An integrated coaxial circular-polarised OMJ/OMT for dual-band feed applications

Author

Zhang, H.Z.

Author_Institution

Project Wedgetail, Boeing Australia Ltd., Australia

fYear

2005

fDate

3-8 July 2005

Firstpage

647

Abstract

A novel integrated coaxial circularly-polarised OMJ/OMT (orthogonal-mode junction/orthogonal-mode transducer) structure is proposed for dual-band feed applications. The new structure is simple and compact with all the phasers, hybrids and power dividers built on the surface of the inner conductor. A section of coaxial waveguide engraved with these components performs all the functions of a large number of separate devices, such as polariser, OMJ, rectangular waveguide arms, power divider and OMT. Further, this structure is suitable for die-casting and could be used for mass production. The bridge ridge directional coupler used in the integrated CP OMJ/OMT is a new structure. It offers a new method for design of a directional coupler using a ridge waveguide at its common narrow wall.

Keywords

antenna feeds; coaxial waveguides; dielectric-loaded antennas; directional couplers; electromagnetic wave polarisation; horn antennas; power dividers; ridge waveguides; waveguide junctions; waveguide transitions; bridge ridge directional coupler; coaxial waveguide; die-casting; dielectric-cone-loaded horn; dual-band feed; integrated coaxial circularly-polarised orthogonal-mode junction; integrated coaxial circularly-polarised orthogonal-mode transducer; phasers; polariser; power dividers; rectangular waveguide arms; ridged waveguide; Coaxial components; Conductors; Directional couplers; Dual band; Feeds; Polarization; Power dividers; Rectangular waveguides; Transducers; Waveguide components;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2005 IEEE

Print_ISBN

0-7803-8883-6

Type

conf

DOI

10.1109/APS.2005.1551894

Filename

1551894