![]() The input impedance behavior for a coaxial probe- fed patch antenna has been studied analytically by means of various models, including the transmission- line model and the cavity model, and by means of full- wave analysis. In both cases, the probe position or the inset length determines the input impedance. Coaxial probe feeding is sometimes advantageous for applications like active antennas, while microstrip line feeding is suitable for developing high- gain microstrip array antennas. In addition, by applying a curve- fit formula, it is possible to locate the exact inset length needed for a 5.Ī microstrip patch antenna can be fed either by coaxial probe or by an inset microstrip line. By using a straightforward transmission- line model, it is possible to accurately model and analyze microstrip- line inset- fed patch antenna designs. Microstrip patch antennas represent one family of compact antennas that offers the benefits of a conformal nature and the capability of ready integration with a communication system's printed circuitry. Low- profile, low- cost antennas support the operation of many modern communication systems. Design Inset- Fed Microstrip Patch Antennas.
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