CN2865168Y - Equipment and base system for base station sharing antenna feedback - Google Patents
Equipment and base system for base station sharing antenna feedback Download PDFInfo
- Publication number
- CN2865168Y CN2865168Y CNU2005200677865U CN200520067786U CN2865168Y CN 2865168 Y CN2865168 Y CN 2865168Y CN U2005200677865 U CNU2005200677865 U CN U2005200677865U CN 200520067786 U CN200520067786 U CN 200520067786U CN 2865168 Y CN2865168 Y CN 2865168Y
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- base station
- radio
- antenna
- frequency
- equipment
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Abstract
The utility model discloses a device for base station to share antenna and feeding line that comprises an emission filter, two receiving filters, a low-noise amplifier and a bisecting power distributor, a radio frequency connector connecting with the antenna and two radio-frequency connectors connecting with the base station. The signals received by the antenna will enter into the receiving filter via the radio-frequency connector connecting with the antenna, be amplified by the low-noise amplifier, then the small radio-frequency signal is divided into two signals by the bisecting power distributor, one will be combined with high power signals after passing the receiving filter, and enters into the base station via the radio-frequency connectors connecting with base station; another will enter directly into the base station via the radio-frequency connectors connecting with the base station. The emission signal from the base station will, via the radio-frequency connectors connecting with the base station and then the emission filter, enters into the antenna to emit through the radio frequency connector connecting with the antenna. The utility model also discloses a base station system comprising the sharing antenna and feeding line for a.m. device. The utility model separates signal's receiving and transmitting frequencies, amplifies in reverse way and then combines the receiving and transmitting frequencies. It improves the noise property of reverse receiving with less loss in forward power.
Description
Technical field
The utility model belongs to the wireless communication technique field, is specifically related to the technology that antenna and radio frequency feed line are shared in the mobile communication base station, especially increases another set of base station on the basis of existing base station.
Background technology
Communication systems such as Modern Mobile Communications Systems such as GSM, CDMA2000, WCDMA, TD-SCDMA still adopt multi-carrier mode to improve power system capacity.And the design capacity of communication base station is always limited, needs the base station of two racks expansion capacity in parallel or different manufacturers will be installed together the work of common station; The equipment of the different frequency work of together standing altogether under the enough wide situation of antenna, feeder line frequency range.This has just proposed demand to sharing antenna feeder.Because it is big that the quantities of antenna-feedback system is installed, the engineering cost height; Too much antenna can not be installed sometimes such as iron tower in the position of installed surface, and this has also proposed demand to sharing antenna-feedback system.And generally in every sector (or omnidirectional station) installs two antennas, the emission of resisting multipath fading and doing multicarrier as the receive diversity in the backward channel.
The patent of sharing antenna feeder about multicarrier has U.S. Pat 6522307 B2, and it is described to be with the interconnection between a kind of base station.It mainly is intraconnection.
A kind of is tower amplifier (TMA) with the utility model relevant patent or technology, and tower amplifier is than mature technique, uses morely, but tower amplifier itself is not the shared purposes that is used for antenna feeder equipment.What U.S. Patent number US2005/0136876 A1 described is the technology of making this kind equipment.
Can adopt passive power splitter equipment to realize the antenna feeder sharing functionality in the prior art, but shortcoming is that preceding reverse Insertion Loss is all bigger.
The utility model content
The technical problems to be solved in the utility model is to propose a kind of equipment that antenna feeder is shared in the base station that is used for of low Insertion Loss, and propose the base station system that antenna feeder is shared in a kind of base station on this basis.
The equipment that is used for the shared antenna feeder in two base stations in the utility model, comprise an emission filter, two receiving filters, a low noise amplifier and an one-to-two power splitter, a radio-frequency joint and two radio-frequency joints that are connected the base station that is used to connect antenna;
The signal that antenna receives enters receiving filter by the radio-frequency joint of described connection antenna, after amplifying by described low noise amplifier again, these RF small signals are divided into two paths of signals at described one-to-two power splitter, wherein lead up to and combine with high-power signal behind the described receiving filter, the radio-frequency joint through connecting the base station enters the base station; Another road directly radio-frequency joint through connecting the base station enters the base station;
Transmitting by connecting the radio-frequency joint of base station of base station, again by behind the described emission filter, the radio-frequency joint through connecting antenna enters the antenna emission.
Described low noise amplifier is the low noise amplifier with bypass functionality.
The bypass functionality of described low noise amplifier is realized by radio-frequency (RF) switch.
Described emission filter and receiving filter adopt the coaxial cavity structure with the low Insertion Loss of high Q value.
The receiving filter of described LNA input can further adopt segmentation filtering, again He Cheng method in the too big situation of frequency range span.
The base station system of the shared antenna feeder in the utility model, comprise two cover antenna feeder and two base stations, wherein comprise a duplexer and a receiving filter in each base station, it is characterized in that, also comprise in the above-mentioned the utility model of two covers and be used for the equipment that antenna feeder is shared in the base station, an equipment and a cover antenna feeder that antenna feeder is shared in duplexer in the base station and base station constitute emission/a receptions path, and receiver is used for the base station with another and shares two equipment and that overlap antenna feeders and overlap antenna feeders and constitute another reception path in the base station;
The utility model utilizes the characteristics of communication apparatus transmitting-receiving frequency difference and multicarrier work, adopts wave filter technology that signal is received and dispatched band separation, and oppositely the frequency range merging is received and dispatched in amplification again.Improved the noiseproof feature of reverse reception, but forward power has been had less loss, helped keeping the performances such as covering at former station, and do not influenced the performance of newly-increased base station, antenna feeder is shared in the base station that can be applied to different frequency range.
Description of drawings
Fig. 1 is existing base station equipment and antenna feeder schematic diagram;
Fig. 2 adopts passive power splitter equipment to realize the schematic diagram of the system of shared antenna feeder;
Fig. 3 A is the schematic diagram of common tower amplifier;
Fig. 3 B is the schematic diagram that the equipment of antenna feeder is shared in the base station that is used in the utility model;
Fig. 3 C is an embodiment schematic diagram taking segmentation filtering synthetic again in the utility model when the frequency range span is too big;
Fig. 4 is an embodiment schematic diagram of the base station system of sharing two cover antenna feeders in the utility model;
Embodiment
Come the utility model is elaborated below in conjunction with accompanying drawing.
Fig. 1 is existing base station equipment and antenna feeder schematic diagram.110,120 is two cover antenna feeders of a sector among the figure, is to increase the part that will share behind the base station.111,121 is two width of cloth antennas, the 112, the 122nd, and radio frequency feed line.100 is cover base station equipments, and wherein 101 is the bi-directional device that receive and transmit, and can be made as duplexer, and sign is Tx/Rx, and expression had both been done emission and also done reception; The 102nd, the RF small signals receiving filter is the received RF small-signal, and sign is Rx, and reception is only done in expression; Two antennas are finished the main diversity reception and the multicarrier emission of base station together.
Fig. 2 is the system schematic that the passive power splitter equipment of available technology adopting is realized the shared two cover antenna feeders in two base stations.Among the figure, the 100th, a certain sector, former base station, the 200th, a certain sector of another base station that increases.It is a kind of straightforward procedure that antenna feeder is shared in two cover base stations, and its feature is a bandwidth, and is simple.It requires the emission frequency acceptance band that one-to-two power splitter 210,220 can be by base station 100,200, and power capacity is enough.The shortcoming of this method is the preceding insertion loss that oppositely all can have above 3dB, makes that the transmitting power minimizing of each base station is over half, and oppositely the sensitivity that receives reduces more than the 3dB.Finally may influence the covering and the capacity of former base station and newly-increased base station, may influence bigger network quality.
Fig. 3 A is the structural representation of general tower amplifier, 306, the 308th, radio-frequency joint, the 302nd, the low noise amplifier of band bypass functionality, 307,301,304 3 filters are used to transmit and the separating of received signal, merging, and guarantee that processing and amplifying can operate as normal.307,301 Insertion Loss generally can be less than 1dB on this processing path.But the base station of sharing two cover antenna feeders then must do to received signal along separate routes and handle, and the shunt processing of RF small signals can be brought the insertion loss, can influence the sensitivity of received signal because received signal is needed main diversity interconnection.If earlier RF small signals are done suitable amplification, just can ignore the influence of receiving sensitivity along separate routes again.
Fig. 3 B is based on the reason of Fig. 2 Insertion Loss, proposes a kind of new equipment that reduces the insertion loss of radio frequency path at Fig. 1 scene.313 and 315 is to increase on the basis of Fig. 3 A.The 313rd, the one-to-two power splitter, 315,316 and 318 is radio-frequency joints, the 317th, emission filter.311, the 314th, receiving filter, emission filter and receiving filter can adopt the coaxial cavity structure with the low Insertion Loss of high Q value to realize.The 312nd, the low noise amplifier of band bypass functionality allows 312 frame left side dotted portions replace the LNA path to reduce the Insertion Loss that radio frequency receives path when situations such as non-transformer or low noise amplifier (LNA) fault occur.The function of dotted line can realize that when the LNA irregular working, oppositely Insertion Loss can be bigger with radio-frequency (RF) switch, but the forward direction Insertion Loss is still less.
Transmitting of base station removed antenna through 318,317 emission filters to 316; The received signal of antenna arrives receiving filter 311, low noise amplifier 312, the left side one tunnel of splitter 313,314 receiving filters, 318 joints through 316, has so just formed the bi-directional path of transmitting-receiving.But preceding reverse signal can separate processes, and the low Insertion Loss of filter 317,311 makes this equipment have value.
Fig. 3 C is too wide for fear of Fig. 3 B median filter 311, to such an extent as to when having comprised a certain transmit frequency band, take segmentation filtering, a kind of method that remerges.It is a kind of scheme of 311.The frequency acceptance band that the bandwidth of 314 receiving filters only need meet the base station that is connected among Fig. 3 B gets final product.
Fig. 4 is the schematic diagram of the base station system of sharing two cover antenna feeders in the utility model, and promptly the equipment of application drawing 3B makes two base stations share the schematic diagram of the base station system of two cover antenna feeders.
100 is former base stations among Fig. 4, the 400th, and a cover base station that increases according to actual needs.410 and 420 is two new equipments shown in Fig. 3 B, 417, the 427th, emission filter, the 411,414,421, the 424th, receiving filter, the 412, the 422nd, low noise amplifier, 413, the 423rd, one-to-two power splitter, the 416,418,415,426,428, the 425th, radio-frequency joint.Suppose that original base station 100 is that common antenna is done the emission reception, another slave antenna just receives.It also is only to need common antenna to do emission that another frequency range is adopted in the base station 400 that increases, and another secondary only need receives.As scheme interconnection and just can realize forward signal influence for a short time, also finish reverse main diversity reception and not obvious two receiving sensitivities of overlapping base stations that influence.
Filter for 410,420 the insides of equipment among Fig. 4 has particular requirement, and emission filter 417 is wanted the emission band of base station 100 is passed through, and inserts loss less than 1dB; Emission filter 427 is wanted the emission band of 400 base stations is passed through, and inserts loss less than 1dB.Receiving filter 421 can be by base station 100,400 frequency acceptance band, and 424 need are by the frequency acceptance band of base station 400.Receiving filter 411 can be by base station 100,400 frequency acceptance band, and 414 need are by the frequency acceptance band of base station 100.Power splitter 413,423 can allow the frequency acceptance band of base station 100,400 pass through.Joint 415,425 connects the diversity reception port of two cover base stations respectively.430, the 440th, tie jumper.
Emission filter wants enough high to the inhibition of frequency acceptance band, prevents the LNA vibration; Receiving filter 414,424 Insertion Loss can suitably loosen, and 411,421,414,424 receiving filters want enough high to the inhibition of emission band, guarantee that LNA is not subjected to the high-power influence that transmits.And 411, the inhibition Du Genggao of 421 to 414,424 pairs of transmit frequency bands, because the reason of LNA gain.
Too big two base station frequency band spans, to such an extent as to filter 411,421 has comprised a certain transmit frequency band, then filter 411,421 needs special filter synthetic.
Antenna feeder 110,120 is shared by base station 100,400, but the frequency bandwidth characteristics of antenna feeder must satisfy the frequency band requirement of 2 cover base stations.
Because duplexer in the base station equipment and filter guarantee satisfying system specifications, equipment 410,420 does not need that index is contributed to system is spuious etc., just finish transmitting-receiving separation and necessary band and suppress outward, assurance function is normal, can do smallerly so insert loss.Therefore the low Insertion Loss equipment and the method for the shared antenna feeder in base station have been realized.
Claims (8)
1, a kind of equipment that is used for the shared antenna feeder in base station comprises an emission filter, two receiving filters, a low noise amplifier and an one-to-two power splitter, a radio-frequency joint and two radio-frequency joints that are connected the base station that is used to connect antenna;
The signal that antenna receives enters receiving filter by the radio-frequency joint of described connection antenna, after amplifying by described low noise amplifier again, these RF small signals are divided into two paths of signals at described one-to-two power splitter, wherein lead up to and combine with high-power signal behind the described receiving filter, the radio-frequency joint through connecting the base station enters the base station; Another road directly radio-frequency joint through connecting the base station enters the base station;
Transmitting by connecting the radio-frequency joint of base station of base station, again by behind the described emission filter, the radio-frequency joint through connecting antenna enters the antenna emission.
2, the described equipment that is used for the shared antenna feeder in base station of claim 1 is characterized in that described low noise amplifier is the low noise amplifier with bypass functionality.
3, the described equipment that is used for the shared antenna feeder in base station of claim 2 is characterized in that the bypass functionality of described low noise amplifier is realized by radio-frequency (RF) switch.
4, the described equipment that is used for the shared antenna feeder in base station of claim 1 is characterized in that described emission filter and receiving filter adopt the coaxial cavity structure with the low Insertion Loss of high Q value.
5, a kind of base station system of shared antenna feeder, comprise two cover antenna feeder and two base stations, wherein comprise a duplexer and a receiving filter in each base station, it is characterized in that, comprise that also two covers are used for the equipment that antenna feeder is shared in the base station, an equipment and a cover antenna feeder that antenna feeder is shared in duplexer in the base station and base station constitute emission/a receptions path, and receiver is used for the base station with another and shares two equipment and that overlap antenna feeders and overlap antenna feeders and constitute another reception path in the base station;
The described equipment that is used for the shared antenna feeder in base station comprises an emission filter, two receiving filters, a low noise amplifier and an one-to-two power splitter, a radio-frequency joint and two radio-frequency joints that are connected the base station that is used to connect antenna; The signal that antenna receives enters receiving filter by the radio-frequency joint of described connection antenna, after amplifying by described low noise amplifier again, be divided into two paths of signals at described one-to-two power splitter, one road high-power signal, one road RF small signals, high-power signal enters the base station by described receiving filter after connect the radio-frequency joint of base station, and the RF small signals directly radio-frequency joint through connecting the base station enter the base station; Transmitting by connecting the radio-frequency joint of base station of base station, again by behind the described emission filter, the radio-frequency joint through connecting antenna enters the antenna emission.
6, the base station system of the described shared antenna feeder of claim 6 is characterized in that, the described low noise amplifier that is used for the equipment of the shared antenna feeder in base station is the low noise amplifier with bypass functionality.
7, the described equipment that is used for the shared antenna feeder in base station of claim 7 is characterized in that the bypass functionality of described low noise amplifier is realized by radio-frequency (RF) switch.
8, the base station system of the described shared antenna feeder of claim 6 is characterized in that, described emission filter and the receiving filter that is used for the equipment of the shared antenna feeder in base station adopts the coaxial cavity structure with the low Insertion Loss of high Q value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200677865U CN2865168Y (en) | 2005-11-15 | 2005-11-15 | Equipment and base system for base station sharing antenna feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200677865U CN2865168Y (en) | 2005-11-15 | 2005-11-15 | Equipment and base system for base station sharing antenna feedback |
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| Publication Number | Publication Date |
|---|---|
| CN2865168Y true CN2865168Y (en) | 2007-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2005200677865U Expired - Lifetime CN2865168Y (en) | 2005-11-15 | 2005-11-15 | Equipment and base system for base station sharing antenna feedback |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789805A (en) * | 2010-02-24 | 2010-07-28 | 华为技术有限公司 | Amplifying device and signal processing method based on same |
| CN102325332A (en) * | 2011-07-25 | 2012-01-18 | 芯通科技（成都）有限公司 | Multi-carrier base station coverage extension device system |
| CN102742167A (en) * | 2011-12-09 | 2012-10-17 | 华为技术有限公司 | Multi-band antenna feeder sharing method and base station radio unit |
| CN106797243A (en) * | 2014-10-02 | 2017-05-31 | 株式会社Kmw | The base station apparatus of GSM |
-
2005
- 2005-11-15 CN CNU2005200677865U patent/CN2865168Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789805A (en) * | 2010-02-24 | 2010-07-28 | 华为技术有限公司 | Amplifying device and signal processing method based on same |
| CN101789805B (en) * | 2010-02-24 | 2014-03-12 | 华为技术有限公司 | Amplifying device and signal processing method based on same |
| CN102325332A (en) * | 2011-07-25 | 2012-01-18 | 芯通科技（成都）有限公司 | Multi-carrier base station coverage extension device system |
| CN102325332B (en) * | 2011-07-25 | 2014-01-01 | 成都芯通科技股份有限公司 | Multi-carrier base station coverage extension device system |
| CN102742167A (en) * | 2011-12-09 | 2012-10-17 | 华为技术有限公司 | Multi-band antenna feeder sharing method and base station radio unit |
| CN102742167B (en) * | 2011-12-09 | 2014-07-30 | 华为技术有限公司 | Multi-band antenna feeder sharing method and base station radio unit |
| US8923923B2 (en) | 2011-12-09 | 2014-12-30 | Huawei Technologies Co., Ltd. | Multi-frequency band antenna feeder sharing method and base station radio frequency unit |
| CN106797243A (en) * | 2014-10-02 | 2017-05-31 | 株式会社Kmw | The base station apparatus of GSM |
| CN106797243B (en) * | 2014-10-02 | 2020-09-11 | 株式会社Kmw | Base station device of mobile communication system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070131 |
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| EXPY | Termination of patent right or utility model |