A high performance four port PIN diode switch for televisionbroadcasting applications |
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| Authors: | Keppke K.D. Perold W.J. van der Walt P.W. |
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| Affiliation: | Dept. of Electr. & Electron. Eng., Stellenbosch Univ.; |
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| Abstract: | A double-pole change-over shunt PIN diode switch for television bands IV and V is described. The switch is characterized by low insertion loss, good isolation, and excellent VSWR over an operating bandwidth of 650-860 MHz. It is suitable as a drop-in device in existing repeaters, requiring no returning of the RF circuitry. Although not designed to switch high-power signals, the switch should easily handle 50-100 W CW signals. The design is based on a short-step distributed bandpass filter, resulting in a very compact transmission-line structure |
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