CN102752179A - Radio frequency signal and CATV (Community Antenna Television) signal hybrid distribution device, and method for device - Google Patents
Radio frequency signal and CATV (Community Antenna Television) signal hybrid distribution device, and method for device Download PDFInfo
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Abstract
The invention discloses a radio frequency signal and CATV (Community Antenna Television) signal hybrid distribution device, and a method for the radio frequency signal and CATV signal hybrid distribution device. According to the invention, the radio frequency signal and the CATV signal hybrid distribution device comprises multiple input ends, at least one microstrip distributor, a CATV low-frequency distributor and multiple microstrip combiners. One of the multiple input ends is a CATV signal input end, and the others are radio frequency signal input ends; and the CATV signal input end is coupled with the CATV low-frequency distributor, and the radio frequency signal input end is coupled with the corresponding microstrip distributor. According to the invention, by changing the conventional hybrid distribution mode of combining before separating, a mode of separating multiple paths of signals before combining the signals is used; and moreover, the internal circuits of the combiners are reformed, and microstrip lines are used for forming inductors, so that low-loss and high-isolation signal transmission of a Cable &Wi-Fi (Wireless Fidelity) system is realized.
Description
Technical field
The present invention relates to signal transport communication field, more specifically, relate to the devices and methods therefor of the mixed allocation of a kind of MIMO (multiple-input and multiple-output (Multiple-Input Multiple-Out-put)) radiofrequency signal and CATV signal.
Background technology
MIMO representes multiple-input and multiple-output.In the 4th third-generation mobile communication technical standard, extensively adopted IEEE 802.16e (Wimax) for example, Long Term Evolution (LTE).In new generation of wireless local area network (LAN) (WLAN) standard, be generally used for IEEE802.11n, but also can be used for other 802.11 technology.MIMO is known as space diversity sometimes, because it uses multiple spatial channel to transmit and receives data, could dispose MIMO when having only website (mobile device) or access point (AP) to support MIMO.
Cable Wi-Fi is the radiofrequency signal of Wi-Fi through existing C ATV cable television system; Through the mixer and the splitter low-loss ground of special use, height arrives different coaxial cable the insides with CATV signal mixed allocation isolator, is transferred to low-loss in user's the room; Realize the green in the room; High-quality WLAN signal covers, and reliable and real operable fast wireless network are provided, and Cable Wi-Fi system makes the MIMO technology of 802.11n wireless network utilize with succeeding.
Through retrieval to prior art, technology that radiofrequency signal and CATV signal are mixed and divide equally has appearred, and for example Chinese publication application number is 200820057754, and denomination of invention is " based on the CATV integrated access system of Wi-Fi technology "; China's publication application number 201020695164; Denomination of invention is " broadband network system of a kind of hyperfrequency " etc.; The basic structure of the circuit of above-mentioned publication radiofrequency signal and CATV signal is as shown in Figure 1; The AP that has the broadband internet interface is installed in the light current well, after closing the CATV signal mixing after distributor amplifies the CATV amplifier, is divided into several paths again, be transferred in the resident family through original coaxial cable again; What transmit in the cable from branch's mixer to resident family is the radiofrequency signal of 5MHz-1GHz and 2.4-2.5GHz; In this section transmission channel, if having the parts that the parts such as distributor or amplifier of low-frequency range just need be replaced by wideband 5MHz-2.5GHz, otherwise the Wi-Fi signal just produces decay very seriously.When broadband signal has arrived in the resident family; In general most family all has parlor and several bedroom; The CATV distributor of originally necessarily being furnished with low frequency; In the engineering of transforming, must be replaced with the 5MHz-2.5GHz wide-frequency distributor to the CATV distributor of low frequency, last step is to be replaced with the C&Wi-Fi Terminal panel that inside has specialized circuitry to the panel of inserting television set on resident's wall; The CATV signal just can be separated with the Wi-Fi signal effectively like this, and is distributed to each room equably.The synthetic distributor schematic diagram of prior art is as shown in Figure 2; Schematic diagram by Fig. 2 can be found out; What this scheme adopted is to close the road to Wi-Fi and CATV signal earlier; Separate with one minute eight wideband splitter then, close the road earlier, and then carry out shunt with the wideband splitter and this prior art adopts.Wide-frequency distributor will be done decay get off with being difficult to from 5M to 2.5G.Though mixer is less than 1DB, eight distributor Insertion Loss are greater than more than the 15DB, and flatness is difficult to meet the demands, and the workload of producing debugging is also big a lot.The wideband splitter of mixer and one minute eight is owing to adopt and be fit to realizing like lumped parameter devices such as magnet rings of low-frequency channel; Cause for the Wi-Fi signal that works in 2.4GHZ; Decay is just big in the extreme; Product performance index just is difficult to satisfy instructions for use, and Wi-Fi signal and the mutual isolation of CATV signal are also poor.
The main at present problem that exists of Cable&Wi-Fi system: to existing C ATV network, the branching ratio of coaxial cable is more, and the long Wi-Fi signal attenuation to 2.4GHZ of cable is bigger; As client cellphone subscriber particularly, as the iPHONE cellphone subscriber, in design owing to consider the life-span of battery and to health effects; The Wi-Fi signal is far smaller than the transmission power level of AP; Actual emission power is less than 1/10 of AP, and when the Wi-Fi signal of mobile phone emission passed back to AP through catv network, signal had been attenuated very faintly; Basically be submerged in the noise the inside; Because wireless network is when receiving and dispatching the transmission data, the speed of data is directly proportional with the signal to noise ratio of transmitting-receiving two-end and is listed as relation, under the condition of low signal-to-noise ratio, is difficult to realize high speed communication like this.So improve the received signal to noise ratio of AP and client simultaneously and be the subject matter that present Cable&Wi-Fi system need solve.The problem of second needs solution is: the problem that Wi-Fi signal and CATV signal are isolated each other.
By on can know the construction of Cable&Wi-Fi system, what at first need solve is the low-loss of Wi-Fi signal, height is incorporated into the coaxial cable the inside to CATV signal and Wi-Fi isolator.
Summary of the invention
For solving the above-mentioned defective of prior art, the present invention has designed a kind of radiofrequency signal and high mixed allocation devices and methods therefor of isolating of CATV signal low-loss based on MIMO.This technology is on the one hand through changing the mixed allocation pattern that traditional closing earlier afterwards divides; Employing divides earlier the mode of afterwards closing to multiple signals; Transform through internal circuit on the other hand mixer; Constitute inductance with microstrip line, thus good realization the low-loss of Cable&Wi-Fi system, the high signal transmission of isolating.
According to an aspect of the present invention, the mixed allocation device of a kind of radiofrequency signal and CATV signal is provided, this mixed allocation device comprises a plurality of inputs, at least one little Tape dispensers, a CATV low frequency distributor and a plurality of little band mixer; One in wherein a plurality of inputs is the CATV signal input part, and remaining is a RF signal input end, said CATV signal input part and the coupling of said CATV low frequency distributor, said RF signal input end and corresponding little Tape dispensers coupling; The quantity N of the shunting sign that at least one little Tape dispensers is total equals the quantity N of CATV low frequency distributor shunting sign, and the quantity of said shunting sign equals the quantity N of mixer; And the quantity N of said shunting sign satisfies following formula: N=2
n(n=2,3,4 ...).The signal of coming in from each RF signal input end; Through corresponding little Tape dispensers; Distribute an input port that afterwards is transferred to corresponding little band mixer earlier; Be transferred to the another one input port of corresponding little band mixer after the signal that the CATV signal input part is come in also distributes through CATV low frequency distributor, export after radiofrequency signal after distributing through little band mixer handle at last and CATV signal close the road.
Wherein, said little Tape dispensers can be divided equally the radiofrequency signal that gets into or be distributed into N road signal by a certain percentage; Said CATV low frequency distributor can be divided equally the CATV signal or be distributed into N road signal by a certain percentage.
Wherein, said a plurality of input is three inputs; Said at least one little Tape dispensers is two little four distributors of being with; Said CATV low frequency distributor is CATV low frequency eight distributors; Said little band mixer is eight little band mixers.
Wherein said a plurality of input is three inputs; Said at least one little Tape dispensers is two little two distributors of being with; Said CATV low frequency distributor is CATV low frequency four distributors; Said a plurality of little band mixer is four little band mixers.
Wherein said a plurality of input is five inputs; Said at least one little Tape dispensers is four little two distributors of being with; Said CATV low frequency distributor is CATV low frequency eight distributors; Said a plurality of little band mixer is eight little band mixers.
Wherein said a plurality of input is two inputs; Said at least one little Tape dispensers is little two distributors of being with; Said CATV low frequency distributor is CATV low frequency four distributors; Said a plurality of little band mixer is four little band mixers.
Wherein said little band mixer comprises first series via and second series via that inserts the CATV signal of incoming radio frequency signal; Wherein first series via comprises the electric capacity of at least two series connection; Each electric capacity along receiving side signal to positive terminal connect one group of series circuit; This series circuit is made up of microstrip line and electric capacity; The positive terminal of the electric capacity in one end of this series circuit and the corresponding series via is connected other end ground connection; Three groups of parallel circuitss are connected respectively in this second series via, and wherein each parallel circuits constitutes by electric capacity is parallelly connected with microstrip line, and the two ends of first group of parallel circuits connect an end of capacitor C 4, capacitor C 5 respectively, the other end ground connection of capacitor C 4, capacitor C 5; Second group of parallel circuits along receiving side signal to positive terminal connect an end of capacitor C 6, the other end ground connection of capacitor C 6; The 3rd group of parallel circuits along receiving side signal to negative pole end connect capacitor C 7, the other end ground connection of capacitor C 7; Microstrip line M1, M5 connect respectively for the leading portion of the series circuit of forming at three groups of parallel circuitss simultaneously, and rear end.
Wherein, the electric capacity of said at least two series connection is 4.Wherein said electric capacity is patch capacitor.
Wherein, said mixed allocation device also comprises power amplifier, and said power amplifier is arranged on before at least one radiofrequency signal input port of little band mixer.
Said device further comprises and said a plurality of input, at least one little Tape dispensers and low frequency distributor between little band mixer of reverse use; Be used to receive the mixed signal of 5M, from said mixed signal, to isolate CATV signal and Wi-Fi signal to CATV and the Wi-Fi of 2.5G.
According to a further aspect in the invention; The method of a kind of radiofrequency signal and CATV signal mixed allocation has been proposed; This method adopts above-mentioned radiofrequency signal and CATV signal mixed allocation device, and this method may further comprise the steps: little Tape dispensers is at first passed through with radiofrequency signal in (1), is transferred to an input port of corresponding little band mixer after distributing; Simultaneously, after being distributed through CATV low frequency distributor, the CATV signal is transferred to the another one input port of corresponding little band mixer; (2) however export after closing the road to the radiofrequency signal after distributing and CATV signal through little band mixer.
The present invention divides the method for afterwards closing earlier through adopting to multiple signals, and the internal circuit of mixer is transformed, and constitutes inductance with microstrip line, has realized the low-loss of Cable&Wi-Fi system, the high signal transmission of isolating.
Description of drawings
Fig. 1 is the basic structure of the circuit of radiofrequency signal and CATV signal in the prior art;
Fig. 2 is the synthetic distributor schematic diagram of prior art in the prior art;
Fig. 3 is according to the radiofrequency signal of first embodiment of the invention and CATV signal mixed allocation device;
Fig. 4 is according to the radiofrequency signal of second embodiment of the invention and CATV signal mixed allocation device;
Fig. 5 is according to the radiofrequency signal of third embodiment of the invention and CATV signal mixed allocation device;
Fig. 6 is according to the radiofrequency signal of fourth embodiment of the invention and CATV signal mixed allocation device;
Fig. 7 is the circuit theory diagrams of little band mixer of the present invention;
Fig. 8 is the circuit theory diagrams of CATV four distributors (that is, splitter or splitter);
Fig. 9 is the circuit theory diagrams of Wi-Fi four distributors (that is, splitter or splitter);
Figure 10 is after CATV and Wi-Fi mixed signal at first occurring, with little band mixer anti-the circuit theory diagrams that use as splitter.
As shown in the figure; In order clearly to realize the structure of embodiments of the invention, marked specific structure and device in the drawings, but this is merely the signal needs; Be not that intention is limited to the present invention in this ad hoc structure, device and the environment; According to concrete needs, those of ordinary skill in the art can adjust these devices and environment or revise, and adjustment of being carried out or modification still are included in the scope of accompanying Claim.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment a kind of radiofrequency signal provided by the invention and the high mixed allocation of isolating of CATV signal low-loss are described in detail.Here do simultaneously is that more detailed in order to make embodiment, following embodiment be the best, preferred embodiment, also can adopt other alternative and implements for some known technology those skilled in the art with explanation; And accompanying drawing part only is in order to describe embodiment more specifically, and is not intended to the present invention is carried out concrete qualification.
In general implementation example of the present invention, this radiofrequency signal and CATV signal mixed allocation device comprise a plurality of inputs, at least one little Tape dispensers, a CATV low frequency distributor and a plurality of little band mixer; One in wherein a plurality of inputs is the CATV signal input part, and remaining is a RF signal input end, said CATV signal input part and the coupling of said CATV low frequency distributor, said RF signal input end and corresponding said little Tape dispensers coupling; The quantity N of the shunting sign that at least one little Tape dispensers is total equals the quantity N of CATV low frequency distributor shunting sign, and the quantity of said shunting sign equals the quantity N of mixer; And the quantity N of said shunting sign satisfies following formula: N=2
n(n=2,3,4 ...).The signal of wherein coming in from each RF signal input end; Through corresponding said little Tape dispensers; Distribute an input port that afterwards is transferred to corresponding little band mixer earlier; Be transferred to the another one input port of corresponding little band mixer after the signal that the CATV signal input part is come in also distributes through CATV low frequency distributor, export after radiofrequency signal after distributing through said little band mixer handle at last and CATV signal close the road.
[embodiment 1]
The radiofrequency signal of first preferred embodiment of the invention and CATV signal mixed allocation device are as shown in Figure 3.This mixed allocation device comprises three inputs, two little four distributors, CATV low frequency eight distributors and eight little band mixers be with.Two little is the distributors that are made up of little band that work in 2.4GHZ-2.5GHZ with four distributors, and the difference of itself and conventional distributor is to adopt microstrip line to constitute inductance, and is as shown in Figure 9; The distributor that the magnet ring of using in CATV low frequency eight distributors and the traditional C ATV system constitutes is consistent.Little band mixer of Wi-Fi and CATV can adopt the microstrip circuit of computer-aided design to constitute.Saidly littlely can the radiofrequency signal that get into be divided equally or distributed by a certain percentage with four distributors; Said CATV low frequency eight distributors can be divided equally the CATV signal or distribution by a certain percentage.
Wherein first, second input is that radiofrequency signal (Wi-Fi) input, the 3rd input are the CATV signal input part.First, second little four distributors and first, second input be with is coupled respectively, thus received RF signal, and radiofrequency signal is divided into octuple altogether.Simultaneously, CATV low frequency eight distributors and the coupling of the 3rd input, thus receive the CATV signal, and the CATV signal is divided into octuple.In use; Its operation principle is: the signal that each is come in from RF signal input end; Through corresponding little four distributors of being with, carry out being transferred to after low-loss ground distributes an input port of corresponding little band mixer, the signal that the CATV input is come in also carries out being transferred to after low-loss ground distributes the another one input port of corresponding little band mixer through CATV low frequency eight distributors; Carry out radiofrequency signal and CATV signal after distributing to export after the low-loss height closes the road isolator through little band mixer at last; Such benefit is: the wideband splitter of relative 5MHZ-2.5GHZ, and the frequency range of Wi-Fi and CATV signal shunt (that is, distributor or splitter) is much narrower relatively; The performance index of design just are easy to reach, and production cost also declines to a great extent.Wherein, alternatively, said mixed allocation device can also comprise power amplifier (not shown), and said power amplifier is arranged on before at least one radiofrequency signal input port of little band mixer.That is, radiofrequency signal (Wi-Fi) is carried out be transferred to before the input port of corresponding little band mixer after low-loss ground distributes, add power amplifier, to improve the receiving sensitivity of wi-fi signal at corresponding little four props of being with.
[embodiment 2]
The radiofrequency signal of second preferred embodiment of the invention and CATV signal mixed allocation device 1 are as shown in Figure 4.This mixed allocation device comprises three inputs, two little two distributors, CATV low frequency four distributors and four little band mixers be with.Two little is the distributors that are made up of little band that work in 2.4GHZ-2.5GHZ with two distributors, and the distributor that the magnet ring of using in CATV low frequency four distributors and the traditional C ATV system constitutes is consistent, and its circuit theory diagrams are as shown in Figure 8.Little band mixer of Wi-Fi and CATV can adopt the microstrip circuit of computer-aided design to constitute.Saidly littlely can the radiofrequency signal that get into be divided equally or distributed by a certain percentage with two distributors; Said CATV low frequency four distributors can be divided equally the CATV signal or distribution by a certain percentage.
Wherein first, second input is that radiofrequency signal (Wi-Fi) input, the 3rd input are the CATV signal input part.First, second little two distributors and first, second input be with is coupled respectively, thus received RF signal, and radiofrequency signal is divided into four the tunnel altogether.Simultaneously, CATV low frequency four distributors and the coupling of the 3rd input, thus receive the CATV signal, and the CATV signal is divided into four the tunnel.In use; Its operation principle is: the signal that each is come in from RF signal input end; Through corresponding little two distributors of being with; Carry out being transferred to after low-loss ground distributes an input port of corresponding little band mixer; The signal that the CATV input is come in also carries out being transferred to after low-loss ground distributes the another one input port of corresponding little band mixer through CATV low frequency four distributors, carry out radiofrequency signal and CATV signal after distributing to export after the low-loss height closes the road isolator through little band mixer at last.
[embodiment 3]
The radiofrequency signal of third preferred embodiment of the invention and CATV signal mixed allocation device are as shown in Figure 5.This mixed allocation device comprises five inputs, four little two distributors, CATV low frequency eight distributors and eight little band mixers be with.Four little is the distributors that are made up of little band that work in 2.4GHZ-2.5GHZ with two distributors, and its principle is identical with traditional high frequency distributor; The distributor that the magnet ring of using in CATV low frequency eight distributors and the traditional C ATV system constitutes is consistent.Little band mixer of Wi-Fi and CATV can adopt the microstrip circuit of computer-aided design to constitute.Saidly littlely can the radiofrequency signal that get into be divided equally or distributed by a certain percentage with two distributors; Said CATV low frequency eight distributors can be divided equally the CATV signal or distribution by a certain percentage.
Wherein first, second, third, fourth input is that radiofrequency signal (Wi-Fi) input, the 5th input are the CATV signal input part.First, second, third, fourth little two distributors and first, second, third, fourth input be with is coupled respectively, thus received RF signal.Simultaneously, CATV low frequency eight distributors and the coupling of the 5th input, thus receive the CATV signal.In use; Its operation principle is: the signal that each is come in from RF signal input end; Through corresponding little two distributors of being with; Carry out being transferred to after low-loss ground distributes an input port of corresponding little band mixer; The signal that the CATV input is come in also carries out being transferred to after low-loss ground distributes the another one input port of corresponding little band mixer through CATV low frequency eight distributors, carry out radiofrequency signal and CATV signal after distributing to export after the low-loss height closes the road isolator through little band mixer at last.
[embodiment 4]
The radiofrequency signal of four preferred embodiment of the invention and CATV signal mixed allocation device are as shown in Figure 6.This mixed allocation device comprises two inputs, little four props, CATV low frequency four props and four the little band mixers be with.Little is the distributors that are made up of little band that work in 2.4GHZ-2.5GHZ with four props, and its principle is identical with traditional high frequency distributor; The distributor that the magnet ring of using in CATV low frequency four distributors and the traditional C ATV system constitutes is consistent.Little band mixer of Wi-Fi and CATV can adopt the microstrip circuit of computer-aided design to constitute.Saidly littlely can the radiofrequency signal that get into be divided equally or distributed by a certain percentage with four props; Said CATV low frequency four props can be divided equally the CATV signal or distribution by a certain percentage.
Wherein first input end is that radiofrequency signal (Wi-Fi) input, second input are the CATV signal input part.Little four splitters and first input end be with is coupled, thus received RF signal.Simultaneously, CATV low frequency four splitters and the coupling of second input, thus receive the CATV signal.In use; Its operation principle is: the signal that each is come in from RF signal input end; Divide four props through corresponding little band; Carry out being transferred to after low-loss ground distributes an input port of corresponding little band mixer; The signal that the CATV input is come in also carries out being transferred to after low-loss ground distributes the another one input port of corresponding little band mixer through CATV low frequency four distributors, carry out radiofrequency signal and CATV signal after distributing to export after the low-loss height closes the road isolator through little band mixer at last.
Wherein, alternatively, said mixed allocation device also comprises power amplifier, and said power amplifier is arranged on before at least one radiofrequency signal input port of little band mixer.That is, before being transferred to an input port of corresponding little band mixer after corresponding little distribution, add power amplifier, to improve the receiving sensitivity of wi-fi signal with radiofrequency signal (Wi-Fi) being carried out low-loss with four props.Though only in the first, the 4th embodiment, added power amplifier, yet be to be understood that to those skilled in the art this power amplifier can be applied among each embodiment of the present invention.
[embodiment 5]
If when at first running into 5M to the Cable&Wi-Fi mixed signal of 2.5G, can be at first little band mixer anti-use as splitter, thereby obtain CATV and Wi-Fi two paths of signals, its schematic diagram is shown in figure 10.Of above embodiment then, carry out the distribution that elder generation divides the mode of afterwards closing to realize broadband signal again, its principle such as above-mentioned embodiment here will repeat no more.
The circuit theory diagrams of little band mixer of the preferred embodiment of the present invention are as shown in Figure 7.As above embodiment 1-embodiment 5 is said, an input port (first input port) incoming radio frequency signal of little band mixer, and the CATV signal is inserted in another one input port (second input port).This little band mixer comprises following components and parts.
Comprising four electric capacity that are connected in series (C8, C9, C10, C11) corresponding to the electric elements in first series via of incoming radio frequency signal; Each electric capacity along receiving side signal to positive terminal (anode) connect one group of series circuit; Thereby parallel connection four series circuits (M6, C12), (M7, C13), (M8, C14), (M9, C15) in whole series via; This series circuit is made up of microstrip line and electric capacity; The positive terminal of the electric capacity in one end of this series circuit and the corresponding series via is connected other end ground connection.
Comprising corresponding to the electric elements in second series via that inserts the CATV signal: three groups of parallel circuitss (C1, M2), (C2, M3) (C3, M4) are connected in series respectively; Wherein each parallel circuits constitutes by electric capacity is parallelly connected with microstrip line; The two ends of first group of parallel circuits connect the end of capacitor C 4, C5 respectively, the other end ground connection of capacitor C 4, C5; Second group of parallel circuits along receiving side signal to positive terminal (anode of C2) connect an end of capacitor C 6, the other end ground connection of capacitor C 6; The 3rd group of parallel circuits along receiving side signal to negative pole end (negative electrode of C3) connect capacitor C 7, the other end ground connection of capacitor C 7; The front end of the series circuit of forming at three groups of parallel circuitss simultaneously, and the rear end microstrip line (M1, M5) of connecting respectively.Terminal microstrip line (M5) thus export after the radiofrequency signal of terminal electric capacity (C11) output of output CATV signal and first series via is mixed.
Electric capacity in above-mentioned little band mixer is preferably patch capacitor; Simultaneously need to prove that here the electric elements of above-mentioned first series via are a kind of embodiment preferred; Only be to explain the principle of the preferred structure of this first series via; And be not intended to be limited to this; That is, series capacitance on first series via (C8, C9, C10, C11) and corresponding series circuit (M6, C12), (M7, C13), (M8, C14), (M9, C15) thereof also can wait by two groups, three groups, five groups and realize.
Adopt little band mixer of foregoing circuit structure; Owing to utilize microstripline as inductance; And can adopt the high frequency patch capacitor to form simultaneously, thus compare with original scheme, have following advantage: the performance parameter that 1, mainly is Insertion Loss and isolation etc. has been got well many than originally; 2, owing to the consistency of microstrip line, the consistency of production processing guarantees that easily cost performance is higher.
What should explain at last is; Above embodiment is only in order to describe technical scheme of the present invention rather than the present technique method is limited; The present invention can extend to other modification, variation, application and embodiment on using, and therefore thinks that all such modifications, variation, application, embodiment are in spirit of the present invention and teachings.
Claims (12)
1. mixed allocation device that is used for radiofrequency signal and CATV signal, this mixed allocation device comprises a plurality of inputs, at least one little Tape dispensers, a CATV low frequency distributor and a plurality of little band mixer; One in wherein a plurality of inputs is the CATV signal input part, and remaining is a RF signal input end, said CATV signal input part and the coupling of said CATV low frequency distributor, said RF signal input end and corresponding said little Tape dispensers coupling; The quantity N of the shunting sign that at least one little Tape dispensers is total equals the quantity N of CATV low frequency distributor shunting sign, and the quantity N of said shunting sign equals the quantity N of said little band mixer; And the quantity N of said shunting sign satisfies following formula:
N＝2
n(n＝2、3、4......)；
It is characterized in that:
The signal of coming in from each RF signal input end; Through corresponding said little Tape dispensers; Distribute an input port that afterwards is transferred to corresponding little band mixer earlier; Simultaneously, be transferred to the another one input port of corresponding little band mixer after the signal that the CATV signal input part is come in also distributes through CATV low frequency distributor, export after radiofrequency signal after distributing through said little band mixer handle at last and CATV signal close the road.
2. mixed allocation device according to claim 1 is characterized in that, said little Tape dispensers is divided equally the radiofrequency signal that receives or is distributed into N road signal by a certain percentage; Said CATV low frequency distributor is divided equally the CATV signal or is distributed into N road signal by a certain percentage.
3. mixed allocation device according to claim 1 is characterized in that, said a plurality of inputs are three inputs; Said at least one little Tape dispensers is two little four distributors of being with; Said CATV low frequency distributor is CATV low frequency eight distributors; Said little band mixer is eight little band mixers.
4. mixed allocation device according to claim 1 is characterized in that, said a plurality of inputs are three inputs; Said at least one little Tape dispensers is two little two distributors of being with; Said CATV low frequency distributor is CATV low frequency four distributors; Said a plurality of little band mixer is four little band mixers.
5. mixed allocation device according to claim 1 is characterized in that, said a plurality of inputs are five inputs; Said at least one little Tape dispensers is four little two distributors of being with; Said CATV low frequency distributor is CATV low frequency eight distributors; Said a plurality of little band mixer is eight little band mixers.
6. mixed allocation device according to claim 1 is characterized in that said a plurality of input is two inputs; Said at least one little Tape dispensers is little two distributors of being with; Said CATV low frequency distributor is CATV low frequency four distributors; Said a plurality of little band mixer is four little band mixers.
7. according to each described mixed allocation device among the claim 1-6, it is characterized in that said little band mixer comprises first series via and second series via that inserts the CATV signal of incoming radio frequency signal;
Wherein, First series via comprises the electric capacity of at least two series connection; Each electric capacity along receiving side signal to positive terminal connect one group of series circuit; This series circuit is made up of microstrip line and electric capacity, and the positive terminal of the electric capacity in an end of this series circuit and the corresponding series via is connected other end ground connection;
Wherein three groups of parallel circuitss are connected respectively in this second series via, and wherein each parallel circuits constitutes by electric capacity is parallelly connected with microstrip line, and the two ends of first group of parallel circuits connect an end of capacitor C 4, capacitor C 5 respectively, the other end ground connection of capacitor C 4, capacitor C 5; Second group of parallel circuits along receiving side signal to positive terminal connect an end of capacitor C 6, the other end ground connection of capacitor C 6; The 3rd group of parallel circuits along receiving side signal to negative pole end connect capacitor C 7, the other end ground connection of capacitor C 7; Microstrip line M1, M5 connect respectively for the leading portion of the series circuit of forming at three groups of parallel circuitss simultaneously, and rear end.
8. mixed allocation device according to claim 7 is characterized in that, the electric capacity of said at least two series connection is 4.
9. mixed allocation device according to claim 8 is characterized in that, said electric capacity is patch capacitor.
10. mixed allocation device according to claim 7 is characterized in that, said mixed allocation device also comprises power amplifier, and said power amplifier is arranged on before at least one radiofrequency signal input port of little band mixer.
11. mixed allocation device according to claim 7; Further comprise and said a plurality of input, at least one little Tape dispensers and low frequency distributor between little band mixer of reverse use; Be used to receive the mixed signal of 5M, from said mixed signal, to isolate CATV signal and Wi-Fi signal to CATV and the Wi-Fi of 2.5G.
12. a method that is used for the mixed allocation of radiofrequency signal and CATV signal, this method adopts according to each described radiofrequency signal among the claim 1-10 and CATV signal mixed allocation device, and it is characterized in that: this method may further comprise the steps:
(1) at first radiofrequency signal is passed through little Tape dispensers; Be transferred to an input port of corresponding little band mixer after distributing; Simultaneously, after being distributed through CATV low frequency distributor, the CATV signal is transferred to the another one input port of corresponding little band mixer;
(2) export after closing the road to the radiofrequency signal after distributing and CATV signal through little band mixer then.
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