Compact planar magic-T using half mode substrate integrated waveguide and slotline coupling

Author

Feng, Wenjie ; Che, Wenquan ; Eibert, Thomas F.

Author_Institution

Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China

fYear

2011

fDate

5-10 June 2011

Firstpage

1

Lastpage

4

Abstract

A new and compact magic-T configuration using half mode substrate integrated waveguide (HMSIW) and slotline coupling is investigated and designed. Due to the metallic ground inserted into the middle of the substrate, the proposed E-plane HMSIW power divider has a 180° reverse phase characteristic between the two input/output ports. A slotline etched in the middle metal ground is utilized to couple the energy out of the HMSIW power divider and functions as the H-arm of magic-T. A Ku-band prototype has been fabricated for demonstration, good agreement between the measured and simulated results has been observed, indicating that the planar magic-T structure has fractional bandwidth of 18.3% (12.9-15.5 GHz), the amplitude and phase imbalances are less than 0.23 dB and 2.0°, respectively. The proposed planar magic-T is expected to find wide applications in the future integration of compact SIW circuits and systems.

Keywords

microwave circuits; power dividers; slot line components; substrate integrated waveguides; waveguide couplers; E-plane HMSIW power divider; Ku band prototype; SIW circuits; compact planar magic-T; frequency 12.9 GHz to 15.5 GHz; half mode substrate integrated waveguide; middle metal ground; slot line coupling; Couplings; Europe; Microstrip; Microwave communication; Microwave propagation; Substrates; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International

Conference_Location

Baltimore, MD

ISSN

0149-645X

Print_ISBN

978-1-61284-754-2

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2011.5972570

Filename

5972570