CN2694512Y - Flat collapsible dipole antenna - Google Patents
Flat collapsible dipole antenna Download PDFInfo
- Publication number
- CN2694512Y CN2694512Y CNU2004200060682U CN200420006068U CN2694512Y CN 2694512 Y CN2694512 Y CN 2694512Y CN U2004200060682 U CNU2004200060682 U CN U2004200060682U CN 200420006068 U CN200420006068 U CN 200420006068U CN 2694512 Y CN2694512 Y CN 2694512Y
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- Prior art keywords
- antenna
- doublet
- font
- double
- flat plate
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Abstract
The utility model relates to a flat foldable double dipole antenna provided with an omnidirectional radiation field. The antenna comprises a microwave basal plate provided with more than two conduction metal columns and used for conducting the foldable double dipole antenna and a signal ground end, a T-shaped transmission line used for transmitting high-frequency signals, and a balanced transmission line used for increasing the omnidirectional radiation effect of an H-plane, and two foldable double dipole antennas, and the overall length of the metallic thread is near to the full wavelength of the frequency of operation, used for generating the operation modality of the antenna, printed, or etched on the microwave basal plate. The utility model is applicable to the operation of the wireless network frequency band, and has the advantage of omnidirectional radiation on the H-plane, so the utility model is also applicable to the use of the access point of the wireless communication.
Description
Technical field
The utility model relates to a kind of flat plate folding formula double-doublet antenna that has omnidirectional radiation and high-gain on the H-plane, is fit to be applied to the bridge contact (Access Point) of wireless telecommunications.
Background technology
Flourish along with wireless telecommunications, also like the mushrooms after rain the appearance of various communication product and technology, in order to make the emittance can more effective utilization and avoid interference, different products then needs different radiation patterns, wherein the bridge contact of wireless telecommunications then need be on the H-plane (promptly with antenna polarization direction of an electric field plane orthogonal), the radiation pattern that just has omnidirectional radiation, and owing to use the designed antenna of printed circuit board (PCB) to have in light weight, thin thickness, easily assembling, low cost and flexible design degree advantages of higher, so, quite have practical value with the designed H-plane omni-directional antenna of printed circuit board (PCB).
Has the isotropic Antenna Design in H-plane at present, using, the design of wide model is socket type double-doublet antenna (as shown in Figure 1), it utilizes the radiation metal post and approaching isometric grounded metal sleeve of a length near frequency of operation 1/4 wavelength, join with the heart yearn and the ground metal layer of coaxial signal transmission line respectively, though this structure can produce the isotropic radiation pattern in H-plane (Radiation pattern), but the required space of the structure of its cylindrical sleeves more than plane formula come big, its production and assembly are also complicated many; And flat antenna structure, as United States Patent (USP) the 6th, 559, No. 809 " wireless telecommunications flat plane antenna (Planar Antenna forwireless Antenna for wireless Communication) " (as shown in Figure 2), it disclosed is the antenna of a kind of H-plane omnidirectional radiation, though use dull and stereotyped mode to design double-doublet antenna, but because omnidirectional's effect that it produced is subject to asymmetric structure up and down, and have a greatly reduced quality.
The utility model content
The purpose of this utility model is to provide a kind of flat plate folding formula double-doublet antenna with omni-directional radiation pattern, and it utilizes symmetric antenna structure, make have on the H-plane high directivity with in equally distributed omni-directional radiation.
A kind of flat plate folding formula double-doublet antenna with omni-directional radiation pattern of the present utility model can be realized that antenna package of the present utility model contains a microwave base plate, a T font transmission line, a balanced transmission line and two collapsible double-doublet antennas by following structure; Be characterized in: this microwave base plate has a first surface and a second surface and at least two metal conduction columns; This two collapsible double-doublet antenna is positioned at this first surface of this microwave base plate, and it includes an antenna input point, joins with the antenna input point on this T font holding wire; One antenna ground point joins by the antenna ground point on this metal conduction column and this T font earth connection; Two antenna main radiator are set out by this antenna input point and this antenna ground point respectively, extend to spend round about near 180, and have an end respectively; The parasitic body of one antenna parallels with this antenna main radiator, aligns with two ends of this two antennas main radiator respectively in two ends, in order to increase the directive property of antenna; And two connect metal segments, lays respectively at two ends of this two antennas main radiator, in order to the two ends of two terminal and the parasitic bodies of this antenna that connect this two antennas main radiator.
One embodiment of the utility model antenna is applicable to wireless network frequency band (2.4～2.5GHz) operation, and controlled 70 * 5 * 0.4mm that is formed on of this antenna volume
3, making its characteristic that on the H-plane, produces best omnidirectional radiation, the bridge contact of very suitable wireless telecommunications (Access Point) uses, and has high using value.
The flat plate folding formula double-doublet antenna that inventor of the present utility model researched and developed, not only possess the frivolous easy-to-assemble characteristics of plate type antenna, and owing to use collapsible double-doublet antenna when its radiant element, so height that its directive property is come than the plate aerial that uses general double-doublet antenna when radiant element, more since structure of the present utility model at T type transmission line tail end, add one section balanced transmission line, produce desirable H-plane omni-directional radiation characteristic.
For further specifying above-mentioned purpose of the present utility model, design feature and effect, the utility model is described in detail below with reference to accompanying drawing.
Description of drawings
Fig. 1 is the cover system formula double-doublet antenna structure chart of prior art.
Fig. 2 is the flat double-doublet antenna structure chart of prior art.
Fig. 3 is the structure chart of the utility model flat plate folding formula double-doublet antenna embodiment.
Fig. 4 is the structure chart of the collapsible double-doublet antenna embodiment of the utility model.
Fig. 5 is the end view of the collapsible double-doublet antenna embodiment of the utility model.
Fig. 6 returns the experimental measurement result of loss for the collapsible double-doublet antenna embodiment of the utility model.
Fig. 7 is the radiation pattern measurement of the collapsible double-doublet antenna embodiment of the utility model.
Embodiment
Please refer to shown in Figure 3ly, be the structure chart of the utility model flat plate folding formula double-doublet antenna embodiment, the left side is a Facad structure, and the right is the reverse side structure; The structure of this antenna 3 has comprised a microwave base plate 36, a T font transmission line 33, a balanced transmission line 34 and two collapsible double-doublet antennas 35, wherein, this microwave base plate 36 has a first surface (front) and a second surface (reverse side) and at least two metal conduction columns 361 (please refer to shown in Figure 5); This T font transmission line 33 includes T font holding wire 331 and T font earth connection 332, this T font holding wire 331 is positioned at the first surface of this microwave base plate 36, and having a signal input part 31 joins with high-frequency input signal, this T font earth connection 332 is positioned at the second surface of this microwave base plate, and have a signal ground end 32 and join, in order to transmit high-frequency signal with the high-frequency input signal earth terminal; This balanced transmission line 34 is positioned at this T font transmission line 33 tops, and it comprises two metal wire sections parallel to each other, lays respectively on this first surface and this second surface of this microwave base plate 36; And an end of this two metal wire sections parallel to each other joins with the crosspoint of this T font holding wire 331 and this T font earth connection 332 respectively, the other end then is open circuit, in order to increase the omnidirectional radiation effect on H-plane, be 1/2 guide wavelength with its Design of length in the present embodiment, to avoid influencing the input impedance of antenna; This two collapsible double-doublet antenna 35 (please refer to shown in Figure 4) is positioned at this first surface of this microwave base plate 36, this collapsible double-doublet antenna 35 includes the antenna main radiator 353 of two length near 1/4 wavelength, its collapsible double-doublet antenna input 351 is connected to the antenna input point 371 of T font holding wire 331, collapsible double-doublet antenna earth terminal 352, join with the antenna ground point 372 of conducting metal column 361 with T font earth connection 332, two antenna radiators extend round about with 180 degree approximately, and have an end respectively; The parasitic body 355 of one antenna, with antenna main radiator 353 almost parallels, align with two ends of main radiator 353 respectively in two ends, in order to increase the directive property of antenna; Two connect metal segments, lay respectively at two ends of two antenna main radiator 353, in order to the end that connects antenna main radiator 353 two ends with antenna parasitism body 355.Collapsible double-doublet antenna 3 metal wire total lengths are long near the all-wave of frequency of operation, in order to produce antenna operation mode, are printed on the microwave base plate 36.
Fig. 6 is the experimental measurement result who returns loss of an embodiment; Can find out that by the result the utility model antenna successfully excites the mode in 2450MHz, return at 10dB under the definition of loss that its impedance frequency range surpasses in the application of wireless telecommunications bridge contact that therefore 100MHz be suitable for this ISM band.
Fig. 7 is embodiment H-planar radiation field pattern measurement for this reason, and antenna gain (gain) is 3.5dB, and its H-plane not only reaches the effect of omnidirectional, and it is farther greater than conventional sleeve cartridge type or flat 2dB to gain.
Though the utility model is described with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, under the situation that does not break away from the utility model spirit, also can make the variation or the replacement of various equivalences, therefore, as long as in connotation scope of the present utility model in the scope to the variation of the foregoing description, claims that modification all will drop on the application.
Claims (9)
1. flat plate folding formula double-doublet antenna, this antenna package contains a microwave base plate, a T font transmission line, a balanced transmission line and at least two collapsible double-doublet antennas, it is characterized in that: this microwave base plate has a first surface and a second surface and at least two metal conduction columns; This two collapsible double-doublet antenna is positioned at this first surface of this microwave base plate, and it includes an antenna input point, joins with the antenna input point on this T font holding wire; One antenna ground point joins by the antenna ground point on this metal conduction column and this T font earth connection; Two antenna main radiator are set out by this antenna input point and this antenna ground point respectively, extend to spend round about near 180, and have an end respectively; The parasitic body of one antenna parallels with this antenna main radiator, aligns with two ends of this two antennas main radiator respectively in two ends, in order to increase the directive property of antenna; And two connect metal segments, lays respectively at two ends of this two antennas main radiator, in order to the two ends of two terminal and the parasitic bodies of this antenna that connect this two antennas main radiator.
2. flat plate folding formula double-doublet antenna as claimed in claim 1 is characterized in that: this T font transmission line also includes the T font holding wire on this first surface that is positioned at this microwave base plate, and it has a signal input part and high-frequency input signal joins; And being positioned at T font earth connection on this second surface of this microwave base plate, it has a signal ground end and high-frequency input signal ground end joins.
3. flat plate folding formula double-doublet antenna as claimed in claim 2, it is characterized in that: this balanced transmission line is positioned at this T font transmission line top, it comprises two metal wire sections parallel to each other, lay respectively on this first surface and this second surface of this microwave base plate, and an end of this two metal wire sections parallel to each other joins with the crosspoint of this T font holding wire and this T font earth connection respectively, the other end then is open circuit, in order to increase the omnidirectional radiation effect on H-plane.
4. flat plate folding formula double-doublet antenna as claimed in claim 1 is characterized in that: the metal conduction column of this microwave base plate is in order to the antenna ground point of collapsible double-doublet antenna earth terminal of conducting and earth connection.
5. flat plate folding formula double-doublet antenna as claimed in claim 3 is characterized in that: the length of this balanced transmission line is 1/2 guide wavelength.
6. flat plate folding formula double-doublet antenna as claimed in claim 1 is characterized in that: described aerial radiation body length is 1/4 wavelength.
7. flat plate folding formula double-doublet antenna as claimed in claim 1 is characterized in that: the parasitic body length of described antenna is 1/2 wavelength.
8. flat plate folding formula double-doublet antenna as claimed in claim 1 is characterized in that: described connection metal segments length is much smaller than 1/4 wavelength.
9. flat plate folding formula double-doublet antenna as claimed in claim 1 is characterized in that: this collapsible double-doublet antenna metal wire total length is long near the all-wave of frequency of operation, in order to produce antenna operation mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200060682U CN2694512Y (en) | 2004-03-29 | 2004-03-29 | Flat collapsible dipole antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200060682U CN2694512Y (en) | 2004-03-29 | 2004-03-29 | Flat collapsible dipole antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2694512Y true CN2694512Y (en) | 2005-04-20 |
Family
ID=34767656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200060682U Expired - Fee Related CN2694512Y (en) | 2004-03-29 | 2004-03-29 | Flat collapsible dipole antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2694512Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101071902B (en) * | 2006-05-10 | 2011-12-28 | 中兴通讯股份有限公司 | Antenna device of monitoring unit for monitoring system |
| CN103380541A (en) * | 2011-02-18 | 2013-10-30 | 西门子公司 | A meander line antenna |
-
2004
- 2004-03-29 CN CNU2004200060682U patent/CN2694512Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101071902B (en) * | 2006-05-10 | 2011-12-28 | 中兴通讯股份有限公司 | Antenna device of monitoring unit for monitoring system |
| CN103380541A (en) * | 2011-02-18 | 2013-10-30 | 西门子公司 | A meander line antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LIANZHAN SCIENCE ELECTRONIC ( KUNSHAN ) CO., LTD. Free format text: FORMER OWNER: VIEWTRAN (SHENZHEN) INC. Effective date: 20070622 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070622 Address after: 215321, No. 888, Zhang Pu town, Kunshan, Jiangsu, Huayuan Road Patentee after: Advanced Connectek Electronic Technology (Kunshan) Inc. Address before: Baoan District Guanlan town Shenzhen city Guangdong province 518110 Song Yuan Village Head Road No. 34 Patentee before: Lianzhan Science & Technology (Shenzhen) Co., Ltd. |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |