Quartz resonator cut to compensate for static and dynamic thermal transients

Signal generation apparatus comprising:

• a quartz crystal resonator having a selected crystallographic orientation that is equal to (yxwl) 21.93.degree./33.93.degree. .+-.2.degree. for providing static and dynamic thermal transient compensation, and having first and second thickness modes of vibration in response to an electric field applied thereto, vibration in each of said modes being characterized by a selected frequency-temperature deviation characteristic;
• means for generating and supplying said electric field to said quartz crystal resonator and for isolating the first and second frequency signals of said first and second modes of vibration, respectively;
• and
• compensation means coupled to receive at least one of said first and second frequency signals for production of an output signal that is relatively independent of the temperature induced deviations of said first and second frequency signals, one of said first and second frequency signals received by the compensation means being representative of the temperature of said quartz crystal resonator and used to generate an intermediate signal used in the generation of the output signal.