The Effect of Shorting Post on Aze-shaped Circular Antenna Miniaturization
An edge shorted axe-shaped circular antenna is studied for miniaturization. The effect of the location and number of shorting post on the resonance frequency, impedance match and radiation pattern are studied. By inserting a shorting post near the edge of circular axe-shaped patch, the antenna size (resonates at 1.36 GHz) is reduced about 72％ compared to the antenna without shorting post (resonates at 2.58 GHz) and 91％ compared to the conventional circular antenna (resonates at 4.6 GHz). The effects of the distance between feeding point and shorting post, the number of shorting posts and the post radius are analyzed. The results show that by putting a shorting post near the edge of the axe-shaped circular patch, the resonant frequency is lower than a post near the center. Meanwhile, the feed should be excited near the shorting post for better impedance match. The effect of increasing the number of shorting post is also studied. If the number of shorting posts is increased to 3, the resonant frequency shifts to 1.48 GHz, which is higher than that with only one shorting post. However, the design offers stable return loss and broadside radiation pattern.
Jingxian Liu Salman Naeem Khan Sailing He
Centre for Optical and Electromagnetic Research Zhejiang University,Zijingang Campus,Hangzhou 310058 Department of Physics,COMSATS Institute of Information Technology Defense Road,Off Raiwind Road,Laho Centre for Optical and Electromagnetic Research Zhejiang University,Zijingang Campus,Hangzhou 310058
国际会议
Progress in Electromagnetics Research Symposium 2009(2009年电磁学研究新进展学术研讨会)(PIERS 2009)
北京
英文
1434-1437
2009-03-23（万方平台首次上网日期，不代表论文的发表时间）