T-junction array to feed partially dielectric-filled oversized rectangular waveguide

Author

Miroslav Samardzija;Jiro Hirokawa;Makoto Ando

Author_Institution

Dept. of Electrical & Electronic Eng., Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, 152-8552, Japan

fYear

2009

Firstpage

1

Lastpage

4

Abstract

A waveguide feed is designed to feed partially dielectric-filled oversized rectangular waveguide. Waveguide feed is arranged as twelve in-series cascade of power dividers and two matching junctions. The matching junction´s phase transmission control ranges form −110 deg. to −230 deg. The overall reflection at the design frequency is below −10 dB. A frequency shift of 430 MHz is observed where the reflection is below −21 dB. The dielectric constant used is relatively low resulting in amplitude and phase ripple of −11 dB and 30 deg. respectively. In order to confirm the operability of waveguide feed, radiating slots will be designed on the upper plate of oversized waveguide. The measured results will be presented and evaluated.

Keywords

"Feeds","Rectangular waveguides","Waveguide components","Power dividers","Waveguide junctions","Dielectric constant","Dielectric losses","Reflection","Frequency","Dielectric substrates"

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2009. APSURSI ´09. IEEE

ISSN

1522-3965

Print_ISBN

978-1-4244-3647-7

Electronic_ISBN

1947-1491

Type

conf

DOI

10.1109/APS.2009.5171781

Filename

5171781