Oscillation circuit and electronic equipment

Details Oscillation circuit and electronic equipment Oscillation circuit and electronic equipment

2007-06-12

2007-06-12

Pascal, Robert (Department: 2817)

Oscillators

Solid state active element oscillator

Significant distributed parameter resonator

C331S1160FE, C331S1160FE, C331S154000, C331S179000, C331S096000, C333S193000, C333S195000

Reexamination Certificate

active

11096262

ABSTRACT:
An oscillation circuit comprises a SAW resonator having a pair of reflectors disposed on a piezoelectric substrate and a pair of IDTs which are set up in parallel between the pair of reflectors and which are constituted by teeth-of-a-comb electrodes; an inverter to which the pair of IDTs are connected in parallel; and a change-over unit which is provided between each of a pair of the teeth-of-a-comb electrodes constituting either of the IDTs of the pair of IDTs and the inverter and which changes over and connects an input side and an output side of the inverter connected to each of the pair of the teeth-of-a-comb electrodes.

REFERENCES:
patent: 4233573 (1980-11-01), Grudkowski
patent: 5016260 (1991-05-01), Masuda
patent: 5874866 (1999-02-01), Satoh et al.
patent: 6559736 (2003-05-01), Lu et al.
patent: 7005947 (2006-02-01), Iwashita et al.
patent: 02-124659 (1990-05-01), None
patent: 03-222511 (1991-10-01), None
patent: 06-310978 (1994-11-01), None
patent: 2925158 (1995-05-01), None
patent: 08-213838 (1996-08-01), None
patent: 2004-040421 (2005-02-01), None
International Search Report issued in the related PCT application No. PCT/JP2005/007185.

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