CN203367473U - Antenna - Google Patents
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- CN203367473U CN203367473U CN 201320476843 CN201320476843U CN203367473U CN 203367473 U CN203367473 U CN 203367473U CN 201320476843 CN201320476843 CN 201320476843 CN 201320476843 U CN201320476843 U CN 201320476843U CN 203367473 U CN203367473 U CN 203367473U
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Abstract
The utility model provides an antenna including a radiation plate, a radiation unit, a parasitic unit, a feeding device, and a short circuit device. The radiation unit is a planar array structure made of conductive materials, the radiation unit is in a hollow shape formed through the superposition of two concentric patterns and includes at least two radiation sheets, the radiation sheets are planar patterns in any shape of a circular fan, a trapezoid or other polygons, the radiation sheets are connected with the radiation plate via a feed device at at least a first position, and is in short-circuit connection with the radiation plate at at least a second position, and the parasitic unit is arranged in the circular center space surrounded by the radiation sheets and is provided with at least one short-circuit point. According to the utility model, the radiation unit is in a hollow structure, so that the multi-layer radiation unit and the parasitic unit can be superposed at the position of the hollow structure to realize a plurality of resonance points in a shorter height, the bottom section is arranged in the height range only having a wavelength of 0.033, and about 75% bandwidth can be achieved.
Description
Technical field
The utility model relates to wireless communication technology field, especially, relates to a kind of antenna.
Background technology
Become the transformation tendency of data traffic from voice communication along with mobile communication, the flow obstructing problem of mobile data communication can constantly be upgraded and loom large.The wide-band communication system of wideband radio transmission technique can provide digital voice data and video data, can complete fast multipath environment addressing and identification, alleviates the band resource requirement of growing tension, meets fast-developing consumption electronic product requirement.
And the antenna of switching energy is the visual plant of broadband system, its improvement in performance also has been subject to attention in the industry.Existing vertical polarized antenna generally adopts monopole antenna, although monopole antenna, after the optimization of the features such as shape, can be obtained larger bandwidth, is difficult to accomplish bottom profile, and the requirement for height of general antenna is at the 0.2-0.25 wavelength.As the common monopole antenna of Fig. 1 (a), its height approximates 0.25 wavelength, and this kind of monopole antenna top adds load capacity, although low section that can be has to a certain degree been sacrificed the bandwidth of antenna.In general load the mode of load capacity by top, height will, more than 0.15 wavelength, just can be obtained the bandwidth more than 50%.As the common antenna of falling L of Fig. 1 (b), antenna can still can narrow down the low section of antenna to bandwidth, has also increased the component of horizontal polarization.The antenna of falling L, if highly accomplish 0.05 wavelength, bandwidth is generally in 5% left and right.
Operator is in order to prevent the data traffic obstructing problem, and the electric wave blind area fixes up an aerial wire to improve the coverage rate of electric wave blind area in hotel, office building, underpass etc.Existing indoor ceiling aerial is all generally common monopole antenna, so need very high physical height, the height of prevailing monopole antenna is that 0.25 wavelength is high.Although can load and easily can reduce the height of antenna by increase, after regrettably reducing antenna height, the broadband of antenna can narrow down a lot.And, because the thickness of this kind of antenna is too large, had a strong impact on the attractive in appearance of hotel, office building etc. after installation.
The utility model content
The utility model purpose is to provide a kind of antenna, to solve the technical problem that existing ceiling mount antenna height and bandwidth can not be satisfactory to both parties, obtains the purpose of slimming and wideband.
For achieving the above object, the utility model provides a kind of antenna, comprises radiation unit, is positioned at parasitic element and the feeder equipment of radiation unit center; Radiation unit is connected with radial shield by feeder equipment at least one primary importance place, and at least one second place place and radial shield short circuit;
Described radiation unit is the planar array structure that electric conducting material is made, and described radiation unit is the hollow shape that two concentric pattern fits form, and comprises at least two radiograms, described radiogram to be shaped as ring fan-shaped or trapezoidal; Described parasitic element be positioned at described radiogram around the annular center space, and be provided with at least one short circuit point.
Preferably, the short circuit of described parasitic element point is located at the center into cross section, or is with centrosymmetric at least two positions.
Preferably, described parasitic element and described radiation unit are positioned at same level, or plane, parasitic element place is higher than described radiation unit place plane 1-30mm.
Preferably, the area of described at least two radiograms is identical or not identical.
Preferably, described parasitic element is hollow-core construction, and the second radiation unit is set in described hollow-core construction; The short circuit point symmetry of described parasitic element is distributed in the edge of described parasitic element.
Preferably, described the second plane, radiation unit place is higher than described parasitic element place plane 1-30mm.
Preferably, described the second radiation unit is the planar array structure that electric conducting material is made, and described the second radiation unit is the hollow shape that two concentric pattern fits form, and comprises at least two radiograms.
Preferably, the middle vacancy higher than described the second 1-30mm of place, plane, radiation unit place, arrange the 3rd radiation unit or the second parasitic element.
Preferably, the M level structure is set in described parasitic element, described structure is parasitic element or radiation unit;
Adjacent structure is parasitic element and radiation unit, or is radiation unit and radiation unit.
Preferably, described antenna periphery is provided with outer cover.
The utlity model has following beneficial effect:
1, physical size is thin: the utility model antenna radiation unit is set to hollow structure, the radiation unit of a plurality of levels and parasitic element can be placed on to the hollow structure position with overlapping, thereby realize a plurality of resonance points in shorter height, make antenna of the present utility model can bottom profileization to the altitude range that 0.033 wavelength is only arranged;
2, with roomy: the utility model antenna has adopted special novel array element structure to realize the vertical polarized antenna in ultrathin type and broadband.Not only can utilize the space of hollow radiation unit to increase parasitic element, thereby realize second resonance point, realize larger bandwidth.Wherein, the cross-sectional area of radiation unit sheet and radiation unit with the distance affects of radial shield the first resonance frequency.In general, the cross-sectional area of radiation unit sheet increases, and distance increases, and the first resonance frequency reduces.The cross-sectional area of parasitic element and parasitic element with the distance affects of radial shield the second resonance frequency.In general, the cross-sectional area of parasitic element increases, and distance increases, and the second resonance frequency reduces.Can also in parasitic element, continue increases by the second radiation unit, thereby realizes the 3rd resonance point, further realizes larger bandwidth on the basis of the second resonance point.By that analogy, the utility model antenna can be obtained approximately 75% bandwidth.
As shown in figure 13, the first resonance point is about 1.65GHz, is to be determined by the first radiation unit, and the second resonance point is about 2.5GHz, and institute's bandwidth range of getting covers 1.5GHz-2.9GHz, can meet the different requirements of the various communication systems such as DCS/PCS/WCDMA/LTE.Certainly, cross-sectional area that also can be by enlarging the first radiation unit and suitable increase the first radiation unit and the distance of radial shield reduce the first resonance frequency, and make antenna resonance at the 0.9GHz frequency band, meet the various low frequency communication systems such as GSM900.Then the modes such as the 3rd resonance frequency that the second resonance frequency restricted by adjusting parasitic element and the second radiation unit restrict, can make antenna be operated in the existing all low frequencies of the mobile phones such as 0.698GHz-0.96GHz and 1.5-2.9GHz and high frequency communication system.
3, good radiation characteristic: the utility model antenna is because adopted special novel array element structure to make this antenna obtain the good antenna pattern of common monopole antenna (referring to the directivity graph of Figure 15-16).As shown in figure 14, the horizontal distribution electric current of radiation unit and the horizontal current of radial shield be all payments almost, have only retained the electric current radiation of vertical direction.This sample new antenna has just obtained the desired good radiation characteristic in good electric wave blind area.As shown in figure 15, on horizontal profile, no matter be one week homogeneous radiation of which place 360 degree, obtained omnidirectional's characteristic of fine circularity.As shown in figure 16, on vertical section, because the effect of radial shield, the greatest irradiation direction of antenna (has for example been regulated a little, at the reflecting plate diameter, be 0.8 wavelength, antenna is when 180 ° of directions, and it is 50 ° of left and right that antenna of the present invention radiation direction in the vertical direction is approximately the angle of depression, as shown in arrow in Figure 16), obtained needed typical good radiation characteristic.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.Below, with reference to figure, the utility model is described in further detail.
The accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the antenna structure view of prior art, (a) is the monopole antenna structural representation, is (b) antenna structure view of falling L;
Fig. 2 is one of antenna structure view of the present utility model;
Fig. 3 is two of antenna structure view of the present utility model;
Fig. 4 is three of antenna structure view of the present utility model;
Fig. 5 is four of antenna structure view of the present utility model;
Fig. 6 is five of antenna structure view of the present utility model;
Fig. 7 is six of antenna structure view of the present utility model;
Fig. 8 is seven of antenna structure view of the present utility model;
Seven the A-A ' that Fig. 9 is antenna structure view of the present utility model is to one of cutaway view;
Seven the A-A ' that Figure 10 is antenna structure view of the present utility model is to two of cutaway view;
Seven the A-A ' that Figure 11 is antenna structure view of the present utility model is to three of cutaway view;
Seven the A-A ' that Figure 12 is antenna structure view of the present utility model is to four of cutaway view;
The standing-wave ratio figure that Figure 13 is antenna of the present invention;
The sense of current that Figure 14 is antenna of the present invention and antenna pattern;
The horizontal plane directional characteristic schematic diagram that Figure 15 is antenna of the present invention;
The vertical plane directional characteristic schematic diagram that Figure 16 is antenna of the present invention;
Wherein, 1, radiogram, 2, parasitic element, the 3, second radiation unit, the 4, second parasitic element, 5, the short circuit point, 6, radial shield.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can limit and cover according to claim is implemented.
The utility model discloses a kind of antenna, comprise radiation unit, be positioned at parasitic element and the feeder equipment of radiation unit center; Radiation unit is connected with radial shield by feeder equipment at least one primary importance place, and at least one second place place and radial shield short circuit.
Described radiation unit is the planar array structure that electric conducting material is made, described radiation unit is the hollow shape that two concentric pattern fits form, comprise at least two radiograms, described radiogram is for encircling the planar graph of the arbitrary shapes such as fan-shaped or trapezoidal or other polygons; Encircle fan-shaped several parts for an annular radially is divided into, trapezoidal hollow shape several parts that outside direction is divided into along center equally for two quadrangle fits are formed.The quantity of radiogram can be more than 2 or 2, but but preferably 3-4, effect is good.
Radiation unit can be various electric conducting materials and makes, and is preferably copper and aluminium.
Described parasitic element be positioned at described radiogram around central space, be provided with at least one short circuit point.Parasitic element has produced second resonance point, makes the frequency of antenna broaden.Obvious, the cross section size of parasitic element can not surpass the area of central space.Refer to following examples one to three.
Embodiment mono-,
Referring to Fig. 2, the radiation unit of antenna is two hollow shape that circular fit forms, comprise the ring fan shooting sheet 1 that four central angles are 90 °, form a space at four relative center positions of central angle that encircle fan shooting sheets 1, for placing parasitic element 2.Parasitic element 2 cross sections are circular, and area is less than the central space area, and the short circuit point 5 on parasitic element 2 is arranged on home position.Short circuit point 5 on radiogram 1 also is arranged on the middle position of each radiogram.
Embodiment bis-,
Referring to Fig. 3, the radiation unit of antenna is the hollow shape that two quadrangle fits form, and comprises four trapezoidal radiograms 1, forms a space at four relative center positions of trapezoidal minor face, for placing parasitic element 2.Parasitic element 2 cross sections are square, and area is less than the central space area, and the short circuit point 5 on parasitic element 2 is arranged on the marginal position of square parasitic element 2.5 middle positions that still are arranged on each radiogram of short circuit point on radiogram 1.
From embodiment bis-and three, the position of short circuit point 5 can be arranged on central authorities or edge according to the actual requirements, does not affect the realization of the embodiment of the present invention.Fig. 4 to Fig. 8 of the following example does not mark the particular location of short circuit point 5 on figure, can arrange flexibly.
Embodiment tri-,
Referring to Fig. 4, the radiation unit of antenna is the hollow shape that two triangle fits form, and comprises three trapezoidal radiograms 1, forms a space at three relative center positions of trapezoidal minor face, for placing parasitic element 2.Parasitic element 2 cross sections are triangle, and area is less than the central space area, and the short circuit point is arranged on the triangle center position.
In addition, the short circuit of described parasitic element is set to the cross-section center position, or is with centrosymmetric at least two positions.Refer to following embodiment tetra-and embodiment five.
Embodiment tetra-,
The radiation unit of antenna is two hollow shape that circular fit forms, and comprises the ring fan shooting sheet 1 that four central angles are 90 °, forms a space at four relative center positions of central angle that encircle fan shooting sheets 1, for placing parasitic element 2.Parasitic element 2 cross sections are circular, and area is less than the central space area, and the short circuit point is four, is separately positioned on the symmetric position at edge, the center of circle.
Embodiment five,
The radiation unit of antenna is the hollow shape that two quadrangle fits form, and comprises four trapezoidal radiograms 1, forms a space at four relative center positions of trapezoidal minor face, for placing parasitic element 2.Parasitic element 2 cross sections are square, and area is less than the central space area, and the short circuit point is four, is separately positioned on square corner location.
Preferably, described parasitic element 2 can be positioned at same level with described radiation unit, or plane, parasitic element place also can be higher than plane, described radiation unit place.Refer to following embodiment six and embodiment seven.
Embodiment six,
The radiation unit of antenna is two hollow shape that circular fit forms, comprise the ring fan shooting sheet 1 that four central angles are 90 °, the relative center position of central angle at four ring fan shooting sheets 1 forms a space, for placing parasitic element 2, parasitic element 2 planes, place are circular higher than radiogram 1 plane, place 1-30mm parasitic element 2 cross sections, area is less than the central space area, and the short circuit point is four, is separately positioned on the symmetric position at edge, the center of circle.
Embodiment seven,
The radiation unit of antenna is the hollow shape that two quadrangle fits form, comprise four trapezoidal radiograms 1, form a space at four relative center positions of trapezoidal minor face, for placing parasitic element 2, parasitic element 2 planes, place are higher than radiogram 1 plane, place 1-30mm, and parasitic element 2 cross sections are square, and area is less than the central space area, the short circuit point is four, is separately positioned on square corner location.
Preferably, the area of described at least two radiograms 1 of radiation unit is identical or not identical.Refer to following embodiment eight and embodiment nine.
Embodiment eight,
The radiation unit of antenna is two hollow shape that circular fit forms, comprise that three central angles are respectively the ring fan shooting sheet 1 of 130 °, 120 ° and 110 °, the relative center position of central angle at three ring fan shooting sheets 1 forms a space, for placing parasitic element 2.Parasitic element 2 cross sections are circular, and area is less than the central space area, and the short circuit point is arranged on home position.
Embodiment nine,
Referring to Fig. 5, the radiation unit of antenna is the hollow shape that two triangle fits form, and comprises five irregular shape radiograms 1, in a space of center position formation of five irregular shape radiograms 1, for placing parasitic element 2.Parasitic element 2 cross sections are triangle, and area is less than the central space area, and the short circuit point is arranged on the triangle center position.
Further, described parasitic element 2 can be hollow-core construction, and the second radiation unit 3 is set in described hollow-core construction; Short circuit is symmetrically distributed in the edge of described parasitic element 2.Refer to embodiment ten.
Embodiment ten,
Referring to Fig. 6, the radiation unit of antenna is two hollow shape that circular fit forms, comprise the ring fan shooting sheet 1 that four central angles are 90 °, form the first central space at four relative center positions of central angle that encircle fan shooting sheets 1, for placing parasitic element 2.Parasitic element 2 cross sections are hollow circular, and outer circumferential area is less than the first central space area, and the short circuit point is four, is separately positioned on the symmetric position at edge, the center of circle.
In the second central space of parasitic element 2 central hollow structures, the second radiation unit 3 is set.
Similar with embodiment six, described the second plane, radiation unit place can be higher than described parasitic element place plane 1-30mm, also can with described parasitic element place same plane.
Following examples all be take hollow shape that radiation unit is that two circular fits form as example describes, and it should be noted, even radiation unit be other concentric shape fits formations, also do not affect the realization of following examples.
The structure of described the second radiation unit 3 also can be similar with radiation unit, and the planar array structure for electric conducting material is made, be comprised of a plurality of radiograms, and the short circuit point symmetry is distributed in the edge of the second radiation unit.Refer to embodiment 11.
Embodiment 11,
The radiation unit of antenna is two hollow shape that circular fit forms, and comprises the ring fan shooting sheet 1 that four central angles are 90 °, forms the first central space at four relative center positions of central angle that encircle fan shooting sheets 1, for placing parasitic element 2.Parasitic element 2 cross sections are hollow circular, and outer circumferential area is less than the first central space area, and the short circuit point is four, is separately positioned on the symmetric position at edge, the center of circle.
Referring to Fig. 7, in the second central space of parasitic element 2 central hollow structures, the second radiation unit 3 is set.The fan shooting sheet 1 that the second radiation unit 3 is 90 ° by four central angles forms.
Preferably, the structure of the second radiation unit can be similar with radiation unit, the planar array structure of not only making for electric conducting material, and described the second radiation unit also can be the hollow shape that two concentric pattern fits form, and comprises at least two radiograms.Refer to embodiment 12.
Embodiment 12,
The radiation unit of antenna is two hollow shape that circular fit forms, and comprises the ring fan shooting sheet 1 that four central angles are 90 °, forms the first central space at four relative center positions of central angle that encircle fan shooting sheets 1, for placing parasitic element 2.Parasitic element 2 cross sections are hollow circular, and outer circumferential area is less than the first central space area, and the short circuit point is four, is separately positioned on the symmetric position at edge, the center of circle.
Referring to Fig. 8, in the second central space of parasitic element 2 central hollow structures, the second radiation unit 3 is set.The second radiation unit 3 is two hollow shape that circular fit forms, and comprises the ring fan shooting sheet 1 that four central angles are 90 °.
Space at the second radiation unit 3 centers, place that the second parasitic element 4, the second parasitic element 4 cross sections can be solid (as shown in Figure 8) or for hollow circular, outer circumferential area is less than the area of central space, and the short circuit point is one, can be arranged on home position.
Be understandable that, if when the second parasitic element 4 cross sections are hollow shape, the radiation unit that can continue therein to place next stage.
Embodiment can also comprise the radial shield 6 that is positioned at all radiation unit and parasitic element bottom, as the support of whole device and the adjusting of antenna greatest irradiation direction.Refer to cutaway view Fig. 9-12 of the present embodiment.
About the relative level position between radiation unit, a plurality of level sleeve structures of parasitic element, what Fig. 9 illustrated is all structures when same level of radiogram 1, parasitic element 2, the second radiation unit 3,4 four levels of the second parasitic element; Figure 10 has showed parasitic element 2, the second radiation unit 3,4 three levels of the second parasitic element structure a little more than radiogram 1; Figure 11 has showed that the second radiation unit 3,4 two levels of the second parasitic element are a little more than parasitic element 2, and parasitic element 2 is a little more than the structure of radiogram 1; Figure 12 showed the second parasitic element 4 a little more than the second radiation unit 3, the second radiation unit 3 a little more than parasitic element 2, parasitic element 2, a little more than the structure of radiogram 1, all can realize goal of the invention of the present invention.
In addition, the space at the second radiation unit 3 centers, can place the second parasitic element 4, also can place the 3rd radiation unit.Refer to embodiment 13.
Embodiment 13,
The radiation unit of antenna is two hollow shape that circular fit forms, and comprises the ring fan shooting sheet 1 that four central angles are 90 °, forms the first central space at four relative center positions of central angle that encircle fan shooting sheets 1, for placing parasitic element 2.Parasitic element 2 cross sections are hollow circular, and outer circumferential area is less than the first central space area, and the short circuit point is four, is separately positioned on the symmetric position at edge, the center of circle.
Referring to Fig. 8, in the second central space of parasitic element 2 central hollow structures, the second radiation unit 3 is set.The second radiation unit 3 is two hollow shape that circular fit forms, and comprises the ring fan shooting sheet 1 that four central angles are 90 °.
Space at the second radiation unit 3 centers, place the 3rd radiation unit, and the 3rd radiation unit cross section is circular, and outer circumferential area is less than the area of central space, and the short circuit point is one, is arranged on home position.
Be understandable that, no matter the space at the second radiation unit 3 centers is to place the second parasitic element 4 or the 3rd radiation unit, its plane, place all can with the second radiation unit 3 place plane parallel, perhaps the second parasitic element 4(the 3rd radiation unit) plane, place, higher than the second radiation unit 3 planes, place, does not affect the realization of embodiment.
And, on the basis of above-described embodiment, also can further improve the structure of the second parasitic element 4 or the 3rd radiation unit, make its scheme that embodiment describes as mentioned above, center is set to hollow structure, thereby constantly increase next stage parasitic element or next stage radiation unit, add a plurality of different resonance, realize multifrequency or wide frequency antenna.If be provided with the M level structure in parasitic element 2, this antenna integral body can form M and adds 2 resonance points, that is to say that can form M adds 2 frequency-band antennas.
Need to remind, the next stage of radiation unit can be parasitic element or radiation unit, but the next stage of parasitic element can only be radiation unit.That is to say, adjacent two-layer configuration can be parasitic element and radiation unit, or can be radiation unit and radiation unit, but can not be parasitic element and parasitic element.
Be understandable that, in described antenna periphery, be provided with outer cover, enter to prevent dust.Described outer cover can be that hemisphere, bell shape, square or irregular shape do not affect the realization of the present embodiment.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. an antenna, is characterized in that, comprises radiation unit, is positioned at parasitic element and the feeder equipment of radiation unit center; Radiation unit is connected with radial shield by feeder equipment at least one primary importance place, and at least one second place place and radial shield short circuit;
Described radiation unit is the planar array structure that electric conducting material is made, and described radiation unit is the hollow shape that two concentric pattern fits form, and comprises at least two radiograms, described radiogram to be shaped as ring fan-shaped or trapezoidal; Described parasitic element be positioned at described radiogram around the annular center space, and be provided with at least one short circuit point.
2. a kind of antenna according to claim 1, is characterized in that, the short circuit point of described parasitic element is located at the center into cross section, or be with centrosymmetric at least two positions.
3. a kind of antenna according to claim 1, is characterized in that, described parasitic element and described radiation unit are positioned at same level, or plane, parasitic element place is higher than described radiation unit place plane 1-30mm.
4. a kind of antenna according to claim 1, is characterized in that, the area of described at least two radiograms is identical or not identical.
5. a kind of antenna according to claim 1, is characterized in that, described parasitic element is hollow-core construction, and the second radiation unit is set in described hollow-core construction; The short circuit point symmetry of described parasitic element is distributed in the edge of described parasitic element.
6. a kind of antenna according to claim 5, is characterized in that, described the second plane, radiation unit place is higher than described parasitic element place plane 1-30mm.
7. a kind of antenna according to claim 5, is characterized in that, described the second radiation unit is the planar array structure that electric conducting material is made, and described the second radiation unit is the hollow shape that two concentric pattern fits form, and comprises at least two radiograms.
8. a kind of antenna according to claim 7, is characterized in that, the middle vacancy higher than described the second 1-30mm of place, plane, radiation unit place, arrange the 3rd radiation unit or the second parasitic element.
9. a kind of antenna according to claim 7, is characterized in that, the M level structure is set in described parasitic element, and described structure is parasitic element or radiation unit;
Adjacent structure is parasitic element and radiation unit, or is radiation unit and radiation unit.
10. a kind of antenna according to claim 5, is characterized in that, described antenna periphery is provided with outer cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320476843 CN203367473U (en) | 2013-08-06 | 2013-08-06 | Antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320476843 CN203367473U (en) | 2013-08-06 | 2013-08-06 | Antenna |
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|---|---|
| CN203367473U true CN203367473U (en) | 2013-12-25 |
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| CN 201320476843 Expired - Lifetime CN203367473U (en) | 2013-08-06 | 2013-08-06 | Antenna |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414014A (en) * | 2013-08-06 | 2013-11-27 | 李章焕 | Antenna |
| CN104103900A (en) * | 2014-07-10 | 2014-10-15 | 电子科技大学 | Low-profile broadband dual polarization omni-directional antenna |
| CN110050385A (en) * | 2018-06-12 | 2019-07-23 | 东莞理工学院 | A kind of bifilar helical antenna for realizing that OAM mode is restructural |
| CN113644452A (en) * | 2021-08-09 | 2021-11-12 | 南京信息工程大学 | Antenna with reconfigurable polarization and directional diagram |
-
2013
- 2013-08-06 CN CN 201320476843 patent/CN203367473U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414014A (en) * | 2013-08-06 | 2013-11-27 | 李章焕 | Antenna |
| CN103414014B (en) * | 2013-08-06 | 2016-02-24 | 李章焕 | A kind of antenna |
| CN104103900A (en) * | 2014-07-10 | 2014-10-15 | 电子科技大学 | Low-profile broadband dual polarization omni-directional antenna |
| CN110050385A (en) * | 2018-06-12 | 2019-07-23 | 东莞理工学院 | A kind of bifilar helical antenna for realizing that OAM mode is restructural |
| CN113644452A (en) * | 2021-08-09 | 2021-11-12 | 南京信息工程大学 | Antenna with reconfigurable polarization and directional diagram |
| CN113644452B (en) * | 2021-08-09 | 2023-04-25 | 南京信息工程大学 | Antenna with reconfigurable polarization and directional diagram |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20160224 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |