Differential oscillation apparatus and modulator

Oscillators – With particular source of power or bias voltage

Reexamination Certificate

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Details

C331S167000, C332S106000

Reexamination Certificate

active

07965150

ABSTRACT:
It is an object of the present invention to shorten a time required until phases of output signals being output from two output terminals are inverted respectively from a start time of an oscillation in a differential oscillation apparatus. In a differential oscillation apparatus according to the present invention which includes a differential oscillator portion103having an external input terminal at a terminal of one transistor105and a switch circuit104, a first control signal generation circuit101for generating a first control signal to control an oscillation start and an oscillation stop of the differential oscillator portion103, and a second control signal generation circuit102for generating a second control signal input into the terminal of one transistor105of the differential oscillator portion103, when a phase relationship between collector currents flowing through two transistors105, 106is decided by the second control signal, output signals being output from two output terminals are opposite in phase from a start time of an oscillation.

REFERENCES:
patent: 7667550 (2010-02-01), Palma
patent: 2005/0179503 (2005-08-01), Shadwell
patent: 01-138804 (1989-05-01), None
patent: 09-121231 (1997-05-01), None
patent: 2001-189625 (2001-07-01), None
patent: 2005-049200 (2005-02-01), None
patent: 2005-253069 (2005-09-01), None
patent: 01/31784 (2001-05-01), None
patent: 2005-117256 (2005-12-01), None
Teshirogi et al.: “Residual-carrier-free burst oscillator for automotive UWB radar applications” Electronics Letters vol. 41, No. 9. Apr. 28, 2005.
International Search Report for PCT/JP2007/060539.

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