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A dual-polarized ceiling-mounted antenna, based on previous ceiling-mounted antennas is proposed in this letter. It consists of one vertical polarization unit and one horizontal polarization unit. The vertical polarization unit is a transformation of a monopole, looking like a tundish. And the horizontal polarization unit comprises of four dipoles on a substrate ring. The two units compose a nesting...
A simple compact dual-band dipole (48 mm × 12 mm × 0.8 mm) with shorting pins and slots is presented in this paper. The shorting pins helps to realize a compact dipole. The slots are composed of H-shape slots and comb-shape slots. The former is of help to expansion of the impedance band, and the latter to further compactness of the dipole. Its operating bandwidth is 600 MHz in the lower band and 270...
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