CN113014286A - Portable terminal signal amplifier - Google Patents
Portable terminal signal amplifier Download PDFInfo
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- CN113014286A CN113014286A CN202110174974.1A CN202110174974A CN113014286A CN 113014286 A CN113014286 A CN 113014286A CN 202110174974 A CN202110174974 A CN 202110174974A CN 113014286 A CN113014286 A CN 113014286A
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- antenna
- duplexers
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- amplifier
- duplexer
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- 230000003321 amplification Effects 0.000 claims abstract description 37
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 37
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 23
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
Abstract
The embodiment of the invention provides a portable terminal signal amplifier, which comprises: a donor antenna, a bidirectional amplifier, and a retransmission antenna; the donor antenna and the bidirectional amplifier are integrated into a whole, and the retransmission antenna is connected to the bidirectional amplifier through a coaxial cable of 1-3 meters; the bidirectional amplifier includes a plurality of first duplexers connected to a donor antenna, a plurality of second duplexers connected to the retransmission antenna, a downlink amplification link, and an uplink amplification link; a plurality of first duplexers having downstream ports coupled and connected to said second duplexers by one of said downstream amplifying links, and a plurality of second duplexers having upstream ports coupled and connected to said first duplexers by at least one of said upstream amplifying links; the downlink amplification link may cover one or more frequency bands of the terminal, and the entire uplink amplification link may cover one or more frequency bands of the terminal. The portable terminal signal amplifier has the advantages of small volume, light weight, low cost and portability.
Description
Technical Field
The invention relates to the technical field of signal enhancement, in particular to a portable terminal signal amplifier.
Background
For weak areas or blind areas covered by mobile communication signals, the method adopted by the prior art is usually to add base station coverage or adopt a repeater station for supplementary coverage, the cost of the newly added base station is far higher than the obtained benefit for areas with few user terminals or complex buildings and terrains, and aiming at the size of the area needing to be supplemented coverage, the method of adopting the repeater stations with different specifications for supplementary coverage undoubtedly has the advantages of cost and convenience, but at present, even the smallest repeater station also needs to be installed more complexly, an outdoor antenna (usually at the height of a roof and the like) needs to be installed at the position with higher signal strength outdoors, a coaxial cable with the length of ten meters to dozens of meters passes through an outer wall to connect signals received by the outdoor antenna to an indoor signal amplifier host, an AC/DC power adapter supplies power to the amplifier, the output of the amplifier is directly connected with the indoor antenna through another cable, and transmitting the amplified base station signal to an indoor terminal. In order to avoid self-excitation caused by insufficient isolation of the indoor and outdoor antennas, the indoor antenna also needs to be fixed in position and direction, and the use convenience is limited to a certain extent.
As shown in fig. 1, a schematic structural diagram of a conventional mobile phone signal amplifier is shown, the principle of the mobile phone signal amplifier is that an outdoor antenna (donor antenna) 101 receives a base station signal, the base station signal enters an indoor multiband bidirectional amplifier 103 through a coaxial cable 102, downlink signals of each frequency band are separated and transmitted to a downlink port of a duplexer (e.g. duplexer 181) of a corresponding frequency band by a multiplexing/splitting network 180, and then are respectively connected to corresponding downlink amplification links (e.g. a downlink amplification link formed by an amplification unit 111 and an amplification unit 112), the downlink signals are amplified and combined into one path by a combining/splitting network 170, and are transmitted from an indoor antenna (retransmission antenna) 104 to a nearby terminal 110, and the mobile phone signal amplifier further includes a power module 108, which is connected to an AC/DC power adapter 106 through a cable 107 to supply power. Similarly, the uplink signal sent by the terminal 110 enters the bidirectional amplifier 103 through the indoor antenna 104 for amplification, and specifically, the uplink signal is transmitted to the multiplexing/demultiplexing network 190 through the indoor antenna 104 for high-low frequency demultiplexing, and then sent to the corresponding duplexer (e.g., the duplexer 191), amplified by the uplink amplifier link (e.g., the uplink amplifier link formed by the amplifying unit 113 and the amplifying unit 114) and transmitted to the duplexer 181, and then sent to the base station through the multiplexing/demultiplexing network 180, the coaxial cable 102, and the outdoor antenna 101. Among them, the isolation between the indoor antenna and the outdoor antenna is an important index, which is closely related to the directivity of the antennas and the installation positions, orientations, shelters, etc. of the two antennas. If the isolation of the antenna is less than the gain of the amplifier, the signal sent to the terminal by the indoor antenna is received and amplified by the outdoor antenna and then sent out by the indoor antenna, and the self-excitation is formed by repeating the steps and continuously enhancing the steps. The self-excited signal is a strong interference signal that does not contain any useful information and can severely interfere with the communication between the user and the base station, even causing the entire sector of the base station to be inoperable.
Disclosure of Invention
The invention provides a portable terminal signal amplifier, and aims to provide a portable terminal signal amplifier.
The embodiment of the invention provides a portable terminal signal amplifier, which comprises: a donor antenna, a bidirectional amplifier, and a retransmission antenna;
the donor antenna is integrated with the bidirectional amplifier, and the retransmission antenna is connected to the bidirectional amplifier through a coaxial cable of 1-3 meters;
the bidirectional amplifier includes a plurality of first duplexers connected to the donor antenna, a plurality of second duplexers connected to the retransmission antenna, a downlink amplification link, and an uplink amplification link;
the downstream ports of the first duplexers are coupled and connected to the second duplexer by one of the downstream amplification links, and the upstream ports of the second duplexers are coupled and connected to the first duplexer by at least one of the upstream amplification links;
the downlink amplification link may cover one or more frequency bands of the terminal, and the entire uplink amplification link may cover one or more frequency bands of the terminal.
Preferably, the plurality of first duplexers includes: a first low-band duplexer and a first high-band duplexer.
Preferably, the plurality of second duplexers includes: a second low band duplexer corresponding to the low band of the terminal and a second high band duplexer corresponding to the high band of the terminal;
the second low-band duplexer is connected to the first duplexer through a low-band uplink amplifying link covering a low band;
the second high-band duplexer is connected to the first duplexer through a high-band uplink amplifying link covering a high band.
Preferably, the retransmission antenna is connected to the bidirectional amplifier by a 1-2 meter coaxial cable.
Preferably, the retransmission antenna is connected to the bidirectional amplifier by a 1-1.5 meter coaxial cable.
Preferably, the retransmission antenna is provided with a contact portion which is in contact with the back of the terminal.
Preferably, the downlink amplifying link includes: the first amplifying unit and the second amplifying unit are directly coupled with the first amplifying unit or indirectly coupled with the first amplifying unit through a filter and an attenuator.
Preferably, the power supply device further comprises a power supply module, wherein the power supply module is provided with an interface externally connected with an external power supply.
Preferably, the interface of the external power supply is a mobile power supply interface.
Preferably, the donor antenna is connected to one or more first duplexers through a first high/low frequency combiner/splitter, and the retransmission antenna is connected to one or more second duplexers through a second high/low frequency combiner/splitter.
In the embodiment of the invention, because the downlink amplifying links of each frequency band are combined into one path in a unified way, and the uplink amplifying links are correspondingly reduced, the power consumption requirement of the downlink amplifying links or the uplink amplifying links is smaller, and the corresponding required setting space, the size and the weight of the power supply module are also smaller. And the donor antenna and the bidirectional amplifier are integrated together, so that the integrated structure of the donor antenna and the bidirectional amplifier can be placed at a position 1-3 meters away from a human body, the signal shielding of the human body is avoided, the carrying is more convenient, and the installation is not needed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a conventional mobile phone signal amplifier;
fig. 2 is a schematic structural diagram of a terminal signal amplifier provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another terminal signal amplifier provided in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Example one
As shown in fig. 2, the embodiment of the present invention provides a portable terminal signal amplifier for signal amplification of a terminal 210, where the terminal 210 may be a mobile phone or a smart device using a mobile signal. The amplifier includes: a donor antenna 202, a bi-directional amplifier 203, and a retransmission antenna 205.
The donor antenna 202 is integrated with the bi-directional amplifier 203 (in one housing) and the retransmission antenna 204 is connected to the bi-directional amplifier 203 by a 1-3 meter coaxial cable.
The bi-directional amplifier 203 includes a plurality of first duplexers (281, 282, 283, 284, 285) connected to the donor antenna 202, a plurality of second duplexers (such as second duplexer 291, the remainder not labeled) connected to the retransmission antenna 204, a downlink amplification link 2134, and an uplink amplification link (2112 and/or 2156).
Downstream ports of said first plurality of duplexers are coupled and connected to said second duplexer by one of said downstream amplifying links 2134, and upstream ports of said second plurality of duplexers are coupled and connected to said first duplexer by at least one of said upstream amplifying links (2112 and/or 2156);
the downlink amplifier 2134 may cover one or more frequency bands of the terminal 210, and the entire uplink amplifier (2112 and/or 2156) may cover one or more frequency bands of the terminal.
For the purpose of portability, the original outdoor antenna (donor antenna) is no longer installed outdoors, and is therefore called a donor antenna. The donor antenna needs to keep a certain distance from the retransmission antenna to meet the requirement of space isolation, but the distance cannot be too far away, otherwise, the donor antenna is inconvenient to carry and use, and therefore a coaxial cable of 1-3 meters is needed as a transmission path of uplink and downlink signals. The bidirectional amplifier and the donor antenna are integrated into a whole, so that the noise coefficient increase caused by cable insertion loss can be reduced, the receiving sensitivity of the system is higher, and meanwhile, the retransmission antenna end is not provided with an active amplifier, so that the system is lighter and thinner, and a user can conveniently paste the antenna on the back of a terminal such as a mobile phone for use.
In this embodiment, the plurality of first duplexers includes: a first low-band duplexer (281, 282, 283) and a first high-band duplexer (284, 285).
In this embodiment, the plurality of second duplexers includes: a second low band duplexer corresponding to the low band of the terminal and a second high band duplexer corresponding to the high band of the terminal; the second low-band duplexer is connected to the first duplexer through a low-band uplink amplifying link 2112 covering a low band; the second high band duplexer is connected to the first duplexer via a high band uplink amplifier chain 2156 covering the high band.
In this embodiment, the retransmission antenna 204 is connected to the bi-directional amplifier by a 1-2 meter coaxial cable.
In this embodiment, the retransmission antenna 204 is also connected to the bi-directional amplifier 203 by a 1-1.5 meter coaxial cable 205.
In this embodiment, the retransmission antenna 204 is provided with a contact portion (not shown) that comes into contact with the back of the terminal 210.
In this embodiment, the downlink amplifier 2134 includes: a first amplification unit 213 and a second amplification unit 214 coupled to said first amplification unit 213. Because the retransmission antenna 204 is directly attached to the back surface of the terminal 210, the coupling loss is very small, so the output power requirement of the downlink amplification link 2134 is very small, and a common wide-band small-signal general amplifier with the maximum output power below 0dBm can meet the requirement, so all downlinks of a high-band and a low-band can be combined into one downlink amplification link 2134, thereby greatly saving power consumption and reducing the circuit complexity.
In this embodiment, the low band line amplifying link 2112 includes: a third amplification unit 211 and a fourth amplification unit 212 coupled to the third amplification unit 211.
In this embodiment, the high band line amplifying link 2156 includes: a fifth amplifying unit 215 and a sixth amplifying unit 216 coupled to said fifth amplifying unit 215.
In this embodiment, the output power of the uplink amplifier link needs to satisfy that the uplink signal is still greater than the receiving sensitivity of the base station when transmitted to the base station at a remote location, so the output uplink power needs to be greater than +17dBm, and at present, there are fewer amplifiers capable of satisfying that all bands of high and low frequencies output 17dBm signals satisfying the linearity requirement, and the cost is relatively high.
In this embodiment, the signal amplifier further includes a power module 208, and the power module 208 is provided with an interface for externally connecting to an external power source.
Specifically, the interface of the external power supply is a mobile power supply interface 206, which is connected to a power supply module 208 in the housing through a cable.
In this embodiment, the donor antenna 202 is connected to a plurality of the first duplexers through a first high/low frequency combiner/splitter 280, and the retransmission antenna 204 is connected to a plurality of the second duplexers through a second high/low frequency combiner/splitter 290.
In the embodiment of the invention, because the downlink amplification links of each frequency band are combined into one path, and the uplink amplification links are correspondingly reduced, the power consumption requirement of the downlink amplification links or the uplink amplification links is smaller, and the corresponding required setting space, the volume and the weight of the power supply module are also smaller. And the donor antenna and the bidirectional amplifier are integrated together, so that the integrated structure of the donor antenna and the bidirectional amplifier can be placed at a position 1-3 meters away from a human body, the signal shielding of the human body is avoided, the carrying is more convenient, and the installation is not needed.
Example two
As shown in fig. 3, unlike the first embodiment, in the present embodiment, the second duplexers are connected to the first duplexer only through a full-band uplink amplifying link 3112.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. A portable terminal signal amplifier, comprising: a donor antenna, a bidirectional amplifier, and a retransmission antenna;
the donor antenna is integrated with the bidirectional amplifier, and the retransmission antenna is connected to the bidirectional amplifier through a coaxial cable of 1-3 meters;
the bidirectional amplifier comprises one or more first duplexers connected to the donor antenna, one or more second duplexers connected to the retransmission antenna, a downlink amplification link, and an uplink amplification link;
the downstream ports of the first duplexers are coupled and connected to the second duplexer by one of the downstream amplification links, and the upstream ports of the second duplexers are coupled and connected to the first duplexer by at least one of the upstream amplification links;
the downlink amplification link may cover one or more downlink frequency bands of the terminal, and the entire uplink amplification link may cover one or more uplink frequency bands of the terminal.
The donor antenna and the retransmission antenna may cover one or more frequency bands of the terminal.
2. The portable terminal signal amplifier of claim 1, wherein the plurality of first duplexers includes: a first low-band duplexer and a first high-band duplexer.
3. The portable terminal signal amplifier of claim 2, wherein the plurality of second duplexers includes: a second low band duplexer corresponding to the low band of the terminal and a second high band duplexer corresponding to the high band of the terminal;
the second low-band duplexer is connected to the first duplexer through a low-band uplink amplifying link covering a low band;
the second high-band duplexer is connected to the first duplexer through a high-band uplink amplifying link covering a high band.
4. The portable terminal signal amplifier of claim 1, wherein said retransmission antenna is connected to said bidirectional amplifier by a 1-2 meter coaxial cable.
5. The portable terminal signal amplifier of claim 1, wherein said retransmission antenna is connected to said bidirectional amplifier by a 1-1.5 meter coaxial cable.
6. The portable terminal signal amplifier according to claim 1, wherein the retransmission antenna is provided with a contact portion which is in close contact with a back of the terminal.
7. The portable terminal signal amplifier of claim 1, wherein said downstream amplification link comprises: the first amplifying unit and the second amplifying unit are directly coupled with the first amplifying unit or indirectly coupled with the first amplifying unit through a filter and an attenuator.
8. The signal amplifier of claim 1, further comprising a power module, wherein the power module is provided with an interface for externally connecting an external power source.
9. The portable terminal signal amplifier according to claim 8, wherein the interface of the external power supply is a mobile power supply interface.
10. The portable terminal signal amplifier of claim 1, wherein the donor antenna is connected to one or more of the first duplexers through a first high and low frequency combiner-splitter, and wherein the retransmission antenna is connected to one or more of the second duplexers through a second high and low frequency combiner-splitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110174974.1A CN113014286A (en) | 2021-02-09 | 2021-02-09 | Portable terminal signal amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110174974.1A CN113014286A (en) | 2021-02-09 | 2021-02-09 | Portable terminal signal amplifier |
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| Publication Number | Publication Date |
|---|---|
| CN113014286A true CN113014286A (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110174974.1A Pending CN113014286A (en) | 2021-02-09 | 2021-02-09 | Portable terminal signal amplifier |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201435730Y (en) * | 2008-11-13 | 2010-03-31 | 中国移动通信集团广东有限公司 | Portable emergency communication repeater system |
| CN101938291A (en) * | 2010-08-19 | 2011-01-05 | 三维通信股份有限公司 | Device for transceiver radio frequency link |
| CN102394687A (en) * | 2011-11-02 | 2012-03-28 | 三维通信股份有限公司 | Multimode and multiband straight amplification station |
| CN110380754A (en) * | 2019-07-22 | 2019-10-25 | 浙江威力克通信股份有限公司 | A kind of double frequency time division signal transmitting-receiving amplifier |
-
2021
- 2021-02-09 CN CN202110174974.1A patent/CN113014286A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201435730Y (en) * | 2008-11-13 | 2010-03-31 | 中国移动通信集团广东有限公司 | Portable emergency communication repeater system |
| CN101938291A (en) * | 2010-08-19 | 2011-01-05 | 三维通信股份有限公司 | Device for transceiver radio frequency link |
| CN102394687A (en) * | 2011-11-02 | 2012-03-28 | 三维通信股份有限公司 | Multimode and multiband straight amplification station |
| CN110380754A (en) * | 2019-07-22 | 2019-10-25 | 浙江威力克通信股份有限公司 | A kind of double frequency time division signal transmitting-receiving amplifier |
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Application publication date: 20210622 |
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