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A microstrip grid array antenna for 24 GHz Doppler sensor is proposed for the first time. It is designed on 0.787 mm thick Rogers Duroid 5880 (εr = 2.2 and tan δ = 0.0009) with 0.017 mm copper cladding. Wet etch PCB process is used to fabricate the grid array antenna for cost consideration. Dimensions of the antenna are 40 mm × 40 mm × 0.787 mm. Simulated results show that impedance bandwidth of the...
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