CN204425324U - A kind of video receiver - Google Patents
A kind of video receiver Download PDFInfo
- Publication number
- CN204425324U CN204425324U CN201520130652.7U CN201520130652U CN204425324U CN 204425324 U CN204425324 U CN 204425324U CN 201520130652 U CN201520130652 U CN 201520130652U CN 204425324 U CN204425324 U CN 204425324U
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- CN
- China
- Prior art keywords
- signal
- amplifier
- video receiver
- intermediate frequency
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Noise Elimination (AREA)
- Amplifiers (AREA)
Abstract
The utility model relates to a kind of communicator, more specifically to one signal receiver frequently, comprise antenna, filter, power supply, amplifier block, radio freqnency transformer, analog to digital converter and microprocessor, can elimination receive clutter, thus improve the reception accuracy of signal, and the distortion in signals transmission and blocking can be prevented, improve the sensitivity received.Antenna is used for received RF signal.Filter radio frequency signal carries out process and elimination clutter.Amplifier block is used for radio frequency signal to carry out amplifying and radiofrequency signal being converted to intermediate-freuqncy signal.Intermediate frequency transformer is used for carrying out frequency-selecting to signal, filters out unwanted clutter.Analog to digital converter is used for analog signal being converted to digital signal for microprocessor identification.Microprocessor is responsible for reception and the conversion of signal.
Description
Technical field
The utility model relates to a kind of communicator, more specifically to a kind of video receiver.
Background technology
Receiver Module is positioned at radio communication foremost, and its performance and structure directly affect the quality communicated.The receiving terminal of radiofrequency signal is receiver, and signal, in transmitting procedure, can be interfered and infiltrate clutter, and at receiver Received signal strength and to signal processing in also may there is signal blockage situation.
Summary of the invention
The technical problem that the utility model mainly solves is: provide a kind of video receiver, can the clutter that receives of elimination, thus improves the reception accuracy of signal, and can prevent the distortion in signals transmission and blocking, improves the sensitivity received.
For solving the problems of the technologies described above, the utility model relates to a kind of communicator, more specifically to one signal receiver frequently, comprise antenna, filter, power supply, amplifier block, radio freqnency transformer, analog to digital converter and microprocessor, can elimination receive clutter, thus improve the reception accuracy of signal, and the distortion in signals transmission and blocking can be prevented, improve the sensitivity received.
Antenna is used for received RF signal.Filter radio frequency signal carries out process and elimination clutter.Amplifier block is used for radio frequency signal to carry out amplifying and radiofrequency signal being converted to intermediate-freuqncy signal.Intermediate frequency transformer is used for carrying out frequency-selecting to signal, filters out unwanted clutter.Analog to digital converter is used for analog signal being converted to digital signal for microprocessor identification.Microprocessor is responsible for reception and the conversion of signal.
As the further optimization of this programme, the amplifier block described in a kind of video receiver of the utility model is made up of isolator I, first stage amplifier, two-stage amplifier, diode electrically-tuned attenuator, third stage amplifier, isolator II and intermediate frequency amplifier.
As the further optimization of this programme, the input of isolator I described in a kind of video receiver of the utility model is connected with the output of filter, send as isolation voltage signal for being become by the voltage signal after filtration.
As the further optimization of this programme, first stage amplifier, two-stage amplifier and third stage amplifier described in a kind of video receiver of the utility model are used for carrying out amplification process to voltage signal.
As the further optimization of this programme, diode electrically-tuned attenuator described in a kind of video receiver of the utility model is connected with power supply, under the AC signal control that power supply provides, for voltage level being maintained a magnitude, prevent distortion and the blocking of voltage signal.
As the further optimization of this programme, the input of the isolator II described in a kind of video receiver of the utility model is connected with third stage amplifier, output is connected with intermediate frequency amplifier, for radio frequency voltage signal and voltage intermediate frequency signal being isolated, and voltage intermediate frequency signal is transferred to intermediate frequency amplifier.
As the further optimization of this programme, the intermediate frequency amplifier described in a kind of video receiver of the utility model is used for being amplified by the voltage signal of medium frequency and transferring to next stage.
The beneficial effect of a kind of video receiver of the utility model is:
A. a kind of video receiver of the utility model can receive by radio frequency signal;
B. the signal receiving sensitivity of a kind of video receiver of the utility model is higher.
Accompanying drawing explanation
Fig. 1 is the system block diagram of a kind of video receiver of the utility model.
Embodiment
In FIG, the utility model relates to a kind of communicator, more specifically to a kind of video receiver, comprise antenna, filter, power supply, amplifier block, radio freqnency transformer, analog to digital converter and microprocessor, can elimination receive clutter, thus improve the reception accuracy of signal, and the distortion in signals transmission and blocking can be prevented, improve the sensitivity received.
Antenna can received RF signal.Filter radio frequency signal carries out process and elimination clutter.Antenna can improve the range of receiving of receiver, and can receive the frequency electromagnetic waves transmitted, i.e. radiofrequency signal.Radiofrequency signal can be subject to the interference from various magnetic field and be mixed into clutter in long-distance transmissions process, make the signal that receives more assorted, and filter can filter out unnecessary clutter, improves the receiving efficiency of receiver.
Amplifier block can carry out amplifying and radiofrequency signal being converted to intermediate-freuqncy signal by radio frequency signal.Amplifier block is made up of isolator I, first stage amplifier, two-stage amplifier, diode electrically-tuned attenuator, third stage amplifier, isolator II and intermediate frequency amplifier.The input of isolator I is connected with the output of filter, the voltage signal after filtration can be become and send as isolation voltage signal.Filter wraps up by isolator, carries out Magnetic isolation to filter, prevents filter to be interfered, thus increases the filtering performance of filter.First stage amplifier, two-stage amplifier and third stage amplifier can carry out amplification process to voltage signal.Voltage signal, after first stage amplifier and two-stage amplifier carry out multistage amplification, improves the intensity of voltage signal, is convenient to the transmission of voltage signal.Diode electrically-tuned attenuator is connected with power supply, and power supply provides current controling signal for diode attenuator.When diode electrically-tuned attenuator diode two ends in the change of AC signal that power supply provides time, diode output power changes thereupon, make to be decayed by the voltage signal of diode, voltage level can be maintained a rational magnitude, prevent distortion and the blocking of voltage signal.The input of isolator II is connected with third stage amplifier, and output is connected with intermediate frequency amplifier, radio frequency voltage signal and voltage intermediate frequency signal can be isolated, and voltage intermediate frequency signal is transferred to intermediate frequency amplifier.Intermediate frequency amplifier the voltage signal of just medium frequency can amplify and transfer to next stage.
Intermediate frequency transformer can carry out frequency-selecting to signal, filters out unwanted clutter.Analog signal can be converted to digital signal for microprocessor identification by intermediate frequency transformer and analog to digital converter.Microprocessor is responsible for reception and the conversion of signal.
Certain above-mentioned explanation is not limitation of the utility model; the utility model is also not limited only to above-mentioned citing; the change that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also belong to protection range of the present utility model.
Claims (7)
1. a video receiver, comprises antenna, filter, power supply, amplifier block, radio freqnency transformer, analog to digital converter and microprocessor, it is characterized in that: antenna can received RF signal; Filter radio frequency signal carries out process and elimination clutter; Amplifier block can carry out amplifying and radiofrequency signal being converted to intermediate-freuqncy signal by radio frequency signal; Intermediate frequency transformer can carry out frequency-selecting to signal, filters out unwanted clutter; Analog signal can be converted to digital signal for microprocessor identification by analog to digital converter; Microprocessor is responsible for reception and the conversion of signal.
2. a kind of video receiver according to claim 1, is characterized in that: described amplifier block is made up of isolator I, first stage amplifier, two-stage amplifier, diode electrically-tuned attenuator, third stage amplifier, isolator II and intermediate frequency amplifier.
3. a kind of video receiver according to claim 1 and 2, is characterized in that: the described input of isolator I is connected with the output of filter, send as isolation voltage signal for being become by the voltage signal after filtration.
4. a kind of video receiver according to claim 1 and 2, is characterized in that: described first stage amplifier, two-stage amplifier and third stage amplifier are used for carrying out amplification process to voltage signal.
5. a kind of video receiver according to claim 1 and 2, it is characterized in that: described diode electrically-tuned attenuator is connected with power supply, under the AC signal control that power supply provides, for voltage level being maintained a magnitude, prevent distortion and the blocking of voltage signal.
6. a kind of video receiver according to claim 1 and 2, it is characterized in that: the input of described isolator II is connected with third stage amplifier, output is connected with intermediate frequency amplifier, for radio frequency voltage signal and voltage intermediate frequency signal being isolated, and voltage intermediate frequency signal is transferred to intermediate frequency amplifier.
7. a kind of video receiver according to claim 1 and 2, is characterized in that: described intermediate frequency amplifier is used for being amplified by the voltage signal of medium frequency and transferring to next stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520130652.7U CN204425324U (en) | 2015-03-07 | 2015-03-07 | A kind of video receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520130652.7U CN204425324U (en) | 2015-03-07 | 2015-03-07 | A kind of video receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204425324U true CN204425324U (en) | 2015-06-24 |
Family
ID=53475652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520130652.7U Expired - Fee Related CN204425324U (en) | 2015-03-07 | 2015-03-07 | A kind of video receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204425324U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788426A (en) * | 2016-11-28 | 2017-05-31 | 中国科学院武汉物理与数学研究所 | A kind of CPT atomic frequency standard laser frequency modulation index locking device and method |
| CN108141271A (en) * | 2015-10-14 | 2018-06-08 | 法国大陆汽车公司 | Phase diversity type radio-frequency transmitter |
-
2015
- 2015-03-07 CN CN201520130652.7U patent/CN204425324U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108141271A (en) * | 2015-10-14 | 2018-06-08 | 法国大陆汽车公司 | Phase diversity type radio-frequency transmitter |
| CN108141271B (en) * | 2015-10-14 | 2021-06-29 | 法国大陆汽车公司 | Phase diversity radio frequency receiver |
| CN106788426A (en) * | 2016-11-28 | 2017-05-31 | 中国科学院武汉物理与数学研究所 | A kind of CPT atomic frequency standard laser frequency modulation index locking device and method |
| CN106788426B (en) * | 2016-11-28 | 2019-10-15 | 中国科学院武汉物理与数学研究所 | A kind of CPT atomic frequency standard laser frequency modulation index locking device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20160307 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |