CN102723588A - Stereo antenna - Google Patents
Stereo antenna Download PDFInfo
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- CN102723588A CN102723588A CN2012101988902A CN201210198890A CN102723588A CN 102723588 A CN102723588 A CN 102723588A CN 2012101988902 A CN2012101988902 A CN 2012101988902A CN 201210198890 A CN201210198890 A CN 201210198890A CN 102723588 A CN102723588 A CN 102723588A
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Abstract
The invention discloses a stereo antenna. The stereo antenna is characterized by comprising a first base plate and a second base plate which are perpendicularly bisected, a first inverted triangular radiation unit and a coplanar waveguide structure at the bottom of the first base plate are disposed on the first base plate, and a triangular vertex angle portion of the first radiation unit is integrally connected with a central guide strip of the coplanar waveguide structure. A second inverted triangular radiation unit is arranged on the second base plate, the first radiation unit and the second radiation unit are connected with each other at the intersection of the first base plate and the second base plate, and the triangular apex angle of the first radiation unit is identical to that of the second radiation unit. The stereo antenna is simple in structure, convenient to manufacture, low in cost and 50% smaller than a normal monopole in size.
Description
Technical field
The present invention relates to a kind of antenna, relate in particular to the three-dimensional antenna that a kind of radio communication is used.
Background technology
The fast development of radio communication has proposed miniaturization and strong request cheaply for its requisite antenna, traditional antenna since the serious obstruction of its size and cost problem the development of radio communication.In recent years; A lot of scholars are devoted to the miniaturization of antenna and the research of low-cost aspect; Document Qi Luo for example; H.M.Salgado, J.R.Pereira.Compact Printed C-shaped Monopole Antenna with Chip Inductor [J] .IEEE, the method that is employed in the integrated chip inductor in monopole antenna top in 2011. has reduced the size of antenna effectively; Document A.A.Deshmukh and G.Kumar.Comapct Broadband Stacked Microstrip Antennas [J] .IEEE Antennas and Propagation Society International Symposium 2006; Albuquerque; Propose among the July 2006 to use foldable structure to increase the length that detours of electric current, reduce the physical size of antenna by this; Document A.Hoorfar and A.Perrotta.An Experimental Study of Microstrip Antennas on Very High Permittivity Ceramic Substrates and Very Small Ground Planes [J]; IEEE Tran.Antennas Propag; Vol.49, No.4 adopts the dielectric-slab of high-k to make antenna among the April 2001..Though these methods can realize the miniaturization of antenna, itself otherwise increased the cost of antenna, or having increased structure complexity makes troubles to processing.
Printed monopole antenna is installed on the ground plane, and its making is more convenient, and cost is lower, still, in the prior art, is generally quarter-wave antenna, needs through further designing to realize miniaturization.
Summary of the invention
Goal of the invention of the present invention provides a kind of three-dimensional antenna, through the improvement of structure, realizes the miniaturization and the low cost of antenna, to adapt to the demand of development communication technologies.
For reaching the foregoing invention purpose; The technical scheme that the present invention adopts is: a kind of three-dimensional antenna; Comprise orthogonal first substrate and second substrate of dividing setting equally; Said first substrate is provided with first radiating element and the coplanar waveguide structure that is positioned at first base plate bottom of del, and the triangle top corner part of said first radiating element is connected with the center conductor band one of coplanar waveguide structure; Said second substrate is provided with second radiating element of del, and first radiating element and second radiating element interconnect at the infall of first substrate and second substrate, and the triangle drift angle of first radiating element and second radiating element is identical.
In the technique scheme, the leg-of-mutton drift angle of said first radiating element and second radiating element is 2 θ, and θ is 14 °.
Further technical scheme is connected with the top-loaded disk at said first substrate and the second substrate top, and the center of circle of said top-loaded disk is positioned at the infall of first substrate and second substrate, and the lower surface of top-loaded disk is a conducting surface.
Wherein, the radius of said top-loaded disk is 20～31 millimeters.
Further technical scheme in four quadrants of said first substrate and second substrate intersection formation, is respectively equipped with a vertical metal column that is provided with, and has 1～3 mm clearance between said metal column upper end and top-loaded disk.
The diameter of said metal column is 1 millimeter, and the distance of the metal column and first substrate and second substrate is 5 millimeters.
In the technique scheme; Said first substrate and the second substrate upper edge substrate center line are respectively equipped with the rectangular through-hole that is provided with at interval; Rectangular through-hole position on first substrate and second substrate is arranged in a crossed manner, and win substrate and second substrate are fixed at substrate center line place each other.
Optimized technical scheme, in the said coplanar waveguide structure, the width of center conductor band is 3 millimeters, highly is 3～15 millimeters, center conductor band and both sides conductor plate be spaced apart 0.4 millimeter; The height that the top of the del on said first substrate overlaps with the center conductor band is 2～14 millimeters; The height of first radiating element and second radiating element is 43.5 millimeters.
Because the technique scheme utilization, the present invention compared with prior art has advantage:
1. the present invention carries out the architecture advances acquisition on the basis of traditional printing monopole antenna, and is simple in structure, easy to make, with low cost.
2. the present invention reaches the effect of size reduction for the first time through an end of expansion printed monopole antenna; Then with two gain and bandwidth that guarantee it with the printed monopole antenna square crossings placement and the shared same coplanar waveguide feeder line of spline structure; Load the circular metal dish at aerial head at last and reached the effect that the top inductance loads; Further dwindle the size of antenna, lower profile, dwindled 50% than common monopole.
3. antenna of the present invention has good gain and omnidirectional radiation characteristic, is particularly suitable for using as the RFID antenna.
Description of drawings
Fig. 1 is the structural representation of embodiment one.
Fig. 2 is the sketch map of first substrate among Fig. 1.
Fig. 3 is the sketch map of second substrate among Fig. 1.
Fig. 4 is actual measurement S11 and emulation S11 map.
Fig. 5 is that antenna is at the E at 915MHz place face and H face directional diagram.
Fig. 6 is the antenna pattern result that microwave dark room is measured.
Antenna return loss figure when being 27mm, 29mm and 31mm shown in Figure 7 for the radius of top-loaded disk.
S parameter when Fig. 8 is in different length for tuning post.
Wherein: 1, top-loaded disk; 2, first substrate; 3, first radiating element; 4, second substrate; 5, second radiating element; 6, coplanar waveguide structure; 7, metal column.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Embodiment one: referring to shown in Figure 1, a kind of three-dimensional antenna comprises orthogonal first substrate 2 and second substrate 4 of dividing setting equally.As shown in Figure 2, said first substrate 2 is provided with first radiating element 3 and the coplanar waveguide structure 6 that is positioned at first base plate bottom of del, and the triangle top corner part of said first radiating element 3 is connected with the center conductor band one of coplanar waveguide structure 6; As shown in Figure 3, said second substrate 4 is provided with second radiating element 5 of del.
With the dielectric-slab at first radiating element and place along centreline space across hollowing out so that the crossed square sawtooth of second radiating element passes and links to each other.Like this, two radiating elements have just been realized physical connection.
The dielectric layer of first substrate and second substrate adopts relative dielectric constant 4.4, loss angle tangent 0.02, and thickness is the FR4 plate of 1.6mm.
The antenna of design 915MHz utilizes the Electromagnetic Simulation software HFS S of ANSOFT company to carry out modeling and simulating and pass through parameter optimization, and each parameter of the antenna that finally obtains is as shown in table 1:
Table 1
| θ | 14° |
| l | 1mm |
| l1 | 4mm |
| l2 | 43.5mm |
| w | 3mm |
| w2 | 10.8mm |
| g | 0.4mm |
| fx | 0.5mm |
| fy | 5mm |
| jg | 3mm |
It is the disk of RJ that the top-loaded of antenna has radius, constitutes top-loaded disk 1, and this disk also is to make with the FR4 plate.The bottom be a ground plane, and during test, can adopt radius is that the metal dish of 300mm is simulated infinitely greatly.An endways respectively root radius 1mm and the length that links to each other with bottomland are the metal column 7 of l5 in 4 quadrants that first substrate and second substrate intersect to form, and the top of post is 1mm apart from top disk bottom surface distance, constitutes tuning post.
Divide appearance that the S parameter of antenna is measured with the vector net, and measurement result and simulation result are contrasted, find that frequency has skew (actual measurement resonance occurs in the 920MHz place) slightly.The environment of machining accuracy and measurement all might cause such deviation.Antenna-10dB bandwidth is from 0.84GHz to 1.025GHz, and relative bandwidth is about 20%, and is as shown in Figure 4.Fig. 5 is that antenna is at the E at 915MHz place face and H face directional diagram.As can be seen from the figure help to radiation characteristic at the H surface antenna; Be similar to the distortion of " 8 " word at E face directional diagram.Why left and right sides asymmetry takes place is because the mirror image effect on infinitely great conductor ground makes directional diagram lean forward.But still can find out the prototype of monopole antenna generally.
Fig. 6 is the antenna pattern result that microwave dark room is measured.
Antenna return loss figure when being 27mm, 29mm and 31mm shown in Figure 7 for the radius R J of top-loaded disk.Obviously, the big more resonance frequency of loading disc radius is more little.Again by
(the 1. middle L of formula represents monopole length, and f is an operating frequency, and ε e is an effective dielectric constant, and c is the free space light velocity) can know that resonance frequency and L are inversely proportional to.Therefore disk loads the length that makes resonance frequency move to left must only to dwindle monopole and just can keep operating frequency at 915MHz.Select RJ=29mm in order to take into account standing-wave ratio with gain simultaneously.4 tuning posts around this outside antenna play very big effect to regulating coupling.Fig. 8 has showed the S parameter when tuning post is in different length.Can see when the distance from top of tuning post load disk when nearer the resonance of antenna at the 915MHz place mate more by force good more.But precision and the ease of considering processing are got l5 and are equaled 43mm.
It is thus clear that the antenna of present embodiment is operated in the 915MHz place and has good gain and omnidirectional radiation characteristic.And this antenna structure is simple, easy to make, with low cost, and profile is very low has only 45mm, has dwindled 50% than common monopole.Day by day have much advantage today of miniaturization in radio communication.
Claims (8)
1. three-dimensional antenna; It is characterized in that: comprise orthogonal first substrate and second substrate of dividing setting equally; Said first substrate is provided with first radiating element and the coplanar waveguide structure that is positioned at first base plate bottom of del, and the triangle top corner part of said first radiating element is connected with the center conductor band one of coplanar waveguide structure; Said second substrate is provided with second radiating element of del, and first radiating element and second radiating element interconnect at the infall of first substrate and second substrate, and the triangle drift angle of first radiating element and second radiating element is identical.
2. three-dimensional antenna according to claim 1 is characterized in that: the leg-of-mutton drift angle of said first radiating element and second radiating element is 2 θ, and θ is 14 °.
3. three-dimensional antenna according to claim 1 and 2; It is characterized in that: be connected with the top-loaded disk at said first substrate and the second substrate top; The center of circle of said top-loaded disk is positioned at the infall of first substrate and second substrate, and the lower surface of top-loaded disk is a conducting surface.
4. three-dimensional antenna according to claim 3 is characterized in that: the radius of said top-loaded disk is 20～31 millimeters.
5. three-dimensional antenna according to claim 3; It is characterized in that: in four quadrants of said first substrate and second substrate intersection formation; Be respectively equipped with a vertical metal column that is provided with, have 1～3 mm clearance between said metal column upper end and top-loaded disk.
6. three-dimensional antenna according to claim 5 is characterized in that: the diameter of said metal column is 1 millimeter, and the distance of the metal column and first substrate and second substrate is 5 millimeters.
7. three-dimensional antenna according to claim 3; It is characterized in that: said first substrate and the second substrate upper edge substrate center line are respectively equipped with the rectangular through-hole that is provided with at interval; Rectangular through-hole position on first substrate and second substrate is arranged in a crossed manner, and win substrate and second substrate are fixed at substrate center line place each other.
8. three-dimensional antenna according to claim 7 is characterized in that: in the said coplanar waveguide structure, the width of center conductor band is 3 millimeters, highly is 3～15 millimeters, center conductor band and both sides conductor plate be spaced apart 0.4 millimeter; The height that the top of the del on said first substrate overlaps with the center conductor band is 2～14 millimeters; The height of first radiating element and second radiating element is 43.5 millimeters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101988902A CN102723588A (en) | 2012-06-15 | 2012-06-15 | Stereo antenna |
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| CN2012101988902A CN102723588A (en) | 2012-06-15 | 2012-06-15 | Stereo antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI831450B (en) * | 2022-11-01 | 2024-02-01 | 耀登科技股份有限公司 | Three-dimensional antenna structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6967631B1 (en) * | 2004-05-10 | 2005-11-22 | Ikmo Park | Multiple meander strip monopole antenna with broadband characteristic |
| CN1862879A (en) * | 2005-01-26 | 2006-11-15 | 内部无线公司 | Low profile antenna |
| CN201243085Y (en) * | 2008-05-12 | 2009-05-20 | 摩比天线技术（深圳）有限公司 | WIMAX dual polarization base station directional antenna |
| CN101479883A (en) * | 2006-06-30 | 2009-07-08 | 株式会社Emw天线 | Antenna with 3-D configuration |
| CN201918502U (en) * | 2010-12-07 | 2011-08-03 | 南京恩瑞特实业有限公司 | Broadband high-isolation dual-polarization antenna unit adopting strip line structure |
-
2012
- 2012-06-15 CN CN2012101988902A patent/CN102723588A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6967631B1 (en) * | 2004-05-10 | 2005-11-22 | Ikmo Park | Multiple meander strip monopole antenna with broadband characteristic |
| CN1862879A (en) * | 2005-01-26 | 2006-11-15 | 内部无线公司 | Low profile antenna |
| CN101479883A (en) * | 2006-06-30 | 2009-07-08 | 株式会社Emw天线 | Antenna with 3-D configuration |
| CN201243085Y (en) * | 2008-05-12 | 2009-05-20 | 摩比天线技术（深圳）有限公司 | WIMAX dual polarization base station directional antenna |
| CN201918502U (en) * | 2010-12-07 | 2011-08-03 | 南京恩瑞特实业有限公司 | Broadband high-isolation dual-polarization antenna unit adopting strip line structure |
Non-Patent Citations (2)
| Title |
|---|
| SEBASTIEN PALUD等: "A Novel Broadband Eight-Wave Conical Antenna", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》, vol. 56, no. 7, 31 July 2008 (2008-07-31), pages 2112 - 2116, XP011229728, DOI: doi:10.1109/TAP.2008.924775 * |
| 毕丹宏: "新型超宽带微带天线的研究与设计", 《中国优秀硕士学位论文全文数据库信息科技辑》, no. 11, 15 November 2009 (2009-11-15), pages 136 - 21 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI831450B (en) * | 2022-11-01 | 2024-02-01 | 耀登科技股份有限公司 | Three-dimensional antenna structure |
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Application publication date: 20121010 |