CN203951443U - A kind of novel frequency distribution amplifier - Google Patents
A kind of novel frequency distribution amplifier Download PDFInfo
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- CN203951443U CN203951443U CN201420406892.0U CN201420406892U CN203951443U CN 203951443 U CN203951443 U CN 203951443U CN 201420406892 U CN201420406892 U CN 201420406892U CN 203951443 U CN203951443 U CN 203951443U
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Abstract
The utility model discloses a kind of novel frequency distribution amplifier, comprising: a kind of frequency source signal that input signal is provided, described frequency source signal is by radio frequency connector entering signal detection module and input signal amplification module simultaneously; Described signal demodulator module is also connected with AD sampling module and control module in turn, and control module adopts LPC1752 chip, and described control module is connected with indicating module; The shunt module being connected with input signal amplification module, described shunt module adopts two Yi Fen six road power splitters, described each Yi Fen six road power splitters are all exported six tunnel output signals, the earthing mode of Qie Mei road output signal for by Zero-ohm resistor and casing be connected.The utility model adopts many kinds of measures to isolate output signal, adopts modularization, carries out physical isolation between each module, has guaranteed high-isolation index and low phase noise index between the output signal of the every road of system.
Description
Technical field
The utility model relates to Field of Time and Frequency, is specifically related to a kind of novel frequency distribution amplifier, has low phase noise and high-isolation.
Background technology
Current sciemtifec and technical sphere, Time-Frequency Technology is more and more subject to people's attention, and unified, correct time standard becomes accurate measurement, accurately locates essential condition.
In Field of Time and Frequency, frequency assigning apparatus is being brought into play extremely important effect providing aspect standard time clock benchmark, in traditional time-frequency application, user generally adopts atomic clock as frequency standard signalling, general adopted ripe atomic clock is caesium clock at present, hydrogen clock and rubidium clock, these atomic clocks generally all have expensive, the feature that volume is larger, in the situation that clock reference requested number is a lot, frequency distribution amplifier can address this problem very easily, user can only need an atomic clock as frequency source, frequency of utilization distribution amplifier distributes amplification, multipath clock benchmark just can be provided, meet the demand of multi-clock benchmark.
Clock reference, as a kind of frequency reference, need to possess the feature of low phase noise loss; Therefore require can not worsen and distortion than input signal by the signal quality after frequency distribution amplifier, and must ensure high isolation degree between adjacency channel, just can reduce to disturb between the output signal of each road.Legacy frequencies distribution amplifier cannot ensure low phase noise and the high-isolation index of output signal, in time-frequency growing today, cannot meet scientific and technological needs.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of novel frequency distribution amplifier, one roadbed calibration signal input, 16 roadbed calibration signal outputs can be provided, possess low phase noise index and high-isolation index, and simple in structure, reliability is high, applied range.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of novel frequency distribution amplifier, comprising:
A frequency source signal for input signal is provided, and described frequency source signal is by radio frequency connector entering signal detection module and input signal amplification module simultaneously;
Described signal demodulator module is also connected with AD sampling module and control module in turn, and control module adopts LPC1752 chip, and described control module is connected with indicating module;
One shunt module being connected with input signal amplification module, described shunt module adopts two Yi Fen six road power splitters, described each Yi Fen six road power splitters are all exported six tunnel output signals, the earthing mode of Qie Mei road output signal for by Zero-ohm resistor and casing be connected.
In a preferred embodiment of the present utility model, the signal end of described every road output signal is provided with radome, and Qi Duimei road output signal is carried out space isolation.
In a preferred embodiment of the present utility model, described every road output signal adopts independently dual power supply.
In a preferred embodiment of the present utility model, on the loop of described every road output signal, be provided with and amplify output module and microwave switch;
Selected microwave switch possesses radio-frequency channel and control channel, microwave switch radio-frequency channel is connected with amplification output module, microwave switch control channel is connected with control module, microwave switch control channel comprises chip selection signal and control signal, microwave switch radio-frequency channel conducting when control signal is high, when control signal is low, microwave switch radio-frequency channel is closed, and then controls the break-make of every road signal.
In a preferred embodiment of the present utility model, the chip of described microwave switch is selected HMC849LP4C, and this microwave switch is applied in DC～6GHz frequency band, and maximum Insertion Loss is 0.8dB, and channel isolation is greater than 60dB.
In a preferred embodiment of the present utility model, described amplification output module adopts independently, the operational amplifier of low-voltage noise.
In a preferred embodiment of the present utility model, described every road output signal is signal circuit independently.
By technique scheme, the beneficial effects of the utility model are:
The utility model adopts many kinds of measures to isolate output signal, adopts modularization, carries out physical isolation between each module, has guaranteed high-isolation index and low phase noise index between the output signal of the every road of system.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is theory diagram of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
With reference to Fig. 1, a kind of novel frequency distribution amplifier, comprising: input signal amplification module, signal demodulator module, shunt module, amplification output module, power management module, signal designation module, AD sampling module and control module.
Frequency distribution amplifier receives outside frequency source signal and enters input signal detection module and signal amplification module by radio frequency connector simultaneously.
Signal demodulator module is also connected with AD sampling module and control module in turn, and control module adopts LPC1752 chip, and described control module is connected with indicating module;
Signal demodulator module is for carrying out detection to the peak-to-peak value of frequency source signal, output state by signal demodulator module Jiang Mei road input signal inputs to AD sampling module, the magnitude of voltage collecting is converted to digital signal by AD sampling module, delivers to described control module and judge;
Indicating module is used for showing that whether every road output state is normal, when Dang Mei road output signal is normal, the direct voltage detecting is delivered to AD sampling module by detection module, and the sampled value of described AD sampling module is delivered to control module, and described control module judges that according to the detection value of every road signal whether every road output state is normal, in the time that detection value is greater than 10mV, can assert and have signal output, signal lamp is bright, in the time that detection value is less than 10mV, can judge no signal output, signal lamp goes out.
The first order that input signal amplification module completes input signal receives and amplifies, and uses low-voltage noise, high speed operation amplifier to realize the first order voltage amplification of input signal, and amplifier input voltage noise only
and the setting of first order multiplication factor is slightly high, avoid the too small noise penalty causing of final amplifier input signal; Input signal amplification module can carry out low distortion amplification in the sinusoidal signal of 1MHz～100MHz to frequency range.
Shunt module adopts the Yi Fen six road power splitters of 2 high-isolations to realize, input signal carries out two-way branch, be input to respectively described one point of six power splitter, realize 12 road signal merits and divide output, described shunt module part is owing to having adopted the power splitter of high-isolation, had the isolation of 30dB between the output signal of every road before amplifying along separate routes.
Amplify output module and adopt low-voltage noise, high speed operation amplifier, realize the amplification output of every road output signal, every road output signal adopts independently operational amplifier, and described operational amplifier adopts independent Power supply, to guarantee that signal can not be coupled by power supply;
Adopt novel every ground processing mode, every road output signal possesses separately independently signal circuit, because every road signal has carried out processing isolator, therefore the area of isolation on the Wei Mei road, loop of every road signal, isolation reduction process, the loop of Shi Mei road signal does not intersect, and reduces crosstalking between the signal of Liao Mei road.
The ground of described every road signal by Zero-ohm resistor and casing be connected, ensure that signal can not be coupled by being adjacent to;
Adopt radome isolation method Dui Mei road output signal to carry out space isolation, ensure that signal can not carry out electromagnetic coupled by space, by this special construction and design, can make isolation between passage reach-more than 100dBc, be less than-162dBc of far-end phase noise.
Described power management module completion system Power supply, mainly comprises the power supply of operational amplifier Power supply and control module;
Described operational amplifier all adopts the LDO of low ripple to carry out linear transformation, and every road output signal all adopts independently dual power supply, ensures that the noise of system power supply is less, very effective for the far-end phase noise that reduces output signal.
Amplify amplification and the output of output module for every road signal, adopt the high speed operation amplifier of low-voltage noise to complete, the multiplication factor of final stage output is less, to guarantee the isolation between the signal of every road; The amplifier output of every road is carried out gating by microwave switch, is completed the gating of every road signal by described control module.
Selected microwave switch possesses radio-frequency channel and control channel, microwave switch radio-frequency channel is connected with amplification output module, microwave switch control channel is connected with control module, microwave switch control channel comprises chip selection signal and control signal, microwave switch radio-frequency channel conducting when control signal is high, when control signal is low, microwave switch radio-frequency channel is closed, and then controls the break-make of every road signal.
And the chip of microwave switch is selected HMC849LP4C, this microwave switch is applied in DC～6GHz frequency band, and maximum Insertion Loss is 0.8dB, and channel isolation is greater than 60dB.
Operation principle of the present utility model is:
External input signal is carried out the first amplification by input signal amplification module, and input signal enters two one point of six power splitters and carries out signal along separate routes, makes input signal before amplifying along separate routes, possess the isolation of 30dB.
Amplifying output module amplifies for the output of every road output signal, every road output signal all has described control module to carry out gating by microwave switch, signal demodulator module completes the detection of every road signal, AD adopts module to complete the sampling of every road signal, is completed the instruction of every road signal by described indicating module.
The employing modularized design of this frequency distribution amplifier, carries out physical isolation between each module, guaranteed high-isolation index and low phase noise index between the output signal of the every road of system.
More than show and described general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. a novel frequency distribution amplifier, is characterized in that, comprising:
A frequency source signal for input signal is provided, and described frequency source signal is by radio frequency connector entering signal detection module and input signal amplification module simultaneously;
Described signal demodulator module is also connected with AD sampling module and control module in turn, and control module adopts LPC1752 chip, and described control module is connected with indicating module;
One shunt module being connected with input signal amplification module, described shunt module adopts two Yi Fen six road power splitters, described each Yi Fen six road power splitters are all exported six tunnel output signals, the earthing mode of Qie Mei road output signal for by Zero-ohm resistor and casing be connected.
2. a kind of novel frequency distribution amplifier according to claim 1, is characterized in that, the signal end of described every road output signal is provided with radome, and Qi Duimei road output signal is carried out space isolation.
3. a kind of novel frequency distribution amplifier according to claim 1, is characterized in that, described every road output signal adopts independently dual power supply.
4. a kind of novel frequency distribution amplifier according to claim 1, is characterized in that, is provided with and amplifies output module and microwave switch on the loop of described every road output signal;
Selected microwave switch possesses radio-frequency channel and control channel, microwave switch radio-frequency channel is connected with amplification output module, microwave switch control channel is connected with control module, microwave switch control channel comprises chip selection signal and control signal, microwave switch radio-frequency channel conducting when control signal is high, when control signal is low, microwave switch radio-frequency channel is closed, and then controls the break-make of every road signal.
5. a kind of novel frequency distribution amplifier according to claim 4, is characterized in that the chip of microwave switch is selected HMC849LP4C, and this microwave switch is applied in DC～6GHz frequency band, and maximum Insertion Loss is 0.8dB, and channel isolation is greater than 60dB.
6. a kind of novel frequency distribution amplifier according to claim 4, is characterized in that, described amplification output module adopts independently, the operational amplifier of low-voltage noise.
7. a kind of novel frequency distribution amplifier according to claim 1, is characterized in that, described every road output signal is signal circuit independently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420406892.0U CN203951443U (en) | 2014-07-22 | 2014-07-22 | A kind of novel frequency distribution amplifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420406892.0U CN203951443U (en) | 2014-07-22 | 2014-07-22 | A kind of novel frequency distribution amplifier |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116455A (en) * | 2015-09-24 | 2015-12-02 | 长春市泽安科技有限公司 | Detector for composite metals and non-linear nodes |
| CN108712167A (en) * | 2018-05-24 | 2018-10-26 | 南京熊猫电子股份有限公司 | A kind of mark frequency distribution module with adaptive frequency-selecting characteristic |
| CN109508477A (en) * | 2018-10-09 | 2019-03-22 | 南京沁智电子科技有限公司 | It mutually makes an uproar under a kind of vibration environment and deteriorates low clock distribution block |
-
2014
- 2014-07-22 CN CN201420406892.0U patent/CN203951443U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116455A (en) * | 2015-09-24 | 2015-12-02 | 长春市泽安科技有限公司 | Detector for composite metals and non-linear nodes |
| CN108712167A (en) * | 2018-05-24 | 2018-10-26 | 南京熊猫电子股份有限公司 | A kind of mark frequency distribution module with adaptive frequency-selecting characteristic |
| CN108712167B (en) * | 2018-05-24 | 2021-11-23 | 南京熊猫电子股份有限公司 | Standard frequency distribution module with self-adaptive frequency selection characteristic |
| CN109508477A (en) * | 2018-10-09 | 2019-03-22 | 南京沁智电子科技有限公司 | It mutually makes an uproar under a kind of vibration environment and deteriorates low clock distribution block |
| CN109508477B (en) * | 2018-10-09 | 2023-08-18 | 南京沁智电子科技有限公司 | Clock distribution module with low phase noise degradation in vibration environment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20190722 |