CN104079858A - Backward signal transmitting and mixing device - Google Patents
Backward signal transmitting and mixing device Download PDFInfo
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- CN104079858A CN104079858A CN201410332125.4A CN201410332125A CN104079858A CN 104079858 A CN104079858 A CN 104079858A CN 201410332125 A CN201410332125 A CN 201410332125A CN 104079858 A CN104079858 A CN 104079858A
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Abstract
The invention discloses a backward signal transmitting and mixing device. Backward signals are input into the common-mode input end of a primary coil, a transmission channel of forward signals and the backward signals is connected to the difference input end of the primary coil, the difference output ends of a secondary coil are connected to a forward signal receiving device, the inbound difference input ends of an input impedance matching unit are connected to the difference input end of the primary coil, the inbound common-mode input end is connected to the common-mode input ends of the primary coil respectively, the outbound different input ends are connected to the difference output ends of the secondary coil respectively, and the outbound common-mode input end is connected to the common-mode input end of the secondary coil. The backward signals are overlaid to the transmission channel of the forward signals; meanwhile, influence on the forward signal receiving device from the backward signals is reduced, and the receiving quality of the forward signals is ensured.
Description
Technical field
The present invention relates to a kind of bidirectional signal transmission system, relate in particular to reverse signal transmission mixing arrangement.
Background technology
Along with multimedia audio-video transmitting high speed degree, high stability, the demand of long distance constantly increases, especially lay monitoring field and reach the transmission range requirement of hundreds of rice, the design problem of coffret becomes and becomes increasingly complex, and realizing the signal transmission cheaply of high-performance high stability with minimum passage becomes an urgent demand of docking port design.Can transmit two-way multimedia signal and control signal will be enriched the function of multimedia transmission greatly with minimum passage simultaneously, reduce the cost of channel routing, the various multimedia transmission standards of prior art, for example VGA, DVI, HDMI, DisplayPort, SDI etc., some does not define the function of two-way signaling transmission, although some supports two-way signaling transmission, but need to realize by increasing independently passage, even if realized the transmission of two-way signaling on a passage, but there is very large decay apart from passage for signal due to long, the interference each other of forward and reverse signal has reduced the susceptibility of signal receiving end, shorten transmission range, reverse signal transmission plan of the present invention can fine solution forward and reverse signal between mutual interference problem, for two-way signaling transmits the solution that a kind of low-cost and high-performance is provided.
Summary of the invention
Technical problem to be solved by this invention is, the invention provides a kind of reverse signal transmission mixing arrangement, do not affect in guarantee under the condition of forward signal reception, reverse signal is added in same transmission channel, thereby realize mutual glitch-free two-way signaling transmission.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
As a kind of reverse signal transmission mixing arrangement of the present invention, comprise
Transformer unit, reverse signal sends filter unit, the forward differential signal unit that accepts filter, input impedance matching unit and output impedance matching unit, the reverse signal that this reverse signal dispensing device sends sends filter unit through selectable reverse signal and is input on the common mode input of transformer unit primary coil, forward and reverse signal transmission channel are connected on one of them differential input end of transformer unit primary coil, for keeping impedance matching property, at the input termination input impedance matching unit of transformer unit, the forward differential signal of two difference output ends output of transformer secondary output coil is connected to forward signal receiving system through the selectable forward differential signal unit that accepts filter, while is at the output termination output impedance matching unit of transformer unit, the high pass of filter unit or low pass bandwidth are adjustable, if realized at chip internal, it is register switch regulating and controlling bandwidth.
The invention has the beneficial effects as follows:
The present invention is transmitted mixing arrangement by reverse signal, in forward signal passage one side, forward is mixed with reverse signal, at forward signal receiving terminal once using reverse signal as common-mode signal filtering, ensure not affect the normal reception of forward signal, simultaneously by a channel transfer forward and reverse two-way signaling.
Brief description of the drawings
Fig. 1 is the application implementation system module figure of reverse signal transmission mixing arrangement of the present invention.
Fig. 2 is a kind of execution mode of reverse signal transmission mixing arrangement of the present invention.
Fig. 3 is the another kind of execution mode of reverse signal transmission mixing arrangement of the present invention.
Fig. 4 is a kind of embodiment of input impedance matching unit in reverse signal transmission mixing arrangement of the present invention.
Fig. 5 is the another kind of embodiment of input impedance matching unit in reverse signal transmission mixing arrangement of the present invention.
Fig. 6 is a kind of embodiment of output impedance matching unit in reverse signal transmission mixing arrangement of the present invention.
Fig. 7 is the another kind of embodiment of output impedance matching unit in reverse signal transmission mixing arrangement of the present invention.
Fig. 8 is a kind of embodiment of low-pass filter unit in reverse signal transmission mixing arrangement of the present invention.
Fig. 9 is the another kind of embodiment of low-pass filter unit in reverse signal transmission mixing arrangement of the present invention.
Figure 10 is a kind of embodiment of high pass filter unit in reverse signal transmission mixing arrangement of the present invention.
Figure 11 is the another kind of embodiment of high pass filter unit in reverse signal transmission mixing arrangement of the present invention.
In figure:
10: bidirectional signal transmission system 100: forward signal dispensing device
101: reverse signal receiving system 102: transmission channel
103: reverse signal transmission mixing arrangement 104: reverse signal dispensing device
105: forward signal receiving system 111: reverse signal sends low-pass filter unit
112: forward signal receives high pass filter unit 121: input impedance matching unit
122: output impedance matching unit
Embodiment
Below in conjunction with the drawings and specific embodiments, reverse signal transmission mixing arrangement of the present invention is described in further detail:
As shown in Figure 1, reverse signal transmission mixing arrangement of the present invention is a part for reverse signal transmission mixing arrangement, bidirectional signal transmission system 10, comprise forward signal dispensing device 100, reverse signal receiving system 101, transmission channel 102, reverse signal transmission mixing arrangement 103, reverse signal dispensing device 104, forward signal receiving system 105.The forward signal that forward signal dispensing device 100 sends is transmitted mixing arrangement 103 through transmission channel 102 to reverse signal, outputing to forward signal receiving system 105 by reverse signal transmission mixing arrangement 103 again receives, the reverse signal that reverse signal dispensing device 104 sends simultaneously inputs to reverse signal transmission mixing arrangement 103, mixed with forward signal by reverse signal transmission mixing arrangement 103 again, receive to reverse signal receiving system 101 through transmission channel 102.Reverse signal transmission mixing arrangement 103 export to forward signal receiving system 105 target signal filter reverse signal only retain forward signal, ensured the normal reception of forward signal receiving system 105.
A kind of embodiment of reverse signal transmission mixing arrangement 103 as shown in Figure 2, comprise transformer unit 110, reverse signal sends low-pass filter unit 111, and forward signal receives high pass filter unit 112, input impedance matching unit 121, output impedance matching unit 122.This scheme is applicable to the situation of reverse signal frequency lower than forward signal.The reverse signal that reverse signal dispensing device 104 sends is input to the input 501 of reverse signal transmission low-pass filter unit 111, the output 502 that reverse signal sends low-pass filter unit 111 is connected on the primary coil common mode input 205 of transformer unit 110, the transmission channel 102 of forward signal and reverse signal is connected on one of them primary coil differential input end 201 of transformer unit 110, as forward differential signal, output is connected respectively on the input 505 of two forward signals reception high pass filter unit 112 the secondary coil difference output end 203 and 204 of transformer unit 110, the output 506 of two forward signal reception high pass filter unit 112 is connected to forward signal receiving system 105.For keeping impedance matching property, increase respectively input impedance matching unit 121 and output impedance matching unit 122 at input and the output of transformer unit 110.Input impedance matching unit 121 enter the primary coil differential input end 201 and 202 that is connected respectively to transformer unit 110 to differential input end 211,212, enter the primary coil common mode input 205 that is connected to transformer unit 110 to common mode input 213.Output impedance matching unit 122 go out the secondary coil difference output end 203 and 204 that is connected respectively to transformer unit 110 to differential input end 214,215, go out the secondary coil common mode input 206 that is connected to transformer unit 110 to common mode input 216.Reverse signal only can be coupled to as common-mode signal on the primary coil differential input end 201 and 202 of transformer unit 110, balanced out completely at secondary coil difference output end 203 and 204 reverse signals, only remaining forward differential signal, has realized the elimination that reverse signal disturbs forward signal.Reverse signal sends the radio-frequency component in low-pass filter unit 111 filtering reverse signals simultaneously, reduce the impact on forward signal, forward signal receives residual reverse signal low-frequency component in high pass filter unit 112 filtering forward differential signals, has further suppressed the interference of reverse signal to forward signal.
The embodiment of reverse signal transmission mixing arrangement 103 as shown in Figure 3, comprises that transformer unit 110, reverse signal send high pass filter unit 113, forward signal receives low-pass filter unit 114, input impedance matching unit 121 and output impedance matching unit 122.This execution mode is applicable to the situation of reverse signal frequency higher than forward signal.The reverse signal that reverse signal dispensing device 104 sends is input to the input 505 of reverse signal transmission high pass filter unit 113, the output 506 that reverse signal sends high pass filter unit 113 is connected on the primary coil common mode input 205 of transformer unit 110, the transmission channel 102 of forward signal and reverse signal is connected on one of them primary coil differential input end 201 of transformer unit 110, as forward differential signal, output is connected respectively on the input 501 of two forward signals reception low-pass filter units 114 the secondary coil difference output end 203 and 204 of transformer unit 110, the output 502 of two forward signal reception low-pass filter units 114 is connected to forward signal receiving system 105.For keeping impedance matching property, increase respectively input impedance matching unit 121 and output impedance matching unit 122 at input and the output of transformer unit 110.Input impedance matching unit 121 enter the primary coil differential input end 201 and 202 that is connected respectively to transformer unit 110 to differential input end 211,212, enter the primary coil common mode input 205 that is connected to transformer unit 110 to common mode input 213.Output impedance matching unit 122 go out the secondary coil difference output end 203 and 204 that is connected respectively to transformer unit 110 to differential input end 214,215, go out the secondary coil common mode input 206 that is connected to transformer unit 110 to common mode input 216.Reverse signal only can be coupled to as common-mode signal on the primary coil differential input end 201 and 202 of transformer unit 110, balanced out completely at secondary coil difference output end 203 and 204 reverse signals, only remaining forward differential signal, has realized the elimination that reverse signal disturbs forward signal.Reverse signal sends the low-frequency component in high pass filter unit 113 filtering reverse signals simultaneously, reduce the impact on forward signal, forward signal receives residual reverse signal radio-frequency component in low-pass filter unit 114 filtering forward differential signals, has further suppressed the interference of reverse signal to forward signal.
According to concrete application demand, can select only to add reverse signal transmitting filter 111 or 113, or only add forward signal receiving filter 112 or 114, or remove both sides filter, only retain transformer unit 110.
According to concrete application demand, can select different input/output terminal connected modes.
A kind of embodiment of input impedance matching unit 121 as shown in Figure 4, comprises two input connecting resistances 1201,1202, input common mode electrical level 220.Input connecting resistance 1201,1202 be connected respectively to input impedance matching unit 121 entering to differential input end 211,212 and input common mode electrical level 220 between, input common mode electrical level 220 can be power supply, or other any levels.
The another kind of embodiment of input impedance matching unit 121 as shown in Figure 5, comprises input connecting resistance 1203,1204,1205.Input connecting resistance 1203,1204 is connected respectively to entering to differential input end 211,212 and entering between common mode input 213 of input impedance matching unit 121.Another input connecting resistance 1205 is connected between differential input end 212 and ground, as the build-out resistor of transmission channel 102 impedances.Input connecting resistance 1203 and input connecting resistance 1204 can reduce transformer internal inductance to reverse signal the attenuation under high frequency, be suitable for the application that reverse signal frequency is higher.
The embodiment of output impedance matching unit 122 as shown in Figure 6, comprises output connecting resistance 1301,1302, output common mode level 221.Output connecting resistance 1301,1302 is connected respectively to going out between differential input end 214,215 and output common mode level 221 of output impedance matching unit 122, output common mode level 221 can be power supply, or other any levels.
The embodiment of output impedance matching unit 122 as shown in Figure 7, comprises output connecting resistance 1303, output common mode level 222.Output connecting resistance 1303 be connected to output impedance matching unit 122 go out between differential input end 214,215 as difference termination impedance, output common mode level 222 is connected to out to common mode input 216, and common-mode voltage is provided.Output common mode level 222 can be power supply, or other any levels.
Reverse signal sends a kind of embodiment of low-pass filter unit 111 and forward signal reception low-pass filter unit 114 as shown in Figure 8, comprises electric capacity 2410, some resistance 1401, some switches 3401.Some groups of switches 3401 are in parallel with the unit that resistance 1401 is composed in series, be connected between input 501 and output 502, electric capacity 2410 is connected between output 502 and ground, jointly forms the adjustable low pass filter of bandwidth, and the adjustment of bandwidth realizes by the break-make of controlling some switches 3401.If need to reduce low-pass filtering bandwidth, increase parallel resistance realization by disconnecting more switches 3401, if instead need to improve filtering bandwidth, reduce parallel resistance by the more switches 3401 of closure and realize.By the resistance of the different impedances of switch, also can adjust the bandwidth of low-pass filtering.
Reverse signal sends the concrete real mode of another kind of low-pass filter unit 111 and forward signal reception low-pass filter unit 114 as shown in Figure 9, comprises electric capacity 2412, some resistance 1402, some switches 3402.The units in series that some groups of switches 3402 and resistance 1402 compose in parallel, be connected between input 501 and output 502, electric capacity 2412 is connected between output 502 and ground, jointly forms the adjustable low pass filter of bandwidth, and the adjustment of bandwidth realizes by the break-make of controlling some switches 3402.If need to reduce low-pass filtering bandwidth, increase series resistance realization by disconnecting more switches 3402, if instead need to improve filtering bandwidth, reduce series resistance by the more switches 3402 of closure and realize.By the resistance of the different impedances of switch, also can adjust the bandwidth of low-pass filtering.
Forward signal receives concrete a kind of execution mode of high pass filter unit 112 and reverse signal transmission high pass filter unit 113 as shown in Figure 10, comprises electric capacity 2413, some resistance 1403, some switches 3403, some resistance 1404, some switches 3404.Some groups of switches 3403 formed unit of connecting with resistance 1403 is connected between power supply and output 506, some groups of switches 3404 formed unit of connecting with resistance 1404 is connected between output 506 and ground, electric capacity 2413 is connected between input 505 and output 506, the adjustable high pass filter of common composition bandwidth, the adjustment of bandwidth realizes by the break-make of controlling some switches 3403 and switch 3404.If need to reduce high-pass filtering bandwidth, increase parallel resistance realization by disconnecting more switches 3403 and switch 3404, if instead need to improve high-pass filtering bandwidth, reduce parallel resistance by the more switches 3403 of closure and switch 3404 and realize.Adjust in addition parallel resistance and can also reach the effect of adjusting common mode output voltage.Circuit by switch controlling resistance can be integrated on circuit board, realizes automation control, and technique effect is obviously strengthened.
Forward signal receives the another kind of embodiment of high pass filter unit 112 and reverse signal transmission high pass filter unit 113 as shown in Figure 11, comprises electric capacity 2414, some resistance 1405, some switches 3405, some resistance 1406, some switches 3406.Some groups of switch 3405 formed unit in parallel with resistance 1405 are connected between power supply and output 506, some groups of switch 3406 formed unit in parallel with resistance 1406 are connected between output 506 and ground, electric capacity 2414 is connected between input 505 and output 506, the adjustable high pass filter of common composition bandwidth, the adjustment of bandwidth realizes by the break-make of controlling some switches 3405 and switch 3406.If need to reduce high-pass filtering bandwidth, increase series resistance realization by disconnecting more switches 3405 and switch 3406, if instead need to improve high-pass filtering bandwidth, reduce series resistance by the more switches 3405 of closure and switch 3406 and realize.Adjust in addition series resistance and can also reach the effect of adjusting common mode output voltage.
Above-mentioned reverse signal sends low-pass filter unit 111 and reverse signal transmission high pass filter unit 113 can be integrated in a chip with reverse signal dispensing device 104, adjusts filtering bandwidth by register control switch; Forward signal receives high pass filter unit 112 and forward signal reception low-pass filter unit 114 can be integrated in a chip with forward signal receiving system 105, adjusts filtering bandwidth by register control switch.
The implementation step of reverse signal transmission mixing arrangement of the present invention is: first, the reverse signal that reverse signal dispensing device sends mixes with forward signal by signal mixer unit, and the input that sends to reverse receiving system through a transmission channel receives; Secondly, the forward signal that forward signal dispensing device sends arrives signal mixer unit through same transmission channel, then outputs to forward signal receiving system by signal mixer unit, receives; In addition, signal mixer unit in the output filtering to forward signal receiving device reverse signal, ensure the reception of forward signal.This reverse signal transmission mixing arrangement does not affect under the condition of forward signal reception in guarantee, and the scheme that realizes reverse signal transmission in a transmission channel is provided.
The above is only preferred embodiment of the present invention; not the present invention is made to any pro forma restriction; the protection range of request of the present invention is worked as the content of being recorded with claims and is as the criterion; all simple change that every foundation technical spirit of the present invention is done above embodiment, be equal to replace or decompose and merge, within all still belonging to the scope of request protection of technical solution of the present invention.
Claims (17)
1. a reverse signal transmission mixing arrangement, comprise transformer unit (110), input impedance matching unit (121) and output impedance matching unit (122), it is characterized in that: the primary coil of described transformer unit (110) has primary coil common mode input (205) and two primary coil differential input ends (201, 202), reverse signal is input on primary coil common mode input (205), the transmission channel (102) of forward signal and reverse signal is connected on a primary coil differential input end (201), the secondary coil of transformer unit (110) has secondary coil common mode input (206) and secondary coil difference output end (203, 204), secondary coil difference output end (203, 204) as forward differential signal, output is connected to forward signal receiving system (105), entering to differential input end (211 of input impedance matching unit (121), 212) be connected respectively to primary coil differential input end (201, 202) on, enter to common mode input (213) and be connected on primary coil common mode input (205), output impedance matching unit (122) comprises to common mode input (216) and two and goes out to differential input end (214, 215), go out to differential input end (214, 215) be connected respectively to secondary coil difference output end (203, 204) on, go out to common mode input (216) and be connected on secondary coil common mode input (206).
2. reverse signal transmission mixing arrangement according to claim 1, is characterized in that: reverse signal sends low-pass filter unit (111) through reverse signal and is input on the common mode input (205) of described primary coil again.
3. reverse signal transmission mixing arrangement according to claim 1, is characterized in that: reverse signal sends high pass filter unit (113) through reverse signal and is input on described primary coil common mode input (205) again.
4. reverse signal transmission mixing arrangement according to claim 1, is characterized in that: described secondary coil difference output end (203,204) receives low-pass filter unit (114) as the output of forward differential signal through forward signal and exports to forward signal receiving system (105) again.
5. reverse signal transmission mixing arrangement according to claim 1, is characterized in that: described secondary coil difference output end (203,204) receives high pass filter unit (112) as the output of forward differential signal through forward signal and exports to forward signal receiving system (105) again.
6. according to the reverse signal transmission mixing arrangement described in any one in claim 1 to 5, it is characterized in that: described input impedance matching unit (121) comprises input connecting resistance (1201), input connecting resistance (1202), input common mode electrical level (220), input connecting resistance (1201) and input connecting resistance (1202) are connected respectively to entering between differential input end (211,212) and input common mode electrical level (220) of input impedance matching unit (121), and input common mode electrical level (220) can be any level.
7. according to the reverse signal transmission mixing arrangement described in any one in claim 1 to 5, it is characterized in that: described input impedance matching unit (121) comprises input connecting resistance (1203), input connecting resistance (1204), input connecting resistance (1205), input connecting resistance (1203) and input connecting resistance (1204) are connected respectively to entering to differential input end (211 of input impedance matching unit (121), 212) and enter between common mode input (213), input connecting resistance (1205) is connected to between differential input end (212) and ground, as the build-out resistor of transmission channel (102) impedance.
8. according to the reverse signal transmission mixing arrangement described in any one in claim 1 to 5, it is characterized in that: described output impedance matching unit (122) also comprises output connecting resistance (1301), output connecting resistance (1302), output common mode level (221), output connecting resistance (1301) and output connecting resistance (1302) are connected respectively to going out to differential input end (214 of output impedance matching unit (122), 215) and between output common mode level (221), output common mode level (221) can be any level.
9. according to the reverse signal transmission mixing arrangement described in any one in claim 1 to 5, it is characterized in that: described output impedance matching unit (122) also comprises output connecting resistance (1303), output common mode level (222), output connecting resistance (1303) is connected to going out to differential input end (214 of output impedance matching unit (122), 215) between as difference termination impedance, output common mode level (222) is connected to common mode input (216), common-mode voltage is provided, output common mode level (222) can be any level.
10. according to the reverse signal transmission mixing arrangement described in claim 2 or 4, it is characterized in that: described reverse signal sends low-pass filter unit (111) and forward signal reception low-pass filter unit (114) comprises respectively electric capacity (2410), some resistance (1401) and some switches (3401), switch (3401) is composed in series unit with resistance (1401), after the unit parallel connection of some groups, be connected between input (501) and output (502), electric capacity (2410) is connected between output (502) and ground, the adjustable low pass filter of common composition bandwidth, the adjustment of bandwidth realizes by the break-make of controlling some switches (3401), when needs reduce low-pass filtering bandwidth, increase parallel resistance realization by disconnecting more switches (3401), when needs improve filtering bandwidth, reducing parallel resistance by the more switches of closure (3401) realizes.
11. according to the reverse signal transmission mixing arrangement described in claim 2 or 4, it is characterized in that: described reverse signal sends low-pass filter unit (111) and forward signal reception low-pass filter unit (114) comprises respectively electric capacity (2412), some resistance (1402), some switches (3402), the units in series that some groups of switches (3402) and resistance (1402) compose in parallel, be connected between input (501) and output (502), electric capacity (2412) is connected between output (502) and ground, the adjustable low pass filter of common composition bandwidth, the adjustment of bandwidth realizes by the break-make of controlling some switches (3402), when needs reduce low-pass filtering bandwidth, increase series resistance realization by disconnecting more switches (3402), when needs improve filtering bandwidth, reducing series resistance by the more switches of closure (3402) realizes.
12. according to the signal transmission mixing arrangement described in claim 3 or 5, it is characterized in that: described reverse signal sends high pass filter unit (113) and forward signal reception high pass filter unit (112) comprises respectively electric capacity (2413), some resistance (1403), some switches (3403), some resistance (1404), some switches (3404), some groups of switches (3403) the formed unit of connecting with resistance (1403) is connected between power supply and output (506), some groups of switches (3404) the formed unit of connecting with resistance (1404) is connected between output (506) and ground, electric capacity (2413) is connected between input (505) and output (506), the adjustable high pass filter of common composition bandwidth, the adjustment of bandwidth realizes by the break-make of controlling some switches (3403) and switch (3404), when needs reduce high-pass filtering bandwidth, increase parallel resistance realization by disconnecting more switches (3403) and switch (3404), when needs improve high-pass filtering bandwidth, reducing parallel resistance by the more switches of closure (3403) and switch (3404) realizes, adjust parallel resistance and reach the effect of adjusting common mode output voltage.
13. according to the reverse signal transmission mixing arrangement described in claim 3 or 5, it is characterized in that: described reverse signal sends high pass filter unit (113) and forward signal reception high pass filter unit (112) comprises respectively electric capacity (2414), some resistance (1405), some switches (3405), some resistance (11406) and some switches (3406), some groups of switches (3405) formed unit in parallel with resistance (1405) is connected between power supply and output (506), some groups of switches (3406) formed unit in parallel with resistance (1406) is connected between output (506) and ground, electric capacity (2414) is connected between input (505) and output (506), the adjustable high pass filter of common composition bandwidth, the adjustment of bandwidth realizes by the break-make of controlling some switches (3405) and switch (3406), when needs reduce high-pass filtering bandwidth, increase series resistance realization by disconnecting more switches (3405) and switch (3406), when needs improve high-pass filtering bandwidth, reducing series resistance by the more switches of closure (3405) and switch (3406) realizes, adjust series resistance and reach the effect of adjusting common mode output voltage.
14. according to the reverse signal transmission mixing arrangement described in claim 2 or 4, it is characterized in that: described reverse signal sends low-pass filter unit (111) and forward signal receives low-pass filter unit (114), use active low-pass filter to realize.
15. according to the reverse signal transmission mixing arrangement described in claim 3 or 5, it is characterized in that: described reverse signal sends high pass filter unit (113) and forward signal receives high pass filter unit (112), use active high-pass filter to realize.
16. according to the reverse signal transmission mixing arrangement described in any one in claim 1 to 5, it is characterized in that: described reverse signal sends low-pass filter unit (111) and reverse signal sends high pass filter unit (113), select a property and be integrated in a chip with reverse signal dispensing device (104), adjust filtering bandwidth by register control switch.
17. according to the reverse signal transmission mixing arrangement described in any one in claim 1 to 5, it is characterized in that: in described forward signal reception low-pass filter unit (114) and forward signal reception high pass filter unit (112), select one and be integrated in a chip with forward signal receiving system (105), adjust filtering bandwidth by register control switch.
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| CN201410332125.4A CN104079858B (en) | 2014-07-14 | 2014-07-14 | Reverse signal transmission mixing arrangement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112055951A (en) * | 2018-05-01 | 2020-12-08 | 华为技术有限公司 | Differential termination modulation for backchannel communications |
| CN117411458A (en) * | 2022-09-30 | 2024-01-16 | 中国移动通信有限公司研究院 | Attenuator with adjustable input impedance |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070057670A1 (en) * | 2005-09-12 | 2007-03-15 | Sanyo Electric Co., Ltd. | Signal Detection Circuit of Magnetic Sensor |
| CN101047383A (en) * | 2007-03-20 | 2007-10-03 | 湖南大学 | Current controlled full-balance differential current transmitter |
| CN101694156A (en) * | 2009-10-20 | 2010-04-14 | 电子科技大学 | Dipole acoustic small-signal processing unit |
| WO2011140728A1 (en) * | 2010-05-10 | 2011-11-17 | 国民技术股份有限公司 | Differential analog front end apparatus for low frequency signal detection and transmission system |
| WO2011140730A1 (en) * | 2010-05-10 | 2011-11-17 | 国民技术股份有限公司 | Analog front end device for low frequency signal detection and transmission system |
| CN103187938A (en) * | 2011-12-27 | 2013-07-03 | 国民技术股份有限公司 | Difference simulation front end device for low-frequency signal detection and transmission system |
-
2014
- 2014-07-14 CN CN201410332125.4A patent/CN104079858B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070057670A1 (en) * | 2005-09-12 | 2007-03-15 | Sanyo Electric Co., Ltd. | Signal Detection Circuit of Magnetic Sensor |
| CN101047383A (en) * | 2007-03-20 | 2007-10-03 | 湖南大学 | Current controlled full-balance differential current transmitter |
| CN101694156A (en) * | 2009-10-20 | 2010-04-14 | 电子科技大学 | Dipole acoustic small-signal processing unit |
| WO2011140728A1 (en) * | 2010-05-10 | 2011-11-17 | 国民技术股份有限公司 | Differential analog front end apparatus for low frequency signal detection and transmission system |
| WO2011140730A1 (en) * | 2010-05-10 | 2011-11-17 | 国民技术股份有限公司 | Analog front end device for low frequency signal detection and transmission system |
| CN103187938A (en) * | 2011-12-27 | 2013-07-03 | 国民技术股份有限公司 | Difference simulation front end device for low-frequency signal detection and transmission system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112055951A (en) * | 2018-05-01 | 2020-12-08 | 华为技术有限公司 | Differential termination modulation for backchannel communications |
| CN117411458A (en) * | 2022-09-30 | 2024-01-16 | 中国移动通信有限公司研究院 | Attenuator with adjustable input impedance |
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|---|---|
| CN104079858B (en) | 2016-04-27 |
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