CN107369879A - A kind of antenna - Google Patents
A kind of antenna Download PDFInfo
- Publication number
- CN107369879A CN107369879A CN201710626730.6A CN201710626730A CN107369879A CN 107369879 A CN107369879 A CN 107369879A CN 201710626730 A CN201710626730 A CN 201710626730A CN 107369879 A CN107369879 A CN 107369879A
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- Prior art keywords
- antenna
- input
- impedance
- line transformer
- signal
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
-
- 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
Abstract
The present invention relates to antenna technical field, more particularly to a kind of antenna.The antenna is arranged on antenna holder by rotatable component, the antenna first passes through first order line transformer and realizes wideband impedance match and the uneven conversion to balance of circuit, wideband impedance match is realized by second level line transformer again, make the input impedance and parallel lines radiator and terminal distributed terminator impedance matching, the impedance of each input/output port of the antenna is reached matching.The parallel lines radiator will be launched to free space after the conversion of the output signal of second level line transformer.Pass through above-mentioned technical proposal, solve in the prior art when low-frequency high-power signal is input to antenna, the impedance matching of each input/output terminal of antenna is poor, the problem of standing wave is larger, having reached makes antenna when low-frequency high-power signal inputs, sending-end impedance matching is preferable, and standing-wave ratio reduces technique effect.
Description
Technical field
The present invention relates to antenna technical field, more particularly to a kind of antenna.
Background technology
With the development of electric and electronic technology, electromagnetic environment is increasingly complicated and deteriorates so that the electromagnetism of electrical and electronic product
Compatibility issue also receives increasing attention.The Electro Magnetic Compatibility of electronic product be not only related to the functional reliability of product in itself and
Safety in utilization, but also the normal work of other equipment and system may be had influence on.
In the prior art, when carrying out electromagnetic compatibility detection, when low-frequency high-power signal is input to antenna, antenna is each
The problem of impedance matching of input/output terminal is bad, causes antenna to produce larger reflection, and standing-wave ratio differs greatly.
The content of the invention
The embodiment of the present application provides a kind of antenna, solves in the prior art when low-frequency high-power signal is input to antenna
When, the problem of impedance matching of each input/output terminal of antenna is bad, and standing-wave ratio differs greatly, having reached makes antenna in the big work(of low frequency
When rate signal inputs, each input/output terminal impedance matching, reduce the technique effect of standing-wave ratio.
The embodiment of the present application provides a kind of antenna, and the antenna is arranged on antenna holder by rotatable component, described
Antenna includes：Input port, the input port receive the first input signal, first input signal are sent to the first order
Line transformer, wherein, first input signal includes the first input impedance Ra1 and the first input voltage, wherein, Ra1
It is unbalanced to ground voltage more than 0, first input voltage；First order line transformer, the first order line transformer
It is connected with the input port, obtains first input signal from the input port, by first input signal
The second input signal is converted to, second input signal is sent to second level line transformer, wherein, described first is defeated
Enter impedance Ra1 it is converted after turn into the second input impedance Ra2, first input voltage is converted into the second input voltage, its
In, the Ra2 is m times of Ra1, and the m is more than 0, and second input voltage is that two sizes are identical, completely anti-phase over the ground
Voltage；Second level line transformer, the second level line transformer are connected with the first order transmission transformer, are obtained
Second input signal from the first order line transformer, second input signal is converted into the first output
Signal, first output signal is sent to parallel lines radiator, wherein, after the second input impedance Ra2 is converted into
For the first output impedance Ra0, turn into two the first output voltages after second input voltage is converted, wherein, the Ra0 is
N times of Ra2, the n be more than 0, described two first output voltages and equal to second input voltage；Parallel beta radiation
Device, the parallel lines radiator are connected with the second level line transformer and terminal distributed terminator respectively, and reception comes from
First output signal of the second level line transformer, first output signal is converted into the second output letter
Number, second output signal is launched to free space；Wherein, the impedance of the parallel lines radiator is Rb1, the terminal
The impedance of distributed terminator is Rb2, and the size of the Ra0 is equal to Rb1 and Rb2 sums, and Rb1 is more than 0, Rb2 and is more than 0.
Further, the antenna holder also includes:Base assembly；Vertical component, one end of the vertical component pass through
Anchoring base is connected with the base assembly；Rotatable component, one end of the rotatable component are another with the vertical component
One end is connected, and the other end of the rotatable component is connected with the antenna, for adjusting the angle of the antenna.
Further, the material of the antenna holder is ceramoplastic.
Further, the operating frequency range of the antenna is 10KHz~100MHz.
Further, the first input impedance Ra1 is 50 Ω.
Further, the m is 4, n 1.885, and Ra0 is 377 Ω.
Further, the material of the terminal distributed terminator includes tantalum nitride membrane.
Said one or multiple technical schemes in the embodiment of the present application, at least there is following one or more technology effects
Fruit：
1st, the embodiment of the present application is arranged on antenna holder by providing a kind of antenna, the antenna by rotatable component
On, the antenna first passes through first order line transformer and realizes wideband impedance match and the uneven conversion to balance of circuit,
Wideband impedance match is realized by second level line transformer again, makes the input impedance and parallel lines radiator and terminal point
The impedance sum matching of cloth load, makes the impedance of each input/output port of the antenna reach matching.The parallel beta radiation
Device will be launched to free space after the conversion of the output signal of second level line transformer.Pass through above-mentioned technical proposal, solution
Determine in the prior art when low-frequency high-power signal is input to antenna, the impedance matching of each input/output terminal of antenna is bad, stays
The problem of Bob differs greatly, having makes antenna when low-frequency high-power signal inputs, each input/output terminal impedance matching, reduces
The technique effect of standing-wave ratio difference.
2nd, the embodiment of the present application has the skill for meeting the needs of user adjusts aerial angle by using the antenna holder
Art effect.
3rd, the material of the antenna holder of the embodiment of the present application is that ceramoplastic is used as material, with making antenna system signal steady
Fixed technique effect.
4th, the material of the terminal distributed terminator of the embodiment of the present application is tantalum nitride membrane, has and keeps antenna system work
In stable condition technique effect.
Brief description of the drawings
Fig. 1 is a kind of antenna structure view that the embodiment of the present application provides；
Fig. 2 is a kind of antenna holder structural representation that the application provides；
Fig. 3 is a kind of first order line transformer impedance inverter circuit figure that the application provides；
Fig. 4 is a kind of second level line transformer impedance inverter circuit figure that the application provides；
In figure：1- antennas, 2- antenna holders, 11- input ports, 12- first order line transformers, the 13- second level pass
Defeated line transformer, 14- parallel lines radiators, 15- terminal distributed terminators, 21- base assemblies, 22- vertical components, 23- are fixed
Substrate, 24- rotatable components.
Embodiment
The embodiment of the present application provides a kind of antenna, solves in the prior art when low-frequency high-power signal is input to antenna
When, the problem of impedance matching of each input/output terminal of antenna is bad, and standing-wave ratio differs greatly, having reached makes antenna in the big work(of low frequency
When rate signal inputs, each input/output terminal impedance matching, the technique effect of reduction standing-wave ratio difference.
The technical scheme of the embodiment of the present application is in order to solve the above technical problems, general thought is as follows：
The embodiment of the present application is arranged on antenna holder by providing a kind of antenna, the antenna by rotatable component,
The antenna first passes through first order line transformer and realizes wideband impedance match and the uneven conversion to balance of circuit, then leads to
Cross second level line transformer and realize wideband impedance match, make the input impedance and parallel lines radiator and terminal distributed
The impedance matching of load, the impedance of each input/output port of the antenna is set to reach matching.The parallel lines radiator will come from
Launch after the output signal conversion of second level line transformer to free space.Pass through above-mentioned technical proposal, solve existing
In technology when low-frequency high-power signal is input to antenna, the impedance matching of each input/output terminal of antenna is bad, standing-wave ratio difference
The problem of larger, having reached makes antenna when low-frequency high-power signal inputs, each input/output terminal impedance matching, reduces standing-wave ratio
The technique effect of difference.
Technical solution of the present invention is described in detail below by accompanying drawing and specific embodiment, it should be understood that the application
Specific features in embodiment and embodiment are the detailed description to technical scheme, rather than to present techniques
The restriction of scheme, in the case where not conflicting, the technical characteristic in the embodiment of the present application and embodiment can be mutually combined.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, expression may have three kinds of passes
System, for example, A and/or B, can be represented：Individualism A, while A and B be present, these three situations of individualism B.In addition, herein
Middle character "/", it is a kind of relation of "or" to typically represent forward-backward correlation object.
Embodiment 1：
Fig. 1 is a kind of structural representation for antenna that the embodiment of the present application provides, and Fig. 2 is one that the embodiment of the present application provides
The schematic diagram of kind antenna holder.The antenna 1 is arranged on antenna holder 2 by rotatable component 24, and the antenna 1 includes：
Input port 11, first order line transformer 12, second level line transformer 13, parallel lines radiator 14, terminal distribution
Formula load 15；The antenna holder 2 includes：Base assembly 21, vertical component 22, anchoring base 23, rotatable component 24.
Introduce the composed component of the antenna 1 one by one below.
Input port 11, the input port 11 receive the first input signal, and first input signal is sent to the
Primary Transmit line transformer 12, wherein, first input signal includes the first input voltage and the first input impedance Ra1, Ra1
It is unbalanced to ground voltage more than 0, first input voltage；
Specifically, first input signal refers to EMC to be measured (electromagnetic compatibility) signal, is inputted from power amplifier
To the input port 11, including the information such as frequency, power, the first input impedance Ra1 and the first input voltage.Described first is defeated
It is 50 Ω to enter impedance Ra1 in antenna system, is matched with power amplifier, and the first input voltage is unbalanced to ground voltage.
The input port 11 sends first input signal to first order line transformer 12.
First order line transformer 12, the first order line transformer 12 are connected with the input port 11, obtained
First input signal from the input port 11 is obtained, first input signal is converted into the second input signal,
Second input signal is sent to second level line transformer 13, wherein, after the first input impedance Ra1 is converted
As the second input impedance Ra2, turn into the second input voltage after first input voltage is converted, wherein, the Ra2 is
M times of Ra1, the m are more than 0, and second input voltage is that two sizes are identical, anti-phase voltage completely over the ground；
Specifically, the first order line transformer 12 is connected with the input port 11, is received from described defeated
First input signal of inbound port 11, first input signal is converted into the second input signal.Wherein, first input
It is 4 to turn into the second input impedance Ra2, the m after impedance Ra1 is converted, that is to say, that the second input impedance is 200 Ω, described
Conversion of first input voltage through the first order line transformer, export the second input voltage, second input voltage
For two sizes are identical, anti-phase voltage completely over the ground.It is illustrated in figure 3 the impedance conversion of the first order line transformer
Basic circuit diagram, input are point 1 and point 7, and output end is respectively 2 and 4,6 and 8, wherein between 1 and 2,3 and 4,5 and 6,7 and 8
Transmission line resistance it is equal be R, realize input and output impedance 1:4 and the uneven conversion to balance of circuit.Further, institute
First order line transformer is stated to send second input signal to second level line transformer 13.
Second level line transformer 13, the second level line transformer 13 and the first order transmission transformer 12
Connection, obtains second input signal from the first order line transformer 12, and second input signal is turned
The first output signal is changed to, first output signal is sent to parallel lines radiator 14, wherein, second input impedance
Turn into the first output impedance Ra0 after Ra2 is converted, turn into two the first output voltages after second input voltage is converted,
Wherein, the Ra0 is n times of Ra2, and the n is more than 0, described two first output voltages and equal to the described second input electricity
Pressure；
Specifically, the second level line transformer 13 is connected with the first order line transformer 12, is received
Second input signal from the first order line transformer 12, it is defeated that second input signal is converted to first
Go out signal, first output signal is sent to parallel lines radiator 14.Wherein, the second input impedance Ra2 is 200
It is the first output impedance Ra0 after Ω, the Ra2 are converted, the size of first output impedance is equal to free space
Impedance, the matches impedances with free space, the impedance value of the free space is 377 Ω.It is illustrated in figure 4 the second level
The impedance shift theory circuit diagram of line transformer, point 1 and point 4 are input end interface, and point 1 and point 6 are output end interface.It is defeated
Enter voltage V, according to Ohm's law, output voltage 3V/2.Resistance is R, can be obtained according to circuit diagram principle, input impedance and output
The ratio of impedance is 1:2.25.In order that the first output impedance Ra0 value reaches 377 Ω, with the second input impedance Ra2's
Ratio is 377/200=1.885, then in Fig. 4, the length of transmission line between point of adjustment 5 and point 6, output impedance is reached 377
Ω.
Parallel lines radiator 14, the parallel lines radiator 14 respectively with the second level line transformer 13 and terminal
Distributed terminator 15 connects, and receives first output signal from the second level line transformer 13, by described
One output signal is converted to the second output signal, and second output signal is launched to free space；
Specifically, the parallel lines radiator 14 is distributed with the second level line transformer 13 and terminal respectively
The connection of load 15.The impedance of the parallel lines radiator 14 is Rb1, and the impedance of the terminal distributed terminator 15 is Rb2.It is described
First output impedance Ra0 is 377 Ω, and the Rb1 and Rb2 sums are also 377 Ω.The second level line transformer output
The Ω of impedance 377 and parallel lines radiator and terminal the distributed terminator Ω of impedance sum 377 match.Parallel lines radiator and end
Distributed terminator impedance matching is held, the impedance of each input/output port of the antenna is reached matching.The parallel lines radiator
First output signal from second level line transformer is converted into the second output signal, the described second output is believed
Number transmitting is to free space.
As shown in Fig. 2 the antenna holder 2 also includes:Base assembly 21；Vertical component 22, the vertical component 22
One end is connected by anchoring base 23 with the base assembly 21, and the Fixed Base 23 is rectangle laminated structure；Rotatably
Component 23, one end of the rotatable component 23 are connected with the other end of the vertical component 22, the rotatable component 23
The other end is connected with the antenna 1, to adjust the angle of the antenna 1, has reached and has met the needs of user adjusts aerial angle
Technique effect.
Further, the material of the antenna holder 2 is ceramoplastic, the ceramoplastic high temperature resistant and insulation, is not easy
Aerial signal is influenceed, there is the technique effect for making antenna system signal stabilization.
Further, the operating frequency range of the antenna 1 is 10KHz~100MHz, and frequency band range is wide.
Further, the material of the terminal distributed terminator 15 is tantalum nitride membrane, and the tantalum nitride membrane fusing point is high,
Temperature-coefficient of electrical resistance is small, and stability is high, has the technique effect for keeping antenna system stable working state.
A kind of antenna provided in the embodiment of the present application, at least has the following technical effect that：
1st, the embodiment of the present application is arranged on antenna holder by providing a kind of antenna, the antenna by rotatable component
On, the antenna first passes through first order line transformer and realizes wideband impedance match and the uneven conversion to balance of circuit,
Wideband impedance match is realized by second level line transformer again, makes the input impedance and parallel lines radiator and terminal point
The impedance matching of cloth load, makes the impedance of each input/output port of the antenna reach matching.The parallel lines radiator will
Launch after output signal conversion from second level line transformer to free space.Pass through above-mentioned technical proposal, solve
In the prior art when low-frequency high-power signal is input to antenna, the impedance matching of each input/output terminal of antenna is bad, standing-wave ratio
The problem of differing greatly, having reached makes antenna each input/output terminal impedance matching, reduction is stayed when low-frequency high-power signal inputs
The technique effect of Bob difference.
2nd, the embodiment of the present application has the skill for meeting the needs of user adjusts aerial angle by using the antenna holder
Art effect.
3rd, the material of the antenna holder of the embodiment of the present application is that ceramoplastic is used as material, with making antenna system signal steady
Fixed technique effect.
4th, the material of the terminal distributed terminator of the embodiment of the present application is tantalum nitride membrane, has and keeps antenna system work
In stable condition technique effect.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (7)
1. a kind of antenna, the antenna is arranged on antenna holder by rotatable component, it is characterised in that the antenna bag
Include：
Input port, the input port receive the first input signal, and first input signal is sent to the first order and transmitted
Line transformer, wherein, first input signal includes the first input impedance Ra1 and the first input voltage, wherein, Ra1 is more than
0, the first input voltage is unbalanced to ground voltage；
First order line transformer, the first order line transformer are connected with the input port, are obtained from described
First input signal of input port, first input signal is converted into the second input signal, it is defeated by described second
Enter signal to send to second level line transformer, wherein, turn into the second input after the first input impedance Ra1 is converted and hinder
Anti- Ra2, first input voltage are converted into the second input voltage, wherein, the Ra2 is m times of Ra1, and the m is more than 0,
Second input voltage is that two sizes are identical, anti-phase voltage completely over the ground；
Second level line transformer, the second level line transformer are connected with the first order transmission transformer, are obtained
Second input signal from the first order line transformer, second input signal is converted into the first output
Signal, first output signal is sent to parallel lines radiator, wherein, after the second input impedance Ra2 is converted into
For the first output impedance Ra0, turn into two the first output voltages after second input voltage is converted, wherein, the Ra0 is
N times of Ra2, the n be more than 0, described two first output voltages and equal to second input voltage；
Parallel lines radiator, the parallel lines radiator respectively with the second level line transformer and terminal distributed terminator
Connection, receives first output signal from the second level line transformer, and first output signal is changed
For the second output signal, second output signal is launched to free space；
Wherein, the impedance of the parallel lines radiator is Rb1, and the impedance of the terminal distributed terminator is Rb2, the Ra0's
Size is equal to Rb1 and Rb2 sums, and Rb1 is more than 0, Rb2 and is more than 0.
2. antenna as claimed in claim 1, it is characterised in that the antenna holder also includes:
Base assembly；
Vertical component, one end of the vertical component are connected by anchoring base with the base assembly；
Rotatable component, one end of the rotatable component are connected with the other end of the vertical component, the rotatable component
The other end be connected with the antenna, for adjusting the angle of the antenna.
3. antenna as claimed in claim 1, it is characterised in that the material of the antenna holder is ceramoplastic.
4. antenna as claimed in claim 1, it is characterised in that the operating frequency range of the antenna is 10KHz~100MHz.
5. antenna as claimed in claim 1, it is characterised in that the first input impedance Ra1 is 50 Ω.
6. antenna as claimed in claim 1, it is characterised in that the m is 4, n 1.885, and Ra0 is 377 Ω.
7. antenna as claimed in claim 1, it is characterised in that it is thin that the material of the terminal distributed terminator includes tantalum nitride
Film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710626730.6A CN107369879B (en) | 2017-07-26 | 2017-07-26 | Antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710626730.6A CN107369879B (en) | 2017-07-26 | 2017-07-26 | Antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107369879A true CN107369879A (en) | 2017-11-21 |
| CN107369879B CN107369879B (en) | 2020-01-07 |
Family
ID=60307700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710626730.6A Active CN107369879B (en) | 2017-07-26 | 2017-07-26 | Antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107369879B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112262499A (en) * | 2018-07-05 | 2021-01-22 | 三星电子株式会社 | Antenna module using transmission line length and electronic device including the same |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107369879B (en) | 2020-01-07 |
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