Dual-polarized Grid-slotted Microstrip Antenna with Enhanced Bandwidth and Low Profile
关键词:
Antenna feeds, microstrip antennas, polarization diversity, wideband antennas摘要
In this paper, a wideband dual-polarized microstrip antenna is proposed inspired by the concept of the periodic grid-slotted surface. Inherited the merit of low profile from microstrip antenna, a relatively wide bandwidth, i.e., up to 43% with reflection coefficient less than -10 dB, is achieved for both orthogonal polarizations. Multiple modes are excited due to the periodic slotloaded structure and well matched using crossed aperture-coupled Y-shaped feeding. The overall height of the proposed antenna is only 0.06 lambda0, lambda0 is the freespace wavelength at the centre frequency of 5.5 GHz. The proposed antenna is systematically studied in the numerical simulation and experiment, and results agree well. The proposed dual-polarized antenna provides an effective choice for wideband low profile antenna for the applications of base station.
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参考
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