Design of a Novel Monopulse Antenna System Using the Time-Modulated Antenna Arrays

被引：14
作者：
Chen, Yikai [1 ]
Yang, Shiwen [1 ]
Nie, Zaiping [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Elect Engn, Dept Microwave Engn, Chengdu 610054, Peoples R China
来源：
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING | 2010年 / 20卷 / 02期
关键词：
antenna arrays; time modulation; monopulse antennas; DIFFERENTIAL EVOLUTION STRATEGY; PATTERN SYNTHESIS; LINEAR ARRAYS; OPTIMIZATION; SUM;
D O I：
10.1002/mmce.20418
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A novel monopulse antenna for a tracking radar system is proposed using the time modulated antenna array technique. The time modulation technique applied in the antenna arrays overcomes file usual need for compromise between sum and difference beams and avoids the need for implementation of two separate feed networks. The time modulated antenna array also relaxes the error tolerance of the tracking accuracy from the amplitude and phase errors, due to the new, design freedom of "time" which can be controlled precisely and quickly. Moreover, the position of the target can be recovered by two reflected echoes from one previously transmitted pulse. thus the tracking errors resulting front the excitation errors and receiver noise in conventional antenna arrays can be greatly alleviated. Numerical results show, that with the aid of time modulation technique.. one stun beam and two difference beams can be simultaneously obtained either for the boresight or off-boresight target tracking. (C) 2010 Wiley Periodicals. Inc Int J RF and Micorwave CAE 20 163-169, 2010
引用
收藏
页码：163 / 169
页数：7
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