Novel thin and compact H-plane SIW horn antenna

The substrate integrated waveguide (SIW) technology allows to construct several types of commonly used antennas in a planar way. However, some practical constraints limit their performances when frequencies below 20 GHz are considered. In the case of SIW horn antennas, the available substrates are much thinner than the wavelength yielding to poor matching and undesired back radiation. In this paper, an innovative structure to overcome these limitations is presented. It consists of a transition printed on the same SIW substrate, which improves both the radiation and the matching performances of conventional SIW horns. The horn shape is also further optimized by reducing its dimensions required for a given directivity. This is obtained by modifying the horn profile in order to effectively combine different TE modes. Guidelines are provided to design this type of thin and compact SIW horn antenna. They were applied to manufacture a prototype in the Ku-band with a substrate thinner than lambda(0)/10. Measurement results validate the proposed concepts showing excellent performances.


Published in:
IEEE Transactions on Antennas and Propagation, 61, 6, 2911-2920
Year:
2013
Publisher:
Piscataway, Institute of Electrical and Electronics Engineers
ISSN:
0018-926X
Keywords:
Laboratories:




 Record created 2012-10-23, last modified 2018-03-17

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