CN109257055A - A kind of anti-interference method when reception electromagnetic wave - Google Patents
A kind of anti-interference method when reception electromagnetic wave Download PDFInfo
- Publication number
- CN109257055A CN109257055A CN201810921763.8A CN201810921763A CN109257055A CN 109257055 A CN109257055 A CN 109257055A CN 201810921763 A CN201810921763 A CN 201810921763A CN 109257055 A CN109257055 A CN 109257055A
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- interference
- signal
- wave
- receiving antenna
- interference signal
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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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
- H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
- H04B1/126—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means having multiple inputs, e.g. auxiliary antenna for receiving interfering signal
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
- Radio Transmission System (AREA)
Abstract
A kind of anti-interference method when reception electromagnetic wave, the following steps are included: horizontal polarized wave receiving antenna is when receiving horizontal polarized wave and vertical polarization interference wave, increase interference signal receiving antenna, the interference signal receiving antenna also receives vertical polarization interference wave and seldom horizontal polarized wave；The interference signal that interference signal receiving antenna receives is sent to interference signal negater circuit and carries out reverse phase processing；The signal of the reverse phase interference signal obtained after processing and horizontal polarized wave receiving antenna is overlapped；The signal after superposition processing is sent to reception transmitting equipment again, improves the signal-to-noise ratio for receiving signal.
Description
Technical field
The invention belongs to fields of communication technology, and in particular to anti-interference method when a kind of reception electromagnetic wave.
Background technique
Electromagnetism ring in modern communications environment, since frequency resource is nervous, around radio transition equipment, receiving device
Border is complicated, the case where with band interference or successive bands serious interference often occurs.It such as in emergency communication frequency band is also such as
This, receives the horizontal antenna of horizontal polarized wave, the remote horizontal polarized wave weak signal transmitted by ionospheric reflection received
It is often submerged in local same frequency vertically polarized wave high reject signal, bottom, which is made an uproar, causes greatly very much communication failures.
Summary of the invention
The present invention provides anti-interference methods when a kind of reception electromagnetic wave, can be very good to solve between different polarized waves
Problem of co-channel interference.
As shown in Figure 1, horizontal polarization wave antenna 4 is while receiving horizontally-polarized electromagnetic wave, due to vertical with surrounding
Polarized wave interference source be not it is absolute orthogonal, be constantly present the angle less than or greater than 90 degree, and there are projection of angle,
This is to receive a main cause of different polarization direction interference signals, and this projection of angle can not be eliminated thoroughly,
Closer apart from interference source, this angle is bigger, while the intensity of interference signal is also bigger.In addition various buildings, massif etc. is anti-
The source of the interference signal and noise jamming model penetrated.Meanwhile also receiving the friendship that various vertically polarized waves generate in space
Adjust signal.
The present invention is achieved through the following technical solutions.
A kind of anti-interference method when reception electromagnetic wave, comprising the following steps:
Step 1: horizontal polarized wave receiving antenna increases interference when receiving horizontal polarized wave and vertical polarization interference wave
Signal receiving antenna, the interference signal receiving antenna also receive vertical polarization interference wave and seldom negligible level
(interference signal receiving antenna receives the vertical polarization interference wave signal of various building reflections to polarized wave, also receives various hang down
The intermodulation signal that straight polarized wave generates in space)；
Step 2: the interference signal that interference signal receiving antenna receives is sent to interference signal negater circuit and carries out reverse phase
Processing；
Step 3: the signal of the reverse phase interference signal obtained after processing and horizontal polarized wave receiving antenna is overlapped,
Thus basic neutralisation interference signal；
Step 4: the signal after superposition processing is sent to reception transmitting equipment again, improves the signal-to-noise ratio for receiving signal.
Interference signal negater circuit of the present invention is using capacitor C or inductance element T or dual-gate field-effect pipe or three
The negater circuit that pole pipe or single supply op or dual power supply amplifier are constituted.
Anti-interference method of the present invention can use under complicated electromagnetic environment, can also use under general environment.
As long as can apply in the case that reception signal and interference signal can distinguish polarization mode, can solve not same polarization
Problem of co-channel interference between wave.For example, interference signal is horizontal polarization if received useful signal is vertically polarized wave
Antenna direction is changed 90 ° by wave.
Detailed description of the invention
Fig. 1 is anti-interference method schematic diagram of the present invention；
Fig. 2-1 is the interference signal that horizontal polarized wave receiving antenna 4 receives；
Fig. 2-2 is the interference signal that interference signal receiving antenna 6 receives；
Fig. 2-3 is by negater circuit treated reverse phase interference signal；
Fig. 2-4 is the interference signal after superposition processing；
Fig. 3-1 is the interference signal negater circuit constituted using capacitor C；
Fig. 3-2 is the interference signal negater circuit constituted using inductance element T；
Fig. 3-3 is the interference signal negater circuit constituted using dual-gate field-effect pipe；
Fig. 3-4 is the interference signal negater circuit constituted using triode；
Fig. 3-5 is the interference signal negater circuit constituted using single supply op；
Fig. 3-6 is the interference signal negater circuit constituted using dual power supply amplifier；
In figure: 1- horizontal polarized wave direction, 2- vertically polarized wave direction (interference wave), 3- interferes wave, 4- horizontal polarized wave
Receiving antenna, 5- interference signal negater circuit, 6- interference signal receiving antenna, 7- receiving device.
Specific embodiment
A kind of anti-interference method when reception electromagnetic wave, comprising the following steps:
Step 1: horizontal polarized wave receiving antenna increases interference when receiving horizontal polarized wave and vertical polarization interference wave
Signal receiving antenna, the interference signal receiving antenna also receive vertical polarization interference wave and seldom negligible level
(interference signal receiving antenna receives the vertical polarization interference wave signal of various building reflections to polarized wave, also receives various hang down
The intermodulation signal that straight polarized wave generates in space)；
Step 2: the interference signal that interference signal receiving antenna receives is sent to interference signal negater circuit and carries out reverse phase
Processing；
Step 3: the signal of the reverse phase interference signal obtained after processing and horizontal polarized wave receiving antenna is overlapped (A
At point), thus basic neutralisation interference signal；
Step 4: the signal after superposition processing is sent to reception transmitting equipment again, improves the signal-to-noise ratio for receiving signal.
Interference signal negater circuit 5 of the present invention is using capacitor C or inductance element T or dual-gate field-effect pipe or three
The negater circuit that pole pipe or single supply op or dual power supply amplifier are constituted.
Claims (2)
1. anti-interference method when a kind of reception electromagnetic wave, which comprises the following steps:
Step 1: horizontal polarized wave receiving antenna (4) increases interference letter when receiving horizontal polarized wave and vertical polarization interference wave
Number receiving antenna (6), the interference signal receiving antenna (6) also receive vertical polarization interference wave and seldom horizontal polarization
Wave；
Step 2: the interference signal that interference signal receiving antenna (6) receives is sent to interference signal negater circuit (5) and is carried out instead
Phase processor；
Step 3: the reverse phase interference signal obtained after processing and the signal of horizontal polarized wave receiving antenna (4) are overlapped；
Step 4: the signal after superposition processing is sent to reception transmitting equipment again, improves the signal-to-noise ratio for receiving signal.
2. anti-interference method according to claim 1, which is characterized in that the interference signal negater circuit (5) is to use
The reversed electricity that capacitor C or inductance element T or dual-gate field-effect pipe or triode or single supply op or dual power supply amplifier are constituted
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810921763.8A CN109257055A (en) | 2018-08-14 | 2018-08-14 | A kind of anti-interference method when reception electromagnetic wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810921763.8A CN109257055A (en) | 2018-08-14 | 2018-08-14 | A kind of anti-interference method when reception electromagnetic wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109257055A true CN109257055A (en) | 2019-01-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810921763.8A Pending CN109257055A (en) | 2018-08-14 | 2018-08-14 | A kind of anti-interference method when reception electromagnetic wave |
Country Status (1)
| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114071984A (en) * | 2021-11-25 | 2022-02-18 | 重庆瑞润电子有限公司 | Electronic wire harness electromagnetic compatibility anti-interference device and anti-interference method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2178024Y (en) * | 1993-12-14 | 1994-09-21 | 西安电子科技大学 | Cancellation apparatus for TV synchronizing frequency disturbance |
| CN102148633A (en) * | 2010-02-05 | 2011-08-10 | 松下电器产业株式会社 | Wireless receiving device and method for reducing received noise by utilizing diversity antenna |
| CN102769487A (en) * | 2012-05-28 | 2012-11-07 | 北京大学 | Automatic interference elimination system and method based on multiple receiving antennas |
-
2018
- 2018-08-14 CN CN201810921763.8A patent/CN109257055A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2178024Y (en) * | 1993-12-14 | 1994-09-21 | 西安电子科技大学 | Cancellation apparatus for TV synchronizing frequency disturbance |
| CN102148633A (en) * | 2010-02-05 | 2011-08-10 | 松下电器产业株式会社 | Wireless receiving device and method for reducing received noise by utilizing diversity antenna |
| CN102769487A (en) * | 2012-05-28 | 2012-11-07 | 北京大学 | Automatic interference elimination system and method based on multiple receiving antennas |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114071984A (en) * | 2021-11-25 | 2022-02-18 | 重庆瑞润电子有限公司 | Electronic wire harness electromagnetic compatibility anti-interference device and anti-interference method |
| CN114071984B (en) * | 2021-11-25 | 2024-05-10 | 重庆瑞润电子有限公司 | Electromagnetic compatibility anti-interference device and anti-interference method for electronic wire harness |
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| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190122 |
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| WD01 | Invention patent application deemed withdrawn after publication |