CN105552560B - A kind of VHF-UHF wave bands broadband isotropic receiving antenna - Google Patents
A kind of VHF-UHF wave bands broadband isotropic receiving antenna Download PDFInfo
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- CN105552560B CN105552560B CN201510926287.5A CN201510926287A CN105552560B CN 105552560 B CN105552560 B CN 105552560B CN 201510926287 A CN201510926287 A CN 201510926287A CN 105552560 B CN105552560 B CN 105552560B
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Abstract
The invention discloses a kind of VHF UHF wavebands broadband isotropic receiving antennas, first structure and the second structure including setting symmetrical above and below, first structure includes the first truncated cone-shaped oscillator, the second conical oscillator and several connecting rods, second structure includes the second truncated cone-shaped oscillator, the first conical oscillator and several connecting rods, first truncated cone-shaped oscillator is connect by connecting rod with the second conical oscillator, second truncated cone-shaped oscillator is connect by connecting rod with the first conical oscillator, and the first conical oscillator and the second conical oscillator are according to the opposite mode coaxial arrangement of cone；First truncated cone-shaped oscillator and the first conical oscillator are located at the same side of antenna feed point, and the second conical oscillator and the second truncated cone-shaped oscillator are located at the opposite side of antenna feed point.Relatively traditional biconical antenna, working band of the present invention is wider, and impedance bandwidth of the standing-wave ratio less than 2.3 is more than four octaves and has the directional diagram of horizontal plane omnidirectional, while antenna volume smaller, is convenient for carrying.
Description
Technical field
The present invention relates to wireless communications and antenna technical field more particularly to a kind of VHF-UHF wave bands broadband omnidirectional to connect
Receive antenna.
Background technology
The progress of science and technology promotes the broadband of wireless device and miniaturization, front end of the antenna as wireless device
Part, size and bandwidth of operation have important influence to the degree of miniaturization and broadband performance of equipment.On the one hand, the width of equipment
With requirement is changed on wider frequency band, system has stable working performance.For broadband wireless devices, if using narrowband
Antenna transceiving electromagnetic signals, then the need of work of equipment could be met by being necessarily required to install multiple antenna on the same device, and
This will greatly increase the complexity and space hold of equipment, while can also bring electromagnetic interference between different antennae etc.
Problem.On the other hand, the small form factor requirements system of equipment is in the case where ensureing performance, and volume is small as possible, and this requires be
The space hold for various pieces of uniting cannot be excessive.As the important component of wireless device, the volume of antenna can not be excessive.
However blindly the size of reduction antenna can bring antenna gain decline, radiation efficiency reduction and difficulty of matching increase etc. a series of
Problem.
For doublet antenna, when the length of antenna is very small compared with operation wavelength, the input impedance meeting of antenna
Show very high capacitive reactance.For being used to radiate the antenna with reception space electromagnetic wave, excessively high input capacitive reactance is on the one hand
It can cause the input impedance of antenna to become precipitous with the change curve of frequency, increase its Q value and bandwidth of operation is made to narrow；The opposing party
Face will also result in the energy that signal source is fed on antenna be stored near field region radiation do not go out so that the radiation of antenna
Ability declines, and reduces the working performance of antenna.
For wireless applications such as TV, external illuminators-based radars, in order to meet the needs of comprehensive reception electromagnetic signal, it is desirable that
Antenna has omni-directional in azimuth plane, and has certain beam angle in pitching face.Traditional broad-band antenna, such as logarithm
Periodic dipole submatrix, Vivaldi antennas etc., although bandwidth of operation is big, wave beam is single direction, the directional diagram in azimuth plane
Without omni-directional, it is discontented with the needs that feet all direction receives electromagnetic signal.Though the and antennas such as traditional biconical antenna, dipole antenna
So there is the directional diagram of omnidirectional in azimuth plane, but its bandwidth is not wide enough, it is difficult to meet the needs applied in broadband.
Invention content
For it is set forth above the problem of, the object of the present invention is to provide a kind of working band is wide, in small, working band
The broadband isotropic receiving antenna for VHF-UHF wave bands that directional diagram consistency is good, voltage standing wave ratio is low.
In order to achieve the above objectives, the technical scheme is that：
A kind of VHF-UHF wave bands broadband isotropic receiving antenna, first structure and the second knot including setting symmetrical above and below
Structure, the first structure, including the first truncated cone-shaped oscillator, the second conical oscillator and several connecting rods, first round platform
Shape oscillator is connect by connecting rod with the second conical oscillator, and each connecting rod includes long connecting rod, loading electricity successively
Road and short connecting rod, the long connecting rod are connect with the first truncated cone-shaped oscillator, and the short connecting rod connects with the second conical oscillator
It connects；
Second structure, including the second truncated cone-shaped oscillator, the first conical oscillator and several connecting rods, described second
Truncated cone-shaped oscillator is connect by connecting rod with the first conical oscillator, and each connecting rod includes long connecting rod, adds successively
It carries circuit and short connecting rod, the long connecting rod is connect with the second truncated cone-shaped oscillator, the short connecting rod is shaken with the first cone
Son connection；
Wherein, the described first conical oscillator and the second conical oscillator are according to the opposite mode coaxial arrangement of cone；Institute
The distributing point for stating antenna is located at the cone position of the first conical oscillator and the cone position of the second conical oscillator；Described first
Truncated cone-shaped oscillator and the first conical oscillator are located at the same side of distributing point, the described second conical oscillator and the second round platform
Shape oscillator is located at the opposite side of distributing point.
Wherein, the described first conical oscillator and the second conical oscillator do not contact between each other, and intermediate there are gaps；
Gap between described first conical oscillator and the second conical oscillator is 0.4-2mm.
Wherein, the connecting rod of the connecting rod of the first structure and the second structure is divided into two groups up and down, wherein, described first
The connecting rod of structure is one group, and the connecting rod of second structure is another group, the interlaced setting of upper and lower two groups of connecting rods,
In, the number of every group of connecting rod is 3, and 3 connecting rods are with 120 ° for interval, and the central shaft around antenna is in rotational symmetry point
Cloth.
Wherein, the diameter of the long connecting rod and short connecting rod is 6-8mm；The length of the long connecting rod is 80-
84mm, the length of the short connecting rod is 58-64mm.
Wherein, the loaded circuit is composed in parallel by resistance, inductance and capacitance, and the resistance value size of the resistance is 91-100
Ω, the size of the inductance is 20-26nH, and the size of the capacitance is 10-14pF.
Wherein, the cone-apex angle of the described first conical oscillator and the second conical oscillator is 90 ° -106 °, and described first
The angle of the busbar and central shaft of truncated cone-shaped oscillator and the second truncated cone-shaped oscillator is 80 ° -100 °.
Wherein, the cone of the described first conical oscillator and the second conical oscillator is scabbled, and the radius of section circle is 2-
4mm。
Wherein, the bus length of the described first conical oscillator and the second conical oscillator is 50-65mm, and described first
The bus length of truncated cone-shaped oscillator and the second truncated cone-shaped oscillator is 80-90mm.
Wherein, the upper bottom surface radius of the first truncated cone-shaped oscillator and the second truncated cone-shaped oscillator is 45-60mm, bottom surface
Radius is 105-120mm.
Wherein, feed structure is further included, the feed structure includes SMA-K type joints and 1:1 balun, the feed knot
Structure is arranged on the inside cone tip part position of the second conical oscillator or is arranged on the inside cone tip part position of the first conical oscillator.
Compared with traditional technology, the beneficial effects of the invention are as follows：
1st, the present invention has small size, light-weight, transport and advantage easy for installation.
2nd, the present invention has good broadband character, can be real in the broadband of VHF front ends to UHF low frequency ends
Existing good impedance matching, voltage standing wave ratio (Voltage Standing Wave Ratio, VSWR) very low, VSWR of antenna<
2.3 impedance bandwidth is more than four octaves.
3rd, directional diagram of the present invention in working band is stablized, and H faces directional diagram has omni-directional, can be real in azimuth plane
Now the omnidirectional of electromagnetic signal is received, the consistency for working at the same time E faces directional diagram on frequency band also significantly improves.
Description of the drawings
Fig. 1 (a) is a kind of axonometric drawing of VHF-UHF wave bands broadband isotropic receiving antenna provided by the invention.
Fig. 1 (b) is a kind of front view of VHF-UHF wave bands broadband isotropic receiving antenna provided by the invention.
Fig. 1 (c) is a kind of left view of VHF-UHF wave bands broadband isotropic receiving antenna provided by the invention.
Fig. 1 (d) is a kind of vertical view of VHF-UHF wave bands broadband isotropic receiving antenna provided by the invention.
Fig. 2 is a kind of test curve figure of the VSWR of VHF-UHF wave bands broadband isotropic receiving antenna provided by the invention.
Fig. 3 is a kind of side of the VHF-UHF wave bands broadband isotropic receiving antenna provided by the invention at frequency 200MHz
To figure measurement result.
Fig. 4 is a kind of side of the VHF-UHF wave bands broadband isotropic receiving antenna provided by the invention at frequency 400MHz
To figure measurement result.
Fig. 5 is a kind of side of the VHF-UHF wave bands broadband isotropic receiving antenna provided by the invention at frequency 600MHz
To figure measurement result.
Fig. 6 is a kind of side of the VHF-UHF wave bands broadband isotropic receiving antenna provided by the invention at frequency 800MHz
To figure measurement result.
In figure：
1- the first truncated cone-shaped oscillators；2- long connecting rods；3- loaded circuits；The short connecting rods of 4-；The conical oscillators of 5- first；6-
Feed structure；The conical oscillators of 7- second；8- the second truncated cone-shaped oscillators.
Specific embodiment
Understand for the ease of those of ordinary skill in the art and implement the present invention, with reference to the accompanying drawings and embodiments to this hair
It is bright to be described in further detail, it should be understood that embodiment described herein is merely to illustrate and explain the present invention, and is not had to
It is of the invention in limiting.
See Fig. 1 (a)-Fig. 1 (d), the technical solution adopted in the present invention is：A kind of VHF-UHF wave bands broadband omnidirectional
Reception antenna, first structure and the second structure including setting symmetrical above and below, the first structure, including the first truncated cone-shaped oscillator
1st, the second conical oscillator 7 and several connecting rods, the first truncated cone-shaped oscillator 1 pass through connecting rod and the second conical oscillator
7 connections, each connecting rod include long connecting rod 2, loaded circuit 3 and short connecting rod 4 successively, the long connecting rod 2 with
First truncated cone-shaped oscillator 1 connects, and the short connecting rod 4 connect 7 with the second conical oscillator；
Second structure, including the conical oscillator 5 of the second truncated cone-shaped oscillator 8, first and several connecting rods, described the
Two truncated cone-shaped oscillators 8 are connect by connecting rod with the first conical oscillator 5, and each connecting rod includes long connecting rod successively
2nd, loaded circuit 3 and short connecting rod 4, the long connecting rod 2 are connect with the second truncated cone-shaped oscillator 8, the short connecting rod 4 and first
Conical oscillator 5 connects；
Wherein, the described first conical conical oscillator 7 of oscillator 5 and second is according to the opposite mode coaxial arrangement of cone；
The distributing point of the antenna is located at the cone position of the first conical oscillator 5 and the cone position of the second conical oscillator 7；It is described
First truncated cone-shaped oscillator 1 and the first conical oscillator 5 are located at the same side of distributing point, the described second 7 He of conical oscillator
Second truncated cone-shaped oscillator 8 is located at the opposite side of distributing point.
The described first conical conical oscillator 7 of oscillator 5 and second does not contact between each other, and intermediate there are gaps.It is preferred that
Ground, the gap between the first conical conical oscillator 7 of oscillator 5 and second is 0.4-2mm.
The connecting rod of the connecting rod of the first structure and the second structure is divided into two groups up and down, wherein, the first structure
Connecting rod for one group, the connecting rod of second structure is another group, the interlaced setting of upper and lower two groups of connecting rods, wherein,
The number of every group of connecting rod is 3, and with 120 ° for interval, the central shaft around antenna is distributed 3 connecting rods in rotational symmetry.
The diameter of the long connecting rod 2 and short connecting rod 4 is 6-8mm；The length of the long connecting rod 2 is 80-84mm,
The length of the short connecting rod 4 is 58-64mm.
The loaded circuit 3 is composed in parallel by resistance, inductance and capacitance, and the resistance value size of the resistance is 91-100 Ω,
The size of the inductance is 20-26nH, and the size of the capacitance is 10-14pF.
The cone-apex angle of the described first conical conical oscillator 7 of oscillator 5 and second is 90 ° -106 °, first round platform
The busbar of 1 and second truncated cone-shaped oscillator 8 of shape oscillator and the angle of central shaft are 80 ° -100 °.
The cone of the described first conical conical oscillator 7 of oscillator 5 and second is scabbled, and the radius of section circle is 2-4mm.
The bus length of the described first conical conical oscillator 7 of oscillator 5 and second is 50-65mm, first circle
The bus length of platform shape oscillator 1 and the second truncated cone-shaped oscillator 8 is 80-90mm.
The upper bottom surface radius of the first truncated cone-shaped oscillator 1 and the second truncated cone-shaped oscillator 8 is 45-60mm, and bottom surface is partly
Diameter is 105-120mm.
The antenna, further includes feed structure 6, and the feed structure 6 includes SMA-K type joints and 1:1 balun, it is described
Feed structure 6 is arranged on the inside cone tip part position of the second conical oscillator 7 or is arranged on the inner cone of the first conical oscillator 5
Tip position.
See Fig. 2, a kind of voltage standing wave ratio of VHF-UHF wave bands broadband isotropic receiving antenna provided in this embodiment
(Voltage Standing Wave Ratio, VSWR) test result is shown, in the band limits of 200-800MHz, VSWR
Less than 2.3, antenna VSWR<2.3 impedance bandwidth has been more than four octaves, contains the front end of VHF and the low frequency of UHF
End.
See Fig. 3 to Fig. 6, a kind of VHF-UHF wave bands broadband isotropic receiving antenna provided in this embodiment 200MHz,
Pattern measurement result at tetra- frequency points of 400MHz, 600MHz and 800MHz corresponds respectively to Fig. 3, Fig. 4, Fig. 5 and Fig. 6, side
It is shown to the measured result of figure, on working band, the directional diagram in pitching face of the present invention has stable beam angle, orientation
The omni-directional of directional diagram is good in face, meets the needs that omnidirectional in broadband receives electromagnetic signal.
The data of Fig. 2 to Fig. 6 illustrate that the impedance operator of the present invention is excellent, and pattern characteristics are stablized, impedance bandwidth and direction
Image strip is wide to have reached four octaves, and antenna has excellent broadband performance.
Although this specification has more used the first truncated cone-shaped oscillator 1, long connecting rod 2, loaded circuit 3, short connecting rod
4th, the terms such as the first conical oscillator 5, the conical oscillator 7 of feed structure 6, second, second truncated cone-shaped oscillator 8, but be not precluded
Use the possibility of other terms.The use of these items is only for more easily describing the essence of the present invention, they are solved
Any one of the additional limitations is interpreted into all to disagree with spirit of the present invention.
In conclusion the present invention provides a kind of working band is wide, in small, working band directional diagram consistency it is good,
The low broadband isotropic receiving antenna for VHF-UHF wave bands of voltage standing wave ratio.It has the following advantages：
1st, the present invention has small size, light-weight, transport and advantage easy for installation.
2nd, the present invention has good broadband character, can be real in the broadband of VHF front ends to UHF low frequency ends
Existing good impedance matching, voltage standing wave ratio (Voltage Standing Wave Ratio, VSWR) very low, VSWR of antenna<
2.3 impedance bandwidth be more than four octaves.
3rd, directional diagram of the present invention in working band is stablized, and H faces directional diagram has omni-directional, can be real in azimuth plane
Now the omnidirectional of electromagnetic signal is received, the consistency for working at the same time E faces directional diagram on frequency band also significantly improves.
It should be understood that the part that this specification does not elaborate belongs to the prior art.
It should be understood that the above-mentioned description for preferred embodiment is more detailed, can not therefore be considered to this
The limitation of invention patent protection range, those of ordinary skill in the art are not departing from power of the present invention under the enlightenment of the present invention
In the case that profit requires institute's protection domain, replacement or deformation can also be made, is each fallen within protection scope of the present invention, this hair
It is bright range is claimed to be determined by the appended claims.
Claims (9)
1. a kind of VHF-UHF wave bands broadband isotropic receiving antenna, which is characterized in that include the first structure of setting symmetrical above and below
With the second structure, the first structure, including the first truncated cone-shaped oscillator (1), the second conical oscillator (7) and several connections
Bar, the first truncated cone-shaped oscillator (1) connects by connecting rod with the second conical oscillator (7), each the connecting rod according to
It is secondary including long connecting rod (2), loaded circuit (3) and short connecting rod (4), the long connecting rod (2) and the first truncated cone-shaped oscillator (1)
Connection, the short connecting rod (4) connect (7) with the second conical oscillator；
Second structure, including the second truncated cone-shaped oscillator (8), the first conical oscillator (5) and several connecting rods, described the
Two truncated cone-shaped oscillators (8) are connect by connecting rod with the first conical oscillator (5), and each connecting rod includes long connect successively
Extension bar (2), loaded circuit (3) and short connecting rod (4), the long connecting rod (2) connect with the second truncated cone-shaped oscillator (8), described
Short connecting rod (4) connect with the first conical oscillator (5)；
Wherein, the described first conical oscillator (5) and the second conical oscillator (7) are according to the opposite mode coaxial arrangement of cone；
The distributing point of the antenna is located at the cone position of the first conical oscillator (5) and the cone position of the second conical oscillator (7)；
The first truncated cone-shaped oscillator (1) and the first conical oscillator (5) are positioned at the same side of distributing point, second cone
Oscillator (7) and the second truncated cone-shaped oscillator (8) are positioned at the opposite side of distributing point；
The connecting rod of the connecting rod of the first structure and the second structure is divided into two groups up and down, wherein, the company of the first structure
Extension bar is one group, and the connecting rod of second structure is another group, the interlaced setting of upper and lower two groups of connecting rods, wherein, every group
The number of connecting rod is 3, and with 120 ° for interval, the central shaft around antenna is distributed 3 connecting rods in rotational symmetry.
2. a kind of VHF-UHF wave bands broadband isotropic receiving antenna according to claim 1, which is characterized in that described
One conical oscillator (5) and the second conical oscillator (7) do not contact between each other, and intermediate there are gaps；
Gap between described first conical oscillator (5) and the second conical oscillator (7) is 0.4-2mm.
A kind of 3. VHF-UHF wave bands broadband isotropic receiving antenna according to claim 1, which is characterized in that the length
The diameter of connecting rod (2) and short connecting rod (4) is 6-8mm；The length of the long connecting rod (2) be 80-84mm, the short company
The length of extension bar (4) is 58-64mm.
4. a kind of VHF-UHF wave bands broadband isotropic receiving antenna according to claim 1, which is characterized in that described to add
Circuit (3) is carried to be composed in parallel by resistance, inductance and capacitance, the resistance value size of the resistance is 91-100 Ω, the inductance it is big
Small is 20-26nH, and the size of the capacitance is 10-14pF.
5. a kind of VHF-UHF wave bands broadband isotropic receiving antenna according to claim 1, which is characterized in that described
The cone-apex angle of one conical oscillator (5) and the second conical oscillator (7) is 90 ° -106 °, the first truncated cone-shaped oscillator (1)
It it is 80 ° -100 ° with the busbar of the second truncated cone-shaped oscillator (8) and the angle of central shaft.
6. a kind of VHF-UHF wave bands broadband isotropic receiving antenna according to claim 1, which is characterized in that described
The cone of one conical oscillator (5) and the second conical oscillator (7) is scabbled, and the radius of section circle is 2-4mm.
7. a kind of VHF-UHF wave bands broadband isotropic receiving antenna according to claim 1, which is characterized in that described
The bus length of one conical oscillator (5) and the second conical oscillator (7) is 50-65mm, the first truncated cone-shaped oscillator (1)
Bus length with the second truncated cone-shaped oscillator (8) is 80-90mm.
8. a kind of VHF-UHF wave bands broadband isotropic receiving antenna according to claim 1, which is characterized in that described
The upper bottom surface radius of one truncated cone-shaped oscillator (1) and the second truncated cone-shaped oscillator (8) is 45-60mm, and bottom radius surface is 105-
120mm。
9. a kind of VHF-UHF wave bands broadband isotropic receiving antenna according to claim 1, which is characterized in that further include
Feed structure (6), the feed structure (6) include SMA-K type joints and 1:1 balun, the feed structure (6) are arranged on
The inside cone tip part position of two conical oscillators (7) or the inside cone tip part position for being arranged on the first conical oscillator (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510926287.5A CN105552560B (en) | 2015-12-14 | 2015-12-14 | A kind of VHF-UHF wave bands broadband isotropic receiving antenna |
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| CN201510926287.5A CN105552560B (en) | 2015-12-14 | 2015-12-14 | A kind of VHF-UHF wave bands broadband isotropic receiving antenna |
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| CN105552560B true CN105552560B (en) | 2018-06-19 |
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| CN108123225B (en) * | 2017-12-25 | 2020-07-28 | 中国电子科技集团公司第五十四研究所 | Novel two-azimuth coaxial airborne antenna pedestal capable of adding pitching |
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| US11271316B2 (en) * | 2007-06-12 | 2022-03-08 | Thomson Licensing | Omnidirectional volumetric antenna |
| US9077080B1 (en) * | 2012-05-23 | 2015-07-07 | The United States Of America As Represented By The Secretary Of The Navy | Inductively shorted bicone fed tapered dipole antenna |
| CA2842344A1 (en) * | 2014-02-07 | 2015-08-07 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence | Ultra-wideband biconical antenna with excellent gain and impedance matching |
| CN104167596A (en) * | 2014-08-20 | 2014-11-26 | 武汉大学 | Improved biconical antenna for UHF waveband passive radar |
| CN104319456A (en) * | 2014-10-11 | 2015-01-28 | 广东名门锁业有限公司 | Hidden antenna of remote control locks |
| CN204720538U (en) * | 2015-05-05 | 2015-10-21 | 陕西特恩电子科技有限公司 | A kind of UHF/VHF wideband omnidirectional biconical antenna |
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