矩形微帶天線的帶寬和寬頻帶技術
BANDWIDTH AND BROADBANDING OF A RECTANGULAR MICROSTRIP ANTENNA
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摘要: 本文從空腔模型理論出發(fā),導出了矩形微帶天線方向圖帶寬和阻抗帶寬的一組計算公式和曲線,并用實驗結果作了驗證。歸納和討論了展寬頻帶的三條途徑和潛力,并提出了簡便易行的用枝節(jié)匹配與增厚基片相結合的展寬頻帶技術。已用厚0.05波長的實驗單元進行了雙枝節(jié)匹配,達到了13％的帶寬(駐波比不大于2)。
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關鍵詞:
Abstract: Based on the cavity modei theory, a set of simple formulas and graphs for calculating both the radiation pattern bandwidth and the impedance bandwidth of a rectangular microstrip antenna are presented with experimental verification. Three kinds of approaches to broaden the bandwidth and their potentiality are reviewed and discussed. A simple broadband teehnique by means of combination of stub-matching and increasing the antenna thickness is developed. A test element with the thickness of 0.05 wavelength has been matched by using two stubs, while the input VSWR is measured to be less than 2:1 over a 13% bandwidth. -
K. R. Carver and J. W. Mink, IEEE Trans. on AP, AP-29 (1981), 2.[2]Y. T. Lo, D. Solomon and W. F. Richards, IEEE Trans. on AP,AP-27(1979), 137.[3]A. G. Derneryd and A. G. Lind, ibid, AP-27 (1979), 846.[4]I. J. Bahl and P. Bhartia, Microstrip Antennas, Artech House, 1980, p. 62, 27.[5]Y. T. Lo, C. E. Skupien and S. S. Zhong, AD-A122404, Sept. 1982.[6]W. F. Richards, Y. T. Lo and D. D. Harrison, IEEE Trans. on AP,AP-29 (1981),38.[7]S. S. Zhong and Y. T. Lo, Electronics Letters, 19(1983), 298.[8]A. G. Derneryd and I. Karlson, IEEE Trans. on AP,AP-29(1981),140.[9]C. Wood, IEE Proc. H, 127(1980),231.[10]P. S. Hall, C. Wood and C. Garrett. Electronics Letters, 15(1979), 458.[11]H. F. Pues and A. R. ven de Capelle, IEE Conf. Publ. No. 195, 1981, pp. 402-405.[12]茅于寬執(zhí)筆,天線設備(中冊),1961年,第87頁. -
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