Design and Application of Phased Array Antenna Subarray for Boundary Layer Wind Profile Radar
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Abstract:
The paper introduces the types of antenna systems for wind profile radar products at home and abroad. After the comparative study of various antenna systems, a fivebeam finite phasesweep phased array microstrip antenna subarray is designed. This antenna system consists of 21 square elements； each subarray contains 16 array elements, 4×4 square symmetric division, and the array element adopts the eastwest/northsouth twopoint coaxial backfeed feeding; in both sides in the subarrays, the equalamplitude and equalphase feeding networks are designed to realize horizontal polarization in eastwest and northsouth directions. The standing wave of all array elements is less than 1.2, improving the antenna detection sensitivity. The area of the phased array antenna and the weight of the antenna array are reduced. Combined with the subarray division, the Taylor weighting of the phased array antenna system is optimized. The antenna has the twodimensional stepping sweep function to form five beams in the airspace. It is applied to the TWP3 boundary layer wind profiler radar to improve the overall performance. The radar detection height is greater than 5 km.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.