CN109524759A - A kind of 18 meters of antennas - Google Patents
A kind of 18 meters of antennas Download PDFInfo
- Publication number
- CN109524759A CN109524759A CN201811216575.1A CN201811216575A CN109524759A CN 109524759 A CN109524759 A CN 109524759A CN 201811216575 A CN201811216575 A CN 201811216575A CN 109524759 A CN109524759 A CN 109524759A
- Authority
- CN
- China
- Prior art keywords
- bar
- meters
- loading device
- antennas
- antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H01Q1/36—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
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- 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
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
Landscapes
- Details Of Aerials (AREA)
Abstract
The invention discloses a kind of 18 meters of antennas, are related to field of antenna.Including aerial signal amplifying device, top bar, upper bar, middle part bar, lower pole, top loading device, middle part loading device, it is characterized in that the aerial signal amplifying device is fixed on top bar top, top bar is connected by top loading device with upper bar, upper bar is connected by middle part loading device with middle part bar, and middle part bar is connected directly with lower pole.Beneficial effects of the present invention: making 18 meters of antennas have preferable directionality, and more general antenna has high gain, enhances signal；The effective height of 18 meters of antennas is improved, to improve the radiation efficiency of 18 meters of antennas；With very wide frequency characteristic；Loading position is optimized, the workload of repetition test is substantially reduced, achieve the purpose that design and is applicable in.
Description
Technical field
The present invention relates to field of antenna, in particular to a kind of 18 meters of antennas.
Background technique
Antenna is a kind of converter, and the guided wave propagated on transmission line is transformed into the electricity propagated in unbounded medium by it
Magnetic wave, or carry out opposite transformation.It is used to emit or receive the component of electromagnetic wave in wireless device.Radio communication,
The engineering systems such as broadcast, TV, radar, navigation, electronic countermeasure, remote sensing, radio astronomy, it is all to use electromagnetic waves to transmitting letter
Breath, antenna is depended on to work.
The development of radio technology, it is closely related with the development of antenna technology.Short-wave receiving antenna design now, generally
Using active and passive two methods.The design of passive antenna generallys use the ratio of received maximum power and power density
Determine the effective aperture of antenna.The design of active antenna compensates passive antenna with the gain of active electric network because size becomes smaller institute
Caused by gain decline, thus reach reduction antenna size purpose.Among these, 18 meters of antenna structures are a kind of high-precision machines
Tool structure, in national defence, communication, space industry extensive application.
Summary of the invention
It is an object of the invention to: a kind of 18 meters of antennas are provided, it is low to solve short-wave antenna radiation efficiency, conventional aerial
Sense is poor, and signal strength is weak, receives poor sensitivity, the non-uniform problem of input impedance in 1MHz-8MHz.
The technical solution adopted by the invention is as follows:
A kind of 18 meters of antennas, including aerial signal amplifying device, top bar, upper bar, middle part bar, lower pole, top add
Sensor, middle part loading device, the aerial signal amplifying device are fixed on one end of top bar, the other end of top bar by with
One end of top loading device is connected, and the other end of top loading device is connected with one end of upper bar, and the other end of upper bar is in
One end of portion's loading device is connected, and the other end of middle part loading device is connected with one end of middle part bar, the other end of middle part bar and lower part
Bar is connected.
Through the above technical solutions, the series loop that loading device in top uses makes the reduction of circuit Q value, make the electric current on antenna
Distribution close to uniformly, improves the radiation efficiency of antenna as far as possible.The broadening signal in the shunt-resonant circuit that middle part loading device is formed
Frequency band solves and receives poor sensitivity, the non-uniform problem of input impedance in 1MHz-8MHz.
The series resonant tank that the top loading device is made of a resistance and an inductance, but due to top bar with
Insulator between the bar of middle part makes have a distribution capacity between the two, therefore top loading device is actually a resonant tank.When
Working frequency f is lower than foWhen, circuit is in perception；When working frequency f is higher than foWhen, circuit is in capacitive, the resistance of top loading device
R1 plays a part of to reduce circuit Q value.
The shunt-resonant circuit that the middle part loading device is made of an inductance, a capacitor, a resistance has class
Like the characteristic of top loading device, only resonance frequency is different.Top bar is used to improve the characteristic of low frequency end, is lower than when receiving frequency
When the parallel resonance frequency of loading coil and stray capacitance, equivalent impedance plays growth antenna, loading device institute in perception
Attached damping resistance reduces the Q value of resonant tank, makes resonance curve rust, to adapt to the needs of all channel antenna, middle part loading
Slightly less than centre frequency is usually selected with the resonance frequency of stray capacitance composition, thereby realizes the automatic tune of antenna oscillator length
Whole effect realizes width so that input impedance and the directional diagram in vertical plane be made to change in very wide frequency range less
Frequency band.
There is top drawstring in the upper bar, is connect by earth anchor with ground netting line；There is lower part drawstring on lower pole, passes through ground
Anchor is connect with ground netting line, and lower pole is directly vertically below connect with transformer, and transformer is directly vertically below connect with built-in fitting, is made
18 meters of antenna structures are more stable.
It is described: in conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1. 18 meters of antennas of one kind of the invention, as h/ λ < < 1, electric current is distributed by sinusoidal rule on 18 meters of antennas, antenna top
The electric current in portion is zero, the electric current very little close to antenna top, so radiation efficiency is very low near antenna top.Pass through inductance
Coil improves the current distribution on antenna, is allowed to the effective height of antenna be improved, to improve day close to uniformly as far as possible
The radiation efficiency of line.
2. 18 meters of antennas of one kind of the invention, an open-ended line can be considered as to analyze by being looked upwards by bottom.Eventually
End open circuit first has certain impedance frequency characteristic.When the work of certain size oscillator is in a wider frequency range,
It may include several series resonance frequencys and parallel resonance frequency in its band logical.By the way that appropriate selection is added on 18 meters of antennas
The loading device of resonance frequency, so that it may improve an equivalent network being made of vertical dipole and several sections in series of loading device
Frequency characteristic, to make 18 meters of antennas that there is very wide frequency characteristic.
3. 18 meters of antennas of one kind of the invention can obtain uniform input resistance in operating frequency range 1MHz-8MHz
It is anti-, by field road collaborative simulation, loading position is optimized using genetic iteration algorithm, substantially reduces repetition test
Workload achievees the purpose that design and be applicable in.
4. having drawstring on 18 meters of antennas of one kind of the invention, upper bar and lower pole, it is connect, is made with ground netting line by earth anchor
18 meters of antenna structures are more stable.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is loading device structural schematic diagram of the invention；
Numbering in the drawing explanation: 1- aerial signal amplifying device, 2- top bar, the top 3- loading device, the loading of the top 301-
Device inductance L1,302- top loading device resistance R1,4- upper bar, loading device in the middle part of 5-, loading device inductance L2 in the middle part of 501-,
The top loading device resistance R2,6- drawstring, the middle part 7- bar, the lower part 8- drawstring, 9- lower pole, 10- transformer, 11- are pre- in the middle part of 502-
Embedded part, 12-N type delivery outlet, 13- ground netting line.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and step other than, can combine in any way.
It elaborates below with reference to Fig. 1 to Fig. 2 to the present invention.
Embodiment 1
A kind of 18 meters of antennas by antenna amplification device, the various sizes of mast of four sections, loading coil, transformer, pedestal,
The composition such as earth anchor, drawstring, ground netting line.
1. 304 stainless steel tubes and outer diameter Φ 150mm of lower pole 9 outer diameter Φ 159mm, wall thickness 3mm, the aluminium of wall thickness 4mm
The composition such as pipe and the insulator being made into expoxy glass stringing, high 4703mm, weight 45KG.
2. the outer diameter Φ 120mm of middle part bar 7, the aluminum pipe of wall thickness 4mm, the composition such as cable quadrant and connecting flange, high 4550mm,
Weight 23KG.
3. the outer diameter Φ 90mm of upper bar 4, the aluminum pipe of wall thickness 3mm, cable quadrant, the composition such as loading storehouse and connecting flange are high
4550mm, weight 14KG.
4. the outer diameter Φ 65mm of top bar 2, the composition such as aluminum pipe and connecting flange of wall thickness 2.5mm, high 4500mm, weight
7.7KG。
The aerial signal amplifying device 1 is fixed on one end of top bar 2, and the other end of top bar 2 with top by adding
One end of sensor 3 is connected, and the other end of top loading device 3 is connected with one end of upper bar 4, and the other end of upper bar 4 is in
One end of portion's loading device 5 is connected, and the other end of middle part loading device 5 is connected with one end of middle part bar 7, the other end of middle part bar 7 and
Lower pole 9 is connected.In upper bar 4 there is top drawstring 6 to connect with ground netting line 13, lower pole 9 has lower part drawstring 8 and earth mat
Line 13 is connected, and maintains the stability of 18 meters of antenna structures；Using aerial signal amplifying device, the guiding of signal is enhanced
Property, more general antenna has high gain, enhances signal；The current distribution on antenna is improved by inductance coil, is allowed to the greatest extent
Amount improves the effective height of antenna, to improve the radiation efficiency of antenna close to uniformly.By being added on 18 meters of antennas
The loading device of appropriate selective resonance frequency, so that it may improve one etc. be made of vertical dipole and several sections in series of loading device
The frequency characteristic of network is imitated, to make 18 meters of antennas that there is very wide frequency characteristic.
The above, only the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, it is any
Those skilled in the art within the technical scope disclosed by the invention, the variation that can be expected without creative work
Or replacement, it should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with claims
Defined by subject to protection scope.
Claims (7)
1. a kind of 18 meters of antennas, including aerial signal amplifying device (1), top bar (2), upper bar (4), middle part bar (7), lower part
Bar (9), top loading device (3), middle part loading device (5), it is characterised in that: the aerial signal amplifying device (1) is fixed on top
One end of portion's bar (2), the other end of top bar (2) by being connected with one end of top loading device (3), top loading device (3)
The other end is connected with the one end of upper bar (4), and the other end of upper bar (4) is connected with one end of middle part loading device (5), and middle part adds
The other end of sensor (5) is connected with one end of middle part bar (7), and the other end of middle part bar (7) is connected with lower pole (9).
2. a kind of 18 meters of antennas according to claim 1, it is characterised in that: the top loading device (3) is by an electricity
The series loop of resistance and inductance composition.
3. a kind of 18 meters of antennas according to claim 1, it is characterised in that: the middle part loading device (5) is by an electricity
The shunt-resonant circuit that sense, a capacitor, a resistance form.
4. a kind of 18 meters of antennas according to claim 1, it is characterised in that: have top drawstring on the upper bar (4)
(6), it is connect by earth anchor with ground netting line (13).
5. a kind of 18 meters of antennas according to claim 1, it is characterised in that: have lower part drawstring on the lower pole (9)
(8), it is connect by earth anchor with ground netting line (13).
6. a kind of 18 meters of antennas according to claim 1, it is characterised in that: including transformer (10), the lower pole (9)
Directly vertically below it is connect with transformer (10).
7. a kind of 18 meters of antennas according to claim 6, it is characterised in that: the transformer (10) is directly vertically below and in advance
Embedded part (11) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811216575.1A CN109524759A (en) | 2018-10-18 | 2018-10-18 | A kind of 18 meters of antennas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811216575.1A CN109524759A (en) | 2018-10-18 | 2018-10-18 | A kind of 18 meters of antennas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109524759A true CN109524759A (en) | 2019-03-26 |
Family
ID=65770650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811216575.1A Pending CN109524759A (en) | 2018-10-18 | 2018-10-18 | A kind of 18 meters of antennas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109524759A (en) |
-
2018
- 2018-10-18 CN CN201811216575.1A patent/CN109524759A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190326 |
|
| WD01 | Invention patent application deemed withdrawn after publication |