CN87217226U - Distributor for satellite tv receiving power - Google Patents
Distributor for satellite tv receiving power Download PDFInfo
- Publication number
- CN87217226U CN87217226U CN 87217226 CN87217226U CN87217226U CN 87217226 U CN87217226 U CN 87217226U CN 87217226 CN87217226 CN 87217226 CN 87217226 U CN87217226 U CN 87217226U CN 87217226 U CN87217226 U CN 87217226U
- Authority
- CN
- China
- Prior art keywords
- satellite
- diode
- distributor
- tuner
- power
- 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.)
- Withdrawn
Links
- 239000003990 capacitor Substances 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract 3
- 230000003993 interaction Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Landscapes
- Details Of Television Systems (AREA)
Abstract
The utility model relates to a distributor for satellite tv receiving power. The distributor connects an output terminal and an input terminal in parallel connected mode of a capacitor and a diode to ensure that each reception station can feed back electricity to a radio-frequency head through each diode. Each reception station can freely work without interaction. The power distributor can make each reception station share a satellite antenna and the radio-frequency head and automaticly choose the highest direct current feedback electricity to feed back electricity to the radio-frequency head. The utility model is especially suitable for a satellite tv receiving station built by joint venture of some small enterprises.
Description
The utility model relates to a kind of satellite television received power distributor.
In satellite television receiving system, to supply with the satellite television programming that a plurality of receiving platforms are watched different channel, then must between tuner and receiving platform, be provided with power divider with an antenna and tuner.The main effect of this power divider is exactly with equal each receiving platform that distributes of the TV receiving signal of tuner permanently.At present, popular this power divider on the market generally all has a main receiving station and a plurality of secondary receiving platform at its output branch.The 2-8 road power divider of producing as Japanese DX antenna Co., Ltd is exactly like this.This distributor adopts main receiving station directly to the tuner feed, single DC channel form that each slave station can not feed.Promptly between each slave station and tuner, all be connected to a capacitance, to realize sending the tuner direct voltage to by main receiving station, and receive satellite TV signal through the tuner frequency conversion, and cause each slave station not transmit direct current to tuner, can only receive satellite TV signal from tuner.Therefore, just caused when main receiving station shutdown or machine power failure occurs and stop tuner being powered, slave station just can't be worked, and causes the out of use defective of these users.
The purpose of this utility model is to overcome the deficiency of above-mentioned power divider, provides a kind of each receiving platform that makes can both freely work and be independent of each other, and the power divider of shared reception antenna of energy and tuner.
Realize that scheme of the present utility model is to be connected to electric capacity and two elements of diode that are connected in parallel respectively between each output of power divider and input, guaranteeing that receiving platform that each output connect all can be by the diode on the path separately to the tuner feed that is connected input, and there is not the branch of main receiving station and secondary receiving platform.Power divider then automatically selects receiving platform that wherein feed voltage is the highest to the tuner feed.The electric capacity on each road and diode have intercepted the receiving platform reverse charging of the receiving platform of High Level DC Voltage to low dc voltage again effectively.When each user's feed voltage equated, they can be jointly to the tuner feed.
Followingly will be described in detail structural principle of the present utility model with reference to accompanying drawing.
Fig. 1 is a shape assumption diagram of the present utility model.
Fig. 2 is mixing integrated circuit figure of the present utility model.
Fig. 3 is a discrete component line map of the present utility model.
That draw among Fig. 1 is 2-12 power divider structure figure, and wherein the joint (1a) in the middle of each power splitter top is an input.All the other each joints are output.Each power splitter is according to its classification difference, and overall dimension can corresponding increase or reduced.The length and width of general 2 power splitters, thick 60 * 45 * 20mm that is of a size of.The length and width of 12 power splitters, thick 200 * 60 * 80mm that is of a size of.The line construction of being adorned in the power splitter housing＜has only been drawn two-way〉as shown in Figure 2 among the figure.All seal in high-frequency bypass capacitor (2) on the output line (1) on each road, this electric capacity provides path to the radiofrequency signal from tuner.And diode (5) can be directly parallel in when its overall dimension is very little on the electric capacity (2), and its polarity is that negative pole connects output.This diode provides DC channel for the DC power supply from receiving platform to the tuner feed, and selects the source of the receiving platform of High Level DC Voltage as feed automatically according to the voltage swing at diode two ends; Connecing on the branch road of low dc voltage, diode is in open-circuit condition, has prevented the reverse charge of High Level DC Voltage source to it.When the diode size was big, its access meeting impacted the coupling of output transmission line, and quarter-wave high resistant line (3) among the figure and low-resistance line (4) are exactly to be provided with for this reason.Quarter-wave open circuit low-resistance line makes its input impedance over the ground approach zero, thereby any point that high resistant line (3) is connected on output line (1) can not impact the coupling of output line.Diode (5) is connected on the intersection point of high resistant line (3) and low-resistance line (4), because this point is in the high frequency earth resistance, the access of diode (5) is not exerted an influence to high-frequency transmission.Resistance R is a balance resistance.
Another embodiment of the present utility model adopts the dereliction platform power splitter with the line transformer formation shown in Figure 3＜also only to draw two the tunnel among the figure 〉.Line transformer among the figure (1) is connected into the form of homophase distributor, and resistance (2) is balance resistance.This is a typical Riblet coupler.In order to make it become dereliction platform power divider, on the output line on each road, all sealed in high-frequency bypass capacitor (3), and electric capacity parallel diode (4) therewith.The diode pair direct current provides path, and selects the receiving platform of feed automatically; High-frequency bypass capacitor provides path to the radiofrequency signal from tuner.This power divider realizes that the principle and the hybrid integrated circuit power divider above-mentioned of dereliction platform power division is identical.
The utility model is not because its output has the branch of main receiving station and secondary receiving platform, thereby each receiving platform can both freely work, and is not subjected to other impact. And kept existing satellite television to receive the complete characteristic of the conventional power divider of usefulness. Simultaneously owing to use this power splitter can make each receiving platform share a satellite earth antenna and tuner, therefore, be conducive to subsection and build satellite TV receiving station jointly, also be suitable in the family respectively splitting several receivers at chummery not, at this moment each receiver can freely use. In addition, transfer from one department to another in the system in closed-circuit television or the terrestrial television difference of utilizing multi-receiver to carry out the multichannel relay, can prevent from interrupting because main platform fault makes the relay of other channel, improved the reliability of system.
Claims (1)
1, a kind of satellite television received power distributor that comprises resistance, electric capacity and microstrip line, an input that joins with tuner and a plurality of output that joins with each receiver are respectively wherein arranged, it is characterized in that each output all is to be connected with input by diode in parallel on the electric capacity, make the receiver that each output connects all can be by the diode on the path separately to the tuner feed, power divider then automatically selects receiver that wherein DC feedback is the highest to the tuner feed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87217226 CN87217226U (en) | 1987-12-31 | 1987-12-31 | Distributor for satellite tv receiving power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87217226 CN87217226U (en) | 1987-12-31 | 1987-12-31 | Distributor for satellite tv receiving power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87217226U true CN87217226U (en) | 1988-09-14 |
Family
ID=4831031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87217226 Withdrawn CN87217226U (en) | 1987-12-31 | 1987-12-31 | Distributor for satellite tv receiving power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87217226U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101268694B (en) * | 2005-09-19 | 2011-11-09 | 汤姆逊许可证公司 | Adaptive impedance for LNB power supply output in dependence on communication mode/protocol |
| CN105915825A (en) * | 2012-11-22 | 2016-08-31 | 江苏华兴电子有限公司 | High-frequency head assembly with antenna isolator and production method thereof |
-
1987
- 1987-12-31 CN CN 87217226 patent/CN87217226U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101268694B (en) * | 2005-09-19 | 2011-11-09 | 汤姆逊许可证公司 | Adaptive impedance for LNB power supply output in dependence on communication mode/protocol |
| CN105915825A (en) * | 2012-11-22 | 2016-08-31 | 江苏华兴电子有限公司 | High-frequency head assembly with antenna isolator and production method thereof |
| CN105915825B (en) * | 2012-11-22 | 2018-10-02 | 江苏华兴电子有限公司 | Tuner component with antenna isolator and its production method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN87217226U (en) | Distributor for satellite tv receiving power | |
| CN212162839U (en) | Capacity-expandable hot-plug type battery power supply system | |
| CN211830247U (en) | Multi-battery charging and discharging control device and system | |
| CN1141517A (en) | sending and receiving device | |
| CN104779975A (en) | A differential coupling communication device of high speed power line carrier system | |
| CN206149276U (en) | Light switching switch RF power detection circuit | |
| CN204559568U (en) | A kind of differential couple communicator of high speed power line carrier system | |
| CN217445471U (en) | Single-wire serial port communication circuit | |
| CN219740460U (en) | Filtering device for 2+1 system standby machine of ground digital television transmitter | |
| CN219287178U (en) | Lithium battery charge-discharge dual protection circuit | |
| CN218498507U (en) | Charging gun with colorful indicator light and radio frequency | |
| CN215990935U (en) | Frequency modulation is broadcast supervisory equipment fully based on thing networked control | |
| CN214228246U (en) | Short wave signal radio frequency low frequency isolation type transmitting-receiving device | |
| CN2239109Y (en) | Parallel operation device for ultrahigh frequency television transmitter | |
| CN216905097U (en) | Cable TV signal uninterrupted transmission device | |
| CN211351762U (en) | Communication protection device | |
| CN2318758Y (en) | High-frequency device for receiving KU-band satellite signal | |
| CN2392320Y (en) | Device for transferring and transmission of video/audio signals | |
| CN2294527Y (en) | Antenna polarization control network | |
| CN214851415U (en) | Intelligent broadcast control console capable of automatically switching on and off emission and coding | |
| CN220896688U (en) | Wireless roaming covering equipment based on multiple fusion | |
| CN220673402U (en) | Inverter parallel-to-off-grid switching device | |
| CN221428582U (en) | BMS-based hardware short-circuit protection circuit | |
| CN217469952U (en) | Power supply circuit of radio frequency electronic change-over switch and radio frequency circuit | |
| CN222599776U (en) | Insulation detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |