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A Study on the design of the Microstrip Patch Array Antenna for Doppler Radar  

강중순 (울산과학대학 전기전자학부)
손병문 (홍익대학교)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.6, no.4, 2002 , pp. 519-526 More about this Journal
Abstract
In this paper, a microstrip patch array antenna for a Doppler radar at 10.525GHz is desinged and fabricated. To be used for mobile radar system, the antenna is fabricated on a single layer laminate to resist a fire impact and is covered with the Teflon foam. To obtain the desired characteristics, the array antenna is designed 4$\times$8 array using a corporate 3-dB amplitude taper. Also, using square patch elements, the antenna can be converted to a circular polarized antenna later. The designed and fabricated array antenna has the reflection coefficient$({S_11})$ -53.498dB, the horizontal beam width of $10^{\circ}$, the vertical beam width of $18.8^{\circ}$, the gain of 21dBi, the bandwidth of 220MHz for VSWR<1.5 and a side lobe level of less than -17.5dB.
Keywords
안테나;마이크로스트립;도플러;
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