CN204948069U - A kind of PDT Digital Clustering radio frequency spread subscriber device - Google Patents
A kind of PDT Digital Clustering radio frequency spread subscriber device Download PDFInfo
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- CN204948069U CN204948069U CN201520636259.5U CN201520636259U CN204948069U CN 204948069 U CN204948069 U CN 204948069U CN 201520636259 U CN201520636259 U CN 201520636259U CN 204948069 U CN204948069 U CN 204948069U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The utility model relates to communication system, a kind of PDT Digital Clustering radio frequency spread subscriber device is provided, comprise power supply, monitoring unit, Modem, ICS echo is from disappearing unit, retransmitting antenna, donor antenna, first duplexer, second duplexer, up link and down link, described up link comprises the up LNA module connected successively, low-converter, intermediate frequency filtering module, upconverter, up Doherty power amplifier, described down link comprises the descending LNA module connected successively, low-converter, intermediate frequency filtering module, upconverter and descending Doherty power amplifier, described ICS echo to be connected with the intermediate frequency filtering module of up link and down link the multi-path jamming produced for eliminating the feedback interference and external environment condition that produce between retransmitting antenna and donor antenna and object respectively from the unit that disappears.
Description
Technical field
The utility model relates to communication system, particularly a kind of PDT Digital Clustering radio frequency spread subscriber device.
Background technology
PDT (PoliceDigitalTrunking: police digital cluster system) digital cluster communication standard is the police Digital Clustering standard of one that scientific and technological information office of the Ministry of Public Security issued on April 20th, 2010, this standard is formulated by scientific and technological information office of the Ministry of Public Security, the cluster digital technology that domestic specialized mobile radio manufacturer participates in jointly, this standard has taken into full account China's actual conditions, reference and innovative design have been carried out to the standard technique of international mature, merge the specialized communication experience of distinct Chinese characteristics, be a set of completely newly, the advanced digital communication standard with Chinese independent intellectual property right.This standard adopts 12.5kHzTDMA time division multiple access way, 4FSK modulates, great Qu system covers, digital speech coding and chnnel coding, has lamprophonia, spectral efficient, communication distance is far away, antijamming capability is strong, power saving, modulus are compatible and the speech business functional characteristics enriched; Possess networking capability and digital encryption ability flexibly.The system equipment of the Digital Clustering standard released during this period meets the rule of development of current market.The radio communication command scheduling demand of the professional user colonies such as public safety, public utilities, industry and commerce can be met.
Due to the characteristic of ground PDT digital packet terminal hand platform application aspect, in built-up metropolis, originally the pattern of the machine-processed whole service area of PDT Digital Clustering base station great Qu covering is difficult to the construction of applicable ground PDT digital colony network.Some important places are as local in administrative department of public security, conference and exhibition center, market place builet below the ground etc. may because the overweight cluster signal that causes of propagation loss be relatively weak, and cluster intercom cannot smooth and easyly use in these regions.The great Qu quorum sensing inhibitor network depending the formation of high-power base station alone certainly leads to signal blind zone and weak district; And blind area and weak district make, and quorum sensing inhibitor rate is low, network service quality is poor, it is unreliable to run, resource is made to be difficult to play optimum efficiency.
Utility model content
Therefore, for above-mentioned problem, the utility model proposes the PDT Digital Clustering radio frequency spread subscriber device that a kind of structure is simple, improve quorum sensing inhibitor rate raising network service quality, make resource performance optimum efficiency.
For solving this technical problem, the utility model takes following scheme: a kind of PDT Digital Clustering radio frequency spread subscriber device, comprises power supply, monitoring unit, Modem, ICS echo is from disappearing unit, retransmitting antenna, donor antenna, first duplexer, second duplexer, up link and down link, described up link comprises the up LNA module connected successively, low-converter, intermediate frequency filtering module, upconverter, up Doherty power amplifier, described down link comprises the descending LNA module connected successively, low-converter, intermediate frequency filtering module, upconverter and descending Doherty power amplifier, described monitoring unit is connected with the modules of down link with up link respectively and whether management and monitoring modules runs normal, described monitoring unit gained modules operation parameters is sent to back-stage management server through Modem is long-range, described ICS echo to be connected with the intermediate frequency filtering module of up link and down link the multi-path jamming produced for eliminating the feedback interference and external environment condition that produce between retransmitting antenna and donor antenna and object respectively from the unit that disappears, and described power supply is monitoring unit, ICS echo is powered from the modules of disappear unit and up link and down link,
Described retransmitting antenna receives the PDT Digital Clustering signal of self terminal, deliver to after up LNA module is amplified through first duplexer filtering and export low-converter to, export analog if signal to intermediate frequency filtering module by low-converter again and carry out filtering and frequency-selecting amplification, then export frequency-selecting signal by intermediate frequency filtering module to convert digital intercom radiofrequency signal to by upconverter and export up Doherty power amplifier to and carry out high-power amplification, export high power digital intercommunication radiofrequency signal by up Doherty power amplifier again and be sent to base station by donor antenna after the second duplexer filtering,
Donor antenna receives the PDT Digital Clustering signal from base station, deliver to after descending LNA module is amplified through the second duplexer filtering and export low-converter to, export analog if signal to intermediate frequency filtering module by low-converter again and carry out filtering and frequency-selecting amplification, then export frequency-selecting signal by intermediate frequency filtering module to be transformed into digital intercom radiofrequency signal by upconverter and to export descending Doherty power amplifier to and carry out high-power amplification, to be exported after high power digital intercommunication radiofrequency signal to first duplexer filtering by retransmitting antenna to area of coverage radiation by descending Doherty power amplifier again.
Further improvement, described monitoring unit is also provided with local RS232 port.
Further improve, also comprise battery, described battery is connected for monitoring unit provides back-up source with monitoring unit.
By adopting preceding solution, the beneficial effects of the utility model are: arrange the utility model product by the signal blind zone in PDT digital cluster system and weak district, make PDT digital cluster system can do automatic detection to the PDT Digital Clustering signal of input, output, when discovery signal is greater than set point, namely automatically close up link and down link by monitoring unit; When after signal recuperation, more automatically open, proterctive equipment is not damaged; When equipment operation irregularity (self-excitation etc.) being detected, interference signal is expected from the unit inspection that disappears by ICS echo, adopt DSP algorithm, effective process feedback self-oscilation signal, improve isolation of system degree, the isolation of system degree of 30-40dB can be improved, automatically realize isolation inspection, automatic adaptation adjustment, namely closes up link and down link by monitoring unit automatically when not adjusting; And equipment volume of the present utility model is little, integrated chassis, it is convenient to install, and namely adopt high integration integrated module and the design of integrated chassis frame mode, cabinet itself carries hanger, directly can hang wall; Make equipment have volume little, be convenient to the features such as installation and maintenance; Also can carry out this locality, remote monitoring, namely adopt industry standard communication protocol, there is local RS232 port communication function; Telecommunication monitoring adopts GSMMODEM to be sent to far-end by short message mode.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the utility model embodiment.
Embodiment
Now with embodiment, the utility model is further illustrated by reference to the accompanying drawings.
With reference to figure 1, ARC digital cluster system signal blind compensating device of the present utility model, comprises power supply, battery 1, monitoring unit 2, Modem3, ICS echo is from disappearing unit 10, retransmitting antenna 4, donor antenna 5, first duplexer 6, second duplexer 7, up link and down link, described first duplexer 6 and the second duplexer 7 are the cavity body filter of cross-coupled manner design, the cross-coupled manner of this cavity body filter is the radiation coupling by introducing between non-adjacent chamber, transmission zero can be produced near pass-band, make passband arrive the filtration of decay more precipitous, there is Out-of-band rejection degree high, low Adjacent Carrier Leakage and the little feature of overall dimension, major function is the bandpass filtering single carrier frequency being carried out to high degree of suppression, and described up link comprises the up LNA module 81 connected successively, low-converter 82, intermediate frequency filtering module 83, upconverter 84, up Doherty power amplifier 85, described down link comprises the descending LNA module 91 connected successively, low-converter 92, intermediate frequency filtering module 93, upconverter 94 and descending Doherty power amplifier 95, described monitoring unit 2 is also provided with local RS232 port, described monitoring unit 2 is connected with the modules of down link with up link respectively and whether management and monitoring modules runs normal, described monitoring unit 2 gained modules operation parameters is sent to back-stage management server through Modem3 is long-range, described ICS echo from disappear unit 10 respectively with the intermediate frequency filtering module 83 of up link and down link, 93 multi-path jamming be connected for eliminating feedback interference and external environment condition and the object generation produced between retransmitting antenna 4 and donor antenna 5, described power supply is monitoring unit 2, ICS echo is powered from the modules of disappear unit 10 and up link and down link, and described battery 1 is connected with monitoring unit 2 for monitoring unit 2 provides back-up source,
Described retransmitting antenna 4 receives the PDT Digital Clustering signal of self terminal, deliver to after first duplexer 6 carries out bandpass filtering after up LNA module 81 is amplified and export low-converter 82 to, export analog if signal to intermediate frequency filtering module 83 by down-conversion 82 device again and carry out filtering and frequency-selecting amplification, the process of ICS automotive resistance is carried out by ICS echo from the signal of the cell pairs frequency filtration module 83 that disappears time logical, then export frequency-selecting signal by intermediate frequency filtering module 83 to convert digital intercom radiofrequency signal to by upconverter 84 and export up Doherty power amplifier 85 to and carry out high-power amplification, export high power digital intercommunication radiofrequency signal by up Doherty power amplifier 85 again and be sent to base station by donor antenna 5 after the second duplexer 7 bandpass filtering,
Donor antenna 5 receives the PDT Digital Clustering signal from base station, deliver to after descending LNA module 91 is amplified through the second duplexer 7 filtering and export low-converter 92 to, export analog if signal to intermediate frequency filtering module 93 by low-converter 92 again and carry out filtering and frequency-selecting amplification, the process of ICS automotive resistance is carried out by ICS echo from the signal of the cell pairs frequency filtration module 93 that disappears time logical, then export frequency-selecting signal by intermediate frequency filtering module 93 to be transformed into digital intercom radiofrequency signal by upconverter 94 and to export descending Doherty power amplifier 95 to and carry out high-power amplification, to be exported after high power digital intercommunication radiofrequency signal to first duplexer 6 bandpass filtering by retransmitting antenna 4 to area of coverage radiation by descending Doherty power amplifier 95 again.
The utility model arranges the utility model product by the signal blind zone in PDT digital cluster system and weak district, make PDT digital cluster system can do automatic detection to the PDT Digital Clustering signal of input, output, when discovery signal is greater than set point, namely automatically close up link and down link by monitoring unit; When after signal recuperation, more automatically open, proterctive equipment is not damaged; When equipment operation irregularity (self-excitation etc.) being detected, interference signal is expected from the unit inspection that disappears by ICS echo, adopt DSP algorithm, effective process feedback self-oscilation signal, improve isolation of system degree, the isolation of system degree of 30-40dB can be improved, automatically realize isolation inspection, automatic adaptation adjustment, namely closes up link and down link by monitoring unit automatically when not adjusting; And equipment volume of the present utility model is little, integrated chassis, it is convenient to install, and namely adopt high integration integrated module and the design of integrated chassis frame mode, cabinet itself carries hanger, directly can hang wall; Make equipment have volume little, be convenient to the features such as installation and maintenance; Also can carry out this locality, remote monitoring, namely adopt industry standard communication protocol, there is local RS232 port communication function; Telecommunication monitoring adopts GSMMODEM to be sent to far-end by short message mode.
Although specifically show in conjunction with preferred embodiment and describe the utility model; but those skilled in the art should be understood that; not departing from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection range of the present utility model.
Claims (3)
1. a PDT Digital Clustering radio frequency spread subscriber device, is characterized in that: comprise power supply, monitoring unit, Modem, ICS echo is from disappearing unit, retransmitting antenna, donor antenna, first duplexer, second duplexer, up link and down link, described up link comprises the up LNA module connected successively, low-converter, intermediate frequency filtering module, upconverter, up Doherty power amplifier, described down link comprises the descending LNA module connected successively, low-converter, intermediate frequency filtering module, upconverter and descending Doherty power amplifier, described monitoring unit is connected with the modules of down link with up link respectively and whether management and monitoring modules runs normal, described monitoring unit gained modules operation parameters is sent to back-stage management server through Modem is long-range, described ICS echo to be connected with the intermediate frequency filtering module of up link and down link the multi-path jamming produced for eliminating the feedback interference and external environment condition that produce between retransmitting antenna and donor antenna and object respectively from the unit that disappears, and described power supply is monitoring unit, ICS echo is powered from the modules of disappear unit and up link and down link,
Described retransmitting antenna receives the PDT Digital Clustering signal of self terminal, deliver to after up LNA module is amplified through first duplexer filtering and export low-converter to, export analog if signal to intermediate frequency filtering module by low-converter again and carry out filtering and frequency-selecting amplification, then export frequency-selecting signal by intermediate frequency filtering module to convert digital intercom radiofrequency signal to by upconverter and export up Doherty power amplifier to and carry out high-power amplification, export high power digital intercommunication radiofrequency signal by up Doherty power amplifier again and be sent to base station by donor antenna after the second duplexer filtering,
Donor antenna receives the PDT Digital Clustering signal from base station, deliver to after descending LNA module is amplified through the second duplexer filtering and export low-converter to, export analog if signal to intermediate frequency filtering module by low-converter again and carry out filtering and frequency-selecting amplification, then export frequency-selecting signal by intermediate frequency filtering module to be transformed into digital intercom radiofrequency signal by upconverter and to export descending Doherty power amplifier to and carry out high-power amplification, to be exported after high power digital intercommunication radiofrequency signal to first duplexer filtering by retransmitting antenna to area of coverage radiation by descending Doherty power amplifier again.
2. PDT Digital Clustering radio frequency spread subscriber device according to claim 1, is characterized in that: described monitoring unit is also provided with local RS232 port.
3. PDT Digital Clustering radio frequency spread subscriber device according to claim 1 and 2, it is characterized in that: also comprise battery, described battery is connected for monitoring unit provides back-up source with monitoring unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520636259.5U CN204948069U (en) | 2015-08-21 | 2015-08-21 | A kind of PDT Digital Clustering radio frequency spread subscriber device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520636259.5U CN204948069U (en) | 2015-08-21 | 2015-08-21 | A kind of PDT Digital Clustering radio frequency spread subscriber device |
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| CN204948069U true CN204948069U (en) | 2016-01-06 |
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| CN201520636259.5U Expired - Fee Related CN204948069U (en) | 2015-08-21 | 2015-08-21 | A kind of PDT Digital Clustering radio frequency spread subscriber device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888274A (en) * | 2016-09-30 | 2018-04-06 | 展讯通信（上海）有限公司 | Movable signal relay amplification device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888274A (en) * | 2016-09-30 | 2018-04-06 | 展讯通信（上海）有限公司 | Movable signal relay amplification device |
| CN107888274B (en) * | 2016-09-30 | 2021-01-26 | 展讯通信（上海）有限公司 | Mobile signal relay amplifier |
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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: 20160106 Termination date: 20180821 |