Title:
Very Low-Profile “Bull’s Eye” Feeder Antenna
Author(s):
M. Beruete, I. Campillo, J. S. Dolado, J. E. Rodríguez-Seco, E. Perea, F. Falcone, and M. Sorolla
Source:
IEEE Antennas and Wireless Propagation Letters
Vol./Issue/Date:
Vol. 4, 2005
Year:
2005
Page(s):
365 - 368
Keywords:
Bull eye, concentric periodic corrugated plate,
metamaterials, subwavelength aperture, very low-profile feeder.
Abstract:
In this letter, a very low-profile planar horn antenna
is proposed. It consists of a subwavelength aperture placed into a
“Bull’s Eye” concentric periodic corrugated conducting plate that
produces good return losses and a narrow radiated beam. The antenna
is excited by means of a waveguide whose flange has been
properly mechanized in the rear part of the structure. The mechanism
explaining this phenomenon is similar to the enhanced transmission
observed at optical wavelengths in similar structures. In
this work, the circularly corrugated structure has been scaled into
the microwave frequency range and, moreover, the plane wave excitation
has been replaced by a subwavelength aperture excited
by a conventional closed metallic waveguide. This transforms the
original focusing structure into a new concept of a very low-profile
feeder with potential applications.
Document:
Reference Id:
34
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