Design of broadband orthomode transducer based on double ridged waveguide

Author

Zhang, Tian-Ling ; Yan, Ze-Hong ; Chen, Lei ; Fan, Fang-Fang

Author_Institution

Nat. Key Lab. of Sci. & Technol. on Antennas & Microwaves, Xidian Univ. Xi´´an, Xi´´an, China

fYear

2010

fDate

8-11 May 2010

Firstpage

765

Lastpage

768

Abstract

A Ku broadband OMT for satellite communication applications is designed. This OMT consists of a stepped double ridged waveguide junction, a power combiner and an axial branch. It is similar to that of Bøifot junction, but has no septum and pins which increase the complexity of the structure. The OMT with a size of 42×44×100 mm³ can cover from 10.44 GHz to 14.93 GHz (35.4% bandwidth). The return losses are better than 27 dB and the isolation is greater than 70 dB. The OMT has excellent performance and can be easily manufactured. In this design, the mode matching technique is used to optimize the components of the OMT.

Keywords

power combiners; ridge waveguides; satellite communication; transducers; Bøifot junction; Ku broadband OMT; axial branch; bandwidth 10.44 GHz to 14.93 GHz; broadband orthomode transducer; power combiner; satellite communication; stepped double ridged waveguide junction; Bandwidth; Design optimization; Pins; Polarization; Power combiners; Satellite communication; Transducers; Waveguide components; Waveguide junctions; Waveguide transitions;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology (ICMMT), 2010 International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-5705-2

Type

conf

DOI

10.1109/ICMMT.2010.5525061

Filename

5525061