IEEE Transactions on Antennas and Propagation · 2015 · 61 citations · 8 references
EngineeringElectrical EngineeringAntennasMicrowave EngineeringWireless CommunicationsAntenna BandwidthAntenna DesignAntenna EfficiencyAntenna GainMicrowave AntennasSlot AntennasAntenna ApertureAntenna Impedance BandwidthAntenna Mutual CouplingImpedance BandwidthInput Impedance MatchingMaximum GainMutual CouplingSlot Array Antennas
A W-band 8 × 8 slot array antenna is proposed and fabricated by electroforming for high-precision manufacturing. The external mutual coupling between radiating shunt slots is compensated for input impedance matching and a uniform held distribution. The overall antenna aperture area is 473.1 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> with slot spacings of 2.8 and 2.64 mm in the transverse and longitudinal direction, respectively. The measured maximum gain is 26.8 dBi and the corresponding antenna efficiency is 81.9% at 94 GHz. The measured impedance bandwidth when the VSWR is less than 2.0 (-10 dB) is 8.3%, with a range from 89.9 to 97.6 GHz.
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