CN102739156A - Vacuum-integrated triode-heating type constant temperature crystal oscillator - Google Patents
Vacuum-integrated triode-heating type constant temperature crystal oscillator Download PDFInfo
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- CN102739156A CN102739156A CN2012102269386A CN201210226938A CN102739156A CN 102739156 A CN102739156 A CN 102739156A CN 2012102269386 A CN2012102269386 A CN 2012102269386A CN 201210226938 A CN201210226938 A CN 201210226938A CN 102739156 A CN102739156 A CN 102739156A
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Abstract
The invention discloses a vacuum-integrated triode-heating type constant temperature crystal oscillator, which relates to the technical field of crystal oscillators and achieves the purpose of accelerating the starting speed. The oscillator comprises a base, a crystal oscillator and a temperature control circuit, wherein the crystal oscillator and the temperature control circuit are respectively arranged on the base; and the temperature control circuit is provided with a temperature sensor for detecting the working temperature of the crystal oscillator, and a heating triode for heating the crystal oscillator. The constant temperature crystal oscillator is characterized in that both the heating triode and the temperature sensor are fixed to a wafer of the crystal oscillator; the base is provided with a vacuum cavity; the crystal oscillator and the temperature control circuit are both positioned in the vacuum cavity; and a pin of the crystal oscillator and an outgoing line of the temperature control circuit are both connected to the outer part of the vacuum cavity. The oscillator provided by the invention is especially suitable for portable communication equipment.
Description
Technical field
The present invention relates to the crystal oscillator technology, particularly relate to a kind of technology of vacuum integrated triode heated type constant-temperature crystal oscillator.
Background technology
The thermostat crystal oscillator is called for short constant-temperature crystal oscillator; English abbreviates OCXO (Oven Controlled Crystal Oscillator) as; Be to utilize thermostat to make the temperature of quartz-crystal resonator keep constant, will change the output frequency variable quantity that causes by environment temperature and be cut to minimum crystal oscillator.The thermostat crystal oscillator is high-end frequency basic components, as the signal source benchmark, is widely used in communication, military project, instrument and equipment field.Difference between constant-temperature crystal oscillator and the common crystals is: the key components of constant-temperature crystal oscillator is operated in the isoperibol, to reach the reliable purpose of frequency stabilization.
Constant-temperature crystal oscillator mainly is made up of crystal resonator, crystal oscillating circuit, low noise voltage stabilizing circuit, temperature control circuit.The 12V voltage transitions that the low noise voltage stabilizing circuit is imported the outside is to supply with crystal resonator, crystal oscillating circuit, temperature control circuit after the 3V low noise voltage, for crystal resonator, crystal oscillating circuit, temperature control circuit provide stable low noise power supply.Be provided with the temperature sensor that is used for the testing ambient temperature in the temperature control circuit; And the heating module that is used to make operational environment to heat up; When temperature control circuit detects the operating ambient temperature reduction through temperature sensor, promptly increase the operating current of heating module, the caloric value of heating module is promoted; When temperature control circuit detects the operating ambient temperature rising through temperature sensor; Promptly reduce the operating current of heating module, the caloric value of heating module is reduced, thereby guarantee that ambient temperature is when changing for-40 ℃ between+85 ℃; The actual working environment variation of temperature amount of crystal resonator and crystal oscillating circuit has only small variation, thereby realizes the stable control purpose of frequency.
During constant-temperature crystal oscillator work, its internal work environmental temperature fluctuation is more little, and the stability of output frequency is also high more, so the accuracy of temperature control of temperature control circuit is the principal element of decision constant-temperature crystal oscillator performance.
The temperature control circuit of tradition constant-temperature crystal oscillator places near crystal resonator and the crystal oscillating circuit usually; So that quick response is made in the operating ambient temperature variation to crystal resonator and crystal oscillating circuit; Make the operating ambient temperature of crystal resonator and crystal oscillating circuit can keep constant; But the heating module of traditional constant-temperature crystal oscillator and crystal resonator are separate; Heating module is through the ambient temperature heating to crystal resonator periphery, realizes the indirect to crystal resonator, and could be heated to inflection temperature value (90 ℃-100 ℃) warm-up time that needs more than 3 minutes during therefore traditional constant-temperature crystal oscillator cold start-up with crystal resonator; This moment, the output frequency of traditional constant-temperature crystal oscillator just can reach stable; Therefore make that also traditional constant-temperature crystal oscillator is not suitable for being applied to the equipment that ask for something starts fast, such as portable communication devices such as military man-pack radio stations, and a lot of constant-temperature crystal oscillator all is applied on some portable communication apparatus; And portable communication apparatus all is through battery powered, and traditional constant-temperature crystal oscillator long defective warm-up time can increase battery consumption.
Summary of the invention
To the defective that exists in the above-mentioned prior art, it is short that technical problem to be solved by this invention provides a kind of warm-up time, the vacuum integrated triode heated type constant-temperature crystal oscillator that toggle speed is fast.
In order to solve the problems of the technologies described above, a kind of vacuum integrated triode heated type constant-temperature crystal oscillator provided by the present invention comprises base, and is installed in crystal resonator, the temperature control circuit on the base respectively;
Be provided with the temperature sensor that is used to detect the crystal resonator working temperature in the said temperature control circuit, and be used to heat the heating triode of crystal resonator;
It is characterized in that: said heating triode, temperature sensor all are fixed on the wafer of crystal resonator;
One vacuum cavity volume is arranged on the said base, and said crystal resonator and temperature control circuit all are positioned at the vacuum cavity volume, and the pin of crystal resonator and the lead-out wire of temperature control circuit all connect and cause vacuum cavity volume outside.
Further, the wafer loam cake of said crystal resonator is covered with a radiation heating copper sheet, and this radiation heating copper sheet does not contact with the wafer of crystal resonator mutually;
Said heating triode is positioned at the surface of the wafer of crystal resonator towards radiation heating copper sheet one side.
Vacuum integrated triode heated type constant-temperature crystal oscillator provided by the invention; Heating triode, temperature sensor are directly installed on the wafer of crystal resonator, utilize the heating triode that crystal resonator is directly heated, and under the heat-blocking action of vacuum environment; Reduce greatly with the heat exchange in the external world; Can crystal resonator be heated to inflection temperature soon, make the output frequency of crystal resonator reach stable, have weak point warm-up time; The characteristics that toggle speed is fast are particularly suitable for being applied in the portable communication apparatus.
Description of drawings
Fig. 1 is the internal structure sketch map of the vacuum integrated triode heated type constant-temperature crystal oscillator of the embodiment of the invention.
Embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
A kind of vacuum integrated triode heated type constant-temperature crystal oscillator as shown in Figure 1, that the embodiment of the invention provided comprises base 5, and is installed in crystal resonator 3, the temperature control circuit 4 on the base 5 respectively;
Be provided with the temperature sensor (not shown) that is used to detect crystal resonator 3 working temperatures in the said temperature control circuit 4, and be used to heat the heating triode 2 of crystal resonator 3;
It is characterized in that: said heating triode 2, temperature sensor all are fixed on the wafer of crystal resonator 3;
One vacuum cavity volume (not shown) is arranged on the said base 5, and said crystal resonator 3 and temperature control circuit 4 all are positioned at the vacuum cavity volume, and the lead-out wire of the pin of crystal resonator 3 and temperature control circuit 4 all connects and causes vacuum cavity volume outside.
The embodiment of the invention, the wafer loam cake of said crystal resonator 3 is covered with a radiation heating copper sheet 1, and this radiation heating copper sheet 1 does not contact with the wafer of crystal resonator 3 mutually;
Said heating triode 2 is positioned at the surface of the wafer of crystal resonator 3 towards radiation heating copper sheet 1 one sides.
In the embodiment of the invention, said crystal resonator is 3 overtone SC cutting quartz-crystal resonators, and said heating triode is the N-MOSFET triode, and said temperature control circuit, crystal oscillating circuit are prior art.
The operation principle of the embodiment of the invention is following:
During cold start-up; The wafer of crystal resonator produces electric oscillation under extraneous oscillating circuit drives; Temperature control circuit detects crystal resonator through temperature sensor and does not reach working temperature, and promptly control heating triode directly heats crystal resonator, under the heat reflection effect of the heat-blocking action of vacuum environment and radiation heating copper sheet; Can crystal resonator be heated to inflection temperature soon; Make the output frequency of crystal resonator reach stable, realize starting fast, in 30 seconds, can crystal resonator be heated to inflection temperature through test; Make the output frequency of crystal resonator reach stable, in 10 seconds, can make the output frequency of crystal resonator reach the frequency accuracy of 1PPM.
In the embodiment of the invention, each parts in the said temperature control circuit and the need of radiation heating copper sheet are selected no moisture absorption, no gas absorption, free of contamination material for use, to reach aging index request.
Claims (2)
1. a vacuum integrated triode heated type constant-temperature crystal oscillator comprises base, and is installed in crystal resonator, the temperature control circuit on the base respectively;
Be provided with the temperature sensor that is used to detect the crystal resonator working temperature in the said temperature control circuit, and be used to heat the heating triode of crystal resonator;
It is characterized in that: said heating triode, temperature sensor all are fixed on the wafer of crystal resonator;
One vacuum cavity volume is arranged on the said base, and said crystal resonator and temperature control circuit all are positioned at the vacuum cavity volume, and the pin of crystal resonator and the lead-out wire of temperature control circuit all connect and cause vacuum cavity volume outside.
2. vacuum integrated triode heated type constant-temperature crystal oscillator according to claim 1, it is characterized in that: the wafer loam cake of said crystal resonator is covered with a radiation heating copper sheet, and this radiation heating copper sheet does not contact with the wafer of crystal resonator mutually;
Said heating triode is positioned at the surface of the wafer of crystal resonator towards radiation heating copper sheet one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102269386A CN102739156A (en) | 2012-07-03 | 2012-07-03 | Vacuum-integrated triode-heating type constant temperature crystal oscillator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102269386A CN102739156A (en) | 2012-07-03 | 2012-07-03 | Vacuum-integrated triode-heating type constant temperature crystal oscillator |
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| CN102739156A true CN102739156A (en) | 2012-10-17 |
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| CN2012102269386A Pending CN102739156A (en) | 2012-07-03 | 2012-07-03 | Vacuum-integrated triode-heating type constant temperature crystal oscillator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104579227A (en) * | 2014-12-30 | 2015-04-29 | 广东大普通信技术有限公司 | Crystal oscillator |
| CN104836531A (en) * | 2015-03-13 | 2015-08-12 | 台湾晶技股份有限公司 | Miniaturized constant temperature crystal oscillator |
| CN107911116A (en) * | 2017-12-19 | 2018-04-13 | 江汉大学 | A kind of laser frequency standard signal source |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020158700A1 (en) * | 2000-03-17 | 2002-10-31 | Kenji Nemoto | Temperature-compensated crystal oscillator and method of temperature compensation |
| US20050258913A1 (en) * | 2004-05-19 | 2005-11-24 | Manabu Ito | Constant temperature type crystal oscillator |
| CN101295961A (en) * | 2007-04-25 | 2008-10-29 | 泰艺电子股份有限公司 | Temperature compensation type oscillator capable of remaining constant temperature |
| CN201360237Y (en) * | 2009-02-27 | 2009-12-09 | 武汉博畅通信设备有限责任公司 | Constant temperature crystal oscillator |
| CN201584944U (en) * | 2009-12-24 | 2010-09-15 | 广东大普通信技术有限公司 | Crystal oscillator with constant temperature control |
| CN202713227U (en) * | 2012-07-03 | 2013-01-30 | 上海鸿晔电子科技有限公司 | Vacuum integrated triode heating type constant temperature crystal oscillator |
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2012
- 2012-07-03 CN CN2012102269386A patent/CN102739156A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020158700A1 (en) * | 2000-03-17 | 2002-10-31 | Kenji Nemoto | Temperature-compensated crystal oscillator and method of temperature compensation |
| US20050258913A1 (en) * | 2004-05-19 | 2005-11-24 | Manabu Ito | Constant temperature type crystal oscillator |
| CN101295961A (en) * | 2007-04-25 | 2008-10-29 | 泰艺电子股份有限公司 | Temperature compensation type oscillator capable of remaining constant temperature |
| CN201360237Y (en) * | 2009-02-27 | 2009-12-09 | 武汉博畅通信设备有限责任公司 | Constant temperature crystal oscillator |
| CN201584944U (en) * | 2009-12-24 | 2010-09-15 | 广东大普通信技术有限公司 | Crystal oscillator with constant temperature control |
| CN202713227U (en) * | 2012-07-03 | 2013-01-30 | 上海鸿晔电子科技有限公司 | Vacuum integrated triode heating type constant temperature crystal oscillator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104579227A (en) * | 2014-12-30 | 2015-04-29 | 广东大普通信技术有限公司 | Crystal oscillator |
| CN104836531A (en) * | 2015-03-13 | 2015-08-12 | 台湾晶技股份有限公司 | Miniaturized constant temperature crystal oscillator |
| CN107911116A (en) * | 2017-12-19 | 2018-04-13 | 江汉大学 | A kind of laser frequency standard signal source |
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Application publication date: 20121017 |