| 摘要 |
PROBLEM TO BE SOLVED: To provide a SAW oscillator for outputting signals different in frequency, by using a single SAW resonator and adjusting the relation between the frequency change amount and the control voltage of the SAW resonator by an impedance element. SOLUTION: The SAW oscillator 10 comprises: the SAW resonator 12 in which a first IDT 14 and a second IDT 16 are disposed in series on a piezoelectric substrate; a switch section 30 for making the phase of a signal inputted to the first IDT 14 equal to or different from that of a signal inputted to the second IDT 16; an oscillation stage 36 for supplying signals to the first IDT 14 and the second IDT 16; and an impedance element 40 connected to0 the SAW resonator 12. COPYRIGHT: (C)2007,JPO&INPIT
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