科研之友
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摘要
This paper presents a novel and simple circular disc monopole antenna with a tunable H-shaped ground plane which provides two separate resonant modes to achieve 2.4- and 5.5-GHz dual-band operation for wireless local area network (WLAN) applications. The proposed antenna is printed on a low cost substrate FR4 (epsilon(r)=4.4) and excited using a 50 Omega microstrip transmission line. Lower resonant mode of the antenna has an impedance bandwidth (|S-11|<-10 dB) of 700 MHz (2250-2950 MHz), and the upper resonant mode has a bandwidth of 1100 MHz (4900-6000 MHz). For validation purposes, an antenna prototype was fabricated and tested. The measured and simulated results show relatively good agreement and confirm satisfactory radiation characteristics. Effects of varying the widths of the arms of the H-shaped ground plane on antenna performance have also been studied.
- 出版日期2012-5
- 单位电子科技大学
