CN1713726A - Multipath satellite receiving system for preventing same frequency disturbance - Google Patents
Multipath satellite receiving system for preventing same frequency disturbance Download PDFInfo
- Publication number
- CN1713726A CN1713726A CN 200510026984 CN200510026984A CN1713726A CN 1713726 A CN1713726 A CN 1713726A CN 200510026984 CN200510026984 CN 200510026984 CN 200510026984 A CN200510026984 A CN 200510026984A CN 1713726 A CN1713726 A CN 1713726A
- Authority
- CN
- China
- Prior art keywords
- output
- input
- distributor
- feed
- signal
- 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.)
- Pending
Links
Images
Abstract
The invention consists of at least two feedback sources, at least two distributors, switcher, receiver and TV set. The output of feedback source connects to input of distributor, and output of each distributor connects to input of switcher. The output of switcher connects to input of receiver. The output of receiver connects to signal input end of TV set. The power supply unit and signal transmission unit are set between output of feedback source and input of distributor. The amplifier is set between output of distributor and input of switcher. Through amplifier, makes only one signal to be transmitted in input of switch so that same frequency interference can be avoided.
Description
Technical field
The present invention relates to satellite receiving system, particularly a kind of multipath satellite receiving system that prevents co-channel interference.
Background technology
The satellite receiving system that is used for the multi-user at present has three kinds, the one, receive the mode that multiple signals and modulation are exported, the signal that antenna feed receives is imported a plurality of receivers through distributor, receiver of each programme signal, the receiver output signal is through the radiofrequency signal of modulators modulate one-tenth corresponding to the different frequency of each channel of TV set, mix the back enters each user terminal by circuit, splitter television set, this is the technology that the current cable system adopts, the program that receives is many, but number of devices is many, cost is high, is applicable to the receiving system that number of users is huge.
The another kind of mode that receives one-channel signal and distribute output, the signal that feed receives is imported a plurality of receivers through distributor, television set of the corresponding connection of each receiver, this system equipment quantity is few, cost is low, be suitable for the few user of quantity, but can only receive one road signal, i.e. the signal of a wave band polarised direction, the program of reception is few.
Another is the mode that receives the different-waveband signal and distribute output, antenna of each band setting and feed, distributor, and the switch identical, receiver, television set with number of users, in each group, the input of feed and distributor is connected, the output of the distributor of each group is by every group one road input that inserts each switch, and the output of switch is connected with the input of receiver, and the output of receiver is connected with the signal input part of television set.Receiver is selected to be connected with the output of each distributor by switch, to receive the signal of different feed outputs.Because the local frequency that the signal frequency range with wave band is identical, feed uses is identical, the signal frequency height adds each input less barrier property of switch, two groups of signals with wave band can cause co-channel interference, can't receive, therefore this system is only applicable to receive the different-waveband signal, can't receive for the signal with different polarised directions in the wave band.
Summary of the invention
The object of the invention provides a kind of the reception with the wave band multiple signals, prevents the multipath satellite receiving system of co-channel interference.
The solution of the present invention is: the multipath satellite receiving system that prevents co-channel interference, comprise at least two feeds, at least two distributors, and the switch identical with number of users, receiver, television set, in each group, the output of feed is connected with the input of distributor, the output of the distributor of each group is by every group one road input that inserts each switch, the output of switch is connected with the input of receiver, the output of receiver is connected with the signal input part of television set, wherein, be connected with power supply and signal transmitting apparatus between the output of feed and the input of distributor, be connected with amplifier between the output of each distributor and the input of switch.
Power supply and signal transmitting apparatus are made up of power end, feed link, output, inductance, electric capacity, and inductance is connected between power end and feed link, and electric capacity is connected between feed link and output.
The output of feed is connected with the feed link of power supply and signal transmitting apparatus, and power supply is connected with the input of distributor with the output of signal transmitting apparatus, and power supply is connected with power supply with the power end of signal transmitting apparatus.
Advantage of the present invention is: owing to be connected with amplifier between the input of the output of each distributor and switch, amplifier is an active device, and its power supply is powered through switch by receiver, if amplifier gets electric work, signal there is amplification, if outage has attenuation to signal.By the work of amplifier, make in the input of switch and have only a signal is arranged, prevented from switch, to produce co-channel interference, promptly prevented the co-channel interference of whole system; In addition, power supply and signal transmitting apparatus be directly to feed power supply, can avoid each receiver owing to the user sets the influence to feed of supply power voltage difference that different polarised directions cause, makes the feed working stability.
Description of drawings
The invention will be further described with embodiment with reference to the accompanying drawings below.
Fig. 1 is a circuit catenation principle block diagram of the present invention.
Fig. 2 is power supply and signal transmitting apparatus electrical schematic diagram.
Mark among the figure: 1 feed, 2 power supply and signal transmitting apparatus, 3 distributors, 4 amplifiers, 5 switchs, 6 receivers, 7 television sets, 8 power supplies, L inductance, C electric capacity.Wherein the power supply and signal transmitting apparatus in, 21 power ends, 22 feed links, 23 outputs.
Embodiment
As shown in Figure 1, the multipath satellite receiving system that prevents co-channel interference of embodiment comprises two feeds 1, two distributors 3, and four switchs 5, receiver 6, the television set 7 identical with number of users.In each group, the output of feed 1 is connected with the input of distributor 3, the output of the distributor 3 of each group is by every group one road input that inserts each switch 5, the output of switch 5 is connected with the input of receiver 6, the output of receiver 6 is connected with the signal input part of television set 7, be connected with power supply and signal transmitting apparatus 2 between the input of the output of feed 1 and distributor 3, be connected with amplifier 4 between the input of the output of each distributor 3 and switch 5.
As shown in Figure 2, power supply and signal transmitting apparatus 2 are made up of power end 21, feed link 22, output 23, inductance L, capacitor C, and inductance L is connected on 22 of power end 21 and feed links, and capacitor C is connected 23 of feed link 22 and outputs.
Again in conjunction with Fig. 1 and Fig. 2, the output of feed 1 is connected with the feed link 22 of power supply and signal transmitting apparatus 2, power supply is connected with the input of distributor 3 with the output 23 of signal transmitting apparatus 2, and power supply is connected with power supply 8 with the power end 21 of signal transmitting apparatus 2.
To feed 1 power supply, inductance L has been isolated high-frequency signal to power supply 8, prevents the interference of 1 of two feed through inductance L.The signal of feed 1 is transferred to relative distributor 3 through capacitor C, and capacitor C plays the transmission signals effect, has isolated direct current simultaneously.Because feed 1 is to select the polarizations direction by the supply power voltage size, if each receiver is because the user sets difference, the supply power voltage difference that causes, can make the feed job insecurity, even can't work, therefore, directly power, can guarantee the feed working stability to feed 1 with power supply and signal transmitting apparatus 2.
During work, power supply 8 is to 1 power supply of two feeds, the signal of feed 1 is divided into four the tunnel through distributor 3, the output of two distributors 3 is by every group one tunnel input that inserts each switch 5 through each amplifier 4, the selection switching signal of receiver 6 outputs acts on switch 5, make it connect corresponding input selectively, receiver 6 output direct current supply electric currents during connection, make corresponding amplifier 4 get electric work, amplifier is an active device, during work signal there is amplification, if outage then has attenuation to signal, another amplifier is because not work, signal has been played iris action, had only one signal is arranged in the input of switch 5, prevented from switch 5, to produce co-channel interference.
Signal amplifies through amplifier 4, and is to receiver 6, treated through switch 5, is input in the television set 7, can play satellite programming.
Claims (3)
1. prevent the multipath satellite receiving system of co-channel interference, comprise at least two feeds (1), at least two distributors (3), and the switch identical (5) with number of users, receiver (6), television set (7), in each group, the output of feed (1) is connected with the input of distributor (3), the output of the distributor (3) of each group is by every group one road input that inserts each switch (5), the output of switch (5) is connected with the input of receiver (6), the output of receiver (6) is connected with the signal input part of television set (7), it is characterized in that: be connected with power supply and signal transmitting apparatus (2) between the input of the output of feed (1) and distributor (3), be connected with amplifier (4) between the input of output of each distributor (3) and switch (5).
2. the multipath satellite receiving system that prevents co-channel interference as claimed in claim 1, it is characterized in that: power supply and signal transmitting apparatus (2) are made up of power end (21), feed link (22), output (23), inductance (L), electric capacity (C), inductance (L) is connected between power end (21) and feed link (22), and electric capacity (C) is connected between feed link (22) and output (23).
3. the multipath satellite receiving system that prevents co-channel interference as claimed in claim 1, it is characterized in that: the output of feed (1) is connected with the feed link (22) of power supply and signal transmitting apparatus (2), power supply is connected with the input of distributor (3) with the output (23) of signal transmitting apparatus (2), and power supply is connected with power supply (8) with the power end (21) of signal transmitting apparatus (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510026984 CN1713726A (en) | 2005-06-22 | 2005-06-22 | Multipath satellite receiving system for preventing same frequency disturbance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510026984 CN1713726A (en) | 2005-06-22 | 2005-06-22 | Multipath satellite receiving system for preventing same frequency disturbance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1713726A true CN1713726A (en) | 2005-12-28 |
Family
ID=35719125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510026984 Pending CN1713726A (en) | 2005-06-22 | 2005-06-22 | Multipath satellite receiving system for preventing same frequency disturbance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1713726A (en) |
-
2005
- 2005-06-22 CN CN 200510026984 patent/CN1713726A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1159712A (en) | Equipment for distributing TV signal cable | |
| JPH04347937A (en) | Radio antenna changer and interconnecting device | |
| CN106878641B (en) | A kind of high-power universal transmitter realization device of Whole frequency band multichannel and method | |
| CN1039338A (en) | Transmission line switch | |
| CA1202093A (en) | Signal coupling apparatus | |
| CN102647213B (en) | Wireless communication system and method | |
| CN1156984C (en) | Dual transmitter arrangement with back-up switching | |
| CN103023435B (en) | Low noise converter of satellite broadcasting receiver | |
| EP1987611A2 (en) | Distribution of data signals from broadcast data receiving means | |
| CN1254093C (en) | RF system integrated with RF switch and RF modulation | |
| CN1077314A (en) | Diversity antenna | |
| CN103179388A (en) | Matrix receiving method and device for multiple satellite digital television signals | |
| CN1713726A (en) | Multipath satellite receiving system for preventing same frequency disturbance | |
| CN1141517A (en) | Transmitting and receiving apparatus | |
| CN203136068U (en) | Multi-channel satellite digital television signal matrix receiving device | |
| CN102292987A (en) | Rf circuit module and panel | |
| CN1706131B (en) | Radio signal distribution device and reception system comprising said device | |
| US5386226A (en) | Connection unit for a television signal distribution system | |
| FI80176B (en) | HUSFOERDELNINGSNAET FOER ENKEL- OCH CENTRALANTENNANLAEGGNINGAR. | |
| JP3082841B2 (en) | Broadcaster output signal distribution and synthesis device | |
| CN219268920U (en) | Multi-channel digital television signal transmitting system and multi-channel digital television transmitter | |
| CN2927557Y (en) | Video-audio and control information transceiver based on five-kind line | |
| US20130202296A1 (en) | Optical node configuration apparatus | |
| CN109525341A (en) | There is the emergency broadcase system of terminal monitoring function when a kind of teletext | |
| CN203445955U (en) | Multifunctional monitoring headphone operating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |