① (中国科学院电磁辐射与探测技术重点实验室 北京 100190) ②(中国科学院大学 北京 100049) ③(中国电力科学研究院用电与能效所 北京 100085)
Design of Tapered-slot Antenna with Optimized End-fire Characteristics
WANG Youcheng①② DONG Mingyu③ ZHANG Feng① YE Shengbo① JI Yicai① FANG Guangyou① ZHANG Xiaojuan①
①(Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences, Beijing 100190, China) ②(University of Chinese Academy of Sciences, Beijing 100049, China) ③(China Electric Power Research Institute, Beijing 100085, China)
Based on optimized geometry structure of tapered slot antenna, an end-fire printed antenna is designed with rectangular-grooved and periodic structure. Its effects on the radiation pattern of antenna is studied and simulated. From 1 GHz to 3.5 GHz, those structures improve the end-fire characteristics of the antenna obviously. Finally, pairs of antennas are constructed and measured. The measured results show that VSWR is smaller than 2 and the gain is approximately equal to 7 dBi from 1 GHz to 3.5 GHz. The measured transfer characteristics results show that the antenna achieves a stable group delay and a low late-time ring. The antenna can be applied to the impulse radar.
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