负载阻抗对圆极化双馈近方形贴片天线尺寸和波束宽度的影响

IEEE Antennas and Propagation Society International Symposium 1992 Digest Pub Date : 1992-06-18 DOI:10.1109/APS.1992.221625

D. Smith, R. Livingston, R. Jefferson

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引用次数: 0

摘要

本文建立了考虑输出端对天线载荷影响的双馈近方贴片天线模型。理论表明，所需的天线尺寸取决于天线所看到的负载阻抗。通过正确选择负载阻抗，可以改变天线的轴比带宽。设计工作在2.450 GHz的天线的典型结果表明，负载阻抗为R/sub /=1.0 M ω时，3db轴比带宽从约19 MHz扩展到R/sub /=50 ω .>时的130 MHz以上

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Effects of load impedance on the dimensions and beamwidth of a dual feed nearly square patch antenna for circular polarisations

The authors present a model for the dual-feed nearly square patch antenna which accounts for the loading effects of the output port upon the antenna. Theory indicates that the required antenna dimensions depend on the load impedance seen by the antenna. It is also seen that the axial ratio bandwidth of the antenna can be varied by correct choice of load impedance. Typical results of antennas designed to operate at 2.450 GHz indicate a broadening of the 3 dB axial ratio bandwidth from approximately 19 MHz with a load impedance of R/sub L/=1.0 M Omega to a value in excess of 130 MHz for R/sub L/=50 Omega .<>

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IEEE Antennas and Propagation Society International Symposium 1992 Digest

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