Equiangular microstrip spiral antennas
Antennas and Propagation Society International Symposium, 1995. AP-S. Digest（1995）
摘要
The input impedance and the broadside axial ratio of a perturbed equiangular microstrip spiral antennas are examined. With the perturbation (modification factor /spl delta/) on its shape, the broadside axial ratio of the equiangular spiral can be significantly reduced. A 21% 3-dB axial ratio bandwidth has been observed. The antenna input resistance can be effectively changed by varying the spiral starting winding angle.
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关键词
electric impedance,microstrip antennas,spiral antennas,antenna input resistance,axial ratio bandwidth,broadside axial ratio,input impedance,modification factor,perturbed equiangular microstrip spiral antennas,spiral starting winding angle,dsl,voltage,image analysis,spirals
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