CN203014764U - Switching, distribution and amplification device of low-phase noise frequency standard signal - Google Patents

Switching, distribution and amplification device of low-phase noise frequency standard signal Download PDF

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Publication number
CN203014764U
CN203014764U CN 201220742628 CN201220742628U CN203014764U CN 203014764 U CN203014764 U CN 203014764U CN 201220742628 CN201220742628 CN 201220742628 CN 201220742628 U CN201220742628 U CN 201220742628U CN 203014764 U CN203014764 U CN 203014764U
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China
Prior art keywords
frequency standard
module
standard signal
signal
circuit
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Expired - Fee Related
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CN 201220742628
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Chinese (zh)
Inventor
陈旭东
吕桂华
刘和平
刘锋
李和战
郭向阳
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63921 Troops of PLA
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63921 Troops of PLA
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Abstract

The embodiment of the utility model discloses a switching, distribution and amplification device of a low-phase noise frequency standard signal. The switching, distribution and amplification device of the low-phase noise frequency standard signal belongs to the electronic information technology field, and solves the technical problems in the prior art that the multipath output of the frequency standard signal and the low-phase noise frequency standard signal are difficult to realize and support. The switching, distribution and amplification device of the low-phase noise frequency standard signal comprises an input switching module, a distinguishing amplifying module and a power supply module. The input switching module receives two-path frequency standard signals and a switching control signal, and selects one of the two-path frequency standard signals to output according to the switching control signal; the input end of the distinguishing amplifying module is connected with the output end of the input switching module, and the frequency standard signal outputted by the input switching module is distinguished and amplified into at least two-path frequency standard signals; and the power supply module is connected with and supplies power to the input switching module and the distinguishing amplifying module. The switching, distribution and amplification device of the low-phase noise frequency standard signal can be used in the application fields, such as weapon test, aviation, spaceflight, etc.

Description

A kind of low frequency marking of making an uproar is mutually switched the distribution multiplying arrangement
Technical field
The utility model belongs to electronic information technical field, is specifically related to a kind of low frequency marking of making an uproar mutually and switches the distribution multiplying arrangement.
Background technology
Continuous progress along with electronic information technology, every field is increasing to the demand of frequency standard signal, required precision is also more and more higher, and particularly in the high-end applications such as weapon test, Aero-Space, the importance of low phase noise frequency standard signal highlights day by day.
High-precision frequency standard signal is the important guarantee of realizing that split-second precision is unified.The precision of the frequency standard signal of timing equipment frequency source (such as high stability crystal oscillator, atomic clock etc.) output is higher, and phase noise is lower, but because the restriction that is subject to load capacity generally only has one road frequency standard signal output, can not be directly used in multi-user system.Therefore, prior art is difficult to realize supporting multichannel output and the low frequency standard signal of phase noise.
The utility model content
The utility model embodiment provides a kind of low frequency marking of making an uproar mutually to switch to distribute multiplying arrangement, has solved the technical problem that is difficult to realize to support multichannel output and the low frequency standard signal of phase noise in the prior art.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
The frequency marking of should low making an uproar is mutually switched the distribution multiplying arrangement and is comprised the input handover module, distinguishes amplification module and power module;
Described input handover module receives the two-way frequency standard signal, and switch-over control signal, and selects road frequency standard signal in described two-way frequency standard signal to export according to described switch-over control signal;
The input of described differentiation amplification module is connected with the output of described input handover module, the frequency standard signal of described input handover module output is distinguished be enlarged into two-way frequency standard signal at least;
Described power module is connected with described differentiation amplification module with described input handover module, is described input handover module and the power supply of described differentiation amplification module.
Preferably, described input handover module comprises input unit and switch unit;
Described input unit receives the two-way frequency standard signal, and described two-way frequency standard signal is carried out impedance matching and filtering processing;
Described switch unit receives switch-over control signal, and selects road frequency standard signal in described two-way frequency standard signal to export according to described switch-over control signal.
Preferably, described differentiation amplification module comprises two identical differentiations amplification submodules;
Each described differentiation is amplified submodule and is comprised the two-stage calculation amplifying circuit, and wherein the first order is 1 operational amplification circuit, and the second level is 12 operational amplification circuits.
Each described operational amplification circuit comprises operational amplifier LMH6702, and biasing circuit, feedback circuit, filter circuit and impedance matching circuit.
Further, the frequency marking of should low making an uproar is mutually switched the distribution multiplying arrangement and is also comprised the frequency marking monitoring modular that is connected with described differentiation amplification module with described input handover module, described frequency marking monitoring modular is to being input to the frequency standard signal of described input handover module, and the frequency standard signal of described differentiation amplification module output carries out power monitoring.
Preferably, described frequency marking monitoring modular comprises received signal strength indicator (Received Signal Strength Indicator, RSSI) circuit, is provided with logarithmic amplifier AD8310 in described RSSI circuit.
Further, the frequency marking of should low making an uproar is mutually switched the distribution multiplying arrangement and is also comprised light-emitting diode (the Light Emitting Diode that is connected with described power module with described input handover module, described differentiation amplification module, LED) indicating module, described LED indicating module shows described input handover module, the operating state of described differentiation amplification module and described power module.
Preferably, be provided with four-operational amplifier LM324 in described LED indicating module.
Preferably, the two-way frequency standard signal of described input handover module reception is Timing Signal.
Compared with prior art, technique scheme provided by the utility model has following advantage: the frequency standard signal that the two-way phase noise is low inputs to the input handover module, can be therein one road frequency standard signal when unavailable, the switch-over control signal of being inputted according to the outside by the input handover module switches to another road frequency standard signal, to realize the Hot Spare in frequency standard signal source, improve the reliability of system.After frequency standard signal inputs to the differentiation amplification module from the input handover module, distinguish amplification module this frequency standard signal differentiation is enlarged into the lower frequency standard signal of two-way phase noise at least, with the output of support multichannel frequency standard signal, thereby multichannel output and the low frequency standard signal of phase noise have been realized supporting.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, during the below will describe embodiment, the accompanying drawing of required use is done to introduce simply, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The low frequency marking of making an uproar mutually that Fig. 1 provides for embodiment 1 of the present utility model is switched the schematic diagram of the internal structure of distributing multiplying arrangement;
The low frequency marking of making an uproar mutually that Fig. 2 provides for embodiment 2 of the present utility model is switched the schematic diagram of the internal structure of distributing multiplying arrangement;
Fig. 3 is the schematic diagram of input handover module in embodiment 2 of the present utility model;
Fig. 4 distinguishes the schematic diagram that amplifies submodule in embodiment 2 of the present utility model;
Fig. 5 is the circuit diagram of operational amplification circuit in embodiment 2 of the present utility model;
Fig. 6 is the circuit diagram of RSSI circuit in embodiment 2 of the present utility model;
Fig. 7 is the circuit diagram of LED indicating module in embodiment 2 of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skills obtain under the prerequisite of not paying creative work belongs to the scope that the utility model is protected.
Embodiment 1:
As shown in Figure 1, the frequency marking switching of making an uproar mutually of hanging down that the utility model embodiment provides distributes multiplying arrangement to comprise:
Input handover module 1 is used for receiving frequency standard signal A, the B that two-way is inputted, and switch-over control signal, and selects one road frequency standard signal output from A, B two-way frequency standard signal according to switch-over control signal.Preferably, frequency standard signal A and frequency standard signal B are the frequency standard signal of timing equipment frequency source output, and frequency range is 5MHz-20MHz, and power bracket is 4dBm-13dBm, the frequency standard signal phase noise of high stability crystal oscillator, the source output of atomic clock equifrequent is lower, has higher signal accuracy.
Differentiation amplification module 2 is used for receiving the frequency standard signal of input handover module 1 output, and this frequency standard signal differentiation is enlarged into two-way frequency standard signal at least.
Power module 3 is used to above-mentioned input handover module 1 and distinguishes amplification module 2 power supplies.Power module 3 is selected the low ripple linear power supply, and electric power output voltage is through the backward input handover module 1 of Π type filter circuit filtering processing and distinguish amplification module 2 power supplies.
The low frequency marking of making an uproar mutually that the utility model embodiment provides is switched the distribution multiplying arrangement, the frequency standard signal that the two-way phase noise is low inputs to input handover module 1, can be therein one road frequency standard signal when unavailable, the switch-over control signal of being inputted according to the outside by the input handover module switches to another road frequency standard signal, to realize the Hot Spare in frequency standard signal source, improve the reliability of system.After frequency standard signal inputs to differentiation amplification module 2 from input handover module 1, distinguish amplification module 2 this frequency standard signal differentiation is enlarged into the lower frequency standard signal of two-way phase noise at least, with the output of support multichannel frequency standard signal, thereby multichannel output and the low frequency standard signal of phase noise have been realized supporting.
Embodiment 2:
The present embodiment is further expanding on the basis of embodiment 1, and as shown in Figures 2 and 3, in the present embodiment, the input handover module specifically comprises:
Input unit 11 is used for receiving the two-way frequency standard signal, and carries out respectively impedance matching by 111 pairs of two-way frequency standard signals of impedance matching circuit wherein, carries out filtering by 112 pairs of two-way frequency standard signals of filtering treatment circuit and processes.
Switch unit 12 is used for receiving outside switch-over control signal, in the present embodiment with gate signal (Transistor-Transistor Logic, TTL) level as switch-over control signal.Be provided with dry-reed relay in switch unit 12, select road frequency standard signal in the two-way frequency standard signal to export according to the switch-over control signal that receives by dry-reed relay.
Outside switch-over control signal input interface in frequency standard signal input interface in above-mentioned input unit 11 and switch unit 12 is insulation bayonet nut connector (Bayonet Nut Connector, BNC) female seat.
Further, as Fig. 2 and shown in Figure 4, in the present embodiment, distinguish amplification module 2 and comprise two identical differentiations amplification submodules 20.Each is distinguished amplification submodule 20 and comprises the two-stage calculation amplifying circuit, and wherein the first order is 1 operational amplification circuit 2-1, and the second level is 12 operational amplification circuit 2-2.
Distinguish amplification module 2 with input between handover module 1 adopt SMA(Sub-Miniature-A) interface is connected, input to from input handover module 1 frequency standard signal of distinguishing amplification module 2 and be divided into two-way, input respectively two and distinguish amplification submodule 20, and distinguish to amplify to distinguish in submodule 20 at each and be enlarged into 12 road frequency standard signals, namely distinguish amplification module 2 and the frequency standard signal of input is distinguished altogether be enlarged into 24 road frequency standard signals.In addition, the output interface of 24 road frequency standard signals is insulation BNC female seat.
As shown in Figure 5, in distinguishing amplification submodule 20, each operational amplification circuit includes high-speed low-noise current feedback operational amplifier LMH6702, and peripheral biasing circuit, feedback circuit, filter circuit and the impedance matching circuit that is comprised of the low noise resistance capacitance.Wherein C1 is input filter capacitor; C2, R2, R3, R4 consist of biasing circuit; C23, R22, C25 consist of electric source filter circuit; C22, R24, R25 consist of feedback circuit; R26, C24 consist of the output matching filter circuit.Can change by the adjustment to the feedback circuit parameter power of output frequency standard signal in discharge circuit, thereby realized differentiation and amplification to the frequency standard signal of input, distinguished by 1 tunnel input under the prerequisite that does not change the frequency standard signal phase noise characteristic and be enlarged into 24 tunnel outputs.
Further, as shown in Figure 2, the low frequency marking of making an uproar mutually in the utility model embodiment is switched the distribution multiplying arrangement, also comprises frequency marking monitoring modular 4, be used for being input to 2 road frequency standard signals of input handover module 1, and 24 road frequency standard signals of distinguishing amplification module 2 outputs carry out power monitoring.Amplification module 2 is similar with distinguishing, and frequency marking monitoring modular 4 also comprises two identical frequency marking monitoring submodules 40.
Include received signal strength indicator (Received Signal Strength Indicator in each frequency marking monitoring submodule 40, RSSI) circuit, as shown in Figure 6, be provided with the multistage demodulating logarithmic amplifier AD8310 with high speed Voltage-output in the RSSI circuit, AD8310 can carry out demodulation output to direct current signal or lower than the AC signal of 440MHz.Under the cooperation of peripheral circuit, AD8310 is Voltage-output with monitored frequency standard signal power transfer, and the RSSI circuit just can determine by the output voltage of monitoring AD8310 whether the watt level of monitored frequency standard signal satisfies the output requirement.In the present embodiment, the components and parts in AD8310 and peripheral circuit thereof are all selected low-noise device.
Further, the low frequency marking of making an uproar mutually that the utility model embodiment provides is switched the distribution multiplying arrangement, also comprise light-emitting diode (Light Emitting Diode, LED) indicating module 5, be used for the operating state that shows input handover module 1, distinguishes amplification module 2 and power module 3.
As shown in Figure 7, be provided with four-operational amplifier LM324 and accessory circuit thereof with differential input in LED indicating module 5.LM324 compares the signal that receives with corresponding reference voltage, and realize the control of each LED light by comparative result, thereby realize 2 kinds of states of switch unit, the state of 2 road frequency standard signals inputs, state and the power supply status indication of totally 29 LED light of 24 road frequency standard signals outputs.
The low frequency marking of making an uproar mutually that the utility model embodiment provides is switched the distribution multiplying arrangement, compare with embodiment 1, can monitor the frequency standard signal of input, output, and the state of each road frequency standard signal is shown by LED light, can improve real-time and the intuitive of system.In addition, in the present embodiment, each components and parts all adopt high accuracy, low components and parts of making an uproar mutually, and therefore the frequency standard signal of the multichannel output of making an uproar mutually very low can be provided.
Certainly, compare with embodiment 1, the power module in the present embodiment except for input handover module and the power supply of differentiation amplification module, is also the power supply of frequency marking monitoring modular and LED indicating module.
The above; it is only embodiment of the present utility model; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement are within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.

Claims (10)

1. the one kind low frequency marking of making an uproar is mutually switched the distribution multiplying arrangement, it is characterized in that: comprise the input handover module, distinguish amplification module and power module;
Described input handover module receives the two-way frequency standard signal, and switch-over control signal, and selects road frequency standard signal in described two-way frequency standard signal to export according to described switch-over control signal;
The input of described differentiation amplification module is connected with the output of described input handover module, the frequency standard signal of described input handover module output is distinguished be enlarged into two-way frequency standard signal at least;
Described power module is connected with described differentiation amplification module with described input handover module, is described input handover module and the power supply of described differentiation amplification module.
2. multiplying arrangement according to claim 1, it is characterized in that: also comprise the frequency marking monitoring modular that is connected with described differentiation amplification module with described input handover module, described frequency marking monitoring modular is to being input to the frequency standard signal of described input handover module, and the frequency standard signal of described differentiation amplification module output carries out power monitoring.
3. multiplying arrangement according to claim 1 and 2, it is characterized in that: also comprise the LED indicating module that is connected with described power module with described input handover module, described differentiation amplification module, described LED indicating module shows described input handover module, the operating state of described differentiation amplification module and described power module.
4. multiplying arrangement according to claim 1, it is characterized in that: described input handover module comprises input unit and switch unit;
Described input unit receives the two-way frequency standard signal, and described two-way frequency standard signal is carried out impedance matching and filtering processing;
Described switch unit receives switch-over control signal, and selects road frequency standard signal in described two-way frequency standard signal to export according to described switch-over control signal.
5. multiplying arrangement according to claim 1 is characterized in that: described differentiation amplification module comprises that two identical differentiations amplify submodules;
Each described differentiation is amplified submodule and is comprised the two-stage calculation amplifying circuit, and wherein the first order is 1 operational amplification circuit, and the second level is 12 operational amplification circuits.
6. multiplying arrangement according to claim 5, it is characterized in that: each described operational amplification circuit comprises operational amplifier LMH6702, and biasing circuit, feedback circuit, filter circuit and impedance matching circuit.
7. multiplying arrangement according to claim 2, it is characterized in that: described frequency marking monitoring modular comprises the received signal strength indicator circuit.
8. multiplying arrangement according to claim 7, is characterized in that: be provided with logarithmic amplifier AD8310 in described received signal strength indicator circuit.
9. multiplying arrangement according to claim 1, is characterized in that: be provided with four-operational amplifier LM324 in described LED indicating module.
10. multiplying arrangement according to claim 1 is characterized in that: the two-way frequency standard signal that described input handover module receives is Timing Signal.
CN 201220742628 2012-12-28 2012-12-28 Switching, distribution and amplification device of low-phase noise frequency standard signal Expired - Fee Related CN203014764U (en)

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Application Number Priority Date Filing Date Title
CN 201220742628 CN203014764U (en) 2012-12-28 2012-12-28 Switching, distribution and amplification device of low-phase noise frequency standard signal

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Application Number Priority Date Filing Date Title
CN 201220742628 CN203014764U (en) 2012-12-28 2012-12-28 Switching, distribution and amplification device of low-phase noise frequency standard signal

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103078595A (en) * 2012-12-28 2013-05-01 中国人民解放军63921部队 Low phase noise frequency scale switching, distributing and amplifying equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103078595A (en) * 2012-12-28 2013-05-01 中国人民解放军63921部队 Low phase noise frequency scale switching, distributing and amplifying equipment

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C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130619

Termination date: 20131228