CN108879062A - Low frequency electret body antenna - Google Patents
Low frequency electret body antenna Download PDFInfo
- Publication number
- CN108879062A CN108879062A CN201810721999.7A CN201810721999A CN108879062A CN 108879062 A CN108879062 A CN 108879062A CN 201810721999 A CN201810721999 A CN 201810721999A CN 108879062 A CN108879062 A CN 108879062A
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- China
- Prior art keywords
- low frequency
- electret
- body antenna
- connecting rod
- pieces
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/084—Pivotable antennas
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- 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
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Abstract
The disclosure provides a kind of low frequency electret body antenna, including：Two pieces of organic electret films, insulated connecting rod and the motor being oppositely arranged, organic electret film is for generating electric field, insulated connecting rod is used to fix the relative position of two pieces of organic electret films, motor is for driving insulated connecting rod to rotate, and then two pieces of organic electret film Periodic Rotatings are driven, to surrounding space radiated electromagnetic wave.The low frequency electret body antenna that the disclosure provides drives two pieces of organic electret film Periodic Rotatings using motor, to surrounding space radiated electromagnetic wave, overcome the disadvantage that conventional low frequencies antenna size is huge, transmission power is high, emission effciency is extremely low, have the characteristics that light weight, small in size, low in energy consumption etc., realizes the small light of VLF/ULF antenna.
Description
Technical field
This disclosure relates to SLF/ULF band communication equipment technical field more particularly to a kind of low frequency electret body antenna.
Background technique
Wireless communication (Wireless Communication) can be propagated in free space using electromagnetic wave signal
Characteristic carry out information exchange a kind of communication mode, in recent years in the information communications field, with fastest developing speed, most widely used is exactly
Wireless communication technique.
Loss is very big when frequency electromagnetic waves are propagated in medium, and propagation distance is very short, and ultralow frequency (SLF-Super Low
Frequency) and the electromagnetic wavelength of ultra-low frequency (ULF-Ultra Low Frequency) frequency range is very big, has through-fall, soil
The ability of the mediums such as earth, rock, and the frequency range electromagnetic wave can pass among the earth-ionosphere waveguide that ionosphere and the earth are formed
It broadcasts, therefore there is the ability for realizing long haul communication.Therefore, SLF/ULF frequency range is to latent/through the earth communication, ground communication, underwater mesh
Mark detection, the fields such as the detection of ionosphere performance and Submarine Navigation positioning have huge application prospect.
However, in implementing the present disclosure, present inventor's discovery, due to traditional antenna size palpus and operating wave
Long quite just radiation efficiency with higher, needs transmitter to generate very high transmission power (thousand, MW class), cost is very high
It is expensive.Therefore the factors such as volume, size, weight, power consumption of emission system seriously limit SLF and ULF systematic difference.
Disclosure
(1) technical problems to be solved
Based on above-mentioned technical problem, the disclosure provides a kind of low frequency electret body antenna, big to alleviate traditional antenna volume, weight
Amount weight, the high technical problem of power consumption.
(2) technical solution
The disclosure provides a kind of low frequency electret body antenna, including：Two pieces of organic electret films being oppositely arranged, for producing
Raw electric field；Insulated connecting rod is connect with two pieces of organic electret films respectively, thin for fixing two pieces of organic electrets
The relative position of film；And motor, power output shaft are connect and vertical with the middle part of the insulated connecting rod, it is described for driving
Insulated connecting rod rotation, and then two pieces of organic electret film Periodic Rotatings are driven, to surrounding space radiated electromagnetic wave.
In some embodiments of the present disclosure, the both ends of the insulated connecting rod are respectively arranged with dielectric chamber, described organic
Electret film is arranged in the dielectric chamber；The dielectric chamber includes：The insulation board of two pieces of fitting settings, and two pieces are exhausted
There are the spaces for accommodating the organic electret film between listrium；Wherein, the both ends of the insulated connecting rod are respectively with two
The middle part of insulation board described in a dielectric chamber connects.
In some embodiments of the present disclosure, the junction of the power output shaft of the insulated connecting rod and the motor
It is provided with T-connection.
In some embodiments of the present disclosure, the material of the T-connection is aluminium alloy.
In some embodiments of the present disclosure, the motor is speed regulating motor.
In some embodiments of the present disclosure, the revolving speed of the motor is between 3500RPM between 6500RPM.
In some embodiments of the present disclosure, wherein：The organic electret film is for side length between 3cm between 8cm
Square；The material of the organic electret film is：Polytetrafluoroethylene (PTFE) or polypropylene.
In some embodiments of the present disclosure, the length of the insulated connecting rod between 15cm between 30cm, the insulation
The material of connecting rod is glass reinforced plastic.
In some embodiments of the present disclosure, wherein：The insulation board be side length between 5cm between 15cm, thickness is situated between
In 0.05cm to the cuboid between 0.5cm；The material of the insulation board is polypropylene.
In some embodiments of the present disclosure, the applying frequency range of the low frequency electret body antenna between 50Hz to 1KHz it
Between.
(3) beneficial effect
It can be seen from the above technical proposal that the low frequency electret body antenna that the disclosure provides has the advantages that：
The low frequency electret body antenna that the disclosure provides drives two pieces of organic electret film Periodic Rotatings using motor, to
Surrounding space radiated electromagnetic wave, overcomes that conventional low frequencies antenna size is huge, transmission power is high, emission effciency is extremely low
Disadvantage has the characteristics that light weight, small in size, low in energy consumption etc., realizes the small light of VLF/ULF antenna.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the low frequency electret body antenna that the embodiment of the present disclosure provides.
Fig. 2 is the schematic cross-sectional view of dielectric chamber in low frequency electret body antenna shown in FIG. 1.
Fig. 3 is the schematic diagram for the low frequency electret body antenna that the embodiment of the present disclosure provides.
Fig. 4 is the emulation sectional view for the low frequency electret body antenna surrounding electric field that the embodiment of the present disclosure provides.
Fig. 5 is the two-dimensional surface of low frequency electret antenna electric field modular field distance and angular relationship that the embodiment of the present disclosure provides
Decay pattern.
【Embodiment of the present disclosure main element symbol description in attached drawing】
10- organic electret film；
20- insulated connecting rod；
21- insulation board；
30- motor；
40-T shape connector.
Specific embodiment
In the low frequency electret body antenna that the embodiment of the present disclosure provides, electricity is generated using organic electret film Periodic Rotating
, overcome the disadvantage that conventional low frequencies antenna size is huge, transmission power is high, emission effciency is extremely low, have light weight,
Feature small in size, low in energy consumption etc. realizes the small light of VLF/ULF antenna.
For the purposes, technical schemes and advantages of the disclosure are more clearly understood, below in conjunction with specific embodiment, and reference
The disclosure is further described in attached drawing.
Fig. 1 is the structural schematic diagram for the low frequency electret body antenna that the embodiment of the present disclosure provides.Fig. 2 is low frequency shown in FIG. 1
The schematic cross-sectional view of dielectric chamber in electret body antenna.
The embodiment of the present disclosure provides a kind of low frequency electret body antenna, as shown in Figure 1 to Figure 2, including：Two pieces be oppositely arranged
Organic electret film 10, for generating electric field；Insulated connecting rod 20 connect with two pieces of organic electret films 10 respectively, is used for
Fix the relative position of two pieces of organic electret films 10；And motor 30, the middle part of power output shaft and insulated connecting rod 20
It connects and vertical, for driving insulated connecting rod 20 to rotate, and then two pieces of 10 Periodic Rotatings of organic electret film is driven, to week
Confining space radiated electromagnetic wave.
In some embodiments of the present disclosure, as shown in Fig. 2, the both ends of insulated connecting rod 20 are respectively arranged with dielectric chamber,
Organic electret film 10 is arranged in dielectric chamber；Dielectric chamber includes：The insulation board 21 of two pieces of fitting settings, and two pieces are exhausted
There are the spaces for accommodating organic electret film 10 between listrium 21；Wherein, the both ends of insulated connecting rod 20 respectively with two
The middle part connection of insulation board 21 in dielectric chamber.
Fig. 3 is the schematic diagram for the low frequency electret body antenna that the embodiment of the present disclosure provides.
As shown in figure 3, the dipole moment of the electrostatic dipole of circular motion can be decomposed into two orthogonal time-varying electric dipoles
Dipole moment, the radiation field for moving the available two orthogonal time-varying electric dipoles of radiation field of electric dipole indicates.
It in xoy plane, is rotated around z-axis, is l with initial point distance, rotation angular frequency is ω, electric dipoleIn xoy plane
Rotation, can be equivalent toWithTwo time-varying electric dipoles in directionWithIt is vector superposed, be shown below：
Calculate separately time-varying electric dipoleWithIn the electric field that space generatesWithThen electric dipoleIn space
The electric field of generation is
The low frequency electret body antenna that the embodiment of the present disclosure provides drives two pieces organic electret film 10 weeks using motor 30
Phase property rotation, to surrounding space radiated electromagnetic wave, overcome conventional low frequencies antenna size is huge, transmission power is high, hair
The extremely low disadvantage of efficiency is penetrated, has the characteristics that light weight, small in size, low in energy consumption etc., realizes the small-sized of VLF/ULF antenna
Change.
In some embodiments of the present disclosure, as shown in Figure 1, the connection of the power output shaft of insulated connecting rod 20 and motor 30
Place is provided with T-connection 40, is vertically connected the power output shaft of insulated connecting rod 20 and motor 30 by T-connection 40,
So that it is guaranteed that two panels organic electret film 10 rotates in the same plane.
In some embodiments of the present disclosure, the material of T-connection 40 is aluminium alloy.
In some embodiments of the present disclosure, motor 30 is speed regulating motor, can be adjusted as needed using speed regulating motor
Revolving speed.
In some embodiments of the present disclosure, the revolving speed of motor 30 is between 3500RPM (Revolutions Per
Minute) between 6500RPM.
In some embodiments of the present disclosure, wherein：Organic electret film 10 is for side length between 3cm between 8cm
Square；The material of organic electret film 10 is：Polytetrafluoroethylene (PTFE) or polypropylene.
In some embodiments of the present disclosure, the length of insulated connecting rod 20 between 15cm between 30cm, insulated connecting rod 20
Material be glass reinforced plastic.
In some embodiments of the present disclosure, wherein：Insulation board 21 be side length between 5cm between 15cm, thickness between
0.05cm is to the cuboid between 0.5cm；The material of insulation board 21 is polypropylene.
In some embodiments of the present disclosure, the applying frequency range of the low frequency electret body antenna between 50Hz to 1KHz it
Between.
Fig. 4 is the emulation sectional view for the low frequency electret body antenna surrounding electric field that the embodiment of the present disclosure provides.
Fig. 5 is the two-dimensional surface of low frequency electret antenna electric field modular field distance and angular relationship that the embodiment of the present disclosure provides
Decay pattern.
As shown in fig. 4-5, the low frequency electret body antenna that the embodiment of the present disclosure provides uses two pieces of motor drive is organic to stay
Polar body film Periodic Rotating overcomes that conventional low frequencies antenna size is huge, transmitting function to surrounding space radiated electromagnetic wave
The disadvantage that rate is high, emission effciency is extremely low has the characteristics that light weight, small in size, low in energy consumption etc., realizes VLF/ULF antenna
Small light.
So far, attached drawing is had been combined the embodiment of the present disclosure is described in detail.It should be noted that in attached drawing or saying
In bright book text, the implementation for not being painted or describing is form known to a person of ordinary skill in the art in technical field, and
It is not described in detail.In addition, the above-mentioned definition to each element and method be not limited in mentioning in embodiment it is various specific
Structure, shape or mode, those of ordinary skill in the art simply can be changed or be replaced to it.
According to above description, the low frequency electret body antenna that those skilled in the art should provide the disclosure has clearly
Understanding.
In conclusion the low frequency electret body antenna that the disclosure provides generates electricity using organic electret film Periodic Rotating
, overcome the disadvantage that conventional low frequencies antenna size is huge, transmission power is high, emission effciency is extremely low, have light weight,
Feature small in size, low in energy consumption etc. realizes the small light of VLF/ULF antenna.
It should also be noted that, the direction term mentioned in embodiment, for example, "upper", "lower", "front", "rear", " left side ",
" right side " etc. is only the direction with reference to attached drawing, not is used to limit the protection scope of the disclosure.Through attached drawing, identical element by
Same or similar appended drawing reference indicates.When may cause understanding of this disclosure and cause to obscure, conventional structure will be omitted
Or construction.
And the shape and size of each component do not reflect actual size and ratio in figure, and only illustrate the embodiment of the present disclosure
Content.In addition, in the claims, any reference symbol between parentheses should not be configured to the limit to claim
System.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of each open aspect,
Above in the description of the exemplary embodiment of the disclosure, each feature of the disclosure is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention：It is i.e. required to protect
The disclosure of shield requires features more more than feature expressly recited in each claim.More precisely, such as front
Claims reflect as, open aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim itself
All as the separate embodiments of the disclosure.
Particular embodiments described above has carried out further in detail the purpose of the disclosure, technical scheme and beneficial effects
Describe in detail it is bright, it is all it should be understood that be not limited to the disclosure the foregoing is merely the specific embodiment of the disclosure
Within the spirit and principle of the disclosure, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the disclosure
Within the scope of shield.
Claims (10)
1. a kind of low frequency electret body antenna, including：
Two pieces of organic electret films being oppositely arranged, for generating electric field；
Insulated connecting rod is connect with two pieces of organic electret films respectively, for fixing two pieces of organic electret films
Relative position；And
Motor, power output shaft are connect and vertical with the middle part of the insulated connecting rod, for driving the insulated connecting rod to rotate,
And then two pieces of organic electret film Periodic Rotatings are driven, to surrounding space radiated electromagnetic wave.
2. low frequency electret body antenna according to claim 1, the both ends of the insulated connecting rod are respectively arranged with dielectric chamber,
The organic electret film is arranged in the dielectric chamber；
The dielectric chamber includes：The insulation board of two pieces of fitting settings, and there are described have for accommodating between two pieces of insulation boards
The space of machine electret film；
Wherein, the both ends of the insulated connecting rod are connect with the middle part of insulation board described in two dielectric chambers respectively.
3. the power output of low frequency electret body antenna according to claim 1, the insulated connecting rod and the motor
The junction of axis is provided with T-connection.
4. low frequency electret body antenna according to claim 3, the material of the T-connection is aluminium alloy.
5. low frequency electret body antenna according to claim 1, the motor is speed regulating motor.
6. low frequency electret body antenna according to claim 4, the revolving speed of the motor between 3500RPM to 6500RPM it
Between.
7. low frequency electret body antenna according to claim 1, wherein：
The organic electret film is side length between 3cm to the square between 8cm；
The material of the organic electret film is：Polytetrafluoroethylene (PTFE) or polypropylene.
8. low frequency electret body antenna according to claim 1, the length of the insulated connecting rod between 15cm between 30cm,
The material of the insulated connecting rod is glass reinforced plastic.
9. low frequency electret body antenna according to claim 1, wherein：
The insulation board be side length between 5cm between 15cm, thickness is between 0.05cm to the cuboid between 0.5cm；
The material of the insulation board is polypropylene.
10. low frequency electret body antenna according to any one of claim 1 to 9, the application frequency of the low frequency electret body antenna
Rate range is between 50Hz between 1KHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810721999.7A CN108879062B (en) | 2018-07-03 | 2018-07-03 | Low-frequency electret antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810721999.7A CN108879062B (en) | 2018-07-03 | 2018-07-03 | Low-frequency electret antenna |
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| Publication Number | Publication Date |
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| CN108879062A true CN108879062A (en) | 2018-11-23 |
| CN108879062B CN108879062B (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810721999.7A Active CN108879062B (en) | 2018-07-03 | 2018-07-03 | Low-frequency electret antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098475A (en) * | 2019-05-14 | 2019-08-06 | 北京航空航天大学 | A kind of more valve cylindrical shape Low-Frequency Mechanical antenna mechanisms |
| CN110581355A (en) * | 2019-09-05 | 2019-12-17 | 北京航空航天大学 | Flexible mechanical antenna communication system based on electret |
| CN112993556A (en) * | 2021-02-05 | 2021-06-18 | 北京航空航天大学 | Small low-frequency transmitting-receiving integrated antenna and application |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098475A (en) * | 2019-05-14 | 2019-08-06 | 北京航空航天大学 | A kind of more valve cylindrical shape Low-Frequency Mechanical antenna mechanisms |
| CN110581355A (en) * | 2019-09-05 | 2019-12-17 | 北京航空航天大学 | Flexible mechanical antenna communication system based on electret |
| CN112993556A (en) * | 2021-02-05 | 2021-06-18 | 北京航空航天大学 | Small low-frequency transmitting-receiving integrated antenna and application |
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| Publication number | Publication date |
|---|---|
| CN108879062B (en) | 2020-02-21 |
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Inventor after: Zhang Feng Inventor after: Yu Dongning Inventor after: Ji Yicai Inventor after: Fang Guangyou Inventor before: Yu Dongning Inventor before: Zhang Feng Inventor before: Ji Yicai Inventor before: Fang Guangyou |
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