波導縫隙陣列天線設(shè)計
The Design of the Longitudinal Slot Array of Waveguide's Wider Side
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摘要: 根據(jù)等效磁流片法對矩形波導寬邊縱縫陣面進行分析設(shè)計，采用擬牛頓法對陣面參數(shù)求解，設(shè)計中考慮了波導內(nèi)、外互耦的影響，孤立縫的自導納采用矩量法獲得，計算中考慮壁厚。陣列單元的結(jié)構(gòu)與參數(shù)采用孤立縫的精確分析結(jié)果，從而加快了迭代速度。以S波段24單元縫隙陣的陣面分析計算和設(shè)計制作為例，測試與仿真的天線特性符合良好。
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關(guān)鍵詞:
- 縫隙陣列天線;矩形波導;矩量法;互耦
Abstract: The longitudinal slot array of rectangular waveguide's wider side is analyzed and designed according to the equivalent magnetic current. The parameters of the array are obtained with the method of quasi-Newton, and the inner and external coupling coefficients are calculated and taken into account. Because the admittance of single slot is calculate with MOM, and the thickness of waveguide's wall is considered, the convergent rate is enhanced. As an example, an S-waveband slot array of 24 elements is designed, and the measured and simulated results are agreed well with each other. -
Elliot R S. Antenna Theory and Design. US: Prentice-Hall Inc.1981:408-410.[2]Elliot R S, Loughlin W R O. The design of slot arrays including internal mutual coupling. IEEE Trans. on Antennas Propagat.,1986, 34(9): 1149-1154.[2]Lyon R W, Sangster A J. Efficient moment method analysis of radiating slots in a thick-walled rectangular waveguide. IEE Proc.-H, 1981, 128(4): 197- 205.[3]Elliot R S. An improved design procedure for small array of shunt slots[J].IEEE Trans. on Antennas Propagat.1983, 31(1 ):48-53[4]王偉,方一,呂善偉.平面波導縫隙陣列陣面參數(shù)設(shè)計中的收斂問題.系統(tǒng)工程與電子技術(shù),1993,(9):12-20.[5]王偉.高速高強度飛行器天線罩的研究與實踐.[博士論文],北京:北京航空航天大學,2002年2月. -
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