CN106935980A - The box horn of transmitting different frequency range radiofrequency signal - Google Patents
The box horn of transmitting different frequency range radiofrequency signal Download PDFInfo
- Publication number
- CN106935980A CN106935980A CN201710044836.5A CN201710044836A CN106935980A CN 106935980 A CN106935980 A CN 106935980A CN 201710044836 A CN201710044836 A CN 201710044836A CN 106935980 A CN106935980 A CN 106935980A
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- China
- Prior art keywords
- metal
- horn
- radiofrequency signal
- frequency range
- different frequency
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/526—Electromagnetic shields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Waveguide Aerials (AREA)
Abstract
The box horn of a kind of transmitting different frequency range radiofrequency signal proposed by the present invention, it is desirable to provide a kind of simple structure, easy processing, can realize the emitter of multi-frequency band radio-frequency signal simultaneous transmission.The present invention is achieved by following proposal：Metal level (2) is connect in external agency layer (1), external agency layer and metal level are coaxially fixed on the small end of metal horn body (4) conical horn in the vertical, and external agency layer extends to form loudspeaker dielectric layer (3) by conical horn portlet along the taper surface of metal horn body (4)；The radiofrequency signal of different frequency range is respectively by the medium body region and metal level (2) conductor cavity of outer dielectric layer (1), simultaneous transmission is launched to conical horn portlet through loudspeaker dielectric layer (3) areas of dielectric and metal horn body (4) conductor cavity.The present invention solves the guided wave structure radiofrequency signal for being only capable of transmitting same frequency range of prior art radiofrequency signal, and structure-integrated problem cannot be realized with antenna.
Description
Technical field
Multi-frequency band radio-frequency signal simultaneous transmission and transmitting can be realized the present invention relates to one kind, transmission line is realized with antenna
Structure-integrated emitter.
Background technology
The antenna that base station uses is divided into transmitting antenna and reception antenna, and has dividing for omnidirectional and orientation, can typically have following
Three kinds of configuration modes：Send out omnidirectional, receive to mode；Hair omnidirectional, receipts oriented approach；Hair orientation, receipts oriented approach.Can from literal
To understand the difference of each way, hair omnidirectional is mainly responsible for comprehensive signal and sends；Receive to being naturally connecing for bearing signal
Receive；The meaning of orientation is exactly only to be transmitted and receive towards a fixed angle.Generally, the less base station of channel number
(as being located at suburb) frequently with hair omnidirectional, receive to mode, and the more base station of channel number using hair omnidirectional, receive the side of orientation
Formula, and the foundation of base station is also more more intensive than suburb.
When wave frequency is less than 100khz, electromagnetic wave can be absorbed by earth's surface, can not form effective transmission, but electromagnetism
When wave frequency rate, is higher than 100khz, electromagnetic wave can be propagated in atmosphere, and through the ionospheric reflection of atmosphere outer rim, form long distance
From transmittability, the frequency electromagnetic waves with long-distance transmissions ability are turned into radio frequency by we.Information source is used by secondary modulation
To opposite end, opposite end counter modulation is reapplied cable transmission after information source is reduced, and is also radio frequency transmission side no matter how low frequency is
Formula, if not modulating counter modulation process, is simply sent to information source cable opposite end and directly uses, no matter frequency has many
Height, is all general wire transmission mode.Power information source (analog or digital) is modulated (amplitude modulation or tune with high frequency electric
), frequently radiofrequency signal is formed, is transmitted into the air by antenna；Counter modulation will be carried out after rf signal reception at a distance, be reduced into electricity
Information source, this process is referred to as being wirelessly transferred.The cable of connection Antenna+Transmitter output end or receiver inlet is referred to as passing
Defeated line or feeder line.The main task of transmission line is effectively transmitted signal energy, the signal power that it can send emitter with
Minimum loss is sent to the input of transmitting antenna, or the signal that antenna is received and is sent to receiver with minimum loss
Input, while itself should not be picked up or produce stray signals, this requires that transmission line must be shielded.In cable transmission
In, different transmission mediums produce influence to signaling rate and wavelength.The electric medium constant ε r of different medium are different, wavelength and
Dielectric constant relation is as follows:λ=wavelength (m) C=the light velocity (3*108m/s) f=frequency (Hz) ε r=electric medium constants are except sky
Gas, All Media all has an impact phase and wavelength relationship to wavelength and transmission speed.In a transmission link, work as rightabout
During the signal of two same frequencys of simultaneous transmission, what is obtained during test is a superposed signal, in opposite direction due to two signals,
Superposed signal is caused no longer to be transmitted along a direction, now this signal is called " standing wave ".Impedance and damped impedance cable structure
Influence to cable impedance:The electric medium constant (ε r) of impedance and internal and external conductor diameter ratio and insulating materials is relevant, and work
Working frequency and length of cable are unrelated.Impedance and decay are described signal and are damaged by the energy signal energy that transmission medium is lost
Mistake is generally caused by following reason:1. impedance；2. return loss；3. signal attenuation is reduced by the signals leakiness of outer conductor
Approach:1. overstriking line footpath；2. impedance is reduced；3. the electric medium constant (ε r) of insulating materials is reduced.According to the transmission principle of ripple,
Not like-polarized signal transmits unaffected mutually in same path.The signal beam that antenna is sent comprising a main lobe and
Some secondary lobes, different according to position, secondary lobe can be divided into secondary lobe again, and lower secondary lobe and rear these secondary lobes of secondary lobe are that nothing is fastened a bit
Want, but some are the main lobes that highly important Sidelobe Suppressions refer to the signal that a certain signal secondary lobe sends to another antenna
Influence the first secondary lobe in upper secondary lobe is made as horizontal level with certain angle of declination (Down Tilt) when antenna, if this secondary lobe
There is no enough suppression, then influence whether the main lobe of other signals.We can be with from signal imitation figure for angle of declination (Down Tilt)
Find out, the angle of peak value and the horizontal plane formation of main lobe, we are referred to as the inclination angle (Tilt) of antenna, and this angle can be for just
(Up-tilt), or bear (Down-tilt), or be zero.The inclination angle of usual antenna is all angle of declination (Down-tilt).
It is only that beam elevation plane is defined that mechanical tilt changes the gradient inclinations angle of antenna by the regulation of setting angle
, and the unrelated angle of declinations of horizontal plane (Down Tilt) is by the regulation to antenna tilt angle, so as to change MPS process face
Product, reaches the purpose for coordinating whole overlay network.
Transmission line is the basis for designing radio-frequency unit and system, and the transmission of radiofrequency signal depends on transmission line, therefore transmission
The research of line is effectively transmitted extremely important for how to realize radiofrequency signal, and it effectively can be transmitted to radiofrequency signal,
The loss of signal is reduced simultaneously.The transmission line structure form of current transmission radiofrequency signal generally has：Coaxial line, metal wave
Lead, microstrip line etc..Effectively can be transmitted for radiofrequency signal by these transmission lines, while having relatively low loss.But
These radio-frequency transmission lines all have one problem of identical, it is impossible to the radiofrequency signal of simultaneous transmission different frequency range, and and antenna
Cannot realize structure-integrated.
Cannot be while launch the radiofrequency signal of different frequency range in order to solve current radio frequency transmission line, and cannot be real with antenna
The problem of existing fully integratedization, the present invention proposes a kind of box horn of transmitting different frequency range radiofrequency signal.
The content of the invention
The object of the invention be directed to current radio frequency transmission line cannot simultaneous transmission different frequency range radiofrequency signal, and with day
Line cannot realize structure-integrated problem, there is provided a kind of simple structure, it is easy to which processing realizes that electromagnetic energy degree of screening is high, screen
Cover characteristic strong.Multi-frequency band radio-frequency signal simultaneous transmission can be realized, and transmission line can realize structure one with antenna in structure
The emitter of body.
Above-mentioned purpose of the invention can be achieved by the following technical programs, a kind of transmitting different frequency range radio frequency
The box horn of signal, including：External agency layer 1, metal level 2 and metal horn body 4, it is characterised in that：Metal level 2 is formed with
Hollow cavity, metal level 2 is connect in external agency layer 1, and external agency layer 1 and metal level 2 are coaxially fixed on metal loudspeaker in the vertical
The small end of the conical horn of body 4, external agency layer 1 extends shape by conical horn portlet along the taper surface of metal horn body 4
Into loudspeaker dielectric layer 3；The radiofrequency signal of different frequency range medium body region respectively by outer dielectric layer 1 and the conductor chamber of metal level 2
Body, simultaneous transmission to conical horn portlet is carried out through the areas of dielectric of loudspeaker dielectric layer 3 and the conductor cavity of metal horn body 4
Transmitting.
The present invention has the advantages that compared to prior art：
Simple structure, it is easy to process.The present invention is by outer dielectric layer 1, inner metal layer 2, horn body loudspeaker dielectric layer 3 and metal loudspeaker
Body 4 is constituted, and its China and foreign countries' dielectric layer can be constituted with the dielectric material of differing dielectric constant.Penetrated relative to existing frequently-used
Frequency transmission line, such as coaxial line, metal waveguide, microstrip line, co-planar waveguide are guided wave structure, of the invention by transmitting antenna and transmission line
It is in structure an entirety, it is its simple structure, easy to process with obviously structural advantage, multiband can be realized
Radiofrequency signal is launched simultaneously, and can be reduced launch loss, be reduced alignment error, is led so as to solve prior art radiofrequency signal
Wave structure is only capable of transmitting the radiofrequency signal of same frequency range, and structure-integrated problem cannot be realized with antenna.The emitter energy
Enough realize that multi-frequency band radio-frequency signal is launched simultaneously, so that the utilization rate of radio-frequency line is improved, while cost-effective.
Electromagnetic energy degree of screening is high.Be coupled in the energy efficient of radiofrequency signal in external agency layer region by the present invention,
Reduce radiation loss of the radiofrequency signal in exterior space.Can be to the radiofrequency signal of another frequency range in metal layer itself cavity
It is transmitted, is not in what is interfered with each other between two radiofrequency signals of different frequency range due to the shielding action of metallic cavity
Problem.In actual applications, different dielectric materials and interior metal cavity can be selected according to the frequency range of transmitting radio frequency signal
Size, can be carried out according to the specific requirement of tranmitting frequency and antenna gain in outside dielectric layer and metal electromagnetic horn
Select corresponding size.
Shielding character is superpower.The present invention is connected to the metal horn body 4 in horn body loudspeaker dielectric layer 3 in, can realize
Superpower multi-frequency band radio-frequency signal shielding characteristic, is particularly well-suited to launch simultaneously the radiofrequency signal of different frequency range, can effectively strengthen and penetrate
The utilization rate of frequency circuit, and effectively reduces cost.
There is little radiation field in exterior circumferential in the box horn of transmitting different frequency range radiofrequency signal of the present invention,
Energy of electromagnetic field is propagated by external agency layer, and electromagnetic energy is fettered by external agency layer.Simultaneously because metallic cavity
Shielding action, the radiofrequency signal of another frequency range can be transmitted in metal layer itself cavity, then by horn body
Loudspeaker dielectric layer 3 and metal horn body 4 are launched the radiofrequency signal of different frequency range, realize that multi-frequency band radio-frequency signal is sent out simultaneously
Penetrate, solve the guided wave structure radiofrequency signal for being only capable of transmitting same frequency range of prior art radiofrequency signal, knot cannot be realized with antenna
The problem of structure integration.
Brief description of the drawings
Fig. 1 is the front view of the box horn of transmitting different frequency range radiofrequency signal of the present invention.
Fig. 2 is the left view of Fig. 1.
In figure：1 is outer dielectric layer, and 2 is metal level, and 3 is loudspeaker dielectric layer, and 4 is metal horn body.
Specific embodiment
Refering to Fig. 1.In embodiment described below, a kind of tubaeform day of transmitting different frequency range radiofrequency signal
Line, including：External agency layer 1, metal level 2 and metal horn body 4.Metal level 2 is formed with hollow cavity, is connect in external agency layer 1
Metal level 2, external agency layer 1 and the coaxial small end for being fixed on the conical horn of metal horn body 4 of metal level 2, outside in the vertical
Dielectric layer 1 extends to form loudspeaker dielectric layer 3 by conical horn portlet along the taper surface of metal horn body 4；Different frequency range
Radiofrequency signal is respectively by the medium body region and the conductor cavity of metal level 2 of outer dielectric layer 1, simultaneous transmission to conical horn small end
Mouthful, different frequency range emission of radio frequency signals is gone out through the areas of dielectric of loudspeaker dielectric layer 3 and the conductor cavity of metal horn body 4.
The interior metal cavity of metal horn body 4 is used as radio signal transmission structure, its transmission main mould and standard waveguide phase
Together.Therefore, it is possible to launch the radiofrequency signal of different frequency range simultaneously, can effectively strengthen the utilization rate of radio-frequency line, and effectively reduce into
This.In actual applications, different dielectric material and interior metal cavity can be selected according to the frequency range of transmitting radio frequency signal
Size.And can be wanted according to tranmitting frequency and the specific of antenna gain in horn body loudspeaker dielectric layer 3 and metal horn body 4
Ask to be selected.The electromagnetic energy of radiofrequency signal is gathered in external agency layer region and metal layer itself region.
The specific requirement of the outer dielectric layer 3 of loudspeaker and the geometry of metal horn body 4 according to tranmitting frequency and antenna gain
To be selected.
The metal wave conductor that metal level 2 is formed can be realized putting down by suspending micro-strip, fin line transmission line and planar circuit
Face interconnects.
Present invention specific implementation can use following steps：
Required according to working frequency range first, determine frequency passband, select suitable outer media material and interior metal cavity
Material, is then selected in outside dielectric layer and metal electromagnetic horn according to the specific requirement of tranmitting frequency and antenna gain
Select corresponding size.Using microwave circuit CASE(Computer Aided Software Engineering), the structure of Fig. 1 is set up, the transmission characteristic design needed for setting
Target, by the Optimized Program of software, so that it is determined that each unit parameter.
Claims (6)
1. a kind of box horn of transmitting different frequency range radiofrequency signal, including：External agency layer (1), metal level (2) and
Metal horn body (4), it is characterised in that：Metal level (2) is formed with hollow cavity, and metal level (2) is connect in external agency layer (1),
External agency layer (1) and the coaxial small end for being fixed on metal horn body (4) conical horn of metal level (2), external agency on longitudinal direction
Layer (1) extends to form loudspeaker dielectric layer (3) by conical horn portlet along the taper surface of metal horn body (4)；Different frequency range
Radiofrequency signal respectively by the medium body region and metal level (2) conductor cavity of outer dielectric layer (1), simultaneous transmission to taper loudspeaker
Portlet, is launched through loudspeaker dielectric layer (3) areas of dielectric and metal horn body (4) conductor cavity.
2. the box horn of transmitting different frequency range radiofrequency signal as claimed in claim 1, it is characterised in that：Metal loudspeaker
Body (4) interior metal cavity is used as radio signal transmission structure, and its transmission main mould is identical with standard waveguide.
3. the box horn of transmitting different frequency range radiofrequency signal as claimed in claim 1, it is characterised in that：Horn body
Specific requirement of the material and size of loudspeaker dielectric layer (3) and metal horn body (4) according to tranmitting frequency and antenna gain
To be selected.
4. the box horn of transmitting different frequency range radiofrequency signal as claimed in claim 1, it is characterised in that：Radio frequency is believed
Number electromagnetic energy be gathered in external agency floor region and metal layer itself region.
5. the box horn of transmitting different frequency range radiofrequency signal as claimed in claim 1, it is characterised in that：Outside loudspeaker
Dielectric layer (3) and metal horn body (4) geometry are selected according to the specific requirement of tranmitting frequency and antenna gain.
6. the box horn of transmitting different frequency range radiofrequency signal as claimed in claim 1, it is characterised in that：Metal level
(2) metal wave conductor for being formed can realize that plane is interconnected by suspending micro-strip, fin line transmission line and planar circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710044836.5A CN106935980A (en) | 2017-01-20 | 2017-01-20 | The box horn of transmitting different frequency range radiofrequency signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710044836.5A CN106935980A (en) | 2017-01-20 | 2017-01-20 | The box horn of transmitting different frequency range radiofrequency signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106935980A true CN106935980A (en) | 2017-07-07 |
Family
ID=59423939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710044836.5A Pending CN106935980A (en) | 2017-01-20 | 2017-01-20 | The box horn of transmitting different frequency range radiofrequency signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106935980A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108682945A (en) * | 2018-05-04 | 2018-10-19 | 北京邮电大学 | A kind of electromagnetic horn and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6081170A (en) * | 1997-09-01 | 2000-06-27 | Sharp Kabushiki Kaisha | Dual frequency primary radiator |
| US20020149532A1 (en) * | 2001-04-16 | 2002-10-17 | Te-Kao Wu | Dual frequency coaxial feed with suppressed sidelobes and equal beamwidths |
| CN203553357U (en) * | 2013-10-25 | 2014-04-16 | 深圳光启创新技术有限公司 | Horn antenna |
-
2017
- 2017-01-20 CN CN201710044836.5A patent/CN106935980A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6081170A (en) * | 1997-09-01 | 2000-06-27 | Sharp Kabushiki Kaisha | Dual frequency primary radiator |
| US20020149532A1 (en) * | 2001-04-16 | 2002-10-17 | Te-Kao Wu | Dual frequency coaxial feed with suppressed sidelobes and equal beamwidths |
| CN203553357U (en) * | 2013-10-25 | 2014-04-16 | 深圳光启创新技术有限公司 | Horn antenna |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108682945A (en) * | 2018-05-04 | 2018-10-19 | 北京邮电大学 | A kind of electromagnetic horn and preparation method thereof |
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Application publication date: 20170707 |