TEMPERATURE COMPENSATING STRUCTURE FOR CAVITY RESONATOR

PURPOSE: To automatically compensate the resonance frequency of a cavity resonator fluctuating by the yearly range of air temperature in the cavity resonator. CONSTITUTION: Temperature detected by a thermocouple 2 adhered closely on the cavity resonator 1 is outputted as a thermoelectromotive force...

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Bibliographische Detailangaben
1. Verfasser:	KIKUCHI YOSHIHITO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CONTROLLING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION REGULATING RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES WAVEGUIDES
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Beschreibung
Zusammenfassung:	PURPOSE: To automatically compensate the resonance frequency of a cavity resonator fluctuating by the yearly range of air temperature in the cavity resonator. CONSTITUTION: Temperature detected by a thermocouple 2 adhered closely on the cavity resonator 1 is outputted as a thermoelectromotive force by a compensation type reference circuit 3, and amplified by a voltage amplifier 4. An amplified thermoelectromotive force is converted to mechanical displacement by a piezoelectric actuator 5, and capacity in the cavity resonator 1 is increased/decreased by displacing the stud slider 7 of a resonance adjusting stud 6A in a direction of A-A' shown by arrow, which compensates the resonance frequency.