一種可控三陷波超寬帶天線設計與研究
doi: 10.11999/JEIT141566
基金項目:
國家自然科學基金(61201086),教育部博士學科點專項科研基金(20110162120044)和湖南省科技計劃項目(2014GK3022)
Design and Analysis of Controllable Tri-band-notched Ultrawide Band Antenna
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摘要: 為了避免如WiMax, WLAN和X頻段衛(wèi)星系統等窄帶通信系統對超寬帶通信系統的影響,該文提出一種具有可控三陷波特性的超寬帶天線。該天線通過在輻射貼片和接地板上開槽,并在基板背面增加環(huán)形寄生單元的方法實現三陷波特性。天線在3.1~10.6 GHz的超寬帶頻段內能夠有效地工作并抑制3種不同的窄帶通信系統的干擾。同時在環(huán)形寄生單元處增加開關設置,使天線能夠實現雙/三陷波的功能切換,并增強陷波性能。實測和仿真結果吻合,該天線實現了良好的陷波功能,在工作頻段內有良好的輻射方向特性。
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關鍵詞:
- 超寬帶天線 /
- 三陷波 /
- 可控性 /
- 環(huán)形寄生單元
Abstract: A controllable tri-band-notched UltraWide Band (UWB) antenna is presented to avoid the interference of services working in the UWB band such as WiMax, WLAN, and X-band satellite system applications. The tri-band-notched characteristics are achieved by etching slots on the radiating patch and the ground plane, and adding a parasitic ring unit on the back of substrate. The proposed antenna operates on the UWB (3.1~10.6 GHz) efficiently, and it can inhibit interference from three different kinds of narrow band communication systems. A switch is added on the parasitic ring unit in order to realize the conversion between dual band-notched and tri-band-notched functions. Simulated and measured results show that the proposed antenna provides excellent band-notched function on the rejectband and has nearly omnidirectional radiation patterns on the passband.-
Key words:
- UltraWide Band (UWB) antenna /
- Tri-band-notched /
- Controllable /
- Parasitic ring unit
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