CN207426171U - A kind of closely radiator - Google Patents
A kind of closely radiator Download PDFInfo
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- CN207426171U CN207426171U CN201721666137.6U CN201721666137U CN207426171U CN 207426171 U CN207426171 U CN 207426171U CN 201721666137 U CN201721666137 U CN 201721666137U CN 207426171 U CN207426171 U CN 207426171U
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- oscillator
- coil
- access interface
- closely
- signal
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Abstract
The utility model discloses a kind of closely radiator, the access interface including being used for signal access；The capacitance being connected between access interface and ground；The coil being connected in parallel on capacitance；It is connected to the oscillator of access interface.The oscillator of device and coil realize near field distribution to the signal of cable via radiation, can not only realize the far band radiation of two frequency intervals, simple in structure, small, and radiation length, up to 1 meter, satisfaction acts the experiment demand in the fields such as extraction.
Description
Technical field
The utility model is related to radiator fields, and in particular to a kind of closely radiator.
Background technology
Closely electromagnetic field radiation problem is different from traditional antenna, and energy of electromagnetic field concentrates on Fei Lieer
Area is not that most of far field that is radiated forms directional diagram.Closely the application of electromagnetic field is mostly focused on wireless charging and near
Field communication NFC fields, the operating distance of the two are both less than 10CM.The radiator coil number of turn of wireless charging is very close, power capacity
Very big, volume is also larger, and about 10Cm left and right areas, due to needing the brass material of high-quality, cost is also higher；Near-field communication
Radiator very little, operating distance also very little, the work being suitable only in the case of fitting.
It needs to reach 1 meter in operating distance, relatively small to volume requirement in 1-2cm and there is in a radiator difference
The field of band radiation component, the above-mentioned technology of radiator and device for for example acting extraction field are not suitable for.
Utility model content
In order to solve the above-mentioned technical problem the utility model provides a kind of closely radiator.
The utility model is achieved through the following technical solutions：
A kind of closely radiator, including：
For the access interface of signal access；
The capacitance being connected between access interface and ground；
The coil being connected in parallel on capacitance；
It is connected to the oscillator of access interface.
In the present solution, access interface connecting cable, signal is respectively fed into from cable feed-in, electromagnetic wave through energy by capacitance
Coiler part circuit and oscillator part.The signal of rather low-frequency rate mainly radiates the field distribution to be formed closely from coil, relatively
High-frequency signal mainly radiates the field distribution to be formed closely from subcircuit.Background radiation device is by the guided electromagnetic wave in cable
Be changed into closely like steady field magnetic distribution, can simultaneously feed-in low frequency signal and high-frequency signal, realize two frequency intervals very
Remote band radiation component.Conversely, coil and oscillator the like steady field of surrounding can be converted into induced electricity stream enter cable formation connect
The collection of letters number.Using foregoing circuit structure, circuit structure is simple, and relative volume is small, while provides enough swept areas again and reach
To enough operating distance, radiation length has filled up the blank of Wireless charging coil and NFC antenna up to 1 meter.
Preferably, it is connected with resistance between the oscillator and access interface.
Further, the resistance is adjustable resistance.Resistance is series relationship with oscillator, adjustable by adjusting resistance values
Signal strength is saved, adjusts radiation length, resistance is arranged to adjustable resistance convenient for the adjusting to radiation length.
Preferably, in order to reduce circuit volume, the coil is printed circuit.
Preferably, the coil is circular, square.
Preferably, the oscillator is into square-wave form.
The utility model compared with prior art, has the following advantages and advantages：
1st, the signal of the utility model cable realizes near field distribution through oscillator and coil, can not only realize between two frequencies
So far apart band radiation, it is simple in structure, it is small, and radiation length, up to 1 meter, satisfaction acts the experiment need in the fields such as extraction
It asks.
Description of the drawings
Attached drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the application
Part does not form the restriction to the utility model embodiment.
Fig. 1 is the circuit diagram of this programme.
Reference numeral is entitled in figure：
1st, access interface, 2, oscillator.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment 1
A kind of closely radiator as shown in Figure 1, including access interface 1, capacitance C, coil L, oscillator 2, access interface 1
With cable connection, to access signal；Capacitance C is connected between access interface 1 and ground；Coil L is connected in parallel on capacitance, and signal is through electricity
After cable access, the signal of rather low-frequency rate radiates the field distribution to be formed closely from coil in electromagnetic wave；Oscillator 2 is connected to access
On port 1, signal is after cable accesses, and the signal of relative high frequency radiates the field point to be formed closely from oscillator in electromagnetic wave
Cloth.Another port can be also set, be used to implement the connection of above-mentioned capacitance and ground, ground connection can be realized by connecting grounding shell.
Embodiment 2
Principle based on above-described embodiment, the present embodiment are excellent to above-described embodiment progress, i.e., in access interface 1 and oscillator 2
Between connect a resistance R, which uses adjustable resistance, passes through adjustable resistance adjusting signal intensity.
Using the radiator of the structure, coil can be used printed circuit, coil can be made as circular, square, diamond shape or its
His shape is, it is necessary to explanation, using the coil of other shapes also in the protection domain of this programme.
Polymorphic structure can be used in oscillator, as shown in Figure 1, square-wave form can be used.It should be noted that using other shapes
Equal length oscillator also in the protection domain of this programme.
Low cost can be used by said structure, the guided electromagnetic wave in cable is changed into closely quasi-static by small size
Like steady field around radiator is converted into induced electricity stream and enters cable and formed and receives signal by magnetic distribution.The radiator
It is used to be formed the directional diagram of a far-field distribution different from conventional antenna.By the structure of coil and oscillator, while allow two
The far working frequency work of a frequency interval, coverage reach within 1 meter.It, should by appropriate frequency and matched design
Radiator causes the electric field that the bifrequency electric signal of feed-in generates to be formed about specific distribution gradient in antenna, specific to adapt to
Application, for example act extraction field, applied to dress ornament and gloves for human action capture, certainly, can also be applied to it
He has the field of equally applicable demand.
Above-described specific embodiment, the purpose of this utility model, technical solution and advantageous effect have been carried out into
One step is described in detail, it should be understood that the foregoing is merely specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of closely radiator, which is characterized in that including：
For the access interface of signal access；
The capacitance being connected between access interface and ground；
The coil being connected in parallel on capacitance；
It is connected to the oscillator of access interface.
2. a kind of closely radiator according to claim 1, which is characterized in that connect between the oscillator and access interface
It is connected to resistance.
3. a kind of closely radiator according to claim 2, which is characterized in that the resistance is adjustable resistance.
4. a kind of closely radiator according to claim 1, which is characterized in that the coil is printed circuit.
5. a kind of closely radiator according to claim 1, which is characterized in that the coil is circular, square.
6. a kind of closely radiator according to claim 1, which is characterized in that the oscillator is into square-wave form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721666137.6U CN207426171U (en) | 2017-12-04 | 2017-12-04 | A kind of closely radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721666137.6U CN207426171U (en) | 2017-12-04 | 2017-12-04 | A kind of closely radiator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207426171U true CN207426171U (en) | 2018-05-29 |
Family
ID=62396893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721666137.6U Active CN207426171U (en) | 2017-12-04 | 2017-12-04 | A kind of closely radiator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207426171U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107819207A (en) * | 2017-12-04 | 2018-03-20 | 成都思悟革科技有限公司 | A kind of closely radiator |
-
2017
- 2017-12-04 CN CN201721666137.6U patent/CN207426171U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107819207A (en) * | 2017-12-04 | 2018-03-20 | 成都思悟革科技有限公司 | A kind of closely radiator |
| CN107819207B (en) * | 2017-12-04 | 2024-05-28 | 成都思悟革科技有限公司 | Short-distance radiator |
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