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首页> 外文期刊>IEEE Transactions on Microwave Theory and Techniques >Novel microstrip multifunction directional couplers and filters for microwave and millimeter-wave applications
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Novel microstrip multifunction directional couplers and filters for microwave and millimeter-wave applications

机译：适用于微波和毫米波应用的新型微带多功能定向耦合器和滤波器

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摘要

The design of a particular class of microstrip couplers and filters is presented. The synthesis functions obtained from the solution of first-order nonlinear differential equation of nonuniform lines with a loose coupling assumption are modified and validated for higher coupling values. The design employs a nonuniform coupled line configuration along which a realizable continuous coupling coefficient is obtained by modifying the reflection coefficient distribution function. This modification results in a frequency-selective coupling which minimizes the out-of-band coupling in the specified frequency range. As a result, it is possible to realize -3 dB directional couplers using double-coupled lines without the need for tandem connections or extreme photolithographic techniques. Experimental results for microwave band-pass and periodic couplers are presented together with the computed results. Potential applications of these components are discussed, and the work is extended to include millimeter-wave realization.
机译：介绍了特定类别的微带耦合器和滤波器的设计。修改并验证了具有松散耦合假设的非均匀线的一阶非线性微分方程解的合成函数，并验证了其较高的耦合值。该设计采用非均匀耦合线配置，通过修改反射系数分布函数，可以获得可实现的连续耦合系数。这种修改导致了频率选择耦合，该耦合使指定频率范围内的带外耦合最小化。结果，可以使用双耦合线来实现-3 dB定向耦合器，而无需串联连接或极端的光刻技术。给出了微波带通和周期耦合器的实验结果以及计算结果。讨论了这些组件的潜在应用，并将工作扩展到包括毫米波实现。

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