CN203775329U - Modularized mixing circuit with multiple independently-controlled paths - Google Patents
Modularized mixing circuit with multiple independently-controlled paths Download PDFInfo
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- CN203775329U CN203775329U CN201420053496.4U CN201420053496U CN203775329U CN 203775329 U CN203775329 U CN 203775329U CN 201420053496 U CN201420053496 U CN 201420053496U CN 203775329 U CN203775329 U CN 203775329U
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- 238000002955 isolation Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 241000272190 Falco peregrinus Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- FWZLYKYJQSQEPN-SKLAJPBESA-N peregrine Chemical compound OC1[C@H]2[C@@H]3C4([C@@H]5C6OC(C)=O)C(OC)CC[C@@]5(C)CN(CC)[C@H]4C6[C@@]2(OC)C[C@H](OC)[C@H]1C3 FWZLYKYJQSQEPN-SKLAJPBESA-N 0.000 description 1
- FWZLYKYJQSQEPN-UHFFFAOYSA-N peregrine Natural products OC1C2C3C4(C5C6OC(C)=O)C(OC)CCC5(C)CN(CC)C4C6C2(OC)CC(OC)C1C3 FWZLYKYJQSQEPN-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model provides a modularized mixing circuit with multiple independently-controlled paths. The modularized mixing circuit comprises one or multiple signal mixing module(s), each signal mixing module comprises a four-in-one mixer, the input ends of the four-in-one mixer are respectively connected with four electrical switches, and the input ends of the electrical switches are respectively connected with different paths of input signals; the output end of the four-in-one mixer is connected with a first attenuator, the first attenuator is connected with a radiofrequency amplifier, and the radiofrequency amplifier is connected with a second attenuator; and on/off of the electrical switches are controlled by control signals of a microcontroller. The electrical switches are all two-stage cascading electric-control switches. Further, each electrical switch is formed by cascading a PE4283 electric-control switch k1 and a PE4283 electric-control switch k2. The modularized mixing circuit is high in isolation degree, can be cooperated and connected with the microprocessor in work, can realize remote control, and can be applied to the network of cable television, and the paths can be independently controlled.
Description
Technical field
The utility model relates to TV signal hybrid circuit, the hybrid circuit that especially a kind of modular multichannel is independently controlled.
Background technology
Television signal mixer is that the radiofrequency signal of different frequencies more than two covers is mixed and forms the device that a radiofrequency signal multi-channel programme of having a lot of social connections band is exported.Television signal mixer is the special-purpose mixing equipment for the design of cable TV multichannel adjacent frequency front end system, for adjacent frequency wideband transmission system.
Cable TV signal hybrid circuit must possess good isolation and operability easily, so that a certain passage while breaking down, can conveniently turn-off.Existing hybrid circuit automaticity is not high, while breaking down, need attendant to arrive on-the-spot manual operation and turn-off, can not with controller cooperating.
Summary of the invention
The hybrid circuit that provides a kind of modular multichannel independently to control is provided the purpose of this utility model, there is mutual isolation high, can with the microprocessor work that is connected, can realize Long-distance Control, the feature such as each passage is can be independently controlled is applicable to being applied to cable TV network very much.The technical solution adopted in the utility model is:
The hybrid circuit that a kind of modular multichannel is independently controlled, comprise one or more signal mixing module unit, each signal mixing module unit comprises four blenders, and each input of four blenders connects respectively four electric switches, and the input of each electric switch is Jie Ge road input signal respectively; Output termination first attenuator of four blenders, the first attenuator connects radio frequency amplifier, and radio frequency amplifier connects the second attenuator; Each electric switch can be controlled by the control signal of microcontroller and conducting or shutoff.
Further, the electric-controlled switch that described electric switch is two-stage cascade.
Further, described electric switch is PE4283 by two models electric-controlled switch k1 and k2 cascade form.
Further, electric-controlled switch k1 and k2 include first end, the second end, common port and control end; The common port of electric-controlled switch k1 is as the input termination input signal of electric switch, the common port of the second termination electric-controlled switch k2 of electric-controlled switch k1, and the second end of electric-controlled switch k2 connects the input of four blenders; Electric-controlled switch k1 and k2 control end all connect the control signal of microcontroller.
Further, the first attenuator and the second attenuator are adjustable attenuator.
The utility model has the advantage of:
1) every paths is independently controlled, and can carry out single channel shutoff, with convenient for maintaining when certain paths breaks down.
2) control signal that electric switch can be sent by microcontroller is controlled conducting or shutoff, is convenient to connect to form with microcontroller the signal mixture control that automaticity is higher.
3) every paths adopts the design of two-stage electric-controlled switch, can effectively increase shutoff degree, reduces and disturbs.
4) the phase mutual interference that four tunnel outputs are inputted on Shi Liu road can be effectively eliminated in modular design.
Accompanying drawing explanation
Fig. 1 is signal mixing module of the present utility model unit electrical schematic diagram.
Fig. 2 is electric-controlled switch cascade schematic diagram of the present utility model.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in Figure 1:
The hybrid circuit that the modular multichannel that the utility model proposes is independently controlled, comprise that four signal mixing module unit (certainly, as required, also can only include a signal mixing module unit or according to the quantity of client's real needs configuration signal mixing module unit), each signal mixing module unit comprises four blenders 1, each input of four blenders 1 connects respectively four electric switches 2, and the input of each electric switch 2 is Jie Ge road input signal respectively; Output termination first attenuator 3, the first attenuators 3 of four blenders 1 connect radio frequency amplifier 4, and radio frequency amplifier 4 connects the second attenuator 5; Each electric switch 2 can be controlled by the control signal of microcontroller and conducting or shutoff.The first attenuator 3 and the second attenuator 5 all can adopt adjustable attenuator.
Each Jiang Si road, signal mixing module unit signal return passage is mixed into a road output, and input signal arrives output through electric switch 2, four blenders 1, the first attenuator 3, radio frequency amplifier 4 and the second attenuator 5.Four blenders 1 of coil coupling formula effectively Jiang Si road signal are mixed into a road radiofrequency signal.The collocation of radio frequency amplifier and two attenuators can effectively meet different clients for the demand of gain.
Modularity design Jiang Shi six tunnel input Yu Si road outputs are divided into four groups, and every group of design becomes the signal mixing module unit that a road output is inputted on four tunnels.Each Zhong Si road, signal mixing module unit return path is all independent controlled, can occur by control signal, corresponding failure passage being turn-offed to operation under abnormal conditions at certain paths or signal, other passage is normally worked, on problem, place under repair to attendant's enough time and do not affect the unimpeded of signal on other passage.Control signal can be sent by microcontrollers such as single-chip microcomputers, is the digital signal of high and low level composition.The utility model focuses on introducing hybrid circuit, therefore the control sections such as single-chip microcomputer do not draw in Fig. 1.
Shutoff degree while turn-offing in order effectively to increase, electric switch 2 adopts the electric-controlled switch of two-stage cascade.Particularly, in this example, as shown in Figure 2, electric-controlled switch k1 and k2 cascade that electric switch 2 is PE4283 by two models form.Electric-controlled switch k1 and k2 adopt the PE4283 of Peregrine Semiconductor company, have advantages of that insertion loss is little, isolation is high.PE4283 inside comprises two switches, and pin comprises first end RF1, the second end RF2, common port RFC and control end V1, V2.Under single pin control logic pattern, CMOS high level (can be provided by microcontroller) is provided control end V2, and during control end V1 input high level, common port RFC is communicated with first end RF1, and during control end V2 input low level, common port RFC is communicated with the second end RF2.Electric-controlled switch k1 and k2 annexation are: the common port of electric-controlled switch k1 is as the input termination input signal of electric switch 2, the common port of the second termination electric-controlled switch k2 of electric-controlled switch k1, and the second end of electric-controlled switch k2 connects the input of four blenders 1; Electric-controlled switch k1 and k2 control end V1, V2 all connect the control signal of microcontroller.The first end RF1 of electric-controlled switch k1 and k2 is unsettled.As long as outputing to the control signal of electric-controlled switch k1 and k2 control end V2, microcontroller changes simultaneously, just can control common port in electric-controlled switch k1 and k2 to the conducting simultaneously of the switch between the second end or close simultaneously, thereby the electric switch of cascade just works together as same independent electric switch, and isolation when electric switch turn-offs increases greatly.
Shutoff degree when synchronous controlled cascade electric switch can better increase radio-frequency channel shutoff, eliminates the impact on signal on other normal service aisle.Simultaneously modular design can effectively shield the phase mutual interference between the input signal of Shi Liu road, the interference of control signal to radiofrequency signal on control circuit, and the multiple interference such as power supply noise, is guaranteed the output-index of the hybrid circuit that multichannel independently controls.
Claims (5)
1. the hybrid circuit that modular multichannel is independently controlled, it is characterized in that, comprise one or more signal mixing module unit, each signal mixing module unit comprises four blenders (1), each input of four blenders (1) connects respectively four electric switches (2), and the input of each electric switch (2) is Jie Ge road input signal respectively; Output termination first attenuator (3) of four blenders (1), the first attenuator (3) connects radio frequency amplifier (4), and radio frequency amplifier (4) connects the second attenuator (5);
Each electric switch (2) can be controlled by the control signal of microcontroller and conducting or shutoff.
2. the hybrid circuit that modular multichannel as claimed in claim 1 is independently controlled, is characterized in that: described electric switch (2) is the electric-controlled switch of two-stage cascade.
3. the hybrid circuit that modular multichannel as claimed in claim 2 is independently controlled, is characterized in that:
Electric-controlled switch k1 and k2 cascade that described electric switch (2) is PE4283 by two models form.
4. the hybrid circuit that modular multichannel as claimed in claim 3 is independently controlled, is characterized in that:
Electric-controlled switch k1 and k2 include first end, the second end, common port and control end; The common port of electric-controlled switch k1 is as the input termination input signal of electric switch (2), the common port of the second termination electric-controlled switch k2 of electric-controlled switch k1, and the second end of electric-controlled switch k2 connects the input of four blenders (1); The control end of electric-controlled switch k1 and k2 all connects the control signal of microcontroller.
5. the hybrid circuit that the modular multichannel as described in any one in claim 1～4 is independently controlled, is characterized in that: the first attenuator (3) and the second attenuator (5) are adjustable attenuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420053496.4U CN203775329U (en) | 2014-01-27 | 2014-01-27 | Modularized mixing circuit with multiple independently-controlled paths |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420053496.4U CN203775329U (en) | 2014-01-27 | 2014-01-27 | Modularized mixing circuit with multiple independently-controlled paths |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203775329U true CN203775329U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420053496.4U Expired - Lifetime CN203775329U (en) | 2014-01-27 | 2014-01-27 | Modularized mixing circuit with multiple independently-controlled paths |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106850089A (en) * | 2017-01-12 | 2017-06-13 | 普联技术有限公司 | The system and method for the emitting performance of detection signal transmitting equipment |
-
2014
- 2014-01-27 CN CN201420053496.4U patent/CN203775329U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106850089A (en) * | 2017-01-12 | 2017-06-13 | 普联技术有限公司 | The system and method for the emitting performance of detection signal transmitting equipment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |
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| CX01 | Expiry of patent term |