FIELD: radio engineering, communication.
SUBSTANCE: multi-pole antenna, having a dielectric substrate on which four identical half-wave dipoles are arranged symmetrically on a circle, each made in form of a resonance section of a periodic microstrip line with the width at the centre which is equal to a quarter of the average wavelength and linearly narrowing towards the peripheral region.
EFFECT: improved cross-polarisation properties while achieving rotating circular or elliptical polarisation and a uniform beam pattern in a wide frequency band, and overall dimensions of the antenna which are considerably smaller than the maximum operating wavelength.
6 cl, 6 dwg
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