Download PDF by Kin-Lu Wong: Design of Nonplanar Microstrip Antennas and Transmission

By Kin-Lu Wong

ISBN-10: 0471182443

ISBN-13: 9780471182443

A one-stop connection with the layout and research of nonplanar microstrip structures.Owing to their conformal potential, nonplanar microstrip antennas and transmission traces were intensely investigated over the last decade. but many of the amassed study has been too scattered around the literature to be invaluable to scientists and engineers engaged on those curved structures.Now, antenna specialist Kin-Lu Wong compiles and organizes the most recent examine effects and different state of the art advancements into an intensive survey of the features of microstrip antennas fixed on canonical nonplanar surfaces. Demonstrating various theoretical innovations and deducing the final features of nonplanar microstrip antennas from calculated effects, Wong completely addresses the issues of cylindrical, round, and conical buildings and provides readers robust layout and optimization tools.Up-to-date themes diversity from particular purposes of round and conical microstrip arrays to the curvature results at the research of cylindrical microstrip traces and coplanar waveguides. With 256 illustrations and an exhaustive record of references, layout of Nonplanar Microstrip Antennas and Transmission traces is an necessary consultant for antenna designers in instant and private communications and in radar platforms, and a useful reference for researchers and scholars drawn to this crucial know-how.

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73 times that of the fundamental TM,, mode [8], the effects of the TM, 1 mode and other higher-order modes on the characteristics of the TM,, mode can be ignored. Thus it is appropriate to use only one basis function in the C$ and z directions, respectively, to model the excited patch surface current density for the TM,, mode. 105) n=-m --m i: IW dk,

N. 77) are found to be satisfied by complex frequencies for a particular mode. This complex frequency, f =f’ + jf”, gives the resonant frequency f’ and the quality factor f’/2f” for the microstrip patch. The imaginary part of the complex resonant frequency also represents the radiation loss (the loss includes the surface-wave loss) of the microstrip structure. Since the microstrip patch is a resonant structure, the inverse of the quality factor also represents the half-power operating bandwidth for the microstrip patch as a radiator.

82), is analyzed and Characteristics Typical numerical results of the resonant frequency, half-power bandwidth, radiation pattern, and directivity for the TM,, mode are presented. 6 shows the dependence of the normalized resonant frequency (the resonant frequency is set to be unity when the substrate thickness approaches zero and the superstrate layer is absent) and the half-power bandwidth on the spacing S. The case of a superstrate layer directly loaded on the patch (S = 0) is also shown. It is seen that superstrate loading strongly reduces the resonant frequency of the microstrip patch for the case of S = 0.

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Design of Nonplanar Microstrip Antennas and Transmission Lines by Kin-Lu Wong


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