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A monopole antenna array with pairs of switchable parasitic strips is proposed to realize eight beams for azimuth omnidirectional coverage. The proposed antenna consists of one active monopole and four pairs of parasitic elements. Each pair of parasitic elements is formed by two switchable parasitic strips. By switching p-i-n diodes, a pair of parasitic strips can be used as a director or a reflector...
An antenna with four sets of PIN diodes-loaded parasitic strips and reflectors is designed to realize multiple reconfigurable radiation pattern. Parasitic strips are placed between the dipole and reflectors to change impedance of the dipole, thus reducing the distance between the dipole and the reflector. The size of the whole antenna is only 0.1λ0×0.1λ0. Moreover, by switching and controlling the...
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