CN218850730U - Low-phase-noise quartz crystal oscillator - Google Patents
Low-phase-noise quartz crystal oscillator Download PDFInfo
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- CN218850730U CN218850730U CN202221216448.3U CN202221216448U CN218850730U CN 218850730 U CN218850730 U CN 218850730U CN 202221216448 U CN202221216448 U CN 202221216448U CN 218850730 U CN218850730 U CN 218850730U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
An embodiment of the utility model provides a low phase noise quartz crystal oscillator relates to oscillator technical field. A low phase noise quartz crystal oscillator includes: the device comprises a vibration starting circuit, an amplifying circuit, a constant temperature control circuit, a power supply voltage stabilizing circuit and a shaping filter circuit; the input end of the oscillation starting circuit is connected with the signal input end, and the output end of the oscillation starting circuit is connected with the input end of the amplifying circuit; the output end of the amplifying circuit is electrically connected with the power supply voltage stabilizing circuit and the shaping filter circuit, and the shaping filter circuit outputs an oscillation signal; the input end of the power supply voltage stabilizing circuit is connected with the signal output end; the low-phase-noise quartz crystal oscillator can effectively reduce noise generated by the diode and the triode in the oscillation starting process, thereby reducing the sound effect influence on sound equipment. The use experience of the user is greatly improved. And the utility model has the advantages of simple structure, stability is good, is applicable to batch production, possesses wide application prospect.
Description
Technical Field
The utility model relates to an oscillator technical field especially relates to a low phase noise quartz crystal oscillator.
Background
The quartz crystal oscillator is a resonance device made by using the piezoelectric effect of the crystal body of quartz crystal silicon dioxide, and the basic constitution of the resonance device is roughly as follows: the quartz crystal resonator, quartz crystal or crystal, crystal oscillator for short, is made up by cutting out a slice of quartz crystal, which may be square, rectangular or circular, from a quartz crystal according to a certain orientation of pins, coating silver layers as electrodes on its two corresponding surfaces, welding a lead wire on each electrode to the pins, and packaging the shell.
In the prior art, in the existing quartz crystal oscillator, there are noises in the triode, the diode, the resistor, the capacitor, the inductor and other elements, and the noises may cause more noise of the quartz crystal oscillator, thereby affecting the sound source quality of the whole sound equipment.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the utility model provides a pair of low phase quartz crystal oscillator that makes an uproar to it is great to solve current low phase quartz crystal oscillator that makes an uproar noise, thereby influences the problem of whole audio equipment's sound source quality.
In order to solve the technical problem, an embodiment of the utility model provides a low phase noise quartz crystal oscillator, low phase noise quartz crystal oscillator includes: the device comprises a vibration starting circuit, an amplifying circuit, a constant temperature control circuit, a power supply voltage stabilizing circuit and a shaping filter circuit;
the input end of the oscillation starting circuit is connected with the signal input end, and the output end of the oscillation starting circuit is connected with the input end of the amplifying circuit;
the output end of the amplifying circuit is electrically connected with the power supply voltage stabilizing circuit and the shaping filter circuit, and the shaping filter circuit outputs an oscillation signal; the input end of the power supply voltage stabilizing circuit is connected with the signal output end;
the oscillation starting circuit comprises a triode Q1, the base of the triode Q1 is connected with the common point of an inductor L1 and a capacitor C5, the other end of the inductor L1 is connected with the common point of a capacitor C4, a resistor R7 and a resistor R6, the emitter of the triode Q1 is connected with the common point of the inductor L4 and a resistor R9, the other end of the resistor R9 is connected with the common point of a capacitor C8 and an inductor L2, the other end of the inductor L4 is connected with a common point connecting network formed by a reactance XT1, a capacitor C14, an inductor L4 and a capacitor C15, the collector of the triode Q1 is connected with the common point of an inductor L3 and an inductor L5, the two ends of the inductor L5 are connected with a capacitor C16 and a capacitor C13, the other end of the inductor L5 is connected with a resistor R10 and a capacitor C12 in series, the other end of the inductor L3 is connected with a capacitor C6, the other end of the capacitor C6 and the other end of the capacitor C5 are connected with a rectifier D1, the rectifier D1 is connected with a resistor R8 in series and then connected with capacitors C9 and C11, and R6 in series.
Optionally, the oscillation starting circuit further comprises: one end of the resistor R2 is connected with the power supply voltage stabilizing circuit, the other end of the resistor R2 is connected with a common point connecting circuit formed by the resistor R3, the resistor R4, the resistor R5, the capacitor C1, the capacitor C2 and the capacitor C3, and the resistor R3, the resistor R4, the resistor R5, the capacitor C1, the capacitor C2, the capacitor C3, the resistor R7, the capacitor C4, the capacitor C8 and the inductor L2 are grounded.
Optionally, the amplifying circuit comprises: the triode Q2, the base of the triode Q2 is connected with one end of a resistor R13, the other end of the resistor R13 is connected with a resistor R11 and a resistor R12 in a common point mode, the resistor R12 is connected with a capacitor C17 in a common point mode and grounded, the collector of the triode Q2 is connected with a resistor R16 and an inductor L8 in a series mode, the inductor L8 and the resistor R11 are connected with a grounded capacitor C20 in a common point mode, the emitter of the triode Q2 is connected with one end of a capacitor C21, the resistor R17 and a capacitor C23 in a common point mode, the other end of the capacitor C21 is connected with a common point connection network formed by a diode D2, a diode D3 and a capacitor C18, the capacitor C18 is connected with the grounded resistor of a resistor R14, and the resistor R17 is connected with a grounded inductor L9 and a grounded capacitor C24 in a common point mode.
Optionally, the transistor Q2 is of type AT41533 and adopts the package specification of SOT-32.
Optionally, the amplifying circuit further comprises: the triode Q3, the emitter of the triode Q3 is connected with one end of a resistor R19 and a resistor R20 in a common point mode, the other end of the resistor R19 is connected with a capacitor C26 and a grounding capacitor C27, the other end of the capacitor C26 is connected with a capacitor C23, the other end of the resistor R20 is connected with a grounding inductor L10 and a grounding capacitor C31, the base of the triode Q3 is connected with one end of a resistor R22, the other end of the resistor R22 is connected with one end of a grounding resistor R26, a grounding capacitor C32 and a resistor R25, the collector of the triode Q3 is connected with one end of a resistor R21, the other end of the resistor R21 is connected with one end of a capacitor C33 and an inductor L11 in a common point mode, and the other end of the capacitor C33 and the inductor L11 is connected with the other end of the resistor R25 in a common point mode.
Optionally, transistor Q3 is model BFR92AW and adopts SOT-32 package specification.
Optionally, the power supply voltage stabilizing circuit comprises: the power supply chip comprises a first pin of the power supply chip, the first pin of the power supply chip is connected with one end of a resistor R23 and one end of a capacitor C36 in a common point mode, a second pin of the power supply chip is connected with the other end of the resistor R23 and one end of a resistor R24 in a common point mode, a capacitor C30 and a capacitor C29 are connected at two ends of the resistor R23 and the resistor R24 in a common point mode, a third pin of the power supply chip is connected with a VDV terminal, a fourth pin of the power supply chip is connected with one end of the resistor R27 and the other end of the capacitor C36 in a common point mode, and the other end of the resistor R27 is connected with a grounding capacitor C40.
Optionally, the power chip is model LT1761.
Optionally, the shaping filter circuit comprises: one end of the capacitor C34 is connected with the resistor R25 and the capacitor C33 in a common point mode, the other end of the capacitor C34 is connected with the inductor L12 and the grounding capacitor C35 in a common point mode, the other end of the inductor L12 is connected with the inductor L13 and the grounding capacitor C37 in a common point mode, and the other end of the inductor L13 is connected with the capacitor C39 and the grounding capacitor C38 in a common point mode.
The utility model has the advantages that: the utility model provides a pair of low phase noise quartz crystal oscillator, low phase noise quartz crystal oscillator includes: the circuit comprises a vibration starting circuit, an amplifying circuit, a constant temperature control circuit, a power supply voltage stabilizing circuit and a shaping filter circuit; the input end of the oscillation starting circuit is connected with the signal input end, and the output end of the oscillation starting circuit is connected with the input end of the amplifying circuit; the output end of the amplifying circuit is electrically connected with the power supply voltage stabilizing circuit and the shaping filter circuit, and the shaping filter circuit outputs an oscillation signal; the input end of the power supply voltage stabilizing circuit is connected with the signal output end; the low phase noise quartz crystal oscillator of the application can effectively reduce the noise generated by the diode and the triode in the oscillation starting process, thereby reducing the sound effect influence on the sound equipment. The use experience of the user is greatly improved. And the utility model has the advantages of simple structure, stability is good, can satisfy the requirement of multiple occasion.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a low-phase-noise quartz crystal oscillator provided by the present invention;
fig. 2 is a circuit diagram of a vibration starting circuit provided by the present invention;
fig. 3 is a circuit diagram of an amplifying circuit provided by the present invention;
fig. 4 is a circuit diagram of a power supply voltage stabilizing circuit provided by the present invention;
fig. 5 is a circuit diagram of a shaping filter circuit provided by the present invention;
fig. 6 is a circuit diagram of a constant temperature control circuit provided by the present invention.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention, which is a part, rather than the entire, of the invention, and is not intended to limit the invention.
Example 1
As shown in fig. 1, the low phase noise quartz crystal oscillator includes: the circuit comprises a vibration starting circuit, an amplifying circuit, a constant temperature control circuit, a power supply voltage stabilizing circuit and a shaping filter circuit;
the input end of the oscillation starting circuit is connected with the signal input end, and the output end of the oscillation starting circuit is connected with the input end of the amplifying circuit;
the output end of the amplifying circuit is electrically connected with the power supply voltage stabilizing circuit and the shaping filter circuit, and the shaping filter circuit outputs an oscillation signal; the input end of the power voltage stabilizing circuit is connected with the signal output end.
As shown in fig. 2, the oscillation starting circuit includes a transistor Q1, a base of the transistor Q1 is connected to a common point of an inductor L1 and a capacitor C5, the other end of the inductor L1 is connected to a common point of a capacitor C4, a resistor R7 and a resistor R6, an emitter of the transistor Q1 is connected to a common point of an inductor L4 and a resistor R9, the other end of the resistor R9 is connected to a common point of a capacitor C8 and an inductor L2, the other end of the inductor L4 is connected to a common point connection network formed by a reactance XT1, a capacitor C14, an inductor L4 and a capacitor C15, a collector of the transistor Q1 is connected to a common point of an inductor L3 and an inductor L5, two ends of the inductor L5 are connected to a common point of a capacitor C16 and a capacitor C13, the other end of the inductor L5 is connected to a series of a resistor R10 and a capacitor C12 in series, the inductor L3 is connected to a capacitor C6, the other end of the capacitor C6 is connected to the other end of the capacitor C5 and a rectifier D1, the rectifier D1 is connected to a series of a resistor R8 and then connected to a capacitor C9 and a resistor R10 in series. The oscillation starting circuit further includes: one end of the resistor R2 is connected with the power supply voltage stabilizing circuit, the other end of the resistor R2 is connected with a common point connecting circuit formed by the resistor R3, the resistor R4, the resistor R5, the capacitor C1, the capacitor C2 and the capacitor C3, and the resistor R3, the resistor R4, the resistor R5, the capacitor C1, the capacitor C2, the capacitor C3, the resistor R7, the capacitor C4, the capacitor C8 and the inductor L2 are grounded.
Example 2
As shown in fig. 3, the amplifying circuit includes: the triode Q2, the base of the triode Q2 is connected with one end of a resistor R13, the other end of the resistor R13 is connected with a resistor R11 and a resistor R12 in a common point mode, the resistor R12 is connected with a capacitor C17 in a common point mode and grounded, the collector of the triode Q2 is connected with a resistor R16 and an inductor L8 in a series mode, the inductor L8 and the resistor R11 are connected with a grounded capacitor C20 in a common point mode, the emitter of the triode Q2 is connected with one end of a capacitor C21, the resistor R17 and a capacitor C23 in a common point mode, the other end of the capacitor C21 is connected with a common point connection network formed by a diode D2, a diode D3 and a capacitor C18, the capacitor C18 is connected with the grounded resistor of a resistor R14, and the resistor R17 is connected with a grounded inductor L9 and a grounded capacitor C24 in a common point mode. The transistor Q2 is of the type AT41533 and adopts the SOT-32 packaging specification. The amplifying circuit further includes: the triode Q3, the emitter of the triode Q3 is connected with one end of a resistor R19 and a resistor R20 in a common point mode, the other end of the resistor R19 is connected with a capacitor C26 and a grounding capacitor C27, the other end of the capacitor C26 is connected with a capacitor C23, the other end of the resistor R20 is connected with a grounding inductor L10 and a grounding capacitor C31, the base of the triode Q3 is connected with one end of a resistor R22, the other end of the resistor R22 is connected with one end of a grounding resistor R26, a grounding capacitor C32 and a resistor R25, the collector of the triode Q3 is connected with one end of a resistor R21, the other end of the resistor R21 is connected with one end of a capacitor C33 and an inductor L11 in a common point mode, and the other end of the capacitor C33 and the inductor L11 is connected with the other end of the resistor R25 in a common point mode. The type of the triode Q3 is BFR92AW, and the SOT-32 packaging specification is adopted.
Example 3
As shown in fig. 4, the power supply stabilizing circuit includes: the power supply chip comprises a first pin of the power supply chip, the first pin of the power supply chip is connected with one end of a resistor R23 and one end of a capacitor C36 in a common point mode, a second pin of the power supply chip is connected with the other end of the resistor R23 and one end of a resistor R24 in a common point mode, a capacitor C30 and a capacitor C29 are connected at two ends of the resistor R23 and the resistor R24 in a common point mode, a third pin of the power supply chip is connected with a VDV terminal, a fourth pin of the power supply chip is connected with one end of the resistor R27 and the other end of the capacitor C36 in a common point mode, and the other end of the resistor R27 is connected with a grounding capacitor C40. The power chip is model LT1761.
Example 4
As shown in fig. 5, the shaping filter circuit includes: one end of the capacitor C34 is connected with the resistor R25 and the capacitor C33 in a common point mode, the other end of the capacitor C34 is connected with the inductor L12 and the grounding capacitor C35 in a common point mode, the other end of the inductor L12 is connected with the inductor L13 and the grounding capacitor C37 in a common point mode, and the other end of the inductor L13 is connected with the capacitor C39 and the grounding capacitor C38 in a common point mode.
As shown in fig. 6, fig. 6 is a schematic circuit diagram of a constant temperature control circuit, and because the structure thereof is relatively conventional, the structure thereof is not repeated, and the low-phase-noise quartz crystal oscillator of the present application can effectively reduce the noise generated by the diode and the triode in the oscillation starting process, thereby reducing the influence on the sound effect of the sound equipment.
While the preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising one of \ 8230; \8230;" does not exclude the presence of additional like elements in a process, method, article, or terminal device that comprises the element. The above detailed description is made on the low-phase-noise quartz crystal oscillator provided by the present invention, and the specific examples are applied herein to explain the principles and embodiments of the present invention, and the descriptions of the above examples are only used to help understand the method and core ideas of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (9)
1. A low phase noise quartz crystal oscillator, said low phase noise quartz crystal oscillator comprising: the device comprises a vibration starting circuit, an amplifying circuit, a constant temperature control circuit, a power supply voltage stabilizing circuit and a shaping filter circuit;
the input end of the oscillation starting circuit is connected with the signal input end, and the output end of the oscillation starting circuit is connected with the input end of the amplifying circuit;
the output end of the amplifying circuit is electrically connected with the power voltage stabilizing circuit and the shaping filter circuit, and the shaping filter circuit outputs an oscillation signal; the input end of the power supply voltage stabilizing circuit is connected with the signal output end;
the starting oscillation circuit comprises a triode Q1, the base of the triode Q1 is connected with the common point of an inductor L1 and a capacitor C5, the other end of the inductor L1 is connected with the common point of a capacitor C4, a resistor R7 and a resistor R6, the emitting electrode of the triode Q1 is connected with the common point of the inductor L4 and the resistor R9, the other end of the resistor R9 is connected with the common point of a capacitor C8 and an inductor L2, the other end of the inductor L4 is connected with a common point connection network formed by a reactance XT1, a capacitor C14, the inductor L4 and a capacitor C15, the collecting electrode of the triode Q1 is connected with the common point of an inductor L3 and the inductor L5, the two ends of the inductor L5 are connected with the common point of a capacitor C16 and a capacitor C13, the other end of the inductor L5 is grounded through a series resistor R10 and a capacitor C12, the other end of the inductor L3 is connected with the capacitor C6, the other end of the capacitor C6 is connected with the other end of the capacitor C5 and a rectifier D1, and the rear end of the rectifier D1 is connected with the common point connection resistor R9 and the capacitor R11.
2. The low phase noise quartz crystal oscillator according to claim 1, wherein the oscillation starting circuit further comprises: one end of the resistor R2 is connected with the power supply voltage stabilizing circuit, the other end of the resistor R2 is connected with a common point connecting circuit formed by the resistor R3, the resistor R4, the resistor R5, the capacitor C1, the capacitor C2 and the capacitor C3, and the resistor R3, the resistor R4, the resistor R5, the capacitor C1, the capacitor C2, the capacitor C3, the resistor R7, the capacitor C4, the capacitor C8 and the inductor L2 are grounded in case of data.
3. The low phase noise quartz crystal oscillator of claim 1, wherein said amplification circuit comprises: the triode Q2, the base of triode Q2 is connected with one end of resistance R13, the other end of resistance R13 is connected with resistance R11 and resistance R12 in a concurrent point mode, resistance R12 and electric capacity C17 are connected with the ground in a concurrent point mode, the collector of triode Q2 is connected with resistance R16 and inductance L8 in a serial mode, inductance L8 and resistance R11 are connected on grounded capacitance C20 in a concurrent point mode, the emitting electrode of triode Q2 is connected with one end of electric capacity C21, resistance R17 and electric capacity C23 in a concurrent point mode, the other end of electric capacity C21 is connected with a concurrent point connection network formed by diode D2, diode D3 and electric capacity C18, electric capacity C18 is connected with the grounded resistance of resistance R14, and resistance R17 is connected with grounded inductance L9 and grounded capacitance C24 in a concurrent point mode.
4. The low phase noise quartz oscillator of claim 3, wherein said transistor Q2 is of type AT41533 and is packaged with SOT-32.
5. The low phase noise quartz crystal oscillator of claim 3, wherein said amplification circuit further comprises: the emitter of the triode Q3 is connected with one end of a resistor R19 and one end of a resistor R20 in a concurrent mode, the other end of the resistor R19 is connected with a capacitor C26 and a grounding capacitor C27, the other end of the capacitor C26 is connected with a capacitor C23, and the other end of the resistor R20 is connected with a grounding inductor
L10 is connected with grounded capacitor C31, triode Q3's base is connected with one end of resistance R22, resistance R22's the other end is connected with grounded resistor R26, grounded capacitor C32 and resistance R25's one end, triode Q3's collecting electrode is connected with one end of resistance R21, the other end of resistance R21 and the one end of electric capacity C33 and inductance L11 are connected in common point, the other end of electric capacity C33 and inductance L11 with the other end of resistance R25 is connected in common point.
6. The low phase noise quartz crystal oscillator according to claim 5, wherein said transistor Q3 is BFR92AW and is packaged with SOT-32.
7. The low phase noise quartz crystal oscillator of claim 1, wherein said power supply voltage regulator circuit comprises: the power chip, the first pin of power chip and resistance R23 and electric capacity C36's one end is connected in common point, the second pin of power chip with the other end of resistance R23 and the one end of resistance R24 are connected in common point, and electric capacity C30 and electric capacity C29 are connected in common point resistance R23 with resistance R24's both ends, the third pin and the VDV terminal of power chip are connected, the fourth pin and the one end of resistance R27 of power chip with electric capacity C36's the other end is connected in common point, resistance R27's the other end and grounded capacitance C40 are connected.
8. The low phase noise quartz crystal oscillator of claim 7, wherein the power chip is model number LT1761.
9. The low phase noise quartz crystal oscillator of claim 1, wherein the shaping filter circuit comprises: one end of the capacitor C34 is connected with the resistor R25 and the capacitor C33 in a common point mode, the other end of the capacitor C34 is connected with the inductor L12 and the grounding capacitor C35 in a common point mode, the other end of the inductor L12 is connected with the inductor L13 and the grounding capacitor C37 in a common point mode, and the other end of the inductor L13 is connected with the capacitor C39 and the grounding capacitor C38 in a common point mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221216448.3U CN218850730U (en) | 2022-05-18 | 2022-05-18 | Low-phase-noise quartz crystal oscillator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221216448.3U CN218850730U (en) | 2022-05-18 | 2022-05-18 | Low-phase-noise quartz crystal oscillator |
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| CN218850730U true CN218850730U (en) | 2023-04-11 |
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| CN202221216448.3U Active CN218850730U (en) | 2022-05-18 | 2022-05-18 | Low-phase-noise quartz crystal oscillator |
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