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A near-isotropic circulary polarized antenna for space vehicles

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2 Author(s)
Galindo, V. ; Bell Telephone Laboratories, Inc., Whippany, NJ, USA ; Green, K.

The theoretical design and experimental test of a simple, lightweight, and reliable circularly polarized omnidirectional antenna is reported. The gain for one sense of circular polarization, compared with isotropic, is more than -3 dB over 99 percent of the far-zone sphere. Good agreement between theory and experiment has been obtained. The antenna consists of a ring of crossed slots on a short-circuited cylindrical waveguide that is excited by twoTE_{11}modes in phase and space quadrature.

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Antennas and Propagation, IEEE Transactions on  (Volume:13 ,  Issue: 6 )