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A new monopulse feeding network for Ku-band active phased array applications is proposed. In order to reduce the bulky structure, larger radiation loss, and undesired mutual coupling, a shield cavity-microstrip hybrid (SCH) technique is researched. The feeding network is integrated into the substrate with structure size of 7.9λ0 × 8.4λ0 at the center frequency for a 16 × 16 array scale, when all output...
In order to extend the scanning range of a phased array and maintain the scanning gain flatness, a novel millimeter-wave phased array with four linearly-arranged pattern reconfigurable elements is presented in this communication. The phased array has been designed, fabricated, measured and analyzed. The active patterns of each reconfigurable element are measured at different reconfigurable modes and...
Beamsteering for a phased array antenna generally causes the sidelobe level deterioration due to a variety of random and spatially correlated errors. Conventional array error analysis method is based on probability central limit theorem, and can be calculated by the probability statistic approach. In the paper, this reaserch presents a new estimation method of the phased array patterns by using numerical...
A feasible system error analysis and pattern calibration method for a planar array antennas is proposed. The errors of array elements with mutual coupling effects are rigorously taken into account by using an active element pattern technique. Other statistical errors including T/R modules and beam-forming networks are described with normal distributions. In addition, the mounted errors of array elements...
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