A Millimeter-Wave Planar Dual-Band Array Antenna Having Individually LHCP and RHCP Radiation Characteristics

A Millimeter-Wave Planar Dual-Band Array Antenna Having Individually LHCP and RHCP Radiation Characteristics

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This article demonstrates a planar dual-band array antenna for millimeter-wave applications, which has a left-hand circular polarization and a fleshlight automatique right-hand circular polarization for two operating bands, respectively.By using aperture-fed stacked-curls, the proposed antenna can attain broad axial ratio (AR) bandwidths in both K- and Ka-bands through a single port.Meanwhile, two stacked-curls are designed to rotate in different directions for achieving orthogonal circular polarizations in two bands, respectively.

An $8 imes 8$ stacked-curls array antenna is designed and manufactured for verifications.The measured 3 dB AR bandwidths are 11.59% (18.

7-21 GHz) in the K-band and 9.93% (26.8-29.

6 GHz) in the Ka-band, with reflection coefficient lower than −10 dB.The maximum gain in K- and Ka-bands are 18.59 dB and 18.

13 dB, respectively.The proposed antenna can be used miracle academy clothing for developing compact satellite communication systems.