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A Fully Symmetrical Crossover and Its Dual-Frequency Application

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5 Author(s)
Jin Shao ; Electr. Eng. Dept., Univ. of North Texas, Denton, TX, USA ; Han Ren ; Arigong, B. ; Changzhi Li
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In this paper, a new fully symmetrical four-port microstrip crossover and its dual-frequency application are presented. The proposed single-band crossover has a simple structure and an easily controlled bandwidth; and its dual-frequency application can provide flexible frequency ratio between the two working frequencies. Moreover, analytical design equations are derived using the even-odd-mode method. The final explicit design equations are concise. To verify the design concepts, both a single-band crossover working at 1 GHz and a dual-frequency crossover working at 1/2.3 GHz are fabricated and tested. The measurement results agree well with the design theory.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:60 ,  Issue: 8 )