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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TL;DR: In this paper, a simple circuit of a crystal oscillator operating at frequencies from several megahertz to a hundredmegahertz with a frequency stability of one part to 108 constructed using a dual gate MOSFET was described.
Abstract: Describes a simple circuit of a crystal oscillator operating at frequencies from several megahertz to a hundred megahertz with a frequency stability of one part to 108 constructed using a dual gate MOSFET. This RF transmitter accompanied by an RF-tuned receiver can be used as a high-resolution NMR spectrometer and as a precise Gaussmeter.
4 citations
Patent•
18 Aug 1975
TL;DR: In this paper, a low noise frequency source utilizes a varactor diode to form a parametric crystal oscillator which may be frequency multiplied to the desired microwave frequency, for radar applications.
Abstract: A low noise frequency source utilizes a varactor diode to form a parametric crystal oscillator which may be frequency multiplied to the desired microwave frequency, for radar applications.
4 citations
13 Apr 1999
TL;DR: In this paper, an oscillator circuit with SC-cut quartz resonator characterized by low frequency drift due to environmental conditions is presented, which is intended for generators based on direct temperature control and can be utilized also in thermocompensated oscillators.
Abstract: Investigation results are presented of an oscillator circuit with SC-cut quartz resonator characterized by low frequency drift due to environmental conditions. With this simple circuit C-mode excitation is possible without frequency selective networks. The circuit is intended for generators based on direct temperature control and can be utilized also in thermocompensated oscillators.
4 citations
29 May 1985
TL;DR: In this article, a small, small warm-up from -54OC t o w i t h i n lPP107 i n less than 5 D N u t e s.
Abstract: A n e w gene ra t ion of small, f a s t warm-up p r e c i s i o n oven ized c rys t a l o sc i l l a to r has been deve loped and is a v a i l a b l e f o r m i l i t a r and commercial use. The o v e r a l l s i z e is only 4.2 inJ and weighs 3.8 oz. (F igu re 1). T h e u n i t w i l l warm-up from -54OC t o w i t h i n lPP107 i n less than 5 d n u t e s . The s h o r t term s t a b i l i t y is neasured at b e t t e r t h a n 3PP1Ol2 p e r 10 seconds and long term s t a b i l i t y is less than 2.5PP101°/day over 40 days.
4 citations
Patent•
07 May 2002
TL;DR: An oscillator of frequency switching type according to the present invention can select and output any of a plurality of high frequencies, and can downsize a device as mentioned in this paper, which can be used to select a signal output from one crystal oscillator.
Abstract: An oscillator of frequency switching type according to the present invention can select and output any of a plurality of high frequencies, and can downsize a device. The oscillator of frequency switching type operates any of a plurality of crystal oscillators whose fundamental frequencies are different, and filters a signal output from the operating crystal oscillator with a SAW filter configured by forming a plurality of IDTs, which set passbands of different frequencies, on the same piezoelectric substrate, or with a filter arranged for each frequency. Or, a filter filtering a signal output from one crystal oscillator is selected.
4 citations