TY - JOUR
T1 - Fan beam formation using spiral array antennas
AU - Nakano, H.
AU - Shinma, Y.
AU - Mimaki, H.
AU - Yamauchi, J.
AU - Hirose, K.
PY - 1996
Y1 - 1996
N2 - A circularly polarized fan beam is formed by using an array antenna composed of two-arm elliptical spiral elements whose ellipticity is within the range from 1.0 to 0.4. The fan beam has the maximum value in the direction normal to the antenna plane. The half-power beamwidth for an ellipticity of 0.4 is wider than that for a conventional round spiral array antenna by 12°. A tilted beam is also realized using an array antenna composed of single-arm round spiral elements. The array radiates a fan beam in a direction of 24° off-normal to the antenna plane. The axial ratio in this direction remains within 3 dB over a frequency range of 5.7 GHz to 7.0 GHz.
AB - A circularly polarized fan beam is formed by using an array antenna composed of two-arm elliptical spiral elements whose ellipticity is within the range from 1.0 to 0.4. The fan beam has the maximum value in the direction normal to the antenna plane. The half-power beamwidth for an ellipticity of 0.4 is wider than that for a conventional round spiral array antenna by 12°. A tilted beam is also realized using an array antenna composed of single-arm round spiral elements. The array radiates a fan beam in a direction of 24° off-normal to the antenna plane. The axial ratio in this direction remains within 3 dB over a frequency range of 5.7 GHz to 7.0 GHz.
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U2 - 10.1109/aps.1996.549912
DO - 10.1109/aps.1996.549912
M3 - Conference article
AN - SCOPUS:0029726381
SN - 0272-4693
VL - 3
SP - 1628
EP - 1631
JO - AP-S International Symposium (Digest) (IEEE Antennas and Propagation Society)
JF - AP-S International Symposium (Digest) (IEEE Antennas and Propagation Society)
T2 - Proceedings of the 1996 AP-S International Symposium & URSI Radio Science Meeting. Part 1 (of 3)
Y2 - 21 July 1996 through 26 July 1996
ER -