CN202143156U - Wireless transmission device used for enlarging digital television transmitter coverage area - Google Patents
Wireless transmission device used for enlarging digital television transmitter coverage area Download PDFInfo
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- CN202143156U CN202143156U CN201120246407U CN201120246407U CN202143156U CN 202143156 U CN202143156 U CN 202143156U CN 201120246407 U CN201120246407 U CN 201120246407U CN 201120246407 U CN201120246407 U CN 201120246407U CN 202143156 U CN202143156 U CN 202143156U
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- signal
- wireless transmission
- television transmitter
- digital
- digital television
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Abstract
The utility model discloses a wireless transmission device used for enlarging the digital television transmitter coverage area, and relates to the technology field of signal transmission and signal coverage of a digital terrestrial television transmitter. A master station includes a master station digital television transmitter, a power coupler, a wireless transmission system, and a transmitting antenna which are arranged in order. The structural characteristics are that: the wireless transmission device also includes a plurality of slave stations which are arranged on the periphery of the signal coverage of the master station, and the slave station includes a receiving antenna, a code stream regeneration system, a slave station digital television transmitter, and the transmitting antenna which are arranged in order. An adapter is arranged between the power coupler and the wireless transmission system of the master station. Compared with the prior art, the wireless transmission device can effectively enlarge the coverage area of the digital television transmitter, and has the characteristics of low investment, small construction volume, stable coverage, and excellent signal.
Description
Technical field
The utility model relates to the signal transmission and the signal soverlay technique field of digital terrestrial television transmitter, especially for the radio transmitting device that enlarges the digital TV transmitter area coverage.
Background technology
Along with DTV replaces simulated television gradually, the signal covering problem of digital TV transmitter and the transmission problem of digital television signal code stream have become to influence the factor that digital terrestrial television develops.The popularization of DTV will inevitably occupy a large amount of frequency resources, and frequency resource is limited.
In the existing technology, in order to enlarge the digital TV transmitter area coverage, a kind of mode is that the method through SFN is implemented in large-area covering in the frequency range, and the mode that generally adopts is that the small-power multiple spot covers.This mode can be described as a kind of reliable and stable coverage mode, also is a kind of mode of comparative maturity, but this mode can receive build a station with the expensive restriction of a whole set of transmission equipment.Another kind of mode is to mend the some device or the method for repeater through doing, and this kind method is fairly simple, and the expense of engineering will be lacked much relatively, but its effect differs greatly with respect to SFN.Because not only amplify useful signal simple benefit point device or repeater; Also noise is amplified simultaneously; That is to say and to cause deterioration to a certain degree to the signal of main website; Occur having only field intensity and do not have the phenomenon of signal quality, make the receiving equipment can't normal decoder, and adopt this kind mode to make signal very unstable.
Summary of the invention
In order to overcome the deficiency that exists in the above-mentioned prior art, the purpose of the utility model provides a kind of radio transmitting device that is used to enlarge the digital TV transmitter area coverage.It can effectively enlarge the area coverage of digital TV transmitter, has the advantages that investment is little, construction volume is little, covering is stable, signal is good.
In order to reach the foregoing invention purpose, the technical scheme of the utility model realizes as follows:
Be used to enlarge the radio transmitting device of digital TV transmitter area coverage, its main website comprises main website digital TV transmitter, power coupler, wireless transmitting system and the transmitting antenna that links to each other successively.Its design feature is, it also comprises a plurality of pair stations that said main website signal covers the edge that are arranged on, and said secondary station comprises the reception antenna, the code stream that connect successively live again system, secondary digital TV transmitter and the transmitting antenna of standing.Connection adaptor between the power coupler of main website and the wireless transmitting system.
In above-mentioned radio transmitting device, the said code stream system of living again adopts active and standby two covers.
The utility model is owing to adopted above-mentioned structure, and area coverage is further stablized, improved reliably in the covering edge in main website through the mode of building secondary station.The utility model adopts the code stream technology of living again; Can fundamentally solve the noise that the RF signal brings in transmission course adds up; Avoided the next stage amplifying circuit to noise further worsen maybe, the purpose that has also realized making the signal quality at place, increase coverage territory at utmost to optimize simultaneously.The utility model utilizes the theory of radio-frequency protection ratio; Can make signal coherence district large tracts of land dwindle or will be concerned with and move on to the mode of useless region; So that area coverage obtains maximum extension and expansion, for practicing thrift frequency resource, the stable covering of low-cost, high-quality provides maybe.
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Description of drawings
Fig. 1 is the utility model main website structural representation;
Fig. 2 is the secondary station structure sketch map of the utility model.
Embodiment
Referring to Fig. 1, the main website of the utility model comprises main website digital TV transmitter, power coupler, adapter, wireless transmitting system and the transmitting antenna that links to each other successively.Referring to Fig. 2, the utility model also comprises a plurality of pair stations that the main website signal covers the edge that are arranged on.Said secondary station comprises the reception antenna that connects successively, active and standby two cover code streams live again system, secondary digital TV transmitter and the transmitting antenna of standing.
The main website digital TV transmitter of the utility model main website is responsible for signal program is sent on the STB that can receive this signal user.Power coupler is responsible for accomplishing the coupling of output signal, then the signal that is coupled to is outputed to adapter; Adapter is according to the requirement of wireless transmitting system, with conversion of signals to the needed interface of wireless transmitting system, and charge completion signal stable, optimize and corresponding the processing.Wireless transmitting system is responsible for the signal after the optimization process is gone out through transmission antennas transmit.The code stream system of living again at the secondary station of the utility model is responsible for the signal that the main website wireless transmitting system emits is handled; And be reduced into the original signal of main website digital TV transmitter; The entrained information of information that this signal is entrained and primary signal is identical; And the signal to noise ratio of this signal and the signal to noise ratio of primary signal are suitable basically; The signal quality of promptly secondary station quality of signals that digital TV transmitter obtained and main website digital TV transmitter is basic identical, thereby the margin signal quality of overlay area is greatly improved.
Claims (2)
1. be used to enlarge the radio transmitting device of digital TV transmitter area coverage; Its main website comprises main website digital TV transmitter, power coupler, wireless transmitting system and the transmitting antenna that links to each other successively; It is characterized in that; It also comprises a plurality of pair stations that said main website signal covers the edge that are arranged on; Said secondary station comprises the reception antenna, the code stream that connect successively live again system, secondary digital TV transmitter and the transmitting antenna of standing, connection adaptor between the power coupler of main website and the wireless transmitting system.
2. radio transmitting device according to claim 1 is characterized in that, the said code stream system of living again adopts active and standby two covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120246407U CN202143156U (en) | 2011-07-13 | 2011-07-13 | Wireless transmission device used for enlarging digital television transmitter coverage area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120246407U CN202143156U (en) | 2011-07-13 | 2011-07-13 | Wireless transmission device used for enlarging digital television transmitter coverage area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202143156U true CN202143156U (en) | 2012-02-08 |
Family
ID=45554191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120246407U Expired - Fee Related CN202143156U (en) | 2011-07-13 | 2011-07-13 | Wireless transmission device used for enlarging digital television transmitter coverage area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202143156U (en) |
-
2011
- 2011-07-13 CN CN201120246407U patent/CN202143156U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20190713 |