CN204156818U - Improved low-noise amplifier - Google Patents
Improved low-noise amplifier Download PDFInfo
- Publication number
- CN204156818U CN204156818U CN201420569365.1U CN201420569365U CN204156818U CN 204156818 U CN204156818 U CN 204156818U CN 201420569365 U CN201420569365 U CN 201420569365U CN 204156818 U CN204156818 U CN 204156818U
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- China
- Prior art keywords
- noise amplifier
- low noise
- attenuator
- isolator
- microprocessor
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Abstract
The utility model discloses improved low-noise amplifier, comprise lightning arrester, input isolator, prime low noise amplifier, secondary low noise amplifier, SAW (Surface Acoustic Wave) filter, three grades of low noise amplifiers, level Four low noise amplifier, wave detector, microprocessor and output isolators, described input isolator, prime low noise amplifier, secondary low noise amplifier, SAW (Surface Acoustic Wave) filter are connected successively with three grades of low noise amplifiers; Go back tie geophone between described level Four low noise amplifier and output isolator, wave detector is connected with microprocessor, and microprocessor also connects the first attenuator and the second attenuator.The utility model is by above-mentioned principle, and band lightning function, even if also not fragile at outside work, can detect power output simultaneously, can better realize regulating input signal gain, Automatic level control.
Description
Technical field
The utility model relates to amplifier region, is specifically related to improved low-noise amplifier.
Background technology
The product that mobile communication technology is modern communication technology and computer technology high development and be combined with each other.Along with the extensive use of digital information technique, modern communication technology is just with unprecedented high speed development, and mobile communication is also just along the future development of multiple access communication.CDMA (code division multiple access) compares with TDMA (time division multiple access) with FDMA (frequency division multiple access), has the large and flexible configuration of power system capacity, the availability of frequency spectrum is high, soft handover, security performance are good advantage.Be widely used based on these advantage CDMA technology.The Main Function of low noise amplifier is the small-signal that amplifying antenna receives from air interface, reduces noise jamming, recalls required information data for For Solutions of Systems.Low noise amplifier determines the noise factor of receiver, is the key position of high sensitive receiver in the field such as satellite communication, radar communication, by the amplifier of ultra-low noise, thus improves the sensitivity of receiver.Existing back noise amplifier, when outside work, is easily subject to the impact of thunder and lightning and damages, being unfavorable for receiving data information, and existing low noise amplifier cannot detect power output simultaneously, is unfavorable for the adjustment in later stage.
Utility model content
The utility model overcomes the deficiencies in the prior art, provides improved low-noise amplifier, this apparatus, with lightning function, even if not fragile at outside work yet, can power output be detected simultaneously, can better realize regulating input signal gain, Automatic level control.
For solving above-mentioned technical problem, the utility model is by the following technical solutions: improved low-noise amplifier, comprise lightning arrester, input isolator, prime low noise amplifier, secondary low noise amplifier, SAW (Surface Acoustic Wave) filter, three grades of low noise amplifiers, level Four low noise amplifier, wave detector, microprocessor and output isolators, described input isolator, prime low noise amplifier, secondary low noise amplifier, SAW (Surface Acoustic Wave) filter are connected successively with three grades of low noise amplifiers, and input signal is inputted by input isolator; Described level Four low noise amplifier is connected successively with output isolator, exports isolator output signal, between three grades of low noise amplifiers and level Four low noise amplifier, also connects the first attenuator and the second attenuator successively; Described prime low noise amplifier is all connected lightning arrester with on secondary low noise amplifier, the equal ground connection of lightning arrester; Go back tie geophone between described level Four low noise amplifier and output isolator, wave detector is connected with microprocessor, and microprocessor also connects the first attenuator and the second attenuator.
Input arranges input isolator, arranges output isolator at output signal end, can obtain good input and output standing-wave ratio.The setting of SAW (Surface Acoustic Wave) filter, the various spurious signals outside inhibition zone, improve low noise amplifier Out-of-band rejection performance, can filter steeper filter bag, frequency selectivity is better.Prime low noise amplifier and secondary low noise amplifier all arrange lightning arrester, when this amplifier is arranged on outdoor, when amplifying antenna is from aerial reception small-signal, avoids thunder and lightning weather to the damage of amplifier, better transmission of information.At the output also tie geophone of level Four low noise amplifier, realize power output and detect, then pass to microprocessor, information feed back is given the first attenuator and the second attenuator by microprocessor again, better realizes the adjustment of gain and the control of level.
Described first attenuator is numerical-control attenuator, and the second attenuator is sub-controlling attenuation device.An adjustable gain joint achieving input signal above, after the control achieving power output.
The model of described microprocessor is MSP430.The operation principle of this processor and the course of work are all same as the prior art, and 16 low-power scms that MSP430 series monolithic is a kind of super low-power consumption, functional integration is higher, are specially adapted to require occasion low in energy consumption.
Described lightning arrester model is DXH06-FA.This kind of lightning arrester modularization is installed, and long service life, without leaky, coefficient of safety is high.
Compared with prior art, the beneficial effects of the utility model are:
1, the setting of SAW (Surface Acoustic Wave) filter, the various spurious signals outside inhibition zone, improve low noise amplifier Out-of-band rejection performance, can filter steeper filter bag, frequency selectivity is better.
2, the setting of lightning arrester, can avoid thunder and lightning weather to the damage of amplifier at the receiving terminal of signal, even if also can work preferably in outdoor, and better transmission of information.
3, at the output also tie geophone of level Four low noise amplifier, realize power output to detect, then pass to microprocessor, information feed back is given the first attenuator and the second attenuator by microprocessor again, better realizes the adjustment of gain and the control of level.
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 fig. 1, the utility model comprises improved low-noise amplifier, comprise lightning arrester, input isolator, prime low noise amplifier, secondary low noise amplifier, SAW (Surface Acoustic Wave) filter, three grades of low noise amplifiers, level Four low noise amplifier, wave detector, microprocessor and output isolators, described input isolator, prime low noise amplifier, secondary low noise amplifier, SAW (Surface Acoustic Wave) filter are connected successively with three grades of low noise amplifiers, and input signal is inputted by input isolator; Described level Four low noise amplifier is connected successively with output isolator, exports isolator output signal, between three grades of low noise amplifiers and level Four low noise amplifier, also connects the first attenuator and the second attenuator successively; Described prime low noise amplifier is all connected lightning arrester with on secondary low noise amplifier, the equal ground connection of lightning arrester; Go back tie geophone between described level Four low noise amplifier and output isolator, wave detector is connected with microprocessor, and microprocessor also connects the first attenuator and the second attenuator.
First, input signal first realizes good input vswr performance by input isolator; Then then input signal amplifies through prime low noise amplifier, secondary low noise amplifier two-stage, then through SAW (Surface Acoustic Wave) filter, out of band signal is suppressed, again through three grades of low noise amplifiers through the third level amplify after, through realizing the numerical-control attenuator of adjustable gain joint, through realizing auto level control voltage-controlled attenuator, the fourth stage again through level Four low noise amplifier amplifies, realize power output with time-division part energy to wave detector to detect, main signal exports finally by output isolator.Input arranges input isolator, arranges output isolator at output signal end, can obtain good input and output standing-wave ratio.The setting of SAW (Surface Acoustic Wave) filter, the various spurious signals outside inhibition zone, improve low noise amplifier Out-of-band rejection performance, can filter steeper filter bag, frequency selectivity is better.Prime low noise amplifier and secondary low noise amplifier all arrange lightning arrester, when this amplifier is arranged on outdoor, when amplifying antenna is from aerial reception small-signal, avoids thunder and lightning weather to the damage of amplifier, better transmission of information.At the output also tie geophone of level Four low noise amplifier, realize power output and detect, then pass to microprocessor, information feed back is given the first attenuator and the second attenuator by microprocessor again, better realizes the adjustment of gain and the control of level.
Embodiment 2:
The present embodiment preferred concrete structure on the basis of embodiment 1 is as follows: described first attenuator is numerical-control attenuator, and the second attenuator is sub-controlling attenuation device.The former achieves the adjustable gain joint of input signal.The latter achieves the automatic control of power output.
The model of described microprocessor is MSP430.The operation principle of this processor and the course of work are all same as the prior art, and 16 low-power scms that MSP430 series monolithic is a kind of super low-power consumption, functional integration is higher, are specially adapted to require occasion low in energy consumption.
Described lightning arrester model is DXH06-FA.This kind of lightning arrester modularization is installed, and long service life, without leaky, coefficient of safety is high.
Just this utility model can be realized as mentioned above.
Claims (4)
1. improved low-noise amplifier, it is characterized in that: comprise lightning arrester, input isolator, prime low noise amplifier, secondary low noise amplifier, SAW (Surface Acoustic Wave) filter, three grades of low noise amplifiers, level Four low noise amplifier, wave detector, microprocessor and output isolators, described input isolator, prime low noise amplifier, secondary low noise amplifier, SAW (Surface Acoustic Wave) filter are connected successively with three grades of low noise amplifiers, and input signal is inputted by input isolator; Described level Four low noise amplifier is connected successively with output isolator, exports isolator output signal, between three grades of low noise amplifiers and level Four low noise amplifier, also connects the first attenuator and the second attenuator successively; Described prime low noise amplifier is all connected lightning arrester with on secondary low noise amplifier, the equal ground connection of lightning arrester; Go back tie geophone between described level Four low noise amplifier and output isolator, wave detector is connected with microprocessor, and microprocessor also connects the first attenuator and the second attenuator.
2. improved low-noise amplifier according to claim 1, is characterized in that: described first attenuator is numerical-control attenuator, and the second attenuator is sub-controlling attenuation device.
3. improved low-noise amplifier according to claim 1, is characterized in that: the model of described microprocessor is MSP430.
4. improved low-noise amplifier according to claim 1, is characterized in that: described lightning arrester model is DXH06-FA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420569365.1U CN204156818U (en) | 2014-09-30 | 2014-09-30 | Improved low-noise amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420569365.1U CN204156818U (en) | 2014-09-30 | 2014-09-30 | Improved low-noise amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204156818U true CN204156818U (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420569365.1U Expired - Fee Related CN204156818U (en) | 2014-09-30 | 2014-09-30 | Improved low-noise amplifier |
Country Status (1)
| Country | Link |
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| CN (1) | CN204156818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320090A (en) * | 2014-09-30 | 2015-01-28 | 绵阳雷迪创微电子科技有限公司 | Improved structure of low-noise amplifier |
-
2014
- 2014-09-30 CN CN201420569365.1U patent/CN204156818U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320090A (en) * | 2014-09-30 | 2015-01-28 | 绵阳雷迪创微电子科技有限公司 | Improved structure of low-noise amplifier |
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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: 20161228 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20180930 |