A flat four-beam switched array antenna

A low-profile four-beam switched array antenna for mobile terminals is proposed in this paper. A flat antenna concept modeled as a square magnetic line current array is realized by thin trapezoidal cavity elements. A unidirectional beam is obtained which can be redirected by alternating input termin...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 1996-09, Vol.44 (9), p.1227-1230
Main Authors: Kuga, N., Arai, H.
Format: Article
Language:English
Subjects:
Antenna arrays
Antenna radiation patterns
Antennas and propagation
Apertures
Directive antennas
Fading
Finite element methods
Frequency
Interchannel interference
Mobile antennas
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Summary:A low-profile four-beam switched array antenna for mobile terminals is proposed in this paper. A flat antenna concept modeled as a square magnetic line current array is realized by thin trapezoidal cavity elements. A unidirectional beam is obtained which can be redirected by alternating input terminals of the hybrid coupler. Element characteristics are calculated approximately using a cavity model with the two-dimensional finite-element method. Input characteristics and radiation pattern of the array antenna are evaluated by experiments.
ISSN:0018-926X
1558-2221
DOI:10.1109/8.535380