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Combined polygonal loop antenna with circularly polarised conical pattern

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2 Author(s)
Cai, M. ; Dept. of Electr. Eng., Nagaoka Univ. of Technol., Japan ; Ito, M.

A new type of low-profile antenna arrangement is introduced for producing an omnidirectional conical pattern of circularly polarised radiation, and named the combined polygonal loop antenna (CPLA). The maximum gain of 4 dBi is obtained at about 40 degrees off broadside, where cross-pol discrimination is more than 10 dB. Over a frequency range of 16% the radiation pattern remains almost unchanged and the input VSWR is lower than 2.0.

Published in:

Electronics Letters  (Volume:25 ,  Issue: 17 )