CN203644947U - Short wave tunable magnetic small ring antenna device - Google Patents
Short wave tunable magnetic small ring antenna device Download PDFInfo
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- CN203644947U CN203644947U CN201320874946.1U CN201320874946U CN203644947U CN 203644947 U CN203644947 U CN 203644947U CN 201320874946 U CN201320874946 U CN 201320874946U CN 203644947 U CN203644947 U CN 203644947U
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- main ring
- antenna
- tuning capacitance
- magnetic small
- coupling loop
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Abstract
The utility model discloses a short wave tunable magnetic small ring antenna device which comprises a main ring (1), a coupling ring (2) and a tuning capacitor (3). The top of the main ring (1) is electrically connected with the tuning capacitor (3). The coupling ring (2) opposite to the tuning capacitor (3) is arranged in the main ring (1). The coupling ring (2) and the main ring (1) are insulated. According to the utility model, a magnetic small antenna resonance technology is used, which realizes the miniaturization and the frequency selection of a short wave antenna; the maximum diameter of the antenna is only 1/10 of the wavelength; and the antenna device has the advantages of small volume, light weight, high Q value and the like, can be used as a transmitting antenna, can be used as a receiving antenna, and is especially suitable for short wave wireless communication with limited volume and weight.
Description
Technical field
The utility model relates to wireless domain miniaturization short-wave antenna, is specially adapted to the limited HF Wireless Communication of volume weight.
Background technology
Traditional short-wave antenna generally adopts electric antenna, and form is half-wave antenna or 1/4 wavelength antennas, and antenna length is operation wavelength 1/2 or 1/4, and size is larger, carries inconvenience, is not easy to install and use; Cannot to realize arrowband tuning for traditional short-wave antenna on the other hand, crowded as easy as rolling off a log being interfered of shortwave frequency range of frequency content, causes signal interruption.
Utility model content
The purpose of this utility model is to avoid the weak point in above-mentioned background technology and the tunable magnetic small loop antenna of shortwave device that a kind of miniaturization is provided, the utility model can be operated in shortwave frequency range, can realize the variation of antenna resonant frequency by tuning capacitance, resonant Q value is in 100～1000 scopes, thereby make this device not only can realize the function of antenna, also possess the characteristic of narrow-band filtering.The full-size of this device is only 1/5～1/2 of traditional antenna, and volume dwindles greatly, not only can portable use, also can vehicle-mountedly use.
The purpose of this utility model is achieved in that the tunable magnetic small loop antenna of a kind of shortwave device, comprises main ring 1, coupling loop 2 and tuning capacitance 3, and wherein main ring 1 is an opening annulus, is fixed with tuning capacitance 3 at opening two ends; In main ring 1, the position relative with tuning capacitance 3 is provided with coupling loop 2, and the inner circle of the cylindrical of coupling loop 2 and main ring 1 is tangent; The opening annulus that coupling loop 2 is made for coaxial cable, one end of its split shed is as the coaxial connectivity port of signal transmission, and the other end of opening is connected the inner wire of coaxial cable with outer conductor.
Wherein, main ring 1, coupling loop 2 and tuning capacitance 3 are all at grade.
Wherein, main ring 1 adopts copper pipe, aluminum pipe or coaxial cable to make.
Wherein, tuning capacitance 3 adopts air tuning capacitance or variable vacuum ceramic electric capacity to make.
Wherein, the diameter of main ring 1 is operation wavelength 1/8～1/12, and the diameter of coupling loop 2 is 1/4～1/6 of main ring 1 diameter.
Wherein, between coupling loop 2 and main ring 1, insulate.
The utility model is compared background technology tool and is had the following advantages:
1. traditional wire antenna is become loop antenna by the utility model, and full-size is only 1/5～1/2 of traditional antenna, and volume dwindles greatly, not only can portable use, also can vehicle-mountedly use.
2. the utility model adopts the mode of series LC resonance to realize the frequency selectivity of antenna, utilize tuning capacitance to realize wideband tunable scope, make this device can realize the function of antenna, also possess the characteristic of narrow-band filtering, can greatly improve the antijamming capability of equipment.
3. the utility model utilizes magnetic miniature antenna technology, and the near field of traditional electrical antenna is become to magnetic field from electric field, due to the closing characteristics of the magnetic line of force, makes the radiation characteristic of this device not be subject to the impact of surrounding environment, has greatly improved the environmental suitability of antenna.
Accompanying drawing explanation
Fig. 1 is composition schematic diagram of the present utility model;
Fig. 2 is equivalent circuit diagram of the present utility model;
Fig. 3 is antenna pattern of the present utility model.
Embodiment
With reference to Fig. 1, the utility model comprises main ring 1, coupling loop 2 and tuning capacitance 3, and wherein main ring 1 is an opening annulus, is fixed with tuning capacitance 3 at opening two ends; In main ring 1, the position relative with tuning capacitance 3 is provided with coupling loop 2, and the inner circle of the cylindrical of coupling loop 2 and main ring 1 is tangent; The opening annulus that coupling loop 2 is made for coaxial cable, one end of its split shed is as the coaxial connectivity port of signal transmission, and the other end of opening is connected the inner wire of coaxial cable with outer conductor.
Tuning capacitance 3 adopts air tuning capacitance or variable vacuum ceramic electric capacity to make.
The diameter of main ring 1 is 1/8～1/12 of operation wavelength, and the diameter of coupling loop 2 is 1/4～1/6 of main ring 1 diameter.
Between coupling loop 2 and main ring 1, insulate.
Fig. 1 is composition schematic diagram of the present utility model, and embodiment presses Fig. 1 and connects.
The effect of the utility model main ring 1 is to be sensed as circular current to outside emittance with by outside radio signal.Main ring 1 can adopt copper pipe, aluminum pipe or coaxial cable to realize, and the Q value of the thicker antenna of diameter of selected materials is higher, and antenna efficiency is higher, and frequency selectivity is stronger.
The effect of the utility model coupling loop 2 is, by coaxial transmission line, coupling loop 2 is carried out to feed, and in the time that the resonance frequency of main ring 1 equals the frequency of coupling loop input signal, coupling loop 2 is by encourage the main ring 1 of outside by inductance coupling high, by main ring 1 emittance.
The effect of the utility model tuning capacitance 3 is that the inductance series connection equivalent with main ring 1 realizes resonance condition, and the capacitance of tuning capacitance will change the size of resonance frequency, thereby realizes the wideband operation scope of antenna.
Manufacture method of the present utility model is that the copper pipe of selecting, aluminum pipe or coaxial cable are coiled into the opening annulus that is of a size of diameter with 1/10 of operating frequency corresponding wavelength as main ring 1, the fixing tuning capacitance 3 at opening two ends, the variable vacuum ceramic electric capacity that the air electric capacity that tuning capacitance 3 can be made up of air dielectric sheet metal or ceramic vacuum material form is realized.Tuning capacitance 3 needs to be closely connected with main ring 1, can adopt the mode of welding to reduce as far as possible contact resistance.Adopt coaxial cable to make coupling loop 2, coaxial cable one end is signaling interface, and one end is coiled into the annulus that a diameter is main ring 1 diameter 1/5 in addition, the heart of coaxial cable is welded on the outer conduction skin of annulus contact point; Coupling loop 2 is put into the position of main ring 1 and tuning capacitance symmetry, coupling loop 2 is tangent with main ring 1 round edge.
The utility model operation principle is as follows: magnetic small loop antenna is a kind of magnetic monopole antenna, has the arrowband resonance characteristic of electric current loop structure.The utility model form is to be made up of two coplanar double-current rings, its equivalent electric circuit as shown in Figure 2, main ring 1 is operated in series LC resonance condition, by tuning capacitance 3, antenna is operated in respective resonant frequency, its inner coupling loop 2 is by transmission line feed, encourage the main ring 1 of outside by inductance coupling high, when in resonance condition, by main ring 1 emittance of outside.
The utility model is homogeneous radiation on plane of a loop, directional diagram is a circle, but in the plane of annulate shaft, directional diagram is 8-shaped. and the shape of radiation field size and ring is irrelevant with to encircle the area surrounding relevant, outer shroud area is larger, the diameter of material is larger, and the radiation resistance of antenna is larger, and emission effciency is higher.Its antenna pattern as shown in Figure 3, can find out, the utility model antenna pattern and half-wave antenna are close.
Claims (6)
1. the tunable magnetic small loop antenna of a shortwave device, comprises main ring (1), coupling loop (2) and tuning capacitance (3), it is characterized in that: wherein main ring (1) is an opening annulus, is fixed with tuning capacitance (3) at opening two ends; In main ring (1), the position relative with tuning capacitance (3) is provided with coupling loop (2), and the inner circle of the cylindrical of coupling loop (2) and main ring (1) is tangent; The opening annulus that coupling loop (2) is made for coaxial cable, one end of its split shed is as the coaxial connectivity port of signal transmission, and the other end of opening is connected the inner wire of coaxial cable with outer conductor.
2. the tunable magnetic small loop antenna of a kind of shortwave according to claim 1 device, is characterized in that: main ring (1), coupling loop (2) and tuning capacitance (3) are all at grade.
3. the tunable magnetic small loop antenna of a kind of shortwave according to claim 1 device, is characterized in that: main ring (1) adopts copper pipe, aluminum pipe or coaxial cable to make.
4. the tunable magnetic small loop antenna of a kind of shortwave according to claim 1 device, is characterized in that: tuning capacitance (3) adopts air tuning capacitance or variable vacuum ceramic electric capacity to make.
5. the tunable magnetic small loop antenna of a kind of shortwave according to claim 1 device, is characterized in that: the diameter of main ring (1) is operation wavelength 1/8～1/12, and the diameter of coupling loop (2) is 1/4～1/6 of main ring (1) diameter.
6. the tunable magnetic small loop antenna of a kind of shortwave according to claim 1 device, is characterized in that: between coupling loop (2) and main ring (1), insulate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320874946.1U CN203644947U (en) | 2013-12-27 | 2013-12-27 | Short wave tunable magnetic small ring antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320874946.1U CN203644947U (en) | 2013-12-27 | 2013-12-27 | Short wave tunable magnetic small ring antenna device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203644947U true CN203644947U (en) | 2014-06-11 |
Family
ID=50876169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320874946.1U Expired - Fee Related CN203644947U (en) | 2013-12-27 | 2013-12-27 | Short wave tunable magnetic small ring antenna device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203644947U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252828A (en) * | 2015-06-12 | 2016-12-21 | 三星电子株式会社 | Near-field communication aerial and there is near field communication means and the mobile system of this antenna |
| CN111276802A (en) * | 2020-02-10 | 2020-06-12 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Fractal reconfigurable vehicle-mounted short wave antenna |
| CN115149256A (en) * | 2022-06-24 | 2022-10-04 | 四川大学 | Miniaturized broadband tunable loop antenna |
-
2013
- 2013-12-27 CN CN201320874946.1U patent/CN203644947U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252828A (en) * | 2015-06-12 | 2016-12-21 | 三星电子株式会社 | Near-field communication aerial and there is near field communication means and the mobile system of this antenna |
| CN111276802A (en) * | 2020-02-10 | 2020-06-12 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Fractal reconfigurable vehicle-mounted short wave antenna |
| CN115149256A (en) * | 2022-06-24 | 2022-10-04 | 四川大学 | Miniaturized broadband tunable loop antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20211227 |