waveguide coupler and substrate integrated waveguide coupler, respectively. Prototype couplers at X-band are fabricated and measured and good performance in bandwidth, insertion loss, and balance are achieved.

Keywords

microstrip circuits; rectangular waveguides; double-slot coupler; folded half mode substrate integrated waveguide; microstrip circuit; rectangular waveguide; single-slot coupler; Bandwidth; Coupling circuits; Insertion loss; Magnetic confinement; Microstrip; Millimeter wave technology; Planar waveguides; Printed circuits; Rectangular waveguides; Substrates; Coupler; folded half mode substrate integrated waveguide (FHMSIW); half mode substrate integrated waveguide (HMSIW); 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.2008.2001006

Filename

4588984