Dual-band oscillator

Details Dual-band oscillator Dual-band oscillator

2008-05-20

2008-05-20

Lee, Benny (Department: 2817)

Oscillators

With frequency adjusting means

Step-frequency change

C331S046000, C331S049000, C331S1170FE

Reexamination Certificate

active

07375601

ABSTRACT:
When two oscillation signals are output from a common terminal through switching, to reduce attenuation of the oscillation signals, a dual-band oscillator includes a first oscillating transistor for generating an oscillation signal in a first frequency band; a first inductor for supplying power to a collector of the first oscillating transistor; a first switching element for switching the first oscillating transistor; a second oscillating transistor for generating an oscillation signal in a second frequency band; a second inductor for supplying power to a collector of the second oscillating transistor; a second switching element for switching the second oscillating transistor; and an output terminal for outputting the oscillation signal in the first frequency band or in the second frequency band. The first switching element is disposed between the first inductor and the output terminal, and the second switching element is disposed between the second inductor and the output terminal.

REFERENCES:
patent: 6288615 (2001-09-01), Kobayashi
patent: 6501338 (2002-12-01), Nakano et al.
patent: 6590465 (2003-07-01), Ikarashi
patent: 6894573 (2005-05-01), Eckl et al.
patent: 7042297 (2006-05-01), Kawagishi et al.
patent: 2003-60433 (2003-02-01), None

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