CN201369390Y - Antenna - Google Patents

Antenna Download PDF

Info

Publication number
CN201369390Y
CN201369390Y CNU2009201056719U CN200920105671U CN201369390Y CN 201369390 Y CN201369390 Y CN 201369390Y CN U2009201056719 U CNU2009201056719 U CN U2009201056719U CN 200920105671 U CN200920105671 U CN 200920105671U CN 201369390 Y CN201369390 Y CN 201369390Y
Authority
CN
China
Prior art keywords
antenna
rotation axis
electrified body
electromagnetic wave
wave
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.)
Expired - Fee Related
Application number
CNU2009201056719U
Other languages
Chinese (zh)
Inventor
刘新进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CNU2009201056719U priority Critical patent/CN201369390Y/en
Application granted granted Critical
Publication of CN201369390Y publication Critical patent/CN201369390Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The utility model provides an antenna for radiating or receiving electromagnetic waves, which comprises a rotary shaft and at least an electrified body, wherein the rotary shaft drives the electrified body to rotate for radiating or receiving electromagnetic wave. The antenna utilizes the rotary shaft to drive the electrified body connected with the rotary shaft to rotate for generating fluctuation electric field with vortex property so that the radiation of electromagnetic wave is realized; the wavelength of radiated electromagnetic wave is ensured not to depend on the length of antenna, so as to facilitate the radiation and application of long waveband electromagnetic wave.

Description

A kind of antenna
Technical field
The utility model relates to the electromagnetic wave correlative technology field, relates in particular to a kind ofly to be used for radiation or to receive electromagnetic antenna.
Background technology
Electromagnetic wave has been widely used in daily life and each professional skill field since finding, by load signal in electromagnetic wave, the remote transmission of process signal modulation back realization signal and control etc., and be widely used in military and fields such as industrial production, as be used for to the communication of diving, to empty communication, to extra large communication, navigation, be used for subsurface investigation, can also be applied in industrial and agricultural production, health care and the life food and drink.
Existing antenna, be by radiation or receive the combination of an electromagnetic conductor or a plurality of conductors, can be divided into wire antenna, surface antenna, horn antenna, lens antenna etc., as is well known to antennas such as long wave, ELF, myriametric wave, long wave, medium wave, shortwave, ultrashort wave, microwaves.In myriametric wave, long wave, medium wave, short-wave band is arrangement by a kind of metal device such as bar, line or line, as emission or receive electromagnetic antenna; In microwave band, be to utilize waveguide that microwave is transported on definite shape and bore, very big or sizable planar antenna with definite shape cross section and bore.Antenna is connected on the power supply, is connected with alternation or pulse current, utilize the variation of the intensity of conduction current to produce the electric field relevant with acceleration, thus the electromagnetic wave of radiation different wave length.Antenna gets final product radiated electromagnetic wave under static relatively state, could be the most effective or the electromagnetic wave of radiation wavelength quite effectively but antenna length must reach 1/2nd or 1/4th length of wavelength, if the thousands of kilometer of electromagnetic wavelength, the length of antenna should be hundreds and thousands of kilometers, about ten kilometers of length at least.For example, the long-wave antenna to the long wave radio station of the communication of diving takes up an area of tens kilometers, about ten kilometers of the long-wave antenna length of airborne long wave radio station; The length that is fixed on the anti-stealth shortwave phased array radar (over-the-horizon radar) that uses on ground is about km.
As seen, the defective of prior art is: utilize the variation of conduction current intensity in the conductor to come the electromagnetic wave of radiation different wave length, make that the electromagnetic wavelength of antenna institute radiation is relevant with the length of antenna, be not easy to the long-wave band irradiation of electromagnetic waves.
The utility model content
The utility model provides a kind of antenna, the electromagnetic wave of radiation long-wave band very easily.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of antenna, comprise rotation axis and at least one electrified body that is connected on the described rotation axis, and described rotation axis drives described electrified body and rotates, with radiation or reception electromagnetic wave.
Further, described antenna also comprises at least two insulators of fixedlying connected with described rotation axis, and described electrified body is fixed between any two described insulators.
Further, described insulator is the insulation disk.
Further, described electrified body is a strip permanent magnet.
Further, described antenna also comprises the brush that is electrically connected with described electrified body, and described brush also is electrically connected with power supply.
Further, described electrified body is plane-parallel capacitor or bar shaped soft magnetic bodies.
Further, described electrified body is a straight solenoid, and described straight solenoid is wrapped on the insulating support, and described insulating support is fixed between described any two insulators.
Further, described antenna also comprises the refrigeration part that is connected with described electrified body, to reduce the temperature of described electrified body.
Compared with prior art, the beneficial effects of the utility model are:
The electrified body rotation that is connected on the rotation axis by utilizing rotation axis to drive, generation has the fluctuation electric field of vortex character, thereby radiated electromagnetic wave makes the wavelength of radiated electromagnetic wave be no longer dependent on the length of antenna, is convenient to the electromagnetic application of long-wave band irradiation of electromagnetic waves and long-wave band.
Description of drawings
Fig. 1 is the structural representation of the embodiment one of the utility model antenna;
Fig. 2 is the structural representation of the embodiment two of the utility model antenna;
Fig. 3 is a kind of structural representation that comprises the antenna embodiment of many group rotating partss of the utility model;
Fig. 4 is the structural representation of the embodiment three of the utility model antenna.
Embodiment
In order to make those skilled in the art can further understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, accompanying drawing only provide with reference to and explanation, be not to be used for limiting the utility model.
Below in conjunction with drawings and Examples, the technical solution of the utility model is described.
With reference to Fig. 1, be the structural representation of the embodiment one of the utility model antenna.
This antenna comprises rotation axis 101 and the strip permanent magnet with sector crosssection 102 that is fixed on the rotation axis.This permanent magnet 102 can directly be fixed on the rotation axis 101, also can be fixed on the rotation axis 101 by two insulators, insulator is insulation disk 103 in the present embodiment, it is the inboard that permanent magnet 102 is fixed on two insulation disks 103, the outside of two insulation disks 103 is connected with rotation axis 101, or two insulation disks 103 wear and are fixed on the rotation axis 101.Adopt better fixed permanent magnet 102 of insulation disk 103, but also can on insulation disk 103, delimit the position in advance, add as required or dismounting permanent magnet 102, be more convenient on the rotation axis 101 using flexibly than directly permanent magnet 102 being fixed on.
Permanent magnet 102 can have a plurality of, and to be fixed with 102, two permanent magnets 102 of two permanent magnets opposite about the magnetic directions that rotation axis 101 symmetries and two permanent magnets 102 produce two insulation disk 103 inboards in the present embodiment.Equally, can be with insulate disk 103 and inboard two fixing permanent magnets 102 as one group of rotating parts, entire antenna can comprise the above-mentioned rotating partss of many groups.Outermost two insulation disks 103 are fixedlyed connected with rotation axis 101.
In the present embodiment, the radius of rotation axis 101 is elected 0.1 meter as, adopts insulation engineering plastics or the high material of resistivity to make; Permanent magnet 102 is that the cross section is fan-shaped bar shaped column permanent magnet, and the radius of this sector crosssection is 0.2 meter, and fan-shaped angle is 90 degree, and the length of permanent magnet is 2 meters, and magnetic field intensity is elected 0.5 spy as, adopts the high permanent magnetic material of resistivity, as ferrite permanent-magnet materials; Insulation disk 103 can select for use the engineering plastics of 0.4 meter of radius, 0.3 meter of thickness to make.
When the work of this antenna, rotation axis 101 drives insulation disks 103 and permanent magnet 102 with certain rotational speed, thereby makes the Ampere currents break-in variable motions in the permanent magnet 102 produce the fluctuation electric field, and space radiation towards periphery goes out electromagnetic wave; Wave frequency depends on the rotating speed of permanent magnet 102.
This fluctuation electric field is the electromotive field with vortex character that is produced when doing variable motion by the Ampere currents in the permanent magnet, and the electromotive field of this fluctuation electric field acceleration strong and moving charge is proportional:
E → a = μ · Q 4 πR a →
In the formula, Ea is that electromotive field is strong, and Q is the quantity of electric charge, and a is the acceleration of moving charge, and R is the distance to moving charge.
Therefore, present embodiment utilizes the periodicity variable motion of electric charge in the Ampere currents to produce the fluctuation electric field at a distance at distance moving charge R rice, thereby generates electromagnetic waves.
Change if the rotating speed of this antenna rotary shaft 101 is elected per second 20 as, then the electromagnetic wavelength of radiation can reach 1.5 ten thousand kilometers.Wherein, the size of permanent magnet 102 and material, and the rotating speed of rotation axis 101 etc. can be adjusted as required.
This shows, thereby the break-in variable motion by Ampere currents in the permanent magnet 102 produces the fluctuation electric field, space radiation towards periphery goes out electromagnetic wave, thereby the electromagnetic wavelength of this antenna institute radiation and the length of this antenna are had nothing to do, adopt the limited size of this antenna, can realize the long-wave band irradiation of electromagnetic waves very easily by adjusting rotating speed, also save the floor space of antenna greatly, expand the kind and the practicality of antenna.
With reference to Fig. 2, be the structural representation of the embodiment two of the utility model antenna.
This antenna comprises rotation axis 201, insulating support 202, straight solenoid 203 and brush 204.Straight solenoid 203 is wrapped on the insulating support 202, insulating support 202 can directly be fixedlyed connected with rotation axis 201, also can be fixed on the rotation axis 201 by insulation disk 205, be the inboard that insulating support 202 is fixed on two insulation disks 205, the outside of two insulation disks 205 is connected with rotation axis 201 or insulation disk 205 wears and is fixed on the rotation axis 201.Adopt insulation disk 205 better fixed insulation support 202 and straight solenoid 203, also can on insulation disk 205, delimit the position in advance, add as required or dismounting insulating support 202.Brush 204 and straight solenoid 203 are electrically connected by lead, and brush 204 also is electrically connected with power supply by lead, and brush can be fixed on the rotation axis 201.
Permanent magnet shape in the present embodiment among the shape of insulating support 202 and the embodiment one is similar, be fan-shaped bar shaped column structure also for the cross section, insulating support 202 also can have a plurality of, be fixed with two insulating supports 202 two insulation disk 205 inboards in the present embodiment, two insulating supports 202 are about rotation axis 201 symmetries, equally, also can and be wrapped in straight solenoid 203 on the insulating support 202 with insulation disk 205 and inboard fixing two insulating supports 202 as one group of rotating parts, entire antenna can comprise the above-mentioned rotating parts of many groups, as shown in Figure 3, outermost two insulation disks 205 are fixedlyed connected with rotation axis 201, adopt 8 groups of above-mentioned parts in the present embodiment.All be wound with straight solenoid 203 on the above-mentioned insulating support 202, each straight solenoid 203 all is electrically connected with power supply by brush 204, also is that each straight solenoid 203 is fan-shaped closed-loop path.
In the present embodiment, the radius of rotation axis 201 still is chosen as 0.1 meter, and rotation axis adopts insulation engineering plastics or the high material of resistivity to make; Insulation disk 205 can select for use the engineering plastics of 0.4 meter of radius, 0.3 meter of thickness to make; The radius of insulating support 202 sector crosssections is 0.2 meter, and fan-shaped angle is 90 degree, and the length of insulating support 202 is 1 meter, and the fan-shaped radius that also is the fan-shaped closed-loop path of each straight solenoid 203 coiled is 0.2 meter, and fan-shaped angle is 90 degree.
When rotation axis 201 drives insulation disk 205 and insulating support 202 rotations, also rotate thereupon the fan-shaped closed-loop path that straight solenoid 203 forms, the positive and negative conduct charges that is comprised in the lead of the straight solenoid 203 of fan-shaped circular arc portion is with respect to the linear velocity stack of the movement velocity and the mechanical rotation of lead, the centripetal acceleration difference that positive and negative conduct charges in the lead of circular arc portion is produced separately produces the electromotive field relevant with centripetal acceleration; Because of the periodic rotary cyclic variation with fan-shaped closed-loop path of the direction of the electromotive field that produced, thereby produce the fluctuation electric field, spatial emission goes out electromagnetic wave towards periphery; Wave frequency also is a wavelength, depends on the frequency of power supply and the rotating speed of symmetrical fan-shaped closed-loop path etc.
Calculate with following formula apart from the straight solenoid R rice electric field strength that fluctuates at a distance:
E a = 2 μ · n · L · I R
In the formula, the number of turns that on behalf of rotation axis 201 per seconds, n rotate, L represents each fan-shaped arc length, and I represents the current strength of closed-loop path; Wherein, fluctuation electric field strength direction is identical with the direction of the centripetal acceleration of positive charge generation.
If electing per second 20 as, changes the rotating speed of the rotation axis 201 of this antenna, driving on 8 groups of rotating partss 16 straight solenoids 203 on the insulating support 202 rotates, straight solenoid 203 employing diameters are 2 millimeters high temperature enamel insulated aluminium wire, on each insulating support 202, adopt parallel close side by side around mode around 100,000 circles, power supply is elected training～100 Wan An training of 50 Wan An by brush 204 as for the electric current overall strength of each straight solenoid, the frequency of power supply is elected 0 hertz (DC power supply) as, power source voltage is elected 0 volt～10,000 volts as, then this EFFECTIVE RANGE that comprises the antenna institute radiated electromagnetic wave of 8 groups of rotating partss is: 1000 km place electric field strength can reach pact ± 25 microvolt/rice, and 10,000 km place electric field strength are ± 2.5 microvolt/rice approximately; If select 10 this antenna run-in synchronisms for use, 10,000 km place electric field strength can reach ± 25 microvolt/rice.It thus can radiation wavelength be 1.5 ten thousand kilometers electromagnetic wave.If need to strengthen EFFECTIVE RANGE and strengthen electric field strength, can strengthen the diameter of straight solenoid 203.
If straight solenoid 203 adopts superconducting wire, the electric current overall strength of above-mentioned each straight solenoid can be elected as training～1000 Wan An training of 500 Wan An, it is 0.5 millimeter superconducting line that straight solenoid 203 adopts diameters, on each insulating support 202, adopt parallel close side by side around mode around 60,000 circles; Then the EFFECTIVE RANGE of this antenna institute radiated electromagnetic wave can increase about 10 times than above-mentioned conventional conductor.
Certainly, the rotating speed of the frequency of the radius of straight solenoid 203 leads and used material, power supply and current strength, rotation axis 201 all can be adjusted as required, and the electric connection mode of power supply and straight solenoid also can adopt other modes.
Relative motion and variable motion by conduction current in straight solenoid 203 and the straight solenoid come radiated electromagnetic wave, and the electromagnetic wavelength of institute's radiation and the length of antenna are had nothing to do, and can realize the long-wave band irradiation of electromagnetic waves as long as change relevant parameter.
Insulating support 202 in the present embodiment and the straight solenoid 203 that is wrapped on the insulating support 202 can replace with the bar shaped column soft magnetic bodies with sector crosssection, this soft magnetic bodies is electrically connected with power supply by brush, provide exciting current by power supply for this soft magnetic bodies, thereby driving this soft magnetic bodies when rotation axis rotates rotates, thereby produce the fluctuation electric field, radiated electromagnetic wave.
Owing to be connected with higher electric current in straight solenoid 203 or the soft magnetic bodies, work long hours and to produce big heat, easily produce the useful life of fault or minimizing lead, so it is preferred, can also comprise refrigeration part in the present embodiment, this refrigeration part can be fixed on the rotation axis, also can be connected on electrified body or the insulating support, can select for use modes such as spraying water-cooled, air blast cooling or cooled with liquid nitrogen to lower the temperature, not exceed the temperature that to bear during with maintenance straight solenoid winding or soft magnetic bodies work.
With reference to Fig. 4, be the structural representation of the embodiment three of the utility model antenna.
This antenna comprises rotation axis 401, plane-parallel capacitor 402 and brush 403.Two battery lead plates of plane-parallel capacitor 402 can be set on the rotation axis 401, also can be separately fixed on the insulator by two battery lead plates, are fixedly connected on this rotation axis 401 by insulator.Two battery lead plates of plane-parallel capacitor 402 are connected respectively on the brush 403, and are connected to power supply by brush 403, and brush can be fixed on the rotation axis 401.This antenna also can also comprise refrigeration part, can select for use modes such as spraying water-cooled, air blast cooling or cooled with liquid nitrogen to lower the temperature, and does not exceed the temperature that can bear with keeping parallelism plate capacitor and lead.
Certainly, similar with previous embodiment, the plane-parallel capacitor 402 in this antenna also can have many groups.When this antenna was worked, rotation axis 401 drove this plane-parallel capacitor 402 with certain rotating speed and rotates, and makes the electric charge between the plane-parallel capacitor battery lead plate do the break-in variable motion, thereby produces fluctuation electric field, radiated electromagnetic wave.
The utility model antenna can be used for radiated electromagnetic wave, also can be used to receive electromagnetic wave, and when receiving vertically polarized wave or circularly polarised wave, rotation axis drives electrified body and rotates in the same way synchronously, can be anti-interference, strengthen the reliability and the confidentiality of electromagnetic wave signal.Certainly the electromagnetic wave for the utility model aerial radiation also can receive with long reception antenna, perhaps adopt the excellent magnetic reception antenna of soft magnetism, or is arranged in receiving antenna array with the soft magnetism rod and receives electromagnetic wave.
More than the shape of permanent magnet, soft magnetic bodies, insulating support, insulator etc. and non-limiting among each embodiment, can adjust as required, shape as permanent magnet, soft magnetic bodies, insulating support adopts cuboid, the shape of insulator adopts oval plate etc., and each rotating speed, number and size value also can be adjusted as required.The fixedly connected rectangle fixed leg that can adopt between each part is fixed.
Above-described the utility model execution mode does not constitute the qualification to the utility model protection range.Any modification of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the claim protection range of the present utility model.

Claims (8)

1, a kind of antenna is characterized in that, comprises rotation axis and at least one electrified body that is connected on the described rotation axis, and described rotation axis drives described electrified body and rotates, with radiation or reception electromagnetic wave.
2, antenna according to claim 1 is characterized in that, described antenna also comprises at least two insulators of fixedlying connected with described rotation axis, and described electrified body is fixed between any two described insulators.
3, antenna according to claim 2 is characterized in that, described insulator is the insulation disk.
4, according to any described antenna in the claim 1 to 3, it is characterized in that described electrified body is a strip permanent magnet.
5, according to any described antenna in the claim 1 to 3, it is characterized in that described antenna also comprises the brush that is electrically connected with described electrified body, described brush also is electrically connected with power supply.
6, antenna according to claim 5 is characterized in that, described electrified body is plane-parallel capacitor or bar shaped soft magnetic bodies.
7, antenna according to claim 5 is characterized in that, described electrified body is a straight solenoid, and described straight solenoid is wrapped on the insulating support, and described insulating support is fixed between described any two insulators.
8, antenna according to claim 5 is characterized in that, described antenna also comprises the refrigeration part that is connected with described electrified body, to reduce the temperature of described electrified body.
CNU2009201056719U 2009-02-09 2009-02-09 Antenna Expired - Fee Related CN201369390Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2009201056719U CN201369390Y (en) 2009-02-09 2009-02-09 Antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2009201056719U CN201369390Y (en) 2009-02-09 2009-02-09 Antenna

Publications (1)

Publication Number Publication Date
CN201369390Y true CN201369390Y (en) 2009-12-23

Family

ID=41488281

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2009201056719U Expired - Fee Related CN201369390Y (en) 2009-02-09 2009-02-09 Antenna

Country Status (1)

Country Link
CN (1) CN201369390Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103949000A (en) * 2014-03-27 2014-07-30 深圳青稜电塑有限公司 Sleep-assisting device
CN108346851A (en) * 2017-12-26 2018-07-31 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） A kind of low-frequency antenna
CN108717995A (en) * 2018-04-19 2018-10-30 东南大学 A kind of microminiature ULF/VLF rotation charge antenna and signal amplitude-frequency modulator approach
CN108736146A (en) * 2018-04-19 2018-11-02 东南大学 A kind of microminiature ULF/VLF rotatory currents antenna and signal amplitude-frequency modulator approach
US11145971B1 (en) 2019-09-13 2021-10-12 Rockwell Collins, Inc. Poynting vector synthesis via coaxially rotating electric and magnetic dipoles
CN113825307A (en) * 2021-09-27 2021-12-21 中芯(深圳)精密电路科技有限公司 Multilayer PCB magnetic antenna

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103949000A (en) * 2014-03-27 2014-07-30 深圳青稜电塑有限公司 Sleep-assisting device
CN108346851A (en) * 2017-12-26 2018-07-31 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） A kind of low-frequency antenna
CN108346851B (en) * 2017-12-26 2020-04-21 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） Low-frequency antenna
CN108717995A (en) * 2018-04-19 2018-10-30 东南大学 A kind of microminiature ULF/VLF rotation charge antenna and signal amplitude-frequency modulator approach
CN108736146A (en) * 2018-04-19 2018-11-02 东南大学 A kind of microminiature ULF/VLF rotatory currents antenna and signal amplitude-frequency modulator approach
CN108736146B (en) * 2018-04-19 2020-07-31 东南大学 Ultra-small U L F/V L F rotating current antenna and signal amplitude-frequency modulation method
US11145971B1 (en) 2019-09-13 2021-10-12 Rockwell Collins, Inc. Poynting vector synthesis via coaxially rotating electric and magnetic dipoles
CN113825307A (en) * 2021-09-27 2021-12-21 中芯(深圳)精密电路科技有限公司 Multilayer PCB magnetic antenna
CN113825307B (en) * 2021-09-27 2023-02-03 中芯(深圳)精密电路科技有限公司 Multilayer PCB magnetic antenna

Similar Documents

Publication Publication Date Title
CN201369390Y (en) Antenna
CN204394509U (en) MR imaging apparatus and antenna assembly
Fawole et al. An electromechanically modulated permanent magnet antenna for wireless communication in harsh electromagnetic environments
US8963380B2 (en) System and method for power generation system
US8638016B2 (en) Electromagnetic structure having a core element that extends magnetic coupling around opposing surfaces of a circular magnetic structure
US10153555B1 (en) Systems and methods for switched reluctance magnetic mechtenna
CN101361156A (en) Charged particle radiation therapy
US20090140529A1 (en) Enhanced internal electrical generators
CN109690926A (en) Axial magnetic flux generator
Han et al. The ultra-compact ELF magneto-mechanical transmission antenna with the speed modulated EM signal based on three-phase induction motor
CN106026410B (en) A kind of wireless electric energy transmission device
CN209200131U (en) Antenna holder, radio-frequency antenna component and fusion device
CN203813469U (en) Wireless charging device used for charging in batch and wireless charging coil thereof
CN105656212B (en) Contactless charging equipment based on rotating excitation field and charging method
KR20140036238A (en) Low speed electromagnetic turbine
CN107276249A (en) A kind of magnet coupled resonant type wireless electric energy transmits bowl-shape primary coil
Strachen et al. Mechanical super-low frequency (SLF) transmitter using electrically-modulated reluctance
US20150207232A1 (en) High efficiency polarized ulf/vlf/rf transciever antenna
US4841217A (en) Pulsed generator incorporating output waveform flexibility and a pulsed transformer
CN205453306U (en) Non -contact battery charging outfit based on rotating field
US4741418A (en) Electromagnetic energization system with non-coiled, single wire conductor
US3118076A (en) Magneto-electric system to maintain the oscillations of a balance wheel in a clock-work
US11145971B1 (en) Poynting vector synthesis via coaxially rotating electric and magnetic dipoles
CN112711185A (en) Watch antimagnetic performance detector
US10693524B2 (en) System and method for mechanically-based magnetic-field transmitter

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20091223

Termination date: 20110209