By Topic

Compact orthomode power divider for high-efficiency dual-polarisation rectangular horn antennas

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Fonseca, N.J.G. ; Antenna & Sub-Millimetre Wave Sect., Eur. Space Agency, Noordwijk, Netherlands ; Rinous, P.

This paper introduces a new waveguide component that combines the electrical functions of an orthomode transducer and of a power divider. Following investigations on the design of dual-polarisation rectangular horn antennas with an edge ratio of 2 for phased array applications, it was found that the combination of two square horn antennas would lead to higher radiation efficiency and compactness than a single rectangular horn antenna. The drawback of such a configuration is that it brings additional complexity to the beam forming network as an additional power divider layer is required. To overcome this limitation, we have investigated the possibility to implement this additional power division section into the orthomode transducer (OMT) design, resulting in a new component referred to as an orthomode power divider. The main advantage of this new component is that it has almost the same size as a normal OMT, while combining the functions of two power dividers and two OMTs in a standard “separate functions” design approach. This paper describes this new component and illustrates its performances through a specific design in Ku-band. Excellent simulation results, including low return loss and high orthogonal polarisation isolation, were obtained over a bandwidth of about 1 GHz for a design center frequency at 12 GHz.

Published in:

Antennas and Propagation (EUCAP), 2012 6th European Conference on

Date of Conference:

26-30 March 2012