CN102300131A - Anti-interference device and related system for interphone - Google Patents
Anti-interference device and related system for interphone Download PDFInfo
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- CN102300131A CN102300131A CN2011102531622A CN201110253162A CN102300131A CN 102300131 A CN102300131 A CN 102300131A CN 2011102531622 A CN2011102531622 A CN 2011102531622A CN 201110253162 A CN201110253162 A CN 201110253162A CN 102300131 A CN102300131 A CN 102300131A
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Abstract
The embodiment of the invention discloses an anti-interference device and a related system for an interphone. The device and the system are used for eliminating the mutual interference of high-power interphones in the short-range use. The device comprises a switch and a duplexer. The switch comprises a first interface, a second interface and a third interface. The duplexer comprises a first port, a second port, a third port, a first filter and a second filter. The first and second interfaces of the switch are sequentially connected with the first and second ports of the duplexer. The third interface of the switch is used for connecting an antenna interface of the interphone. The third port of the duplexer is used for connecting an antenna. The third interface of the switch is connected with the first interface when the interphone transmits a signal, and is connected with the second interface when the interphone receives the signal. By the technical scheme provided by the invention, the radiation and interference of the high-power interphones in the short-range use can be eliminated.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of jamproof device of intercom and related system of being used for.
Background technology
In the intercom communication, a side who transmits is a transmitter, and a side of received signal is a receiver, is that transmitter or receiver all have its specified working band.In the perfect condition, the frequency that transmitter transmits only drops in the nominal operation frequency band, and the frequency of the signal that receiver receives also always drops in its working band.But in actual the use, when a high-power transmitter transmits with a certain frequency, the lifting owing to make an uproar in the end of signal, near simultaneously can tranmitting frequency distribution frequency interference signal, closely the nearly frequency band receiver of Shi Yonging connects and will receive this interference signal, cause that make an uproar lifting or front end of the end blocks, thereby make the sensitivity of receiver significantly reduce.
At present, when high-power transmitter and receiver closely use,, mainly be the mode antenna pulling away of an intercom wherein by prolonging feeder line in order to reduce or eliminate above-mentioned interference signal, two machine antenna distances are far away more, and its isolation is big more.When 30 meters of two machine antenna distances, it is owing to the isolation that antenna distance increases can isolated power be the interference signal of the transmitter emission of 20W.
But this scheme has limited the scope of application of equipment, and two high-power intercoms can not closely use, and each use all will be moved intercom one segment distance, causes very big inconvenience to the user.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of jamproof device of intercom and related system of being used for is provided, and enlarges the scope of application and guarantees under the prerequisite of service behaviour at intercom, the phase mutual interference when eliminating high-power intercom easily and closely using.
A kind of jamproof device of intercom that is used for comprises: switch and duplexer,
Described switch comprises first interface, second interface and the 3rd interface;
Described duplexer comprises first port, second port, the 3rd port, first filter and second filter, described first port connects the input of described first filter, described second port connects the output of described second filter, described the 3rd port connects the output of described first filter and the input of described second filter, the working band of described first filter and the emission band of intercom are complementary, and the working band of described second filter and the frequency acceptance band of intercom are complementary;
Described first interface connects described first port, and described second interface connects described second port, and described the 3rd interface is used to connect the antennal interface of intercom, and described the 3rd port is used to connect antenna;
When intercom transmitted, described the 3rd interface was connected described first interface, and when the intercom received signal, described the 3rd interface is connected described second interface.
A kind of jamproof intercom system comprises: intercom, antenna and as the described jamproof device of intercom that is used for of above-mentioned invention scheme,
The antennal interface of described intercom connects described the 3rd interface, and described the 3rd port connects described antenna.
As can be seen from the above technical solutions, the present invention has the following advantages:
By being used of switch and duplexer, filter out the medium frequency that transmits and be in the interference signal of receiver frequency acceptance band, the tranmitting frequency of this transmitter and the receive frequency of this receiver are inequality, receiving terminal filters transmitting of the aforementioned transmitter of hair loss simultaneously, thereby the radiated interference in the time of can eliminating high-power intercom and closely use, therefore high-power intercom can closely use, and improves the convenience when using.
Description of drawings
Fig. 1 is used for the structure chart of the jamproof device of intercom for first embodiment of the invention;
Fig. 2 is used for the structure chart of the jamproof device of intercom for second embodiment of the invention;
Fig. 3 is used for the structure chart of the jamproof device of intercom for third embodiment of the invention;
Fig. 4 is the structure chart of the jamproof intercom system of fourth embodiment of the invention;
Fig. 5 is the structure chart of the jamproof intercom system of fifth embodiment of the invention;
Fig. 6 is the structure chart of the jamproof intercom system of sixth embodiment of the invention;
Fig. 7 is that the jamproof intercom system of seventh embodiment of the invention is used schematic diagram.
Embodiment
The embodiment of the invention provides a kind of jamproof device of intercom that is used for, be used for enlarging under the prerequisite of the scope of application and assurance service behaviour at intercom, phase mutual interference when eliminating high-power intercom easily and closely using improves the convenience that the user uses.The embodiment of the invention also provides relevant jamproof system, below is described in detail respectively.
The jamproof device detailed structure of intercom that is used for of first embodiment of the invention sees also Fig. 1, mainly comprises:
Switch 101 is used for selecting one of them filter line attachment of duplexer.
Described switch 101 comprises first interface 1011, second interface 1012 and the 3rd interface 1013.
Duplexer 102 comprises two filters, is used to cooperate the use of the emission band and the frequency acceptance band of intercom.
Described duplexer 102 comprises first port one 021, second port one 022, the 3rd port one 023, first filter 1024 and second filter 1025, described first port one 021 connects the input of described first filter 1024, described second port one 022 connects the output of described second filter 1025, described the 3rd port one 023 connects the output of described first filter 1024 and the input of described second filter 1025, the working band of described first filter 1024 and the emission band of intercom are complementary, and the working band of described second filter 1025 and the frequency acceptance band of intercom are complementary.
In the present embodiment device, described first interface 1011 connects described first port one 021, described second interface 1012 connects described second port one 022, and described the 3rd interface 1013 is used to connect the antennal interface of intercom, and described the 3rd port one 023 is used to connect antenna.
The present embodiment device is when intercom transmits, and described the 3rd interface 1013 is connected described first interface 1011, and when the intercom received signal, described the 3rd interface 1013 is connected described second interface 1012.
Like this, when high-power intercom transmits, because the working band of described first filter 1021 of described duplexer 102 is complementary with the emission band of intercom, described first filter 1021 just can drop on the filtering of making an uproar of the end that may influence near receiver operate as normal outside the emission band to the medium frequency that transmits.During the intercom received signal, because the working band of described second filter 1022 of described duplexer 102 and the frequency acceptance band of intercom are complementary, intercom receives only the signal within its frequency acceptance band, plays certain anti-interference effect.By above-mentioned device, single antenna interface intercom can guarantee under the jamproof prerequisite and another high power intercom closely uses, and makes things convenient for the user.
Second embodiment of the invention will be further qualified the switch among first embodiment 101, make the switch control of apparatus of the present invention can realize automatic control, see also Fig. 2, mainly comprise:
Switch 201 is used for selecting automatically one of them filter line attachment of duplexer.
Described switch 201 comprises first interface 2011, second interface 2012, the 3rd interface 2013 and control port 2014, and described control port 2014 is used to connect the control signal output ends mouth of intercom.
Duplexer 202 comprises two filters, is used to cooperate the use of the emission band and the frequency acceptance band of intercom.
Described duplexer 202 comprises first port 2021, second port 2022, the 3rd port 2023, first filter 2024 and second filter 2025, described first port 2021 connects the input of described first filter 2024, described second port 2022 connects the output of described second filter 2025, described the 3rd port 2023 connects the output of described first filter 2024 and the input of described second filter 2025, the working band of described first filter 2024 and the emission band of intercom are complementary, and the working band of described second filter 2025 and the frequency acceptance band of intercom are complementary.
In the present embodiment device, described first interface 2011 connects described first port 2021, described second interface 2012 connects described second port 2022, described the 3rd interface 2013 is used to connect the antennal interface of intercom, described control port 2014 is used to connect the control signal output ends mouth of intercom, and described the 3rd port 2023 is used to connect antenna.
The present embodiment device transmits at intercom, when described intercom outputs a control signal to described control port 2014 through the control signal output ends mouth, described the 3rd interface 2013 is connected described first interface 2011, when the intercom received signal, described the 3rd interface 2013 is connected described second interface 2012.
Like this, because the described switch 201 of apparatus of the present invention is provided with control port 2014, make the switch control of apparatus of the present invention can realize automatic control.When high-power intercom transmits, because the working band of described first filter 2021 of described duplexer 202 is complementary with the emission band of intercom, described first filter 2021 just can drop on the filtering of making an uproar of the end that may influence near receiver operate as normal outside the emission band to the medium frequency that transmits.During the intercom received signal, because the working band of described second filter 2022 of described duplexer 202 and the frequency acceptance band of intercom are complementary, intercom receives only the signal within its frequency acceptance band, plays certain anti-interference effect.By above-mentioned device, single antenna interface intercom can guarantee under the jamproof prerequisite and another high power intercom closely uses, and makes things convenient for the user.
Third embodiment of the invention will be further qualified the switch among second embodiment 201, point out the particular type of concrete switchtype and relevant signal, see also Fig. 3, mainly comprise:
(Single Pole Double Throw, SPDT) switch 301, are used for selecting automatically one of them filter line attachment of duplexer for the electronics single-pole double throw.
Described electronics SPDT switch 301 comprises first interface 3011, second interface 3012, the 3rd interface 3013 and control port 3014, and described control port 3014 is used to connect the emission control voltage output end mouth of intercom.
Duplexer 302 comprises two filters, is used to cooperate the use of the emission band and the frequency acceptance band of intercom.
Described duplexer 302 comprises first port 3021, second port 3022, the 3rd port 3023, first filter 2024 and second filter 3025, described first port 3021 connects the input of described first filter 3024, described second port 3022 connects the output of described second filter 3025, described the 3rd port 3023 connects the output of described first filter 3024 and the input of described second filter 3025, the working band of described first filter 3024 and the emission band of intercom are complementary, and the working band of described second filter 3025 and the frequency acceptance band of intercom are complementary.
In the present embodiment device, described first interface 3011 connects described first port 3021, described second interface 3012 connects described second port 3022, described the 3rd interface 3013 is used to connect the antennal interface of intercom, described control port 4013 is used to connect the antenna control signal output port of intercom, and described the 3rd port 3023 is used to connect antenna.
The present embodiment device transmits at intercom, described intercom is through emission control voltage output end mouth output emission control voltage during to described control port 3014, described the 3rd interface 3013 is connected described first interface 3011, when the intercom received signal, described the 3rd interface 3013 is connected described second interface 3012.
Like this, because the described electronics SPDT switch 301 of apparatus of the present invention is provided with control port 3014, make the switch control of apparatus of the present invention can realize automatic control.When high-power intercom transmits, because the working band of described first filter 3021 of described duplexer 302 is complementary with the emission band of intercom, described first filter 3021 just can drop on the filtering of making an uproar of the end that may influence near receiver operate as normal outside the emission band to the medium frequency that transmits.During the intercom received signal, because the working band of described second filter 3022 of described duplexer 302 and the frequency acceptance band of intercom are complementary, intercom receives only the signal within its frequency acceptance band, plays certain anti-interference effect.By above-mentioned device, single antenna interface intercom can guarantee under the jamproof prerequisite and another high power intercom closely uses, and makes things convenient for the user.
The jamproof intercom system detailed structure of fourth embodiment of the invention sees also Fig. 4, mainly comprises:
Intercom 401 is used to transmit or received signal.
Intercom 401 comprises antennal interface 4011.
The frequency point ranges that intercom 401 transmits is the emission band of transmitter, and the frequency point ranges of intercom 401 received signals is the frequency acceptance band of receiver.Described emission band and described frequency acceptance band are generally not overlapping, and country there are strict requirements to the use of electromagnetic wave frequency range.
Means for anti-jamming 403 is used for the anti-interference use of single antenna intercom.
Means for anti-jamming 403 in the present embodiment is the described jamproof device of intercom that is used for of first embodiment of the invention.
Described the 3rd interface 1013 that the antennal interface 4011 of described intercom 401 connects in the described means for anti-jamming 403, described the 3rd port one 023 in the described means for anti-jamming 403 connects described antenna 402.
When the present embodiment system transmitted at intercom 401, described the 3rd interface 1013 was connected described first interface 1011, and when intercom 401 received signals, described the 3rd interface 1013 is connected described second interface 1012.
Like this, when high-power intercom 401 transmits, because the working band of described first filter 1021 of described duplexer 102 is complementary with the emission band of intercom 401, described first filter 1021 just can drop on the filtering of making an uproar of the end that may influence near receiver operate as normal outside the emission band to the medium frequency that transmits.During intercom 401 received signals, because the working band of described second filter 1022 of described duplexer 102 and the frequency acceptance band of intercom are complementary, intercom receives only the signal within its frequency acceptance band, plays certain anti-interference effect.Transmit or received signal by above-mentioned system, can be under jamproof prerequisite and another intercom system that comprises the high power intercom closely use, make things convenient for the user.
Fifth embodiment of the invention will be further qualified the switch among the 4th embodiment 101, make the switch control of system of the present invention can realize automatic control, see also Fig. 5, mainly comprise:
Intercom 501 is used to transmit or received signal.
Intercom 501 comprises antennal interface 5011, control signal output ends mouth 5012.
The frequency point ranges that intercom 501 transmits is the emission band of transmitter, and the frequency point ranges of intercom 501 received signals is the frequency acceptance band of receiver.Described emission band and described frequency acceptance band are generally not overlapping, and country there are strict requirements to the use of electromagnetic wave frequency range.
Antenna 502 is used for the radio-frequency electrical energy that transmitter is fed is converted to electromagnetism wave energy to space radiation, perhaps the electromagnetism wave energy of spatial transmission is converted into radio-frequency electrical energy and is transported to receiver.
Means for anti-jamming 503 is used for the anti-interference use of single antenna intercom.
Means for anti-jamming 503 in the present embodiment is the described jamproof device of intercom that is used for of second embodiment of the invention.
In the present embodiment, described the 3rd interface 2013 that the antennal interface 5011 of described intercom 501 connects in the described means for anti-jamming 503, the described control port 2014 that the control signal output ends mouth 5012 of described intercom 501 connects in the described means for anti-jamming 503, described the 3rd port 2023 in the described means for anti-jamming 503 connects described antenna 502.
The present embodiment device transmits at intercom 501, when described intercom 501 outputs a control signal to described control port 2014 through control signal output ends mouth 5012, described the 3rd interface 2013 is connected described first interface 2011, when intercom 501 received signals, described the 3rd interface 2013 is connected described second interface 2012.
Like this, because the described switch 201 of system of the present invention is provided with control port 2014, make the switch control of system of the present invention can realize automatic control.When high-power intercom 501 transmits, because the working band of described first filter 2021 of described duplexer 202 is complementary with the emission band of intercom 501, described first filter 2021 just can drop on the filtering of making an uproar of the end that may influence near receiver operate as normal outside the emission band to the medium frequency that transmits.During intercom 501 received signals, because the working band of described second filter 1022 of described duplexer 102 and the frequency acceptance band of intercom 501 are complementary, intercom 501 receives only the signal within its frequency acceptance band, plays certain anti-interference effect.Transmit or received signal by above-mentioned system, can be under jamproof prerequisite and another intercom system that comprises the high power intercom closely use, make things convenient for the user.
Sixth embodiment of the invention will be further qualified the switch among the 5th embodiment 201, point out the particular type of concrete switchtype and relevant signal, see also Fig. 6, mainly comprise:
The frequency point ranges that intercom 601 transmits is the emission band of transmitter, and the frequency point ranges of intercom 601 received signals is the frequency acceptance band of receiver.Described emission band and described frequency acceptance band are generally not overlapping, and country there are strict requirements to the use of electromagnetic wave frequency range.
Means for anti-jamming 603 is used for the anti-interference use of single antenna intercom.
Means for anti-jamming 603 in the present embodiment is the described jamproof device of intercom that is used for of third embodiment of the invention.
In the present embodiment, described the 3rd interface 3013 that the antennal interface 6011 of described intercom 601 connects in the described means for anti-jamming 603, the described control port 3014 that the emission control voltage output end mouth 6012 of described intercom 601 connects in the described means for anti-jamming 603, described the 3rd port 3023 in the described means for anti-jamming 603 connects described antenna 602.
The present embodiment system transmits at intercom 601, described intercom 601 is through emission control voltage output end mouth 6012 output emission control voltages during to described control port 3014, described the 3rd interface 3013 is connected described first interface 3011, when intercom 601 received signals, described the 3rd interface 3013 is connected described second interface 3012.
Like this, because the described electronics SPDT switch 301 of system of the present invention is provided with control port 3014, make the switch control of system of the present invention can realize automatic control.When high-power intercom 601 transmits, because the working band of described first filter 3021 of described duplexer 302 is complementary with the emission band of intercom 601, described first filter 3021 just can drop on the filtering of making an uproar of the end that may influence near receiver operate as normal outside the emission band to the medium frequency that transmits.During intercom 601 received signals, because the working band of described second filter 3022 of described duplexer 302 and the frequency acceptance band of intercom 601 are complementary, intercom 601 receives only the signal within its frequency acceptance band, plays certain anti-interference effect.Transmit or received signal by above-mentioned system, can be under jamproof prerequisite and another intercom system that comprises the high power intercom closely use, make things convenient for the user.
Seventh embodiment of the invention will be introduced the use of inventing anti-interference intercom system among the 4th embodiment mutually in a concrete application scenario, see also Fig. 7, comprise:
Wherein, the structure of described first intercom system 701 and second intercom system 702 is identical, and all identical with the described anti-interference intercom system of fourth embodiment of the invention.First intercom system 701 is in the state of transmitting, and second intercom system 702 is in receiving state signal, and the signal that is received is from signal source 703.
Described first intercom system 701 is identical with the emission band of described second intercom system 702, is 351MHz～356MHz, and the frequency acceptance band of two machines is also identical, is 361MHz～366MHz.Signal source 703 positive tranmitting frequencies are the signal of 362MHz, first intercom system, 701 positive tranmitting frequencies are the signal of 352MHz, owing to adopt high-power transmitter in first intercom system 701, the lifting of making an uproar of its end is so first intercom system 701 is gone back the interference signal that transmit frequency range is 346MHz～366MHz.
According to embodiment four, duplexer in first intercom system 701 be communicated with intercom antennal interface and antenna with first filter intercom emission band coupling, be that the signal of 351MHz～356MHz is launched so have only frequency range; Simultaneously, second filter with intercom frequency acceptance band coupling of duplexer is communicated with intercom antennal interface and antenna in second intercom system 702, so second intercom system receives only the signal that frequency range is 361MHz～366MHz, the frequency range of first intercom system, 701 emissions just is that the signal of 351MHz～356MHz can't be received by second intercom system 702, and receive only the frequency that signal source 703 launched is the useful signal of 362MHz, promptly can the phase mutual interference between first intercom system 701 and second intercom system 702.
In like manner can demonstrate,prove,, when second intercom system 702 transfers emission state to simultaneously, can obtain same conclusion when first intercom system 701 transfers accepting state to.Like this, intercom in high-power first intercom system 701 and the intercom in high-power second intercom system 702 can closely use.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
More than a kind ofly be used for the jamproof device of intercom and related system is described in detail to provided by the present invention, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. one kind is used for the jamproof device of intercom, it is characterized in that, comprising: switch and duplexer,
Described switch comprises first interface, second interface and the 3rd interface;
Described duplexer comprises first port, second port, the 3rd port, first filter and second filter, described first port connects the input of described first filter, described second port connects the output of described second filter, described the 3rd port connects the output of described first filter and the input of described second filter, the working band of described first filter and the emission band of intercom are complementary, and the working band of described second filter and the frequency acceptance band of intercom are complementary;
Described first interface connects described first port, and described second interface connects described second port, and described the 3rd interface is used to connect the antennal interface of intercom, and described the 3rd port is used to connect antenna;
When intercom transmitted, described the 3rd interface was connected described first interface, and when the intercom received signal, described the 3rd interface is connected described second interface.
2. device according to claim 1 is characterized in that,
Described switch further comprises control port, and described control port is used to connect the control signal output ends mouth of intercom;
When intercom transmits, when described intercom outputs a control signal to the described control port of described switch through described control signal output ends mouth, described the 3rd interface is connected described first interface, and when the intercom received signal, described the 3rd interface is connected described second interface.
3. device according to claim 2 is characterized in that,
Described switch is an electronics single-pole double-throw switch (SPDT) SPDT switch;
The control signal output ends mouth of described intercom is the emission control voltage output end mouth of described intercom;
Described control signal is an emission control voltage.
4. a jamproof intercom system is characterized in that, comprising: intercom, antenna and device as claimed in claim 1,
The antennal interface of described intercom connects described the 3rd interface, and described the 3rd port connects described antenna.
5. system according to claim 4 is characterized in that,
Described switch further comprises control port, and described control port is used to connect the control signal output ends mouth of intercom;
When intercom transmits, when described intercom outputs a control signal to the described control port of described switch through described control signal output ends mouth, described the 3rd interface is connected described first interface, and when the intercom received signal, described the 3rd interface is connected described second interface.
6. equipment according to claim 5 is characterized in that,
Described switch is an electronics single-pole double-throw switch (SPDT) SPDT switch;
The control signal output ends mouth of described intercom is the emission control voltage output end mouth of described intercom;
Described control signal is an emission control voltage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102531622A CN102300131A (en) | 2011-08-30 | 2011-08-30 | Anti-interference device and related system for interphone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102531622A CN102300131A (en) | 2011-08-30 | 2011-08-30 | Anti-interference device and related system for interphone |
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| CN2011102531622A Pending CN102300131A (en) | 2011-08-30 | 2011-08-30 | Anti-interference device and related system for interphone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018058780A1 (en) * | 2016-09-29 | 2018-04-05 | 宇龙计算机通信科技(深圳)有限公司 | Gsm radio frequency circuit and terminal comprising same |
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| CN1237866A (en) * | 1998-05-27 | 1999-12-08 | 诺基亚流动电话有限公司 | Transceiver for wireless communication |
| CN1250253A (en) * | 1998-08-07 | 2000-04-12 | 艾利森电话股份有限公司 | Controllable electric wave filter |
| US20050206478A1 (en) * | 2004-03-16 | 2005-09-22 | Matsushita Electric Industrial Co., Ltd. | Antenna duplexer |
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2011
- 2011-08-30 CN CN2011102531622A patent/CN102300131A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237866A (en) * | 1998-05-27 | 1999-12-08 | 诺基亚流动电话有限公司 | Transceiver for wireless communication |
| CN1250253A (en) * | 1998-08-07 | 2000-04-12 | 艾利森电话股份有限公司 | Controllable electric wave filter |
| US20050206478A1 (en) * | 2004-03-16 | 2005-09-22 | Matsushita Electric Industrial Co., Ltd. | Antenna duplexer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018058780A1 (en) * | 2016-09-29 | 2018-04-05 | 宇龙计算机通信科技(深圳)有限公司 | Gsm radio frequency circuit and terminal comprising same |
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Application publication date: 20111228 |