Two-band oscillating device

摘要

Disclosed is a two-band oscillating device in which coupling between two oscillators is made loose so that an oscillation signal can be supplied to an amplifier without reducing the level of the signal. The two-band oscillating device comprises: a first oscillator (1) for outputting an oscillation signal in a first frequency band; a second oscillator (2) for outputting an oscillation signal in a second frequency band; an amplifier (4) for amplifying either the oscillation signal in the first frequency band or the oscillation signal in the second frequency band; a first switching diode (3a) for supplying the oscillation signal in the first frequency band to the amplifier; and a second switching diode (3b) for supplying the oscillation signal in the second frequency band to the amplifier. The first oscillator or the second oscillator is operation in an alternative way, the first switching diode is made conductive in association with the operation of the first oscillator, and the second switching diode is made conductive in association with the operation of the second oscillator.