Patent ID: 7924106

Claim:
An oscillation module comprising: a crystal oscillator oscillating a signal of a predetermined frequency; an amplifier amplifying the signal output from the crystal oscillator; and a noise elimination filter eliminating noise of the signal which is amplified by the amplifier, wherein the noise elimination filter includes a first crystal filter attenuating a signal in a low-frequency near band with respect to a main signal band of the signal, a second crystal filter attenuating a signal in a high-frequency near band with respect to the main signal band, and a third crystal filter attenuating a signal in a frequency far band lower than the low-frequency near band and in a frequency far band higher than the high-frequency near band while passing the signal in the main signal band, wherein the first and second crystal filters are band attenuation filters, the third crystal filter is a band pass filter, and the first, second, and third crystal filters have the same temperature characteristic.