CN204732523U - Miniaturized 360 degree of circumferential antennas - Google Patents
Miniaturized 360 degree of circumferential antennas Download PDFInfo
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- CN204732523U CN204732523U CN201520471149.8U CN201520471149U CN204732523U CN 204732523 U CN204732523 U CN 204732523U CN 201520471149 U CN201520471149 U CN 201520471149U CN 204732523 U CN204732523 U CN 204732523U
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Abstract
The utility model discloses miniaturized 360 degree of circumferential antennas, comprise rosette, the rosette back side is welded with metal monopole cylinder, the axis of metal monopole cylinder crosses the center of circle of rosette, also comprise coaxial line, the coaxial inner conductor outer diameter face of coaxial line arranges screw thread, the aperture surface of metal monopole cylinder is provided with screw thread, coaxial inner conductor is inserted in metal monopole cylinder and carries out threaded engagement connection, also comprise metal floor, conductor through hole over metal floor center, the coaxial outer conductor of coaxial line passes the outer conductor through hole of metal floor, also comprise medium pad, medium pad is arranged between coaxial outer conductor and metal monopole cylinder, coaxial inner conductor runs through medium pad.
Description
Technical field
The utility model relates to antenna technology, specifically refers to miniaturized 360 degree of circumferential antennas.
Background technology
Microwave circumference antenna more application, in one point for multiple address communication, is widely used in military affairs, space flight, remote control, domain of telemetry.In comparatively low-frequency range, microwave circumference antenna mainly contains helical antenna, cross feed electric-type antenna, Waveguide slot antenna; And along with the development of modern communication technology, communication frequency has been inexorable trend to the development of higher wave band, in C-band or higher frequency range, wavelength is very short, above-mentioned antenna, due to complex structure, causes processing charges high, debug difficulties, and feed structure is also difficult to design, makes the bandwidth of antenna narrower; The antenna height of these types all exceedes half-wavelength or quarter-wave simultaneously, the volumetric spaces that antenna height causes too greatly it to take is larger, and Antenna/RCS (RCS) is also comparatively large, also brings considerable influence to the electromagnetism stealth characteristic of all kinds of carrier platform.
Consider above-mentioned situation, be necessary for practical communication platform development a kind of circumferential antenna, i.e. miniaturized circumferential antenna, enable it provide than existing antenna more preferably electromagnetic property.
Utility model content
The purpose of this utility model is to provide a kind of miniaturized 360 degree of circumferential antennas, makes it possess miniaturization, can connect fast and excellent performance parameter.
The purpose of this utility model is achieved through the following technical solutions: miniaturized 360 degree of circumferential antennas, comprise rosette, the rosette back side is welded with metal monopole cylinder, the axis of metal monopole cylinder crosses the center of circle of rosette, also comprise coaxial line, the coaxial inner conductor outer diameter face of coaxial line arranges screw thread, the aperture surface of metal monopole cylinder is provided with screw thread, coaxial inner conductor is inserted in metal monopole cylinder and carries out threaded engagement connection, also comprise metal floor, conductor through hole over metal floor center, the coaxial outer conductor of coaxial line passes the outer conductor through hole of metal floor, also comprise medium pad, medium pad is arranged between coaxial outer conductor and metal monopole cylinder, coaxial inner conductor runs through medium pad.
The utility model is jointly made up of rosette, metal monopole cylinder, medium pad, metal floor and coaxial line (coaxial feed connector).
Metal disc diameter is r
1, thickness h
1, metal monopole drum diameter is footpath r
2, height h
2, their processing is as a whole; Screwed hole is had in the middle part of metal monopole cylinder; Medium pad is the cavity body structure of similar " bottle cap ", and its material adopts polytetrafluoroethylene, and medium pad diameter is r
3, thickness h
3, centre has through hole that coaxial inner conductor is passed through, and its underpart cavity size can make coaxial outer conductor just go deep into its inside; There is through hole that coaxial outer conductor is passed through in the middle of metal floor; Coaxial line is commercially available prod, available is N-type coaxial connector N-50KF-C, its special character is that the inner core stretched out has screw thread, and it can directly be screwed together through the through hole on medium pad and the screwed hole in the middle part of metal monopole cylinder, thus makes whole antenna become as a whole.
In the design, rosette and metal monopole cylinder have been the main parts of radiation effects, for space radiation electromagnetic wave.When transmitting a signal, coaxial line inputs transmitting of external transmitter by the coaxial cable connected, and the energy that coaxial inner conductor exports evokes the surface current on rosette and metal monopole cylinder, thus produces radiation; Because adopted metal monopole drum diameter is comparatively large, make antenna can launch perpendicular polarization electromagnetic wave within the scope of wider bandwidth; Because metal monopole cylinder top termination has entered rosette, this makes the electric current on antenna top non-vanishing, effectively achieves the miniaturization of antenna; Because medium pad is cavity body structure, separate irradiation structure and the metal floor of antenna, make coaxial line can effective active antenna electric current; Rosette, metal monopole cylinder and medium pad structurally all become central shaft symmetrical, and antenna radiation field within the scope of 360 degree, horizontal plane can be made to be uniformly distributed.
The circumferential edge of medium pad extends to form circular cylinder to metal floor direction, and this circular cylinder is coated on the outer wall of coaxial outer conductor.
Metal floor is also provided with floor reinforcement away from the one side of rosette, and coaxial outer conductor runs through floor reinforcement.
The size of rosette determines the resonance frequency of antenna to a great extent, for different metal disc diameter
r 1reflection loss is with the change curve of frequency.Research finds, along with diameter
r 1increase, the resonance frequency of antenna is gradually to low frequency end skew, and similar with general single dipole antenna, radiant body size and antenna frequencies present contrary Changing Pattern.
For different rosette thickness
h 1reflection loss is with the change curve of frequency.Research finds, the thickness of rosette can affect the resonance frequency of antenna equally, and along with the increase of thickness, the resonance frequency of antenna offsets to low frequency end gradually, similar with metal disc diameter, the size of this size presents contrary Changing Pattern with antenna frequencies height.
Metal monopole cylinder is not only the irradiation structure of this antenna, and simultaneously it is also as the coaxial line of transition member connection metal disk and feed-in electric current.For different metal monopole drum diameter
r 2reflection loss is with the change curve of frequency.Research finds, this diameter not only affects resonance point position, also affects the size of reflection loss to a great extent, if this diameter is excessive, then reflection loss is very large, and namely the energy major part of feed antenna is all reflected, and antenna cannot normally be worked; Consider from setting angle, if this diameter is too small, then irradiation structure has no idea to be connected with coaxial inner conductor, so want combine antenna performance and mounting structure in the design of antenna size.
For different metal monopole cylinder heights
h 2reflection loss is with the change curve of frequency.Research finds, the height of metal monopole cylinder can affect the resonance frequency of antenna to a great extent, and along with the increase of height, the resonance frequency of antenna is gradually to low frequency end skew, consistent with the corresponding relation of the sub-size of common monopole and frequency.
Preferably, the diameter of metal monopole cylinder is that the span of r2, r2 is for being less than or equal to 8mm.
Preferably, the height of metal monopole cylinder is that the span of h2, h2 is for being less than or equal to 4mm.
In sum, the beneficial effects of the utility model are: of the present utility modelly itself be highly only about 1/8 of wavelength corresponding to lowest operating frequency; Antenna relative bandwidth is about 45%, can be good in frequency range mate with 50 Ω coaxial cables; The distribution of antenna radiation field in the scope of 360 degree, horizontal plane even omnidirectional, deviation in roundness is less than 2dB; In addition, this antenna structure is flexible, except adopting square metal floor, also can adopt circular metal floor or profiled metal floor within the scope of certain size, and antenna can use as the active dipole of Yagi antenna, effectively reduces the overall dimension of Yagi antenna.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Name in accompanying drawing corresponding to Reference numeral is called: 1, coaxial inner conductor, 2, coaxial outer conductor, 4, floor reinforcement, 5, metal floor, 6, medium pad, 7, metal monopole cylinder, 8, rosette.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment 1:
As shown in Figure 1,
The purpose of this utility model is achieved through the following technical solutions:
Miniaturized 360 degree of circumferential antennas, comprise rosette 8, rosette 8 back side is welded with metal monopole cylinder 7, the axis of metal monopole cylinder 7 crosses the center of circle of rosette, also comprise coaxial line, coaxial inner conductor 1 outer diameter face of coaxial line arranges screw thread, the aperture surface of metal monopole cylinder 7 is provided with screw thread, coaxial inner conductor 1 is inserted in metal monopole cylinder 7 and carries out threaded engagement connection, also comprise metal floor 5, conductor through hole over metal floor 5 center, the coaxial outer conductor 2 of coaxial line passes the outer conductor through hole of metal floor 5, also comprise medium pad 6, medium pad 6 is arranged between coaxial outer conductor 2 and metal monopole cylinder 7, coaxial inner conductor 1 runs through medium pad 6.
The utility model is jointly made up of rosette, metal monopole cylinder, medium pad, metal floor and coaxial line (coaxial feed connector).
Metal disc diameter is r
1, thickness h
1, metal monopole drum diameter is footpath r
2, height h
2, their processing is as a whole; Screwed hole is had in the middle part of metal monopole cylinder; Medium pad is the cavity body structure of similar " bottle cap ", and its material adopts polytetrafluoroethylene, and medium pad diameter is r
3, thickness h
3, centre has through hole that coaxial inner conductor 1 is passed through, and its underpart cavity size can make coaxial outer conductor 2 just go deep into its inside; There is through hole that coaxial outer conductor is passed through in the middle of metal floor; Coaxial line is commercially available prod, available is N-type coaxial connector N-50KF-C, its special character is that the inner core stretched out has screw thread, and it can directly be screwed together through the through hole on medium pad and the screwed hole in the middle part of metal monopole cylinder, thus makes whole antenna become as a whole.
In the design, rosette and metal monopole cylinder have been the main parts of radiation effects, for space radiation electromagnetic wave.When transmitting a signal, coaxial line inputs transmitting of external transmitter by the coaxial cable connected, and the energy that coaxial inner conductor exports evokes the surface current on rosette and metal monopole cylinder, thus produces radiation; Because adopted metal monopole drum diameter is comparatively large, make antenna can launch perpendicular polarization electromagnetic wave within the scope of wider bandwidth; Because metal monopole cylinder top termination has entered rosette, this makes the electric current on antenna top non-vanishing, effectively achieves the miniaturization of antenna; Because medium pad is cavity body structure, separate irradiation structure and the metal floor of antenna, make coaxial line can effective active antenna electric current; Rosette, metal monopole cylinder and medium pad structurally all become central shaft symmetrical, and antenna radiation field within the scope of 360 degree, horizontal plane can be made to be uniformly distributed.
The circumferential edge of medium pad 6 extends to form circular cylinder to metal floor 5 direction, and this circular cylinder is coated on the outer wall of coaxial outer conductor 2.
Metal floor 5 is also provided with floor reinforcement 4 away from the one side of rosette 8, and coaxial outer conductor 2 runs through floor reinforcement 4.
The size of rosette determines the resonance frequency of antenna to a great extent, for different metal disc diameter
r 1reflection loss is with the change curve of frequency.Research finds, along with diameter
r 1increase, the resonance frequency of antenna is gradually to low frequency end skew, and similar with general single dipole antenna, radiant body size and antenna frequencies present contrary Changing Pattern.
For different rosette thickness
h 1reflection loss is with the change curve of frequency.Research finds, the thickness of rosette can affect the resonance frequency of antenna equally, and along with the increase of thickness, the resonance frequency of antenna offsets to low frequency end gradually, similar with metal disc diameter, the size of this size presents contrary Changing Pattern with antenna frequencies height.
Metal monopole cylinder is not only the irradiation structure of this antenna, and simultaneously it is also as the coaxial line of transition member connection metal disk and feed-in electric current.For different metal monopole drum diameter
r 2reflection loss is with the change curve of frequency.Research finds, this diameter not only affects resonance point position, also affects the size of reflection loss to a great extent, if this diameter is excessive, then reflection loss is very large, and namely the energy major part of feed antenna is all reflected, and antenna cannot normally be worked; Consider from setting angle, if this diameter is too small, then irradiation structure has no idea to be connected with coaxial inner conductor, so want combine antenna performance and mounting structure in the design of antenna size.
For different metal monopole cylinder heights
h 2reflection loss is with the change curve of frequency.Research finds, the height of metal monopole cylinder can affect the resonance frequency of antenna to a great extent, and along with the increase of height, the resonance frequency of antenna is gradually to low frequency end skew, consistent with the corresponding relation of the sub-size of common monopole and frequency.
Preferably, the diameter of metal monopole cylinder is that the span of r2, r2 is for being less than or equal to 8mm.
Preferably, the height of metal monopole cylinder is that the span of h2, h2 is for being less than or equal to 4mm.
As mentioned above, then well the utility model can be realized.
Claims (5)
1. miniaturized 360 degree of circumferential antennas, it is characterized in that: comprise rosette (8), rosette (8) back side is welded with metal monopole cylinder (7), the axis of metal monopole cylinder (7) crosses the center of circle of rosette, also comprise coaxial line, coaxial inner conductor (1) outer diameter face of coaxial line arranges screw thread, the aperture surface of metal monopole cylinder (7) is provided with screw thread, coaxial inner conductor (1) is inserted in metal monopole cylinder (7) and carries out threaded engagement connection, also comprise metal floor (5), conductor through hole over metal floor (5) center, the coaxial outer conductor (2) of coaxial line is through the outer conductor through hole of metal floor (5), also comprise medium pad (6), medium pad (6) is arranged between coaxial outer conductor (2) and metal monopole cylinder (7), coaxial inner conductor (1) runs through medium pad (6).
2. miniaturized 360 degree of circumferential antennas according to claim 1, is characterized in that: the circumferential edge of medium pad (6) extends to form circular cylinder to metal floor (5) direction, and this circular cylinder is coated on the outer wall of coaxial outer conductor (2).
3. miniaturized 360 degree of circumferential antennas according to claim 1, is characterized in that: metal floor (5) is also provided with floor reinforcement (4) away from the one side of rosette (8), and coaxial outer conductor (2) runs through floor reinforcement (4).
4. miniaturized 360 degree of circumferential antennas according to claim 1, is characterized in that: the diameter of metal monopole cylinder is that the span of r2, r2 is for being less than or equal to 8mm.
5. miniaturized 360 degree of circumferential antennas according to claim 1, is characterized in that: the height of metal monopole cylinder is that the span of h2, h2 is for being less than or equal to 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520471149.8U CN204732523U (en) | 2015-07-03 | 2015-07-03 | Miniaturized 360 degree of circumferential antennas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520471149.8U CN204732523U (en) | 2015-07-03 | 2015-07-03 | Miniaturized 360 degree of circumferential antennas |
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| Publication Number | Publication Date |
|---|---|
| CN204732523U true CN204732523U (en) | 2015-10-28 |
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| CN201520471149.8U Active CN204732523U (en) | 2015-07-03 | 2015-07-03 | Miniaturized 360 degree of circumferential antennas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104966896A (en) * | 2015-07-03 | 2015-10-07 | 四川莱源科技有限公司 | Miniature 360-degree circumferential antenna |
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2015
- 2015-07-03 CN CN201520471149.8U patent/CN204732523U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104966896A (en) * | 2015-07-03 | 2015-10-07 | 四川莱源科技有限公司 | Miniature 360-degree circumferential antenna |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181122 Address after: 610000 Xinchuang Road, West District, Chengdu High-tech Zone, Sichuan Province Patentee after: Sichuan Di Information Technology Co., Ltd. Address before: 610000 Longtan Industrial Park, two section of Chenghua District East Three Ring Road, Chengdu, Sichuan. Patentee before: SICHUAN LAIYUAN TECHNOLOGY CO., LTD. |