CN201048432Y - Frequency-division section type broadband branching device - Google Patents
Frequency-division section type broadband branching device Download PDFInfo
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- CN201048432Y CN201048432Y CNU2007200632064U CN200720063206U CN201048432Y CN 201048432 Y CN201048432 Y CN 201048432Y CN U2007200632064 U CNU2007200632064 U CN U2007200632064U CN 200720063206 U CN200720063206 U CN 200720063206U CN 201048432 Y CN201048432 Y CN 201048432Y
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/48—Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
- H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers
- H04N7/104—Switchers or splitters
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Systems (AREA)
Abstract
The utility model relates to a frequency band differentiating type broadband hub, which belongs to the community antenna TV field of the cable TV and the Satellite TV. According to the transmitting character of a high-frequency signal, adopting the frequency band differentiating principle, the utility model integrates a hub working in the low frequency band of 5MHz-860MHz and a hub working in the high frequency band of 50MHz-2050MHz into a united wide frequency band hub in 5MHz to 2050MHz. Compared with the common CATV hubs, the working band width of the utility model can reach 5-2050 MHz. The utility model can be used in a SMATV system as well as in a CATV system. The frequency respondence of the hub has excellent property, and the in-band insertion loss is less than 2.5 dB. The utility model has no special requirement on the producing technique of every adopted component, and can be well produced in mass.
Description
Technical field
The utility model relates to and both can be used for cable TV (Community Antenna Television, be abbreviated as CATV) field, can be used for Satellite Master Antenna TeleVision (Satellite Master AntennaTelevision again, be abbreviated as SMATV) the frequency division segmentation broadband splitter in field, it has the wide operating frequency that reaches 5～2050MHz than general splitter.
Background technology
Splitter is a kind of critical piece that is widely used in the cable TV CATV system, and the frequency range that the cable TV splitter of prior art is used for the CATV system is 5MHz～860MHz; Its common structure is that branch circuit is by the branch end number, select one one splitter or one one splitter and one or more one-level distributor, secondary splitter to form, wherein the transmission coil of the high frequency magnetic core line transformer of a splitter and coupling coil are altogether on same flat two hole magnetic cores, coupling coil one end is through mutual electric capacity, grounding through resistance in parallel, termination branch end or one-level distributor in addition; The matched coil of described I and II distributor and distribution coil are respectively on two diplopore magnetic cores; Distributing the coil two ends to stride resistance connects more than one branch end respectively and delivers to each family.Along with the increased popularity of satellite broadcasting television business, the signal that expectation receives cubical antenna is transported to the Satellite Master Antenna TeleVision SMATV system of each family by cable.And the frequency range of Satellite Master Antenna TeleVision SMATV system is 950MHz～2050MHz, high operating frequency like this, utilize existing splitter on cable, these all signal allocation to be transported to each family, in broadband, can not obtain high perfect performance.
The complete skill of relevant frequency division segmentation broadband splitter at home and abroad was not reported on the interrelated data, but similarly correlation technique has following record:
This technology of utility model patent 01117229.0 disclosed a kind of " dispenser device of TV signal, acceptor device, transmission system and method " that Sony corporation of Japan proposed March 1 calendar year 2001 is mentioned in television signal transmission system, uses the dispenser device of TV signal.
The utility model patent 92109497.3 " broad-band, high-isolation N-branch device " that people such as the Zhang Jiuyu of Guangdong Province, Guangzhou on the 10th August in 1992 goods and materials school, Wang Yuan propose is that a high-isolation N splitter is made of two N distributors and a N splitter.Its operating frequency is at whole VHF, in the UHF TV band.
Above-mentioned two splitters that correlation technique is mentioned can not both can be used for cable TV CATV field, can be used for Satellite Master Antenna TeleVision SMATV field again.
The utility model content
The technical problems to be solved in the utility model provides a kind of frequency division segmentation broadband splitter, the frequency range of splitter is extended to 5MHz～2050MHz by the 5MHz～860MHz of CATV system, make this splitter can be used for the SMATV system and can be used for the CATV system again.
Technical thought of the present utility model is: according to the transmission characteristic of high-frequency signal, adopt the principle of frequency-division section, with each port that is operated in two branch circuits of 5MHz～860MHz low-frequency range and 950MHz～2050MHz high band is to synthesize unified 5MHz～2050MHz wideband section by duplexer, thereby realizes broadband branch.Can make following breed structure according to this technical thought:
5～2050MHz SMATV-CATV frequency division segmentation broadband, one splitter;
5～2050MHz SMATV-CATV frequency division segmentation broadband, two splitters;
5～2050MHz SMATV-CATV frequency division segmentation broadband, three splitters;
5～2050MHz SMATV-CATV frequency division segmentation broadband, four splitters;
The technical solution of the utility model is achieved in that
A kind of frequency division segmentation broadband splitter, two branch circuits of 5MHz～860MHz low-frequency range and 950MHz～2050MHz high band are housed in a housing, wherein the input of low-frequency range branch circuit, output and branch end are connected input duplexer, output duplexer and one or more branch duplexer low pass filter port separately respectively, the input of high band branch circuit, output and branch end also respectively with corresponding linking to each other of high pass filter port of above-mentioned duplexer.
Described high band splitter is made up of a microstrip coupler and several microstrip power dividers, microstrip coupler is that a pair of coupling line parallel to each other is formed, the input of high band splitter is connected to output through a microstrip coupled line, the microstrip coupled line one end resistance grounded that another root is parallel, another termination microstrip power divider, what of the branches of the number of microstrip power divider and high band splitter are relevant.
Described microstrip power divider has the band of opening in the middle of being, opening part has the resistance cross-over connection, high pass filter that described duplexer filter is made up of printed inductor and SMT mounted on surface electric capacity and low pass filter and three port devices that are unified into.
Said structure of the present utility model, the dividing frequency of duplexer high pass filter are 5MHz～860MHz, and the dividing frequency of low pass filter is 950MHz～2050MHz.Different working bands is selected the branch circuit of different qualities for use, the frequency range of splitter is extended to 5MHz～2050MHz by the 5MHz～860MHz of CATV system, this splitter frequency response is good, can be used for the SMATV system, can be used for the CATV system again, insert loss in 950MHz～2050MHz frequency range less than 2.5dB; The utility model frequency division segmentation broadband splitter does not have specific (special) requirements to the every production technology of used element, and the good property produced by batch is arranged.
Description of drawings
The utility model is elaborated with concrete execution mode below in conjunction with accompanying drawing:
Fig. 1 is a splitter theory diagram of the present utility model;
Fig. 2 is low-frequency range one splitter circuit theory diagrams;
Fig. 3 is low-frequency range one a branch circuit structure chart;
Fig. 4 is high band one a branch circuit schematic diagram;
Fig. 5 is the duplexer filter circuit theory diagrams;
Fig. 6 is the duplexer filter structure chart;
Fig. 7 is two splitter theory diagrams of the present utility model;
Fig. 8 is a low-frequency range two branch circuit schematic diagram;
Fig. 9 is a low-frequency range two branch circuit structure chart;
Figure 10 is a high band two branch circuit schematic diagram;
Figure 11 is three splitter theory diagrams of the present utility model;
Figure 12 is low-frequency range three branch circuit schematic diagrams;
Figure 13 is low-frequency range three branch circuit structure charts;
Figure 14 is high band three branch circuit schematic diagrams;
Figure 15 is four splitter theory diagrams of the present utility model.
Figure 16 is low-frequency range four branch circuit schematic diagrams;
Figure 17 is low-frequency range four branch circuit structure charts;
Figure 18 is high band four branch circuit schematic diagrams;
Embodiment
On same flat two hole magnetic cores, coupling coil one end is through mutual capacitor C 1, resistance R 1 ground connection in parallel, termination branch end 3 in addition altogether for the transmission coil of the high frequency magnetic core line transformer 7 of the low-frequency range one branch circuit D1 in the accompanying drawing 2,3 and coupling coil;
The input 4 of accompanying drawing 4 expression high bands one splitter G1 is connected to output 5 through microstrip coupled line 8, and microstrip coupled line 9 one ends are through resistance R 2 ground connection, another termination branch end 6.
Accompanying drawing 8,9 expression low-frequency ranges two splitter D2 are made up of one one splitter and a distributor, wherein the transmission coil of the high frequency magnetic core line transformer 7 of a splitter and coupling coil are altogether on same flat two hole magnetic cores, coupling coil one end is through mutual capacitor C 1, resistance R 1 ground connection in parallel, termination distributor in addition; Wherein the matched coil in the distributor 10 with distribute coil 11 respectively on two diplopore magnetic cores, distribute 11 liang of end span resistance R 2 of coil connect branch end 3,3 ';
Accompanying drawing 12,13 expression low-frequency ranges three splitter D3, form by one one splitter, an one-level distributor and two secondary splitters, wherein the transmission coil of the high frequency magnetic core line transformer 7 of a splitter and coupling coil are altogether on same flat two hole magnetic cores, coupling coil one end is through mutual capacitor C 1, resistance R 1 ground connection in parallel, termination one-level distributor in addition; The matched coil 10 of one-level distributor and distribution coil 11 are respectively on two diplopore magnetic cores; Connect respectively after 11 liang of end span resistance R 3 of the distribution coil of one-level distributor the matched coil 10 of two secondary splitters ', 10 "; The matched coil 11 of two secondary splitters ', 11 " with distribute coil 11 also respectively on two diplopore magnetic cores; Resistance R 3 ' connect with the distribution coil 11 " resistance R 3 is all striden at two ends " of another secondary splitter is all striden at the distribution coil 11 ' two ends of one of them secondary splitter, series connection point connect second branch end 3 '; The distribution coil 11 of two secondary splitters ', 11 " in addition end connect respectively first branch end 3, the 3rd branch end 3 ";
The input 4 of accompanying drawing 14 expression high bands three splitter G3 is connected to output 5 through microstrip coupled line 8; Microstrip coupled line 9 one ends are through resistance R 2 ground connection, the other end by an one-level microstrip power divider 12 after, again through two secondary microstrip power dividers 12 ', 12 " after, be divided into three branch end 6,6 ', 6 " outputs; Described microstrip power divider 12,12 ', 12 " band of opening is arranged in the middle of being, opening part has resistance R 4, R4 ', R4 " cross-over connection.
15 1 kinds of frequency division segmentations of accompanying drawing broadband, four splitters, two four branch circuit D4 of 5MHz～860MHz low-frequency range and 950MHz～2050MHz high band are housed in its splitter housing, G4, the input 1 of low-frequency range four branch circuit D4 wherein, output 2, first branch end 3, second branch end 3 ', the 3rd branch end 3 " with the 4th branch end 3 " ' be connected respectively and import duplexer LC1, output duplexer LC2 and the one or more duplexer LC3 of branch, LC3 ', LC3 "; LC3 " ' low pass filter port L separately, the input 4 of high band four branch circuit G4, output 5, first branch end 6, second branch end 6 ', the 3rd branch end 6 " and the 4th branch end 6 " ' also respectively with above-mentioned duplexer LC1, LC2, LC3, LC3 ', the high pass filter port H of LC3 "; LC3 " ' is corresponding to link to each other; Described input duplexer LC1 has a signal input IN, output duplexer LC2 has a signal output OUT, the duplexer LC3 of branch, LC3 ', LC3 ", LC3 " ' the have first signal branch mouth BR, secondary signal bifurcations BR ', the 3rd signal branch mouth BR ", the 4th signal branch mouth BR " '.
Accompanying drawing 16,17 is low-frequency range four splitter D4, form by one one splitter, an one-level distributor and two secondary splitters, wherein the transmission coil of the high frequency magnetic core line transformer 7 of a splitter and coupling coil are altogether on same flat two hole magnetic cores, coupling coil one end is through mutual capacitor C 1, resistance R 1 ground connection in parallel, termination one-level distributor in addition; The matched coil 10 of one-level distributor and distribution coil 11 are respectively on two diplopore magnetic cores; Connect respectively after 11 liang of end span resistance R 3 of the distribution coil of one-level distributor the matched coil 10 of two secondary splitters ', 10 "; The matched coil 11 of two secondary splitters ', 11 " with distribute coil 11 also respectively on two diplopore magnetic cores; The distribution coil 11 ' two ends of two secondary splitters all stride resistance R 3 ' after, connect respectively first branch end 3, second branch end 3 ', the 3rd branch end 3 ", the 4th branch end 3 " ';
Accompanying drawing 18 is that the input 4 of high band four splitter G4 is connected to output 5 through microstrip coupled line 8; Microstrip coupled line 9 one ends are through resistance R 2 ground connection, the other end by an one-level microstrip power divider 12 after, again through two secondary microstrip power dividers 12 ', 12 " after, be divided into four branch end 6,6 ', 6 ", 6 " ' output; Described microstrip power divider 12,12 ', 12 " band of opening is arranged in the middle of being, opening part has resistance R 4, R4 ', R4 " cross-over connection.
Claims (6)
1. frequency division segmentation broadband splitter, it is characterized in that: two the one branch circuit (D1 that 5MHz～860MHz low-frequency range and 950MHz～2050MHz high band is housed in the housing, G1), the input (1) of low-frequency range one branch circuit (D1) wherein, output (2) is connected input duplexer (LC1) respectively with branch end (3), output duplexer (LC2) and branch's duplexer (LC3) low pass filter port (L) separately, the input (4) of high band one branch circuit (G1), output (5) and branch end (6) also respectively with above-mentioned duplexer (LC1, LC2, LC3) high pass filter port (H) is corresponding to link to each other; Described input duplexer (LC1) has a signal input (IN), and output duplexer (LC2) has a signal output (OUT), and branch's duplexer (LC3) has signal branch mouth (BR); The input (4) of one branch circuit (G1) of described high band is connected to output (5) through microstrip coupled line (8), and microstrip coupled line (9) one ends are through resistance (R2) ground connection, another termination branch end (6).
2. frequency division segmentation broadband splitter, it is characterized in that: two two branch circuits (D2, G2) of 5MHz～860MHz low-frequency range and 950MHz～2050MHz high band are housed in the housing, and wherein the input (1) of low-frequency range two branch circuit (D2), output (2) and two branch end (3,3 ') are connected input duplexer (LC1), output duplexer (LC2) and two branch's duplexers (LC3, LC3 ') low pass filter port (L) separately respectively; The input (4) of high band two branch circuit (G2), output (5) and branch end (6,6 ') also respectively with corresponding linking to each other of high pass filter port (H) of above-mentioned duplexer (LC1, LC2, LC3, LC3 '); Described input duplexer (LC1) has a signal input (IN), and output duplexer (LC2) has a signal output (OUT), and branch's duplexer (LC3, LC3 ') has signal branch mouth (BR, BR '); The input (4) of the two branch circuit of described high band (G2) is connected to output (5) through microstrip coupled line (8); Microstrip coupled line (9) one ends are through resistance (R2) ground connection, and the other end is divided into two branch end (6,6 ') output by behind the microstrip power divider (12).
3. frequency division segmentation broadband splitter, it is characterized in that: two the three branch circuit (D3 that 5MHz～860MHz low-frequency range and 950MHz～2050MHz high band is housed in the housing, G3), the input (1) of low-frequency range three branch circuits (D3) wherein, output (2) and branch end (3,3 ', 3 ") connect input duplexer (LC1) respectively; output duplexer (LC2) and three branch's duplexers (LC3; LC3 '; LC3 ",) separately low pass filter port (L), the input (4) of high band three branch circuits (G3), output (5) and branch end (6,6 ', 6 ") also (the high pass filter port (H) of LC1; LC2; LC3; LC3 '; LC3 ") is corresponding to link to each other with above-mentioned duplexer respectively; Described input duplexer (LC1) has a signal input (IN), and output duplexer (LC2) has a signal output (OUT), and (LC 3, LC3 ', LC3 ") have signal branch mouth (BR, BR ', BR ") to branch's duplexer; The input (4) of described high band three branch circuits (G3) is connected to output (5) through microstrip coupled line (8); Microstrip coupled line (9) one ends are through resistance (R2) ground connection, and the other end is by behind the one-level microstrip power divider (12), again through two secondary microstrip power dividers (12 ', 12 ") are divided into three branch end (6,6 ', 6 ") output.
4. frequency division segmentation broadband splitter, it is characterized in that: two the four branch circuit (D4 that 5MHz～860MHz low-frequency range and 950MHz～2050MHz high band is housed in the housing, G4), the input (1) of low-frequency range four branch circuits (D4) wherein, output (2) and branch end (3,3 ', 3 "; 3 ) connect input duplexer (LC1) respectively; output duplexer (LC2) and four branch's duplexers (LC 3; LC3 '; LC3 ", LC3 ) low pass filter port (L) separately, the input (4) of high band four branch circuits (G4), output (5) and branch end (6,6 ', 6 "; 6 ) also respectively with above-mentioned duplexer (LC1; LC2; LC3; LC3 '; LC3 ", LC3 ) high pass filter port (H) is corresponding to link to each other; Described input duplexer (LC1) has a signal input (IN), and output duplexer (LC2) has a signal output (OUT), and branch's duplexer (LC3, LC3 ', LC3 ", LC3 ) has signal branch mouth (BR, BR ', BR ", BR ); The input (4) of described high band four branch circuits (G4) is connected to output (5) through microstrip coupled line (8); Microstrip coupled line (9) one ends are through resistance (R2) ground connection, and the other end is by behind the one-level microstrip power divider (12), again through two secondary microstrip power dividers (12 ', 12 ") be divided into four branch end (6,6 ', 6 ", 6 ) output.
5. frequency division segmentation according to claim 4 broadband splitter, its feature also is: high pass filter that described input duplexer (LC1), output duplexer (LC2) and branch's duplexer (LC1, LC2, LC3, LC3 ', LC3 ", LC3 ) all are made up of printed inductor and SMT mounted on surface electric capacity and low pass filter and three port devices that are unified into.
6. frequency division segmentation according to claim 4 broadband splitter, its feature also is: described one-level microstrip power divider and secondary microstrip power divider (12,12 ', 12 ") have the band of opening in the middle of all being, opening part has resistance (R4, R4 ', R4 ") cross-over connection respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200632064U CN201048432Y (en) | 2007-05-14 | 2007-05-14 | Frequency-division section type broadband branching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200632064U CN201048432Y (en) | 2007-05-14 | 2007-05-14 | Frequency-division section type broadband branching device |
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| CN201048432Y true CN201048432Y (en) | 2008-04-16 |
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| CNU2007200632064U Expired - Fee Related CN201048432Y (en) | 2007-05-14 | 2007-05-14 | Frequency-division section type broadband branching device |
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| BE1024574B1 (en) * | 2016-03-09 | 2018-04-17 | Technetix B.V. | Device for a cable network |
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