CN102752179B - Radio frequency signal and CATV (Community Antenna Television) signal hybrid distribution device - Google Patents
Radio frequency signal and CATV (Community Antenna Television) signal hybrid distribution 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 the Signal transmissions communications 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 represents multiple-input and multiple-output.Be widely adopted in forth generation mobile communication technology standard, such as IEEE 802.16e (Wimax), Long Term Evolution (LTE).In new generation of wireless local area network (LAN) (WLAN) standard, be generally used for IEEE802.11n, but also may be used for other 802.11 technology.MIMO is referred to as space diversity sometimes, because it uses multiple spatial channel transmission and receives data, only has website (mobile device) or access point (AP) to support could dispose MIMO during MIMO.
Cable Wi-Fi is the radiofrequency signal of Wi-Fi by existing CATV cable television system, by special mixer and splitter low-loss ground, high isolator from inside CATV signal mixed allocation to different coaxial cables, be transferred to low-loss in the room of user, realize the green in room, high-quality WLAN signal covers, and provide reliable and real operable fast wireless network, Cable Wi-Fi system makes the MIMO technology of 802.11n wireless network utilize with succeeding.
By the retrieval to prior art, occurred radiofrequency signal to mix and the technology of dividing equally with CATV signal, such as Chinese publication application number is 200820057754, and denomination of invention is " the CATV integrated access system based on 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 as shown in Figure 1, AP with broadband internet interface is installed in light current well, several paths are divided into again after the CATV signal mixing after the amplification of CATV amplifier by closing distributor, again by original co-axial cables transport to resident family, what transmit from the cable branch's mixer to resident family is the radiofrequency signal of 5MHz-1GHz and 2.4-2.5GHz, in this section of transmission channel, if the parts such as distributor or amplifier having low-frequency range just need to be replaced by the parts of wideband 5MHz-2.5GHz, otherwise Wi-Fi signal just produces very seriously decays.When broadband signal has arrived in resident family, in general most family has parlor and several bedroom, originally necessarily is furnished with the CATV distributor of low frequency, in the engineering of transformation, the CATV distributor of low frequency must be replaced with 5MHz-2.5GHz wide-frequency distributor, last step is that panel resident's wall being inserted television set is replaced with the C & Wi-Fi Terminal panel that inside has specialized circuitry, such CATV signal just can be separated with Wi-Fi signal effectively, and is distributed to each room equably.The synthesis distributor schematic diagram of prior art as shown in Figure 2, as can be seen from the schematic diagram of Fig. 2, what the program adopted is first Wi-Fi and CATV signal is carried out conjunction road, then carry out separately with the wideband splitter of a point eight, and the prior art adopts first carries out conjunction road, and then carry out shunt with wideband splitter.Wide-frequency distributor, from 5M to 2.5G, do decay get off and will be difficult to.Although mixer is less than 1DB, eight distributor Insertion Loss are greater than more than 15DB, and flatness is difficult to meet the demands, and the workload of scheduling and planning is also much larger.The wideband splitter of mixer and one point eight is owing to adopting realizing as lumped parameter devices such as magnet rings of applicable low-frequency channel, cause the Wi-Fi signal for working in 2.4GHZ, decay is just large in the extreme, product performance index is just difficult to meet instructions for use, Wi-Fi signal and CATV signal mutual isolation also poor.
Cable & Wi-Fi system is main Problems existing at present: for existing catv network, the branching ratio of coaxial cable is more, the long Wi-Fi signal attenuation to 2.4GHZ of cable is larger, as client particularly cellphone subscriber, picture iPHONE cellphone subscriber, in the design owing to considering the life-span of battery and the impact on health, Wi-Fi signal is far smaller than the transmission power level of AP, actual emission power is less than 1/10 of AP, the Wi-Fi signal of handset emissions passes back to AP through catv network, signal has been attenuated very faint, substantially be submerged in inside noise, because wireless network is when carrying out transmitting-receiving transmission data, the speed of data is directly proportional to the signal to noise ratio of transmitting-receiving two-end row relation, be difficult to realize high speed communication like this under the condition of low signal-to-noise ratio.So the received signal to noise ratio improving AP and client is the subject matter that current Cable & Wi-Fi system needs to solve simultaneously.Second needs the problem solved to be: Wi-Fi signal and the mutually isolated problem of CATV signal.
The construction of Cable & Wi-Fi system as from the foregoing, what first need solution is that height is incorporated into CATV signal and Wi-Fi inside coaxial cable isolator the low-loss of Wi-Fi signal.
Summary of the invention
For solving the above-mentioned defect of prior art, the present invention devises a kind of radiofrequency signal based on MIMO and the high mixed allocation devices and methods therefor of isolating of CATV signal low-loss.This technology traditional first closes the mixed allocation pattern of dividing afterwards by changing on the one hand, adopt the mode of multiple signals first being divided to rear conjunction, on the other hand by transforming the internal circuit of mixer, inductance is formed with microstrip line, thus the Signal transmissions of the good low-loss achieving Cable & Wi-Fi system, high isolation.
According to an aspect of the present invention, provide the mixed allocation device of a kind of radiofrequency signal and CATV signal, this mixed allocation device comprises multiple input, at least one micro-Tape dispensers, a CATV low frequency distributor and multiple micro-band mixer; One wherein in multiple input is CATV signal input part, and remaining is radio-frequency (RF) signal input end, and described CATV signal input part is coupled with described CATV low frequency distributor, and described radio-frequency (RF) signal input end is coupled with corresponding micro-Tape dispensers; The quantity N of the shunting sign that at least one micro-Tape dispensers is total equals the quantity N of CATV low frequency distributor shunting sign, and the quantity of described shunting sign equals the quantity N of mixer; And the quantity N of described shunting sign meets following formula: N=2
n(n=2,3,4 ...).From the signal that each radio-frequency (RF) signal input end is come in, by corresponding micro-Tape dispensers, first distribute the input port being transferred to corresponding micro-band mixer afterwards, be transferred to the another one input port of corresponding micro-band mixer after the signal that CATV signal input part is come in also is distributed by CATV low frequency distributor, export after the radiofrequency signal after distribution and CATV signal being closed road finally by micro-band mixer.
Wherein, the radiofrequency signal entered can be divided equally or be distributed into N road signal by a certain percentage by described micro-Tape dispensers; CATV signal can be divided equally or be distributed into N road signal by a certain percentage by described CATV low frequency distributor.
Wherein, described multiple input is three inputs; At least one micro-Tape dispensers described is two micro-band four distributors; Described CATV low frequency distributor is CATV low frequency eight distributor; Described micro-band mixer is eight micro-band mixers.
Wherein said multiple input is three inputs; At least one micro-Tape dispensers described is two micro-band two distributors; Described CATV low frequency distributor is CATV low frequency four distributor; Described multiple micro-band mixer is four micro-band mixers.
Wherein said multiple input is five inputs; At least one micro-Tape dispensers described is four micro-band two distributors; Described CATV low frequency distributor is CATV low frequency eight distributor; Described multiple micro-band mixer is eight micro-band mixers.
Wherein said multiple input is two inputs; At least one micro-Tape dispensers described is micro-band two distributor; Described CATV low frequency distributor is CATV low frequency four distributor; Described multiple micro-band mixer is four micro-band mixers.
Wherein said micro-band mixer comprises the first series via of incoming radio frequency signal and the second series via of access CATV signal; Wherein the first series via comprises the electric capacity of at least two series connection, one group of series circuit is connected along the positive terminal in Signal reception direction at each electric capacity, this series circuit is made up of microstrip line and electric capacity, one end of this series circuit is connected with the positive terminal of the electric capacity in corresponding series via, other end ground connection; In this second series via, three groups of parallel circuitss are connected respectively, and wherein each parallel circuits is formed by electric capacity is in parallel with microstrip line, and the two ends of first group of parallel circuits connect one end of electric capacity C4, electric capacity C5 respectively, the other end ground connection of electric capacity C4, electric capacity C5; Second group of parallel circuits connects one end of electric capacity C6 along the positive terminal in Signal reception direction, the other end ground connection of electric capacity C6; 3rd group of parallel circuits connects electric capacity C7, the other end ground connection of electric capacity C7 along the negative pole end in Signal reception direction; Meanwhile, connect in leading portion and the rear end of the series circuit of three groups of parallel circuitss composition microstrip line M1, M5 respectively.
Wherein, the electric capacity of described at least two series connection is 4.Wherein said electric capacity is patch capacitor.
Wherein, described mixed allocation device also comprises power amplifier, before described power amplifier is arranged at least one radiofrequency signal input port of micro-band mixer.
Described device comprises further and described multiple input, reverse use between at least one micro-Tape dispensers and a low frequency distributor micro-band mixer, for receiving the mixed signal of CATV and the Wi-Fi of 5M to 2.5G, to isolate CATV signal and Wi-Fi signal from described mixed signal.
According to a further aspect in the invention, propose a kind of method of radiofrequency signal and CATV signal mixed allocation, the method adopts above-mentioned radiofrequency signal and CATV signal mixed allocation device, the method comprises the following steps: first radiofrequency signal is passed through micro-Tape dispensers by (1), an input port of corresponding micro-band mixer is transferred to after distributing, meanwhile, the another one input port of corresponding micro-band mixer is transferred to after being distributed by CATV low frequency distributor by CATV signal; (2) however by micro-band mixer distribute after radiofrequency signal and CATV signal close road after export.
The present invention first divides the method for rear conjunction to multiple signals by adopting, and transform the internal circuit of mixer, is formed inductance with microstrip line, achieves the Signal transmissions of the low-loss of Cable & Wi-Fi system, high isolation.
Accompanying drawing explanation
Fig. 1 is the basic structure of the circuit of radiofrequency signal and CATV signal in prior art;
Fig. 2 is the synthesis distributor schematic diagram of prior art in prior art;
Fig. 3 is radiofrequency signal according to a first embodiment of the present invention and CATV signal mixed allocation device;
Fig. 4 is radiofrequency signal according to a second embodiment of the present invention and CATV signal mixed allocation device;
Fig. 5 is radiofrequency signal according to a third embodiment of the present invention and CATV signal mixed allocation device;
Fig. 6 is radiofrequency signal according to a fourth embodiment of the present invention and CATV signal mixed allocation device;
Fig. 7 is the circuit theory diagrams of micro-band mixer of the present invention;
Fig. 8 is the circuit theory diagrams of CATV tetra-distributor (that is, splitter or splitter);
Fig. 9 is the circuit theory diagrams of Wi-Fi tetra-distributor (that is, splitter or splitter);
Figure 10 is after first there is CATV and Wi-Fi mixed signal, using anti-for micro-band mixer the circuit theory diagrams used as splitter.
As shown in the figure, in order to the structure of embodiments of the invention clearly can be realized, specific structure and device are marked in the drawings, but this is only signal needs, be not intended to limit the invention in this ad hoc structure, device and environment, according to specific needs, these devices and environment can carry out adjusting or revising by those of ordinary skill in the art, and the adjustment carried out or amendment are still included in the scope of accompanying claim.
Embodiment
Below in conjunction with the drawings and specific embodiments, the mixed allocation that a kind of radiofrequency signal provided by the invention and CATV signal low-loss height are isolated is described in detail.Here do to illustrate, in order to make embodiment more detailed, the following examples are best, preferred embodiment, also can adopt other alternative and implement for some known technologies those skilled in the art simultaneously; And accompanying drawing part is only to describe embodiment more specifically, and be not intended to carry out concrete restriction to the present invention.
In general embodiment of the present invention, this radiofrequency signal and CATV signal mixed allocation device comprise multiple input, at least one micro-Tape dispensers, a CATV low frequency distributor and multiple micro-band mixer; One wherein in multiple input is CATV signal input part, and remaining is radio-frequency (RF) signal input end, and described CATV signal input part is coupled with described CATV low frequency distributor, and described radio-frequency (RF) signal input end is coupled with corresponding described micro-Tape dispensers; The quantity N of the shunting sign that at least one micro-Tape dispensers is total equals the quantity N of CATV low frequency distributor shunting sign, and the quantity of described shunting sign equals the quantity N of mixer; And the quantity N of described shunting sign meets following formula: N=2
n(n=2,3,4 ...).Wherein from the signal that each radio-frequency (RF) signal input end is come in, by corresponding described micro-Tape dispensers, first distribute the input port being transferred to corresponding micro-band mixer afterwards, be transferred to the another one input port of corresponding micro-band mixer after the signal that CATV signal input part is come in also is distributed by CATV low frequency distributor, export after the radiofrequency signal after distribution and CATV signal being closed road finally by described micro-band mixer.
[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 micro-band four distributors, CATV low frequency eight distributor and eight micro-band mixers.Two micro-band four distributors are the distributors be made up of micro-band working in 2.4GHZ-2.5GHZ, and the difference of itself and conventional distributor is to adopt microstrip line to form inductance, as shown in Figure 9; CATV low frequency eight distributor is consistent with the distributor that the magnet ring in traditional C ATV system is formed.Micro-band mixer of Wi-Fi and CATV can adopt the microstrip circuit of computer-aided design to form.The radiofrequency signal entered can be divided equally or distribute by a certain percentage by described micro-band four distributor; CATV signal can be divided equally or distribute by a certain percentage by described CATV low frequency eight distributor.
Wherein first, second input is radiofrequency signal (Wi-Fi) input, the 3rd input is CATV signal input part.First, second micro-band four distributor is coupled respectively with first, second input, thus received RF signal, and radiofrequency signal is always divided into eight tunnels.Meanwhile, CATV low frequency eight distributor is coupled with the 3rd input, thus receives CATV signal, and CATV signal is divided into eight tunnels.In use, its operation principle is: each signal of coming in from radio-frequency (RF) signal input end, by corresponding micro-band four distributor, an input port of corresponding micro-band mixer is transferred to after distributing with carrying out low-loss, the another one input port of corresponding micro-band mixer is transferred to after the signal that CATV input is come in also is distributed by CATV low frequency eight distributor with carrying out low-loss, finally by micro-band mixer, the radiofrequency signal after distribution and CATV signal are carried out exporting after low-loss height closes road isolator, such benefit is: the wideband splitter of 5MHZ-2.5GHZ relatively, Wi-Fi and CATV signal shunt (namely, distributor or splitter) frequency range relatively much narrow, the performance index of design are just easy to reach, production cost also declines to a great extent.Wherein, alternatively, described mixed allocation device can also comprise power amplifier (not shown), before described power amplifier is arranged at least one radiofrequency signal input port of micro-band mixer.That is, after radiofrequency signal (Wi-Fi) is distributed by corresponding micro-band four prop with carrying out low-loss, before being transferred to an input port of corresponding micro-band mixer, power amplifier is added, to improve the receiving sensitivity of wi-fi signal.
[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 micro-band two distributors, CATV low frequency four distributor and four micro-band mixers.Two micro-band two distributors are the distributors be made up of micro-band working in 2.4GHZ-2.5GHZ, and CATV low frequency four distributor is consistent with the distributor that the magnet ring in traditional C ATV system is formed, and its circuit theory diagrams as shown in Figure 8.Micro-band mixer of Wi-Fi and CATV can adopt the microstrip circuit of computer-aided design to form.The radiofrequency signal entered can be divided equally or distribute by a certain percentage by described micro-band two distributor; CATV signal can be divided equally or distribute by a certain percentage by described CATV low frequency four distributor.
Wherein first, second input is radiofrequency signal (Wi-Fi) input, the 3rd input is CATV signal input part.First, second micro-band two distributor is coupled respectively with first, second input, thus received RF signal, and radiofrequency signal is always divided into four tunnels.Meanwhile, CATV low frequency four distributor is coupled with the 3rd input, thus receives CATV signal, and CATV signal is divided into four tunnels.In use, its operation principle is: each signal of coming in from radio-frequency (RF) signal input end, by corresponding micro-band two distributor, an input port of corresponding micro-band mixer is transferred to after distributing with carrying out low-loss, be transferred to the another one input port of corresponding micro-band mixer after the signal that CATV input is come in also is distributed by CATV low frequency four distributor with carrying out low-loss, finally by micro-band mixer, the radiofrequency signal after distribution and CATV signal carried out exporting after low-loss height closes road isolator.
[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 micro-band two distributors, CATV low frequency eight distributor and eight micro-band mixers.Four micro-band two distributors are the distributors be made up of micro-band working in 2.4GHZ-2.5GHZ, and its principle is identical with traditional high frequency distributor; CATV low frequency eight distributor is consistent with the distributor that the magnet ring in traditional C ATV system is formed.Micro-band mixer of Wi-Fi and CATV can adopt the microstrip circuit of computer-aided design to form.The radiofrequency signal entered can be divided equally or distribute by a certain percentage by described micro-band two distributor; CATV signal can be divided equally or distribute by a certain percentage by described CATV low frequency eight distributor.
Wherein first, second, third, fourth input is radiofrequency signal (Wi-Fi) input, the 5th input is CATV signal input part.First, second, third, fourth micro-band two distributor is coupled respectively with first, second, third, fourth input, thus received RF signal.Meanwhile, CATV low frequency eight distributor is coupled with the 5th input, thus receives CATV signal.In use, its operation principle is: each signal of coming in from radio-frequency (RF) signal input end, by corresponding micro-band two distributor, an input port of corresponding micro-band mixer is transferred to after distributing with carrying out low-loss, be transferred to the another one input port of corresponding micro-band mixer after the signal that CATV input is come in also is distributed by CATV low frequency eight distributor with carrying out low-loss, finally by micro-band mixer, the radiofrequency signal after distribution and CATV signal carried out exporting after low-loss height closes road isolator.
[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, micro-band four prop, CATV low frequency four prop and four micro-band mixers.Micro-band four prop is the distributor be made up of micro-band working in 2.4GHZ-2.5GHZ, and its principle is identical with traditional high frequency distributor; CATV low frequency four distributor is consistent with the distributor that the magnet ring in traditional C ATV system is formed.Micro-band mixer of Wi-Fi and CATV can adopt the microstrip circuit of computer-aided design to form.The radiofrequency signal entered can be divided equally or distribute by a certain percentage by described micro-band four prop; CATV signal can be divided equally or distribute by a certain percentage by described CATV low frequency four prop.
Wherein first input end is radiofrequency signal (Wi-Fi) input, the second input is CATV signal input part.Micro-band four splitter is coupled with first input end, thus received RF signal.Meanwhile, CATV low frequency four splitter is coupled with the second input, thus receives CATV signal.In use, its operation principle is: each signal of coming in from radio-frequency (RF) signal input end, four props are divided by corresponding micro-band, an input port of corresponding micro-band mixer is transferred to after distributing with carrying out low-loss, be transferred to the another one input port of corresponding micro-band mixer after the signal that CATV input is come in also is distributed by CATV low frequency four distributor with carrying out low-loss, finally by micro-band mixer, the radiofrequency signal after distribution and CATV signal carried out exporting after low-loss height closes road isolator.
Wherein, alternatively, described mixed allocation device also comprises power amplifier, before described power amplifier is arranged at least one radiofrequency signal input port of micro-band mixer.That is, be transferred to an input port of corresponding micro-band mixer after radiofrequency signal (Wi-Fi) is distributed by corresponding micro-band four prop with carrying out low-loss before, power amplifier is added, to improve the receiving sensitivity of wi-fi signal.Although only add power amplifier in the first, the 4th embodiment, but be to be understood that this power amplifier can be applied in each embodiment of the present invention for those skilled in the art.
[embodiment 5]
If when first running into the Cable & Wi-Fi mixed signal of 5M to 2.5G, first can be used as splitter anti-for micro-band mixer, thus obtain CATV and Wi-Fi two paths of signals, its schematic diagram as shown in Figure 10.Then as described above in Example, more first divide the mode of rear conjunction to realize the distribution of broadband signal, its principle, as above-described embodiment, here will repeat no more.
The circuit theory diagrams of micro-band mixer of the preferred embodiment of the present invention as shown in Figure 7.As above, described in embodiment 1-embodiment 5, an input port (the first input port) incoming radio frequency signal of micro-band mixer, another one input port (the second input port) accesses CATV signal.This micro-band mixer comprises following components and parts.
Electric elements in the first series via corresponding to incoming radio frequency signal comprise four electric capacity be connected in series (C8, C9, C10, C11); One group of series circuit is connected along the positive terminal (anode) in Signal reception direction at each electric capacity, thus in whole series via four series circuits (M6, C12) in parallel, (M7, C13), (M8, C14), (M9, C15), this series circuit is made up of microstrip line and electric capacity, one end of this series circuit is connected with the positive terminal of the electric capacity in corresponding series via, other end ground connection.
Electric elements in the second series via corresponding to access CATV signal comprise: three groups of parallel circuitss (C1, M2), (C2, M3) (C3, M4) are connected in series respectively, wherein each parallel circuits is formed by electric capacity is in parallel with microstrip line, the two ends of first group of parallel circuits connect one end of electric capacity C4, C5 respectively, the other end ground connection of electric capacity C4, C5; Second group of parallel circuits connects one end of electric capacity C6 along the positive terminal (anode of C2) in Signal reception direction, the other end ground connection of electric capacity C6; 3rd group of parallel circuits connects electric capacity C7, the other end ground connection of electric capacity C7 along the negative pole end (negative electrode of C3) in Signal reception direction; Meanwhile, to connect respectively in the front end of the series circuit of three groups of parallel circuitss composition and rear end microstrip line (M1, M5).The microstrip line (M5) of end thus export CATV signal and mix with the radiofrequency signal that the electric capacity (C11) of the first series via end exports and export afterwards.
Electric capacity in above-mentioned micro-band mixer is preferably patch capacitor, it should be noted that the electric elements of above-mentioned first series via are a kind of preferred embodiments here simultaneously, only be the principle of the preferred structure that this first series via is described, and be not intended to be limited to this, that is, the series capacitance (C8, C9, C10, C11) in the first series via and the series circuit (M6, C12) of correspondence thereof, (M7, C13), (M8, C14), (M9, C15) also can realize by two groups, three groups, five groups etc.
Adopt micro-band mixer of foregoing circuit structure, owing to utilizing microstripline as inductance, and simultaneously can adopt high frequency patch capacitor to form, thus compared with original scheme, there is following advantage: 1, mainly the performance parameter of Insertion Loss and isolation etc. is got well many than originally; 2, due to the consistency of microstrip line, the consistency of production processing easily ensures, cost performance is higher.
Finally it should be noted that, above embodiment is only in order to describe technical scheme of the present invention instead of to limit this technical method, the present invention can extend in application other amendment, change, application and embodiment, and therefore think that all such amendments, change, application, embodiment are all in spirit of the present invention and teachings.
Claims (10)
1., for a mixed allocation device for radiofrequency signal and CATV signal, this mixed allocation device comprises multiple input, at least one micro-Tape dispensers, a CATV low frequency distributor and multiple micro-band mixer; One wherein in multiple input is CATV signal input part, and remaining is radio-frequency (RF) signal input end, and described CATV signal input part is coupled with described CATV low frequency distributor, and described radio-frequency (RF) signal input end is coupled with corresponding described micro-Tape dispensers; The quantity N of the shunting sign that at least one micro-Tape dispensers is total equals the quantity N of CATV low frequency distributor shunting sign, and the quantity N of described shunting sign equals the quantity N of described micro-band mixer; And the quantity N of described shunting sign meets following formula:
N＝2
n(n＝2、3、4……)；
It is characterized in that:
From the signal that each radio-frequency (RF) signal input end is come in, by corresponding described micro-Tape dispensers, first distribute the input port being transferred to corresponding micro-band mixer afterwards, simultaneously, be transferred to the another one input port of corresponding micro-band mixer after the signal that CATV signal input part is come in also is distributed by CATV low frequency distributor, export after the radiofrequency signal after distribution and CATV signal being closed road finally by described micro-band mixer;
Wherein, described micro-band mixer comprises the first series via of incoming radio frequency signal and the second series via of access CATV signal;
First series via comprises the electric capacity of at least two series connection, one group of series circuit is connected along the positive terminal in Signal reception direction at each electric capacity, this series circuit is made up of microstrip line and electric capacity, one end of this series circuit is connected with the positive terminal of the electric capacity in corresponding series via, other end ground connection;
Wherein in this second series via, three groups of parallel circuitss are connected respectively, and wherein each parallel circuits is formed by electric capacity is in parallel with microstrip line, and the two ends of first group of parallel circuits connect one end of electric capacity C4, electric capacity C5 respectively, the other end ground connection of electric capacity C4, electric capacity C5; Second group of parallel circuits connects one end of electric capacity C6 along the positive terminal in Signal reception direction, the other end ground connection of electric capacity C6; 3rd group of parallel circuits connects electric capacity C7, the other end ground connection of electric capacity C7 along the negative pole end in Signal reception direction; Meanwhile, connect in leading portion and the rear end of the series circuit of three groups of parallel circuitss composition microstrip line M1, M5 respectively.
2. mixed allocation device according to claim 1, is characterized in that, the radiofrequency signal of reception is divided equally or is distributed into N road signal by a certain percentage by described micro-Tape dispensers; CATV signal is divided equally or is distributed into N road signal by a certain percentage by described CATV low frequency distributor.
3. mixed allocation device according to claim 1, is characterized in that, described multiple input is three inputs; At least one micro-Tape dispensers described is two micro-band four distributors; Described CATV low frequency distributor is CATV low frequency eight distributor; Described micro-band mixer is eight micro-band mixers.
4. mixed allocation device according to claim 1, is characterized in that, described multiple input is three inputs; At least one micro-Tape dispensers described is two micro-band two distributors; Described CATV low frequency distributor is CATV low frequency four distributor; Described multiple micro-band mixer is four micro-band mixers.
5. mixed allocation device according to claim 1, is characterized in that, described multiple input is five inputs; At least one micro-Tape dispensers described is four micro-band two distributors; Described CATV low frequency distributor is CATV low frequency eight distributor; Described multiple micro-band mixer is eight micro-band mixers.
6. mixed allocation device according to claim 1, is characterized in that described multiple input is two inputs; At least one micro-Tape dispensers described is micro-band two distributor; Described CATV low frequency distributor is CATV low frequency four distributor; Described multiple micro-band mixer is four micro-band mixers.
7. mixed allocation device according to claim 1, is characterized in that, the electric capacity of described at least two series connection is 4.
8. mixed allocation device according to claim 7, is characterized in that, described electric capacity is patch capacitor.
9. mixed allocation device according to claim 1, is characterized in that, described mixed allocation device also comprises power amplifier, before described power amplifier is arranged at least one radiofrequency signal input port of micro-band mixer.
10. mixed allocation device according to claim 1, comprise further and described multiple input, reverse use between at least one micro-Tape dispensers and a low frequency distributor micro-band mixer, for receiving the mixed signal of CATV and the Wi-Fi of 5M to 2.5G, to isolate CATV signal and Wi-Fi signal from described mixed signal.
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| US9113187B2 (en) * | 2013-09-04 | 2015-08-18 | Arris Enterprises, Inc. | FFT tap WiFi extension device |
| CN106161159A (en) * | 2016-08-09 | 2016-11-23 | 嘉兴佳利电子有限公司 | A kind of filter circuit being applied in WOC local side |
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