CN102546035A - Signal interference suppression device - Google Patents
Signal interference suppression device Download PDFInfo
- Publication number
- CN102546035A CN102546035A CN2010105960983A CN201010596098A CN102546035A CN 102546035 A CN102546035 A CN 102546035A CN 2010105960983 A CN2010105960983 A CN 2010105960983A CN 201010596098 A CN201010596098 A CN 201010596098A CN 102546035 A CN102546035 A CN 102546035A
- Authority
- CN
- China
- Prior art keywords
- duplexer
- port
- signal
- mixer
- attenuator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Transceivers (AREA)
Abstract
The invention discloses a signal interference suppression device, which comprises a first duplexer, a second duplexer, a third duplexer, a fourth duplexer, a first combiner, a second combiner, a first circulator, a second circulator, a first attenuator and a second attenuator, wherein a TX/RX port of the first duplexer is connected with a first port of a base station; a TX port of the first duplexer is connected to the first combiner through the first circulator, and an RX port of the first duplexer is connected to the second combiner through the first attenuator; a TX/RX port of the second duplexer is connected with a second port of the base station, a TX port of the second duplexer is connected to the first combiner through the second circulator, and an RX port of the second duplexer is connected to the second combiner through the second attenuator; the first combiner is connected with a TX port of the third duplexer and a TX port of the fourth duplexer; the second combiner is connected with an RX port of the third duplexer and an RX port of the fourth duplexer; a TX/RX port of the third duplexer is connected with a first port of an antenna feed system; and a TX/RX port of the fourth duplexer is connected with a second port of the antenna feed system.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of signal interference suppression equipment.
Background technology
At present, in indoor distributed system, the information source carrier signal of the base station of homologous ray (also can be described as base transceiver station, BaseTransceiver Station abbreviates BTS as) covers after all closing the road through electric bridge mostly.
Fig. 1 is that the sketch map that electric bridge 18 is connected with antenna-feedback system is passed through in the base station.In structure shown in Figure 1, after electric bridge 18 need close the road to the downstream signal from the base station, the mode with 4 tunnel offered antenna-feedback system, and electric bridge also need carry out the upward signal from antenna-feedback system offering the base station after the shunt.
But there is following defective in the structure shown in Fig. 1:
(1) because the isolation of the input port of electric bridge is not high, therefore, the system interference problem appears in two transmitting-receiving mouths easily that close the base station on road through electric bridge; (2) electric bridge can't realize suppressing the outer spuious interference to uplink receiver of band of downstream signal; Along with descending carrier quantity and transmitting power increase; The band of downstream signal is outer spuious also along with becoming big, thus the low noise that can cause uplink receiver raise, cause uplink receiver the barrage jamming phenomenon to occur; (3) electric bridge itself does not possess the inhibit feature to interference band, the interference that is therefore come from the outside easily; (4) when the CA cable assembly intermodulation index in electric bridge and the covering system is relatively poor, the intermodulation level that downstream signal produces can produce Intermodulation Interference to the uplink receiver of corresponding band system.
Can find out that various interference appear in structure shown in Figure 1 easily, and structure shown in Figure 1 can not occur suppressing to various interference.
Be connected the problem of exist disturbing and can't suppressing interference with the electric bridge of antenna-feedback system to base station in the correlation technique, do not propose effective solution at present as yet.
Summary of the invention
Be connected the problem of exist disturbing and can't suppressing interference with the electric bridge of antenna-feedback system to base station in the correlation technique; The present invention proposes a kind of signal interference suppression equipment, can effectively suppress to receive and dispatch the interference between the port, the spuious interference to upward signal of tyre, external interference and the Intermodulation Interference of downstream signal.
Technical scheme of the present invention is achieved in that
According to the invention provides a kind of signal interference suppression equipment; This device is connected between base station port and the antenna-feedback system, and this signal interference suppression equipment comprises first duplexer, second duplexer, the 3rd duplexer, the 4th duplexer, first mixer, second mixer, first circulator, second circulator, first attenuator and second attenuator;
Wherein, The TX/RX port of said first duplexer is connected with first port of base station; The TX port of said first duplexer is connected to said first mixer via said first circulator, and the RX port of said first duplexer is connected to said second mixer via said first attenuator; Said first circulator is used for the signal that flows to said first mixer from said first duplexer is filtered, and is used for the signal that flows to said first duplexer from said first mixer is isolated; Said first attenuator is used for the signal that flows to said first duplexer from said second mixer is decayed;
The TX/RX port of said second duplexer is connected with second port of base station; The TX port of said second duplexer is connected to said first mixer via said second circulator, and the RX port of said second duplexer is connected to said second mixer via said second attenuator; Said second circulator is used for the signal that flows to said first mixer from said second duplexer is filtered, and is used for the signal that flows to said second duplexer from said first mixer is isolated; Said second attenuator is used for the signal that flows to said second duplexer from said second mixer is decayed;
Said first mixer is connected with the TX port of said the 3rd duplexer and the TX port of said the 4th duplexer; Said second mixer is connected with the RX port of said the 3rd duplexer and the RX port of said the 4th duplexer; The TX/RX port of said the 3rd duplexer is connected with first port of antenna-feedback system; The TX/RX port of said the 4th duplexer is connected with second port of antenna-feedback system; Wherein, Said first mixer is used for the signal from said first duplexer and said second duplexer closed and exports said the 3rd duplexer and said the 4th duplexer to after handle on the road, and said second mixer is used for the signal from said the 3rd duplexer and said the 4th duplexer closed and exports said first duplexer and said second duplexer to after handle on the road.
Preferably, said first attenuator and said second attenuator are adjustable attenuator.And the adjustable damping scope of said first attenuator and said second attenuator can be for 0 to 30dB.
Preferably, the isolation of said first circulator and said second circulator is 20dB.
Alternatively, said first mixer and said second mixer are electric bridge.
Preferably, the interport isolation of said first mixer and said second mixer is 30dB.
The present invention can realize separated transmission to transmitting (downstream signal) and receiving signal (upward signal) by duplexer and mixer; And through attenuator and circulator realization filtration and decay; The system interference problem that causes crosstalk phenomenon appears and in the downstream signal that prevents to receive and dispatch mouthful; Avoid the spuious interference of tyre of downstream signal, reached and suppressed between the transmitting-receiving port and the purpose of disturbing between upward signal and the downstream signal upward signal, and; Attenuator can also reduce the level value that receiver receives signal, prevents that the barrage jamming phenomenon from appearring in receiver; In addition, because the present invention has adopted duplexer, make receive-transmit isolation higher; Avoid receiving and dispatching the interference between the port; Can make because of the Intermodulation Interference level that occurs in the network is able to suppress, finally realize rational signal transmitting and receiving isolation, can also avoid the interference between the different base station simultaneously.
Description of drawings
The sketch map that the base station is connected with antenna-feedback system through electric bridge in Fig. 1 prior art;
Fig. 2 is the block diagram according to the signal interference suppression equipment of the embodiment of the invention.
Embodiment
To there being the problem of disturbing and can't suppressing interference being connected of base station in the correlation technique and antenna-feedback system; The present invention proposes; Realize separated transmission by duplexer and mixer to transmitting (downstream signal) and receiving signal (upward signal); And through attenuator and circulator realization filtration and decay, thereby suppressed between the transmitting-receiving port and the interference between upward signal and the downstream signal, can also avoid the interference between the different base station simultaneously.
To combine accompanying drawing to describe embodiments of the invention in detail below.In the description hereinafter, being down direction (forward) with the base station to the direction of antenna-feedback system, is up direction (reverse) with antenna-feedback system to the direction of base station.
According to embodiments of the invention, a kind of signal interference suppression equipment is provided.
As shown in Figure 2; Signal interference suppression equipment 200 according to the present invention is connected between base station port and the antenna-feedback system; Wherein, Port one 1 be a base station port with port one 2, and port one 3 and port one 4 are the port of antenna-feedback system, and signal interference suppression equipment 200 according to the present invention comprises first duplexer 1, second duplexer 2, the 3rd duplexer 3, the 4th duplexer 4, first mixer 5, second mixer 6, first circulator 7, second circulator 8, first attenuator 9 and second attenuator 10.
Wherein, Duplexer all comprises three ports, that is, and and TX port, RX port and TX/RX port; As shown in Figure 1; The TX/RX port of first duplexer 1 is connected with port one 1, and the TX port of first duplexer is connected to second mixer 6 via the RX port that first circulator 7 is connected to first mixer, 5, the first duplexers 1 via first attenuator 9; First circulator 7 is used for the signal that flows to first mixer 5 from first duplexer 1 is filtered (thereby interference band of filtered signal), and is used for the signal that flows to first duplexer 1 from first mixer 5 is isolated; First attenuator 9 is used for the signal that flows to first duplexer 1 from second mixer 6 is decayed;
The TX/RX port of second duplexer 2 is connected with port one 2, and the TX port of second duplexer 2 is connected to second mixer 10 via the RX port that second circulator 8 is connected to first mixer, 5, the second duplexers 2 via second attenuator 10; Second circulator 8 is used for the signal that flows to first mixer 5 from second duplexer 2 is filtered, and is used for the signal that flows to second duplexer 2 from first mixer 5 is isolated; Second attenuator 10 is used for the signal that flows to second duplexer 2 from second mixer 6 is decayed;
Pass through said apparatus; Can realize separated transmission to transmitting (downstream signal) and receiving signal (upward signal) by duplexer and mixer; And realize filtering and decay through attenuator and circulator, the system interference problem that causes crosstalk phenomenon appears and in the downstream signal that prevents to receive and dispatch mouth, avoids the spuious interference to upward signal of tyre of downstream signal; Reached and suppressed between the transmitting-receiving port and the purpose of disturbing between upward signal and the downstream signal; And attenuator can also reduce the level value that receiver receives signal, prevents that the barrage jamming phenomenon from appearring in receiver; In addition, because the present invention has adopted duplexer, make receive-transmit isolation higher; Avoid receiving and dispatching the interference between the port; Can make because of the Intermodulation Interference level that occurs in the network is able to suppress, finally realize rational signal transmitting and receiving isolation, can also avoid the interference between the different base station simultaneously.
That is to say that two above-mentioned mixers are respectively applied for and the two-way echo signal are closed Lu Houzai is capable to be exported along separate routes; Two duplexer groups; Each duplexer group comprises two duplexers; First group of duplexer comprises first duplexer 1 and second duplexer 2; Second group of duplexer comprises the 3rd duplexer 1 and the 4th duplexer 2, and in each duplexer group, two duplexers are used for respectively echo signal being separated from the carrier signal of public port input separately; Then respectively echo signal is transferred to the mixer that exclusively enjoys and close the road, export two duplexers in another duplexer group along separate routes to continue transmission by this mixer again along two duplexers public port separately; Be used to send just making progress of echo signal in the first duplexer group; All be serially connected with circulator between its two duplexers and connected first mixer; And same duplexer group be used for the reverse of receiving target signal, be serially connected with attenuator between its two duplexers and connected second mixer.
Each duplexer of each duplexer group all has public port (TX/RX), downlink port (TX port) and uplink port (RX port); The common port of two duplexers of the first duplexer group electrically connects with the base station respectively, with the carrier signal of obtaining the base station and isolate wherein downstream signal as echo signal through two duplexer downlink transfer of first mixer and the second duplexer group to antenna-feedback system; And the common port of two duplexers of the second duplexer group electrically connects with antenna-feedback system respectively, with the carrier signal of obtaining antenna-feedback system and isolate wherein upward signal as echo signal through two duplexer uplink of second mixer and the first duplexer group to the base station.
On electric connection structure; Each mixer all has two input ports and two output ports; Two duplexers downlink port separately is connected with two input ports of first mixer respectively in the first duplexer group, and two output ports of first mixer are connected with two duplexers downlink port separately of the second duplexer group respectively; Two duplexers uplink port separately is connected with two input ports of second mixer respectively in the second duplexer group, and two output ports of second mixer are connected with two duplexers uplink port separately of the first duplexer group respectively.
Preferably, for the degree that guarantees to decay can be applicable to multiple different scene, first attenuator and said second attenuator are adjustable attenuator.And preferably, the adjustable damping scope of first attenuator and said second attenuator is 0 to 30dB.
Alternatively, the isolation of above-mentioned first circulator and said second circulator (isolation of up direction and down direction transmission) is 20dB.
Alternatively, first above-mentioned mixer and said second mixer can be electric bridge, and the interport isolation of first mixer and second mixer can be 30dB.
As shown in Figure 2; Through duplexer 1 to 4 being set and on the downlink path, inserting circulator 7 and 8; Improve system interval from and transmitting-receiving isolate, can effectively avoid the downstream signals of two transmitting-receiving ports crosstalk phenomenon to occur, and then avoid the system interference that causes thus; And, can reduce the level value that receiver receives through in up reception path, inserting adjustable attenuator 9 and 10, prevent that the barrage jamming phenomenon from appearring in receiver; In addition, because that duplexer transmitting-receiving is isolated is higher, be able to suppress so can make because of the Intermodulation Interference level that occurs in the network.
Signal interference suppression equipment 200 shown in Figure 2 is when handling downstream signal; Be to electrically connect with the base station respectively with port one 2 by two duplexers of first duplexer group public port 11 separately; Obtain the base station information source; The descending carrier signal of input base station closes the road signal to antenna-feedback system and exported with port one 4 forwards with 2 separately public ports 13 by two duplexers 1 of the second duplexer group.Otherwise; When handling upward signal; Two duplexers public port 13 separately of the second duplexer group that electrically connects with antenna-feedback system and port one 4 obtain the up-link carrier signal of antenna-feedback systems, again by two duplexers public port 11 and the port one 2 reverse up base stations that export to separately of the first duplexer group.
Realize separating of uplink and downlink signals through the duplexer 1 of the first duplexer group with duplexer 2 via public port 11 respectively with the two-way descending carrier signal of port one 2 inputs; The downstream signal of separating as echo signal through duplexer 1 and duplexer 2 downlink port separately; Insert two input ports of first electric bridge 5 respectively through circulator 7 and circulator 8 backs; Can find out by Fig. 2; Circulator 7 serial connections are gone between the duplexer 1 and first electric bridge 5, and circulator 8 serial connections are gone between the duplexer 2 and first electric bridge 5.
The electric bridge that the present invention adopted comprises first electric bridge 5 and second electric bridge 6, all uses as mixer, also has the function of Xie Helu certainly.A more excellent configuration is, electric bridge 5 and 6 interport isolation are restricted to 30dB, certainly, also allow it to do suitable change, such as 20dB-40dB, and in theory, isolation is high more, and is good more to spuious inhibition effect.Because the circulator 7 that the present invention adopted; 8 have the signal forward transmitted and reverse transmission has the isolation characteristic of 20dB; Therefore the reflected signal 20dB that on former path, decays; Two duplexers 1 of the base station first duplexer group and 2 isolated two-way downstream signals can be realized the isolation greater than 45dB under first electric bridge 5 and circulator 7 and 8 effect, prevent interference phenomenon appearance between input system.
As previously mentioned; First electric bridge 5 has the effect of closing road/shunt; The downstream signal of two-way input is closed the signal that the Lu Houzai merit is divided output two-way constant amplitude homophase, and the two-way downstream signal of two output ports through first electric bridge 5 after will be along separate routes exports the duplexer 3 of the second duplexer group respectively to and the downlink port of duplexer 4 carries out the signal covering after the public port of this duplexer 3 and 4 exports antenna-feedback system to.
Up-link carrier signal in the antenna-feedback system is inputed in the present networks unit with port one 4 by duplexer in the second duplexer group 3 and duplexer 4 public port 13 separately; Upward signal is separated from carrier signal through duplexer 3 and duplexer 4 as echo signal; The two-way upward signal of separating inserts two input ports of electric bridge; Then close the road through second electric bridge 6, second electric bridge 6 closes Lu Hougong and divides two output port outputs of the two-way constant amplitude in-phase signal of output from second electric bridge 6, passes through adjustable attenuator 9 and adjustable attenuator 10 respectively; Adjustable attenuator 9 and 10 can realize regulating according to the disturbed condition of base station the degree of decay of upward signal; The degree of amplitude modulation (that is, attenuation range) of the adjustable attenuator that the present invention adopts can be 0-30dB, the 1dB stepping.
The inhibition that duplexer 1 to 4 all has adjacent or other system both can prevent the outer spuious interference that adjacent base station is caused of band of itself, can reduce the interference of adjacent base station to this base station again; And duplexer 1 to 4 has higher transmitting-receiving isolates, and therefore, can suppress the influence that receiver is produced because of the Intermodulation Interference that produces in the network.In present a lot of scenes; The distribution density of antenna is bigger, and to can't not producing bigger influence after the less decay of upward signal power to the effective coverage range of system, therefore; The setting of attenuator can't influence the receptivity of antenna, also can not produce extra loss.
Therefore; Above-mentioned principle according to this programme; Only need suitably change, can make said apparatus of the present invention be applicable to the GSM of different frequency range, standard, therefore possess applicability preferably components and parts such as duplexer, electric bridge, circulator, adjustable attenuators; Finally make reference carrier signal realize the interference phenomenon of closing the road and overcoming intermediate conveyor, improved the reliability of covering system and the critical sales index of network operation (KPI).
Pass through said apparatus; Adopt multisystem to insert and isolate distribution technique with last/downstream signal; Can filter downstream signal and upward signal is isolated by circulator; Can decay to upward signal by attenuator in addition, improve the transmitting-receiving of system and isolate, can effectively reduce down transmitting power and become big and the clutter interference to uplink receiver that bring; The system interference problem that causes crosstalk phenomenon appears and in the downstream signal that prevents to receive and dispatch mouthful, avoids the spuious interference to upward signal of tyre of downstream signal; And attenuator can also reduce the level value that receiver receives signal, prevents that the barrage jamming phenomenon from appearring in receiver; In addition; Because the present invention has adopted duplexer, makes receive-transmit isolation higher, avoids receiving and dispatching the interference between the port; And can make because of the Intermodulation Interference level that occurs in the network and be able to suppress; Thereby reach the purpose that suppresses various interference, make reference carrier signal realize the interference phenomenon of closing the road and overcoming intermediate conveyor, thereby improve the reliability of covering system and the critical sales index (KPI) of network operation.
In sum; The present invention can realize separated transmission to transmitting (downstream signal) and receiving signal (upward signal) by duplexer and mixer; And realize filtering and decay through attenuator and circulator, the system interference problem that causes crosstalk phenomenon appears and in the downstream signal that prevents to receive and dispatch mouth, avoids the spuious interference to upward signal of tyre of downstream signal; Reached and suppressed between the transmitting-receiving port and the purpose of disturbing between upward signal and the downstream signal; And attenuator can also reduce the level value that receiver receives signal, prevents that the barrage jamming phenomenon from appearring in receiver; In addition, because the present invention has adopted duplexer, make receive-transmit isolation higher; Avoid receiving and dispatching the interference between the port; Can make because of the Intermodulation Interference level that occurs in the network is able to suppress, finally realize rational signal transmitting and receiving isolation, can also avoid the interference between the different base station simultaneously.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. signal interference suppression equipment; Be connected between base station port and the antenna-feedback system; It is characterized in that said signal interference suppression equipment comprises first duplexer, second duplexer, the 3rd duplexer, the 4th duplexer, first mixer, second mixer, first circulator, second circulator, first attenuator and second attenuator;
Wherein, The TX/RX port of said first duplexer is connected with first port of base station; The TX port of said first duplexer is connected to said first mixer via said first circulator, and the RX port of said first duplexer is connected to said second mixer via said first attenuator; Said first circulator is used for the signal that flows to said first mixer from said first duplexer is filtered, and is used for the signal that flows to said first duplexer from said first mixer is isolated; Said first attenuator is used for the signal that flows to said first duplexer from said second mixer is decayed;
The TX/RX port of said second duplexer is connected with second port of base station; The TX port of said second duplexer is connected to said first mixer via said second circulator, and the RX port of said second duplexer is connected to said second mixer via said second attenuator; Said second circulator is used for the signal that flows to said first mixer from said second duplexer is filtered, and is used for the signal that flows to said second duplexer from said first mixer is isolated; Said second attenuator is used for the signal that flows to said second duplexer from said second mixer is decayed;
Said first mixer is connected with the TX port of said the 3rd duplexer and the TX port of said the 4th duplexer; Said second mixer is connected with the RX port of said the 3rd duplexer and the RX port of said the 4th duplexer; The TX/RX port of said the 3rd duplexer is connected with first port of antenna-feedback system; The TX/RX port of said the 4th duplexer is connected with second port of antenna-feedback system; Wherein, Said first mixer is used for the signal from said first duplexer and said second duplexer closed and exports said the 3rd duplexer and said the 4th duplexer to after handle on the road, and said second mixer is used for the signal from said the 3rd duplexer and said the 4th duplexer closed and exports said first duplexer and said second duplexer to after handle on the road.
2. signal interference suppression equipment according to claim 1 is characterized in that, said first attenuator and said second attenuator are adjustable attenuator.
3. signal interference suppression equipment according to claim 2 is characterized in that, the adjustable damping scope of said first attenuator and said second attenuator is 0 to 30dB.
4. signal interference suppression equipment according to claim 1 is characterized in that, the isolation of said first circulator and said second circulator is 20dB.
5. signal interference suppression equipment according to claim 1 is characterized in that, said first mixer and said second mixer are electric bridge.
6. signal interference suppression equipment according to claim 5 is characterized in that, the interport isolation of said first mixer and said second mixer is 30dB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105960983A CN102546035A (en) | 2010-12-10 | 2010-12-10 | Signal interference suppression device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105960983A CN102546035A (en) | 2010-12-10 | 2010-12-10 | Signal interference suppression device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102546035A true CN102546035A (en) | 2012-07-04 |
Family
ID=46352078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105960983A Pending CN102546035A (en) | 2010-12-10 | 2010-12-10 | Signal interference suppression device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102546035A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187985A (en) * | 2011-12-27 | 2013-07-03 | 中国移动通信集团公司 | Communication equipment and communication system |
| CN103368588A (en) * | 2012-03-28 | 2013-10-23 | 中兴通讯股份有限公司 | Base station uplink external interference processing method, base station uplink external interference processing apparatus and base station uplink external interference processing system |
| CN103607235A (en) * | 2013-08-27 | 2014-02-26 | 京信通信技术(广州)有限公司 | Antenna feed system access device and antenna feed system |
| CN103973376A (en) * | 2013-01-24 | 2014-08-06 | 中兴通讯股份有限公司 | Transmitting cross modulation device and method of test terminal |
| CN104577265A (en) * | 2014-12-22 | 2015-04-29 | 成都赛纳赛德科技有限公司 | Multiplexer group with circulator |
| WO2015077938A1 (en) * | 2013-11-27 | 2015-06-04 | 华为技术有限公司 | Co-frequency range combiner/splitter and multi-system combining platform |
| WO2015158221A1 (en) * | 2014-04-14 | 2015-10-22 | 华为技术有限公司 | Combiner, base station, signal combiner system and signal transmission method |
| CN105244584A (en) * | 2015-10-30 | 2016-01-13 | 世达普(苏州)通信设备有限公司 | Link structure capable of improving return loss of POI output port |
| CN112398490A (en) * | 2019-08-14 | 2021-02-23 | 启碁科技股份有限公司 | Communication system and communication method |
| CN114696055A (en) * | 2022-04-02 | 2022-07-01 | 京信射频技术(广州)有限公司 | Multi-path same-frequency combiner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6934562B1 (en) * | 1999-10-08 | 2005-08-23 | Bellsouth Intellectual Property Corporation | System for coupling a mobile radio service base station to an antenna |
| CN101321330A (en) * | 2008-07-22 | 2008-12-10 | 京信通信系统（中国）有限公司 | Same-frequency band combination and shunt circuit composite unit, apparatus and method |
| CN201213264Y (en) * | 2008-06-26 | 2009-03-25 | 京信通信系统（中国）有限公司 | Multi-system access platform |
| CN201616916U (en) * | 2009-12-31 | 2010-10-27 | 重庆汇桥通信技术有限公司 | Repeater based on GSM time slot control |
-
2010
- 2010-12-10 CN CN2010105960983A patent/CN102546035A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6934562B1 (en) * | 1999-10-08 | 2005-08-23 | Bellsouth Intellectual Property Corporation | System for coupling a mobile radio service base station to an antenna |
| CN201213264Y (en) * | 2008-06-26 | 2009-03-25 | 京信通信系统（中国）有限公司 | Multi-system access platform |
| CN101321330A (en) * | 2008-07-22 | 2008-12-10 | 京信通信系统（中国）有限公司 | Same-frequency band combination and shunt circuit composite unit, apparatus and method |
| CN201616916U (en) * | 2009-12-31 | 2010-10-27 | 重庆汇桥通信技术有限公司 | Repeater based on GSM time slot control |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187985B (en) * | 2011-12-27 | 2015-05-27 | 中国移动通信集团公司 | Communication equipment and communication system |
| CN103187985A (en) * | 2011-12-27 | 2013-07-03 | 中国移动通信集团公司 | Communication equipment and communication system |
| CN103368588A (en) * | 2012-03-28 | 2013-10-23 | 中兴通讯股份有限公司 | Base station uplink external interference processing method, base station uplink external interference processing apparatus and base station uplink external interference processing system |
| CN103973376A (en) * | 2013-01-24 | 2014-08-06 | 中兴通讯股份有限公司 | Transmitting cross modulation device and method of test terminal |
| CN103607235A (en) * | 2013-08-27 | 2014-02-26 | 京信通信技术(广州)有限公司 | Antenna feed system access device and antenna feed system |
| WO2015077938A1 (en) * | 2013-11-27 | 2015-06-04 | 华为技术有限公司 | Co-frequency range combiner/splitter and multi-system combining platform |
| CN105164945A (en) * | 2013-11-27 | 2015-12-16 | 华为技术有限公司 | Co-frequency range combiner/splitter and multi-system combining platform |
| CN105164945B (en) * | 2013-11-27 | 2017-11-28 | 华为技术有限公司 | Same-frequency band combination shunt and multisystem mixing platform |
| US9960749B2 (en) | 2013-11-27 | 2018-05-01 | Huawei Technologies Co., Ltd. | Intra-band combiner-divider and multisystem combining platform |
| WO2015158221A1 (en) * | 2014-04-14 | 2015-10-22 | 华为技术有限公司 | Combiner, base station, signal combiner system and signal transmission method |
| CN104577265A (en) * | 2014-12-22 | 2015-04-29 | 成都赛纳赛德科技有限公司 | Multiplexer group with circulator |
| CN105244584A (en) * | 2015-10-30 | 2016-01-13 | 世达普(苏州)通信设备有限公司 | Link structure capable of improving return loss of POI output port |
| CN112398490A (en) * | 2019-08-14 | 2021-02-23 | 启碁科技股份有限公司 | Communication system and communication method |
| CN114696055A (en) * | 2022-04-02 | 2022-07-01 | 京信射频技术(广州)有限公司 | Multi-path same-frequency combiner |
| CN114696055B (en) * | 2022-04-02 | 2023-10-27 | 京信射频技术(广州)有限公司 | Multipath same-frequency combiner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102546035A (en) | Signal interference suppression device | |
| CN104067534B (en) | Wireless communication networks | |
| CN101156279B (en) | Diversity reception for co-siting base stations | |
| CN102427373A (en) | WiFi/WiMAX device | |
| CN106454560A (en) | Multi-business digital light distribution system and multi-business capacity scheduling method | |
| van Liempd et al. | An electrical-balance duplexer for in-band full-duplex with<-85dBm in-band distortion at+ 10dBm TX-power | |
| CN105164945B (en) | Same-frequency band combination shunt and multisystem mixing platform | |
| CN109474921B (en) | Ad hoc network emergency communication system and communication method thereof | |
| CN102611469B (en) | A kind of phase-shift filtering method | |
| CN210075233U (en) | Communication device | |
| US9048931B2 (en) | Method and arrangement for feeder sharing in a telecommunication system | |
| CN207638010U (en) | Compact variable phase AAE active antenna element | |
| CN202269021U (en) | Multi-system access platform for airport communication | |
| CN209949102U (en) | Low-intermodulation multi-system combiner | |
| CN209748549U (en) | Interference cancellation device based on interference cancellation | |
| CN110224704B (en) | Radio frequency system and base station equipment | |
| CN108282165B (en) | Wireless communication system architecture | |
| CN108400789B (en) | Multi-system combiner platform and method for improving inter-modulation of multi-system combiner platform | |
| CN110365369A (en) | A kind of power carrier communication system for supporting long distance transmission | |
| CN100388825C (en) | Signal loop device and base-station common antenna-feedback system using same | |
| CN107371279A (en) | A kind of base station radio-frequency device | |
| CN216016855U (en) | MIMO low-frequency broadband transceiving circuit structure | |
| CN110545114B (en) | Railway wireless communication terminal based on LTE-R | |
| CN103165967B (en) | A kind of coupler and the common transport system based on repeater room subsystem | |
| CN110474655B (en) | Dual-mode wireless communication device and railway vehicle-mounted equipment comprising same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120704 |