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To verify the feasibility of vector modulation technology in active phased array antenna (APAA), a Ka band 8×8 active phased array antenna composed of vector modulators was developed. Closed loop calibration method has been applied to achieve a good consistency among 8×8 channels by measuring and compensating the channel errors of the APAA system. The measured radiation patterns after calibration...
In order to realize wide-band and low side-lobe of both E- and H-plane scanning Active Phased Array Antenna (APAA) for Ka-band, a 8*8 micro-strip patch APAA with 0.5 wavelength element spacing is analyzed in this paper. The passive patches in the rim of the antenna array can greatly decrease the side-lobe of 6 dB. The APAA of 1*8 elements with +/-40 degree scanning were designed, measured and analyzed.
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