Topic
Crystal oven
About: Crystal oven is a research topic. Over the lifetime, 955 publications have been published within this topic receiving 10380 citations. The topic is also known as: oven-controlled crystal oscillator & OCXO.
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Patent•
19 Jan 2001
TL;DR: In this paper, a method of evaluating quality of a crystal unit, capable of performing quantitative measurement of an actual operation of the crystal unit which is to be oscillated in an actual oscillator to ensure an accurate quality evaluation, is provided.
Abstract: A method of evaluating quality of a crystal unit, capable of performing quantitative measurement of an actual operation of a crystal unit which is to be oscillated in an actual oscillator to ensure an accurate quality evaluation, is provided. The method includes increasing a DC input voltage of a crystal oscillator, the crystal oscillator having at least one AGC amplifier whose amplification rate varies depending on the DC input voltage and having a crystal unit connected thereto, measuring a maximum value of the DC input voltage at a start of oscillation of the crystal oscillator, and evaluating quality of the crystal unit by the measured maximum value.
1 citations
Patent•
08 Dec 1971
TL;DR: In this article, a multi-frequency signal generator employing a cantilever beam comb was proposed, where each beam has a different natural vibration frequency and was selectively coupled through capacitive pickups to frequency modulate a high frequency oscillator.
Abstract: A multi frequency signal generator employing a cantilever beam comb wherein each beam has a different natural vibration frequency. The beams are selectively coupled through capacitive pickups to frequency modulate a high frequency oscillator. The modulated oscillator frequency is passed through a frequency discriminator, and the amplified output of the discriminator supplies the signal generator output and also is applied to a magnetic drive circuit for sustaining the selected beam in vibration at its natural frequency.
1 citations
01 Aug 1970
TL;DR: In this paper, Capparelli and Verrazzani presented new techniques for building a variable frequency crystal oscillator based on the use of a negative inductor or capacitor, where the interval available for the frequency deviation is larger than the one existing between the natural frequencies f p and f s of the crystal.
Abstract: This letter refers to one by Capparelli and Verrazzani [1]. Its aim is to present new techniques for building a variable frequency crystal oscillator based on the use of a negative inductor or capacitor. The interval available for the frequency deviation is larger than the one existing between the natural frequencies f p and f s of the crystal. The spurious frequencies uncontrolled by the crystal are absent.
1 citations
06 Jul 1998
TL;DR: In this article, a low noise and highly stable microwave exciter system has been built for Cs atomic frequency standards using a sapphire loaded cavity oscillator which works at room temperature.
Abstract: A low noise and highly stable microwave exciter system has been built for Cs atomic frequency standards using a sapphire loaded cavity oscillator which works at room temperature. The construction and performance are presented.
1 citations
TL;DR: In this paper, the authors presented a theoretical analysis of a NEMS oscillator with a stretched circular plate, fabricated of two-dimensional crystals (graphene, bBN, MoS2 etc.), as a resonator.
1 citations