CN207504165U - A kind of circular polarisation probe antenna structure - Google Patents
A kind of circular polarisation probe antenna structure Download PDFInfo
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- CN207504165U CN207504165U CN201721723319.2U CN201721723319U CN207504165U CN 207504165 U CN207504165 U CN 207504165U CN 201721723319 U CN201721723319 U CN 201721723319U CN 207504165 U CN207504165 U CN 207504165U
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- probe antenna
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Abstract
The utility model is related to Antenna Design field, particularly a kind of circular polarisation probe antenna structure.It includes sequentially connected current feed department, metal shell and Filled Dielectrics portion, wherein, the current feed department is disc, which is provided with a rectangular waveguide；The Filled Dielectrics portion includes sequentially connected frustum, cylindrical portion and waveguide stage portion；The waveguide stage portion includes at least two waveguide steps, and the top of the waveguide stage portion is provided with rotation waveguide cell, and the rotation waveguide cell matches, and be inserted in the rectangular waveguide with rectangular waveguide shape；The metal shell is wrapped in the outside of cylindrical portion and waveguide stage portion.
Description
Technical field
The utility model is related to Antenna Design field, particularly a kind of circular polarisation probe antenna structure.
Background technology
Probe antenna is mainly used in the test site of wireless product, such as near field test system, to be measured for calibration
The performance of antenna, including the performances such as gain, near field amplitude and phase, directional diagram, minor level, polarization purity.In near-field test
Usually require that the characteristics such as small probe antenna size, high gain, easy for installation, conventional probe antenna is difficult to meet above-mentioned want simultaneously
It asks.
Utility model content
The goal of the invention of the utility model is for near-field test particular/special requirement, provides a kind of easy to use, installation letter
It is single, cost is relatively low, high gain miniaturization circular polarisation probe antenna.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of circular polarisation probe antenna structure, including：
Current feed department, the current feed department are disc, which is provided with a rectangular waveguide；
Filled Dielectrics portion, the Filled Dielectrics portion include sequentially connected frustum, cylindrical portion and waveguide stage portion；It is described
Waveguide stage portion includes at least two waveguide steps, and the top of the waveguide stage portion is provided with rotation waveguide cell, the rotation
Waveguide cell is matched with rectangular waveguide shape, and is inserted in the rectangular waveguide；
Metal shell is wrapped in the outside of cylindrical portion and waveguide stage portion.
Further, the waveguide step is two, respectively first wave guide step and second waveguide step.
Further, the frustum, waveguide stage portion and rotation waveguide cell are by a cylinder identical with cylindrical portion diameter
Body cutting is made.
Further, symmetrically cutting is specified for corresponding position on the cylinder for each step of the waveguide stage portion
Depth is formed；It is parallel to each other to cut all step planes formed.
Further, the seamed edge intersected with cylindrical side of the step plane is provided with rounded corner.
Further, the rectangular section broadside of the rotation waveguide cell and the step plane are in 45 degree of angles.
Further, it is provided at least one location hole on the current feed department.
Further, it is provided at least one screw hole on the current feed department.
Further, the dielectric material of the Filled Dielectrics portion filling is polytetrafluoroethylene (PTFE).In some embodiments, the cone
Platform, cylindrical portion and waveguide stage portion, rotation waveguide cell are filled by filled media material polytetrafluoroethylene (PTFE)；And in other
In embodiment, cylindrical portion and waveguide stage portion, the packing material for rotating waveguide cell are air, shape by metal shell Lai
It is defined.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are：The utility model provides
Circular polarisation probe antenna structure using feedback Filled Dielectrics mode, reduce antenna size, the medium conical that Filled Dielectrics portion protrudes
Platform structure can effectively improve antenna gain, and rotate 45 degree of angles of waveguide cell and at least two waveguide step structures can be effective
Promote polarization purity；In addition in a particular embodiment, also location hole and screw hole are designed in mounting surface so that structure whole ten
Divide and be easily installed.
Description of the drawings：
Fig. 1 is the overall structure that the utility model provides fixed circular polarisation probe antenna.
Fig. 2 is current feed department and other component mounting surface schematic diagram.
Fig. 3 is current feed department and metal shell joint face schematic diagram.
Fig. 4 is metal shell structure schematic diagram.
Fig. 5 is Filled Dielectrics portion structure diagram.
Fig. 6 is that Filled Dielectrics portion forms schematic diagram.
Fig. 7 a are rotation waveguide cell right-hand polarization schematic diagrams.
Fig. 7 b are rotation waveguide cell left-handed polarization schematic diagrams.
It is marked in figure：1- Filled Dielectrics portion, 11- frustums, 12- first wave guide steps, 13- second waveguide steps, 13a-
Two waveguide step profile section broadsides, 13b- second waveguide step profile section short sides, 14- rotation waveguide cell, 2- metal shells, 21,22- it is fixed
Position pin hole, 23,24- mounting screw holes, 3- current feed departments, the first threaded holes of 31-, 32- first positioning holes, 33,34- rectangular waves
It leads, the second location holes of 35-, the second threaded holes of 36-.
Specific embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention is further described in detail.It should be appreciated that specific embodiment described herein is only explaining this
Utility model is not used to limit the utility model.
Embodiment 1：A kind of circular polarisation probe antenna structure, including：
Current feed department 3, the current feed department 3 are disc, which is provided with a rectangular waveguide 33
（34）.
Metal shell 2 is wrapped in 15 grades of the outside of cylindrical portion 15 and waveguide stage portion, interior space shape and cylindrical portion
Waveguide stage portion exactly matches, and shape is cylinder.
Filled Dielectrics portion 1, including sequentially connected frustum 11, cylindrical portion 15 and waveguide stage portion；The waveguide step
Portion includes at least two waveguide steps, and the top of waveguide stage portion is provided with rotation waveguide cell 14, rotates waveguide cell 14 and rectangle
Waveguide 33（34）Shape matches, and is inserted in the rectangular waveguide 33；The waveguide step is two or more, in this implementation,
The waveguide step is two, respectively first wave guide step 12 and second waveguide step 13；As shown in fig. 6, frustum 11, waveguide
Stage portion and rotation waveguide cell 14 are made of a cylinder cutting identical with cylindrical portion diameter；Frustum 11 can increase antenna increasing
Benefit improves probe antenna directional diagram；Each step of waveguide stage portion corresponding position on the cylinder is symmetrically cut
Designated depth is cut to be formed；Cut all step planes formed（Such as the step plane 120 of the first wave guide step in Fig. 5）Each other
It is parallel；The seamed edge intersected with cylindrical side of the step plane is provided with rounded corner（Such as the first wave guide step step in Fig. 5
Plane 120 is wanted to hand over the seamed edge 131 of seamed edge 121 and second waveguide step with cylindrical side）；In the present embodiment, cylindrical portion 15
Length can be adjusted between 0 ~ designated value as needed.
In order to facilitate the installation of, as shown in Fig. 2, current feed department 3 is with setting on other component mounting surface, there are two the second location holes
32, it is positioned when being installed for current feed department 3 with other component；Setting simultaneously there are four the first threaded hole 31, for antenna it is whole with
The installation of other component is fixed；As shown in figure 3, two second positioning are again provided on current feed department 3 and 2 joint face of metal shell
Hole 35 and two the second threaded holes 36 are respectively used to position and be fixedly connected when metal shell 2 is connect with current feed department 3；With
It is corresponding, in Fig. 4 it can be seen that, on the joint face that metal shell 2 is connect with current feed department 3, be provided with the second location hole 35,
The corresponding positioning pin nail hole 21,22 in second threaded hole, 36 position and mounting screw holes 23,24.
According to polarization of electromagnetic field principle, circular polarisation is realized, need to meet three conditions：（1）Two field component spaces are just
It hands over；（2）Two field component amplitudes are equal；（3）Two field component phases differ 90 °.
Meanwhile looked over when from the direction of propagation of wave, if left hand helix is presented with the variation of time in wave vector direction
Rule is then left-hand circular polarization wave, if meeting right-hand screw rule, for right-handed circular polarization wave.
The section exemplary plot in the case of two kinds is set forth in Fig. 7 a, Fig. 7 b；In the present embodiment, first wave guide step 12,
The setting of second waveguide step 13 and rotation waveguide cell 14 is precisely in order to matching and the phase of adjusting quadrature component, realize circular polarisation
Required condition.For amplitude, two amplitudes such as orthogonal can be generated by rotating waveguide cell 14 and second waveguide step 13
Field component；For phase, the phase of two field components is adjusted by second waveguide step 13, first wave guide step 12, is made
It is 90 ° to obtain its phase difference.
In order to further illustrate the operation principle of the probe antenna, arrange herein, Fig. 7 a, Fig. 7 b are from antenna
Back is looked over toward aerial radiation mouth face, i.e., is looked over along the direction in current feed department 3 toward Filled Dielectrics portion 1, unless otherwise specified,
Elaboration herein is in accordance with the principle.Filled Dielectrics portion midfield E is distributed perpendicular to waveguide broadside；With right-handed circular polarization in Fig. 7 a
It is illustrated for wave, broadside 13b and rotation 14 section broadside angle at 45 ° of waveguide cell, the electricity in 13 section of second waveguide step
Field E enters second waveguide step 13 by rotation waveguide cell 14 and is divided to the electric field Ea` orthogonal for two and Eb` components, by adjusting
Rotate the length of the section broadside 13b of the length and second waveguide step 13 of 14 Rectangle filling waveguide broadside of waveguide cell and narrow side
It can be so that Ea` and Eb` component sizes be equal.Ea` and Eb` components are propagated in first wave guide step 12, second waveguide step 13
The different i.e. phase change of wavelength is different, if the section broadside 13b of second waveguide step 13 is narrowed, Eb` components are than Ea` points
Amount is advanced to reach frustum 11, and adjustment first wave guide step 12,13 length of second waveguide step make 11 phase of arrival frustum advanced
90 °, at this point, meeting right-handed circular polarization condition, therefore the electromagnetic wave being radiate from frustum 11 is right-handed circular polarization wave.
The dielectric material that Filled Dielectrics portion 1 is filled is polytetrafluoroethylene (PTFE).In some embodiments, the frustum 11, cylindrical portion
15 and waveguide stage portion, rotation waveguide cell 14 by filled media material polytetrafluoroethylene (PTFE) fill；And implement in other
In example, cylindrical portion 15 and waveguide stage portion, the packing material of rotation waveguide cell 14 are air, and shape is by metal shell 2
Interior space shape be defined.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (9)
1. a kind of circular polarisation probe antenna structure, which is characterized in that including：
Current feed department, the current feed department are disc, which is provided with a rectangular waveguide；
Filled Dielectrics portion, the Filled Dielectrics portion include sequentially connected frustum, cylindrical portion and waveguide stage portion；The waveguide
Stage portion includes at least two waveguide steps, and the top of the waveguide stage portion is provided with rotation waveguide cell, the rotation waveguide
Section matches, and be inserted in the rectangular waveguide with rectangular waveguide shape；
Metal shell is wrapped in the outside of cylindrical portion and waveguide stage portion.
2. circular polarisation probe antenna structure according to claim 1, which is characterized in that the waveguide step is two, point
It Wei not first wave guide step and second waveguide step.
3. circular polarisation probe antenna structure according to claim 1 or 2, which is characterized in that the frustum, waveguide stage portion
And rotation waveguide cell is made of a cylinder cutting identical with cylindrical portion diameter.
4. circular polarisation probe antenna structure according to claim 3, which is characterized in that each of the waveguide stage portion
Rank corresponding position on the cylinder symmetrically cuts designated depth and is formed；All step planes that cutting is formed are put down each other
Row.
5. circular polarisation probe antenna structure according to claim 4, which is characterized in that the step plane and cylindrical side
The seamed edge that face is intersected is provided with rounded corner.
6. circular polarisation probe antenna structure according to claim 4, which is characterized in that the rectangle of the rotation waveguide cell is cut
Face broadside is in 45 degree of angles with the step plane.
7. circular polarisation probe antenna structure according to claim 1, which is characterized in that be provided at least on the current feed department
One location hole.
8. circular polarisation probe antenna structure according to claim 1, which is characterized in that be provided at least on the current feed department
One screw hole.
9. circular polarisation probe antenna structure according to claim 1, which is characterized in that Jie of the Filled Dielectrics portion filling
Material is polytetrafluoroethylene (PTFE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721723319.2U CN207504165U (en) | 2017-12-12 | 2017-12-12 | A kind of circular polarisation probe antenna structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721723319.2U CN207504165U (en) | 2017-12-12 | 2017-12-12 | A kind of circular polarisation probe antenna structure |
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| CN207504165U true CN207504165U (en) | 2018-06-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887693A (en) * | 2017-12-12 | 2018-04-06 | 成都雷电微力科技有限公司 | A kind of circular polarisation probe antenna structure |
-
2017
- 2017-12-12 CN CN201721723319.2U patent/CN207504165U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887693A (en) * | 2017-12-12 | 2018-04-06 | 成都雷电微力科技有限公司 | A kind of circular polarisation probe antenna structure |
| CN107887693B (en) * | 2017-12-12 | 2023-11-17 | 成都雷电微力科技股份有限公司 | Circularly polarized probe antenna structure |
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Address after: 610041 Shiyang Industrial Park, No.288, Yixin Avenue, hi tech Zone, Chengdu, Sichuan Province Patentee after: Chengdu lightning Micro Power Technology Co., Ltd Address before: 610213 Shiyang Industrial Park, hi tech Zone, Chengdu, Sichuan Patentee before: RML TECHNOLOGY Co.,Ltd. |