| 摘要 |
PURPOSE:To attain miniaturization and light weight of the device by using in common an oscillator used for an oscillator at a reception station and an oscillator at a transmission station in a satellite-mounted relay system converting once an ultrahigh frequency signal into an intermediate frequency signal. CONSTITUTION:A reception ultrahigh frequency signal is inputted respectively to input terminals 1a, 1b and 1c. This signal is inputted respectively to reception frequency converters 2a, 2b and 2c, where the signal is converted into a common intermediate frequency signal, which is inputted to a signal path switching device 4. An output of the signal path switching device 4 is inputted to transmission frequency converters 5a, 5b and 5c, where the signal is converted into a transmission ultrahigh frequency signal, which is transmitted to output terminals 7a, 7b and 7c. A local oscillating frequency applied to the reception frequency converters 2a, 2b and 2c and the transmission frequency converters 5a, 5b and 5c is given from a local oscillator 8, allowing to economize and miniaturize the device.
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