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本文叙述几种新型对称的和不对称的不均匀耦合线定向耦合器。给出带线内导体的形状。求出对称定向耦合器的极限关系式。
This article describes several new types of symmetric and asymmetric inhomogeneous coupled linear directional couplers. Given the shape of the conductor inside the line. Obtain the limit relation of symmetric directional coupler.