J. Sorocki, I. Piekarz, I. Slomian, K. Staszek, K. Wincza, S. Gruszczynski
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引用次数: 1
Abstract
A new approach to the design of a very broadband magic-T network focused on a single-layer realization has been proposed. In order to obtain wide bandwidth, a recently developed technique of bandwidth enhancement of tandem connected loosely coupled directional couplers has been employed. It has been shown that utilizing single-section coupled-line couplers one can realize a planar tandem coupler featuring frequency characteristics similar to these of a two-section coupled-line couplers. The proposed approach has been verified by the design and measurement of a 3-dB tandem coupler operating within 0.6-2.0 GHz frequency range with amplitude imbalance of ±0.45 dB, and the theoretical analysis of differential phase shaping to obtain magic-T properties.
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