Title :
A flat four-beam switched array antenna
Author :
Kuga, Nobuhiro ; Arai, Hiroyuki
Author_Institution :
Div. of Electr. & Comput. Eng., Yokohama Nat. Univ., Japan
fDate :
9/1/1996 12:00:00 AM
Abstract :
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
Keywords :
antenna arrays; antenna radiation patterns; finite element analysis; land mobile radio; mobile antennas; alternating input terminals; cavity model; element characteristics; flat antenna concept; flat four-beam switched array antenna; hybrid coupler; input characteristics; mobile telephone systems; mobile terminals; model; radiation pattern; square magnetic line current array; thin trapezoidal cavity elements; two-dimensional finite-element method; unidirectional beam; Antenna arrays; Antenna radiation patterns; Antennas and propagation; Apertures; Directive antennas; Fading; Finite element methods; Frequency; Interchannel interference; Mobile antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
