Printed-circuit waveguides with anisotropic substrates: a new leakage effect
Printed-circuit waveguides with anisotropic substrates: a new leakage effect
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具有各向异性基板的印刷电路波导：新的泄漏效应
DOI：
10.1109/mwsym.1989.38840
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
A. Oliner
中科院分区：
文献类型：
--
作者：
M. Tsuji;H. Shigesawa;A. Oliner
用各向异性介质材料作衬底时，发现了均匀印制电路中主模的一种新的功率泄漏效应。作者从物理推理和精确的定量计算两方面证明，在一定的临界频率以上，在合适的各向异性衬底上的均匀印刷电路波导，如微带线、槽线或共面波导(无论是有限宽度还是无限宽)上的主模都会向衬底上的表面波泄漏功率，并且最大泄漏率可能相当大。这种电力泄漏完全不同于发生在线路接合处或不连续处的泄漏或辐射到表面波中。
A new class of power leakage effects has been found for the dominant mode on uniform printed-circuit waveguides when anisotropic dielectric materials are used as substrates. The authors demonstrate, both from physical reasoning and by accurate quantitative calculations, that above a certain critical frequency the dominant mode on uniform printed-circuit waveguides, such as microstrip line, slot line, or coplanar waveguide (whether of finite or infinite width), on suitable anisotropic substrates leaks power into surface waves on the substrate, and that the maximum leakage rate can be rather large. This power leakage is entirely distinct from the leakage or radiation into surface waves that occurs at junctions or discontinuities on the line.<<ETX>>