CN204156815U - Low-converter - Google Patents
Low-converter Download PDFInfo
- Publication number
- CN204156815U CN204156815U CN201420600191.0U CN201420600191U CN204156815U CN 204156815 U CN204156815 U CN 204156815U CN 201420600191 U CN201420600191 U CN 201420600191U CN 204156815 U CN204156815 U CN 204156815U
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- Prior art keywords
- amplifier
- low
- frequency
- frequency mixer
- converter
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Abstract
The utility model discloses low-converter, comprise the passive filter, pre-amplifier, prime frequency mixer, filter, two-stage amplifier, frequency mixer and the final amplifier that connect successively, described prime frequency mixer also connects level Four amplifier and temperature sensor simultaneously, level Four amplifier is gone back rate of connections synthesizer, and frequency synthesizer is also connected with power splitter; Described frequency mixer also connects temperature sensor and third stage amplifier, and third stage amplifier is also connected with phase locking unit, and phase locking unit is also connected with power splitter.The utility model is by above-mentioned principle, stable local vibration source can be provided for down-conversion passage, make the control that low-converter can well realize supply frequency, reach stability contorting alternating current machine rotating speed, temperature variations for monitoring vitals in low-converter is also set simultaneously, in time it is lowered the temperature, improve the reliability of device, extend the useful life of device.
Description
Technical field
The utility model relates to frequency converter field, is specifically related to low-converter.
Background technology
In recent years, along with the fast development of microwave device, in radar and the communications field, receiving system generally have employed low noise amplifier as prime, greatly reduces system noise factor, improves sensitivity.The influence and effect fact of frequency mixer to receiving system is really not so.For single-sideband system, the single-sideband system that particularly intermediate frequency is lower, radial noise can bring very large impact to noise.Therefore wider at low noise amplifier frequency band and in the single-sideband system that intermediate frequency is not high, still need to use frequency mixer, and also comprise low-converter in frequency mixer.The low-converter that now uses cannot provide stable local vibration source for down-conversion passage, makes low-converter well can not change supply frequency, reaches the object of stability contorting alternating current machine rotating speed.Frequency converter will produce certain power consumption as a kind of current transformer in running.Owing to using device different, control mode is different, and different brands, the power consumption that the frequency converter of different size produces also is not quite similar.And the reliability of frequency converter and temperature are inverse ratio, therefore how to realize the heat radiation to frequency converter, reduce temperature rise, improve the reliability of device, thus the useful life of extension device, seem particular importance.
Utility model content
The utility model overcomes the deficiencies in the prior art, low-converter is provided, stable local vibration source can be provided for down-conversion passage, make the control that low-converter can well realize supply frequency, reach stability contorting alternating current machine rotating speed, the temperature variations for monitoring vitals in low-converter being also set simultaneously, in time it being lowered the temperature, improve the reliability of device, extend the useful life of device.
For solving above-mentioned technical problem, the utility model is by the following technical solutions: low-converter, comprise the passive filter, pre-amplifier, prime frequency mixer, filter, two-stage amplifier, frequency mixer and the final amplifier that connect successively, described prime frequency mixer also connects level Four amplifier and temperature sensor simultaneously, level Four amplifier is gone back rate of connections synthesizer, and frequency synthesizer is also connected with power splitter; The frequency mixer that described two-stage amplifier rear directly connects also connects temperature sensor and third stage amplifier, and third stage amplifier is also connected with phase locking unit, and phase locking unit is also connected with power splitter.
This low-converter uses prime frequency mixer and these two frequency mixers of frequency mixer to realize down-conversion by secondary mixing.Frequency synthesizer and local vibration source can provide stable signal for down-conversion passage, stabilization signal encourages generation one band frequency signal f1-f2 at frequency synthesizer through power splitter DDS, and the stabilization signal that local vibration source produces produces through power splitter DDS excitation and through the phase locking frequency multiplying of phase locking unit the point frequency secondary local oscillation signal that frequency is L1.The downstream signal frequencies inputted from passive filter is f3-f4, the mixing that this signal realizes outputing signal with mixing synthesizer f1-f2 by prime frequency mixer produces the fixed intermediate frequency signal that frequency is L2, this intermediate-freuqncy signal and two local oscillation frequency signal L1 produce the intermediate-freuqncy signal of standard by the mixing of frequency mixer, then export.This device can provide stable local vibration source for down-conversion passage, makes the control that low-converter can well realize supply frequency, reaches stability contorting alternating current machine rotating speed.On the critical piece prime frequency mixer and frequency mixer of this device, go back set temperature transducer simultaneously, realize the detection of temperature, once it is too high to find that temperature raises, in time it is lowered the temperature, ensure its normal effective work, improve the reliability of device, extend the useful life of device.
Described power splitter also connects the local vibration source that 10MHz signal is provided.The local vibration source of this signal can meet frequency synthesizer power output and the signal of coming from passive filter produce 720MHz intermediate-freuqncy signal by mixing, and the signal making last output is intermediate-freuqncy signal.
Described passive filter is LC type passive filter.Before low-converter, install LC type passive filter additional, filter high order harmonic component, suppress interference source, avoid higher harmonic wave that the leakage current of frequency converter output cable is increased, the situation of motor-output deficiency is occurred, improve the reliability of device.
Described passive filter is also connected with input signal.
Described final amplifier is also connected with output signal.
Described temperature sensor is water proof type temperature sensor.Avoid being subject to moisture effects and having influence on useful life.
Compared with prior art, the beneficial effects of the utility model are:
1, this device can provide stable local vibration source for down-conversion passage, makes the control that low-converter can well realize supply frequency, reaches stability contorting alternating current machine rotating speed; On the critical piece prime frequency mixer and frequency mixer of this device, go back set temperature transducer simultaneously, realize the detection of temperature, once it is too high to find that temperature raises, in time it is lowered the temperature, ensure its normal effective work, improve the reliability of device, extend the useful life of device.
2, passive filter is LC type passive filter, installs LC type passive filter additional, filter high order harmonic component before low-converter, suppress interference source, avoid higher harmonic wave that the leakage current of frequency converter output cable is increased, the situation of motor-output deficiency is occurred, improve the reliability of device.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Embodiment
Be further elaborated the utility model below in conjunction with accompanying drawing, embodiment of the present utility model is not limited thereto.
Embodiment 1:
As shown in Figure 1, the utility model comprises the passive filter, pre-amplifier, prime frequency mixer, filter, two-stage amplifier, frequency mixer and the final amplifier that connect successively, described prime frequency mixer also connects level Four amplifier and temperature sensor simultaneously, level Four amplifier is gone back rate of connections synthesizer, and frequency synthesizer is also connected with power splitter; Described frequency mixer also connects temperature sensor and third stage amplifier, and third stage amplifier is also connected with phase locking unit, and phase locking unit is also connected with power splitter.
This low-converter uses prime frequency mixer and these two frequency mixers of frequency mixer to realize down-conversion by secondary mixing.Frequency synthesizer and local vibration source can provide stable signal for down-conversion passage, stabilization signal encourages generation one band frequency signal f1-f2 at frequency synthesizer through power splitter DDS, and the stabilization signal that local vibration source produces produces through power splitter DDS excitation and through the phase locking frequency multiplying of phase locking unit the point frequency secondary local oscillation signal that frequency is L1.The downstream signal frequencies inputted from passive filter is f3-f4, the mixing that this signal realizes outputing signal with mixing synthesizer f1-f2 by prime frequency mixer produces the fixed intermediate frequency signal that frequency is L2, this intermediate-freuqncy signal and two local oscillation frequency signal L1 produce the intermediate-freuqncy signal of standard by the mixing of frequency mixer, then export.This device can provide stable local vibration source for down-conversion passage, makes the control that low-converter can well realize supply frequency, reaches stability contorting alternating current machine rotating speed.Passive filter wherein realizes carrying out Frequency mixing processing to passing to prime frequency mixer after input signal filter and amplification again, by the frequency signal after the mixing of prime frequency mixer in the filtering again of device after filtering with pass to frequency mixer after amplifying and carry out secondary mixing, signal transacting better effects if.On the critical piece prime frequency mixer and frequency mixer of this device, go back set temperature transducer simultaneously, realize the detection of temperature, once it is too high to find that temperature raises, in time it is lowered the temperature, ensure its normal effective work, improve the reliability of device, extend the useful life of device.
Embodiment 2:
The present embodiment preferred concrete structure on the basis of above-described embodiment is as follows: power splitter also connects the local vibration source providing 10MHz signal.
Described passive filter is LC type passive filter.Before low-converter, install LC type passive filter additional, filter high order harmonic component, suppress interference source, avoid higher harmonic wave that the leakage current of frequency converter output cable is increased, the situation of motor-output deficiency is occurred, improve the reliability of device.
Described passive filter is also connected with input signal.
Described final amplifier is also connected with output signal.
Described temperature sensor is water proof type temperature sensor.
Just this utility model can be realized as mentioned above.
Claims (6)
1. low-converter, it is characterized in that: comprise the passive filter, pre-amplifier, prime frequency mixer, filter, two-stage amplifier, frequency mixer and the final amplifier that connect successively, described prime frequency mixer also connects level Four amplifier and temperature sensor simultaneously, level Four amplifier is gone back rate of connections synthesizer, and frequency synthesizer is also connected with power splitter; The frequency mixer that described two-stage amplifier rear directly connects also connects temperature sensor and third stage amplifier, and third stage amplifier is also connected with phase locking unit, and phase locking unit is also connected with power splitter.
2. low-converter according to claim 1, is characterized in that: described power splitter also connects the local vibration source providing 10MHz signal.
3. low-converter according to claim 1, is characterized in that: described passive filter is LC type passive filter.
4. low-converter according to claim 1, is characterized in that: described passive filter is also connected with input signal.
5. low-converter according to claim 1, is characterized in that: described final amplifier is also connected with output signal.
6. low-converter according to claim 1, is characterized in that: described temperature sensor is water proof type temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420600191.0U CN204156815U (en) | 2014-10-17 | 2014-10-17 | Low-converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420600191.0U CN204156815U (en) | 2014-10-17 | 2014-10-17 | Low-converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204156815U true CN204156815U (en) | 2015-02-11 |
Family
ID=52514902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420600191.0U Expired - Fee Related CN204156815U (en) | 2014-10-17 | 2014-10-17 | Low-converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204156815U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467682A (en) * | 2014-10-17 | 2015-03-25 | 绵阳雷迪创微电子科技有限公司 | Down converter capable of achieving temperature detection |
| CN108768424A (en) * | 2018-06-06 | 2018-11-06 | 武汉博畅通信设备有限责任公司 | A kind of New Anti-interference broadband receiver |
-
2014
- 2014-10-17 CN CN201420600191.0U patent/CN204156815U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467682A (en) * | 2014-10-17 | 2015-03-25 | 绵阳雷迪创微电子科技有限公司 | Down converter capable of achieving temperature detection |
| CN108768424A (en) * | 2018-06-06 | 2018-11-06 | 武汉博畅通信设备有限责任公司 | A kind of New Anti-interference broadband receiver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170105 Address after: 610000 Sichuan City, Chengdu province high tech Zone, Xiaojiahe is the number of street, building 11, building 1, building 2 Patentee after: CHENGDU XIANTONG SCIENCE & TECHNOLOGY CO., LTD. Address before: 621000 Mianyang city of Sichuan Province Science Park Innovation Service Center Patentee before: MIANYANG LEIDICHUANG MICROELECTRONICS CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20181017 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |