CN1525597A - Plane double L-type double-frequency antenna - Google Patents
Plane double L-type double-frequency antenna Download PDFInfo
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- CN1525597A CN1525597A CNA031049079A CN03104907A CN1525597A CN 1525597 A CN1525597 A CN 1525597A CN A031049079 A CNA031049079 A CN A031049079A CN 03104907 A CN03104907 A CN 03104907A CN 1525597 A CN1525597 A CN 1525597A
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- 239000000758 substrate Substances 0.000 claims description 32
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- 238000012423 maintenance Methods 0.000 claims 2
- 239000004020 conductor Substances 0.000 description 9
- 238000004891 communication Methods 0.000 description 7
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- 238000005259 measurement Methods 0.000 description 4
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Abstract
The invention is a kind of plane double-frequency L type antenna. The invention provides an antenna with short length, small volume for receiving different frequency channel signal. It includes dielectric base board, a microstrip line/coplanar wave line which uses one end as signal feed-in port on one side surface of the dielectric and the ground metal surface correspondent to the microstrip line/ coplanar wave line on the other side of the dielectric base board; the other end of the microstrip/ coplanar wave line extends to the direction out of the ground metal surface; and sets the first radiator with inverted L type along the shaft; the ground metal surface is the second radiator with inverted L type which is near to the first radiator and extends toward out of the ground metal surface.
Description
Technical field
The invention belongs to antenna, the double L-shaped dual-band antenna of particularly a kind of plane formula.
Background technology
As shown in Figure 1, employed inverted-L antenna comprises coaxial wire 10 and is sheathed on the metal ground connection flat board 18 of coaxial wire 10 1 ends on the traditional communication device.
The one end system of coaxial wire 10 is connected on the control circuit of radio communication device, with as the feed-in line, its other end and metal ground connection dull and stereotyped 18 is sheathed, and is connected with metal ground connection dull and stereotyped 18 with outer conductor 16, uses outer conductor 16 ground connection with coaxial wire 10.The other end of coaxial wire 10 is extended by inner wire 14 and is the L shape and extends to metal ground connection dull and stereotyped 18 conductor 12 outward, to have the radiant body that is the shape of falling L of certain proportion relation between the resonance frequency that forms length and antenna.This antenna generally is the single-frequency design.
As shown in Figure 2, traditionally, for making above-mentioned inverted-L antenna more compact, existing dealer is made in this kind antenna on the printed circuit board (PCB), to make the microstrip-type inverted-L antenna.
The microstrip-type inverted-L antenna has the dielectric medium substrate 27 that is printed with microstrip line 24 on the side, an end that utilizes microstrip line 24 is as signal feed side 241, the another side of dielectric medium substrate 27 then is printed with grounding metal plane 28 corresponding to the position of microstrip line 24, and makes the other end of microstrip line 24 have the radiant body that is the shape of falling L 242 that certain proportion concerns between the resonance frequency that extends length and antenna corresponding to the position beyond the grounding metal plane 28.This antenna generally also designs for single-frequency.
In addition, other has the dealer to utilize co-planar waveguide (Coplanar Wave Guide) as the feed-in line, so that this kind inverted-L antenna is made on the printed circuit board (PCB), to make co-planar waveguide formula inverted-L antenna.
As shown in Figure 3, co-planar waveguide formula inverted-L antenna has the dielectric medium substrate 37 that the side is printed with co-planar waveguide line 34, one end of co-planar waveguide line 34 is as signal feed side 341, is printed with the grounding metal plane 38 that ground roll lead 34 together keeps certain intervals at co-planar waveguide line 34 peripheral positions of dielectric medium substrate 37 side correspondences.The other end of co-planar waveguide line 34 then extends to beyond the grounding metal plane 38, to have the radiant body that is the shape of falling L 342 of certain proportion relation between the resonance frequency that forms length and antenna.This antenna generally also designs for single-frequency.
Because the mobile communication product market demand heightens, make that the development of wireless telecommunications is more quick in recent years.In numerous wireless communication standards, the most noticeable person is U.S.'s Institute of Electrical and Electronics Engineers (hereinafter to be referred as IEEE) 802.11 Wireless LANs (Wireless Local Area Network) agreement, IEEE802.11 agreement system formulates in the period of 1997, agreement not only provides many unprecedented functions in the wireless telecommunications, one solution that can make the wireless product of various different labels be communicated with each other also is provided, and the formulation of this agreement has been opened a new milestone for the development of wireless telecommunications undoubtedly.Yet, between in August, 2000, IEEE can become combination with standard between U.S.'s Institute of Electrical and Electronics Engineers (IEEE)/American National Standards Institute and International Standards Organization (ISO)/international electronic technology trade council (IEC) for making 802.11 agreements, be that it has been done further revision, two important contents have been increased in its Description of Revision, be IEEE 802.11a agreement and IEEE 802.11b agreement, regulation according to these two agreements, in the standard physical layer of expansion, its working band must be separately positioned on 500,000,000 hertz (5GHz) and 2.4 hundred million hertz (5GHz), so when radio communication product is desired to use these two kinds of wireless communication protocols simultaneously, the inverted-L antenna of aforementioned conventional promptly can't satisfy this demand, and must a plurality of antennas be installed according to the requirement on the frequency band.Yet this measure has not only increased cost of parts, installation procedure, more needs to vacate more space on radio communication product, so that these inverted-L antennas to be installed, causes the volume of radio communication product can't dwindle easily to meet compact designer trends.
Summary of the invention
The purpose of this invention is to provide a kind of different frequency range signal, length is short, volume is little double L-shaped dual-band antenna of plane formula of receiving.
The present invention includes the dielectric medium substrate, be printed on dielectric medium substrate one side with an end as the microstrip line of signal feed side and be printed on the grounding metal plane of dielectric medium substrate another side corresponding to microstrip line; The other end of microstrip line is to extending corresponding to locality beyond the grounding metal plane, and extends first radiant body that is the shape of falling L to a side by longitudinal axis; Grounding metal plane is by extending second radiant body that is the shape of falling L corresponding to the contiguous first radiant body position with external position to grounding metal plane; First and second radiant body keeps certain intervals.
Wherein:
The length of first and second radiant body equals 1/4th length of each band wavelength in the two-band approximately respectively.
Microstrip line is to being the strip that bends and extends into corresponding to locality beyond the grounding metal plane.
First and second radiant body is provided with in opposite direction and keeps certain intervals.
First and second radiant body is along the equidirectional setting and keep certain intervals.
The double L-shaped dual-band antenna of a kind of plane formula, it comprises the dielectric medium substrate and is printed on the dielectric medium substrate side surfaces with co-planar waveguide line, the grounding metal plane of an end as the signal feed side; Grounding metal plane corresponding to co-planar waveguide line peripheral position and together the ground roll lead keep certain interval; The co-planar waveguide line other end is to extending corresponding to locality beyond the grounding metal plane, and extends first radiant body that is the shape of falling L to a side by longitudinal axis; Grounding metal plane is by extending second radiant body that is the shape of falling L corresponding to the contiguous first radiant body position with external position to grounding metal plane; First and second radiant body keeps certain intervals.
The length of first and second radiant body equals 1/4th length of each band wavelength in the two-band approximately respectively.
The co-planar waveguide alignment is the strip that bends and extends into corresponding to locality beyond the grounding metal plane.
First and second radiant body is provided with in opposite direction and keeps certain intervals.
First and second radiant body is along the equidirectional setting and keep certain intervals.
Because the present invention includes the dielectric medium substrate, be printed on dielectric medium substrate one side with an end as the microstrip line/co-planar waveguide line of signal feed side and be printed on the grounding metal plane of dielectric medium substrate another side/side corresponding to microstrip line/co-planar waveguide line; The other end of microstrip line/co-planar waveguide line is to extending corresponding to locality beyond the grounding metal plane, and extends first radiant body that is the shape of falling L to a side by longitudinal axis; Grounding metal plane is by extending second radiant body that is the shape of falling L corresponding to the contiguous first radiant body position with external position to grounding metal plane; First and second radiant body keeps certain intervals.Microstrip line of the present invention/co-planar waveguide line other end is to extending into corresponding to locality beyond the grounding metal plane and being extended first radiant body that is the shape of falling L and with external position extend second radiant body that be fall L shape corresponding to being close to the first radiant body position to grounding metal plane by grounding metal plane to a side by its longitudinal axis,, use with as low, high frequency radiation body with respectively respectively in order to receive the double frequency-band signal of U.S.'s Institute of Electrical and Electronics Engineers (IEEE) 802.11a agreement and U.S.'s Institute of Electrical and Electronics Engineers (IEEE) 802.11b agreement defined.Not only can receive the different frequency range signal, and length is short, volume is little, thereby reaches purpose of the present invention.
Description of drawings
Fig. 1, be known inverted-L antenna structural representation stereogram.
Fig. 2, be known microstrip-type inverted-L antenna structural representation stereogram.
Fig. 3, be known co-planar waveguide formula inverted-L antenna structural representation stereogram.
Fig. 4, be the embodiment of the invention one structural representation stereogram.
Fig. 5, be the embodiment of the invention two structural representation stereograms.
Fig. 6, be the embodiment of the invention three structural representation stereograms.
Fig. 7, be the embodiment of the invention four structural representation stereograms.
Fig. 8, be the embodiment of the invention five structural representation stereograms.
Fig. 9, be the actual result schematic diagrams that measure of the embodiment of the invention two.
Figure 10, be the actual result schematic diagram that measures of the embodiment of the invention one.
Embodiment
Embodiment one
As shown in Figure 4, the present invention includes dielectric medium substrate 47, be printed on dielectric medium substrate 47 1 sides with an end as the microstrip line 44 of signal feed side 441 and be printed on the grounding metal plane 48 of dielectric medium substrate 47 another sides corresponding to microstrip line 44.
The other end of microstrip line 44 is to extending straight into strip corresponding to locality beyond the grounding metal plane 48, and extends first radiant body 442 that is the shape of falling L to a side by its longitudinal axis.
Because first and second radiant body 442,481 of the present invention is respectively in order to receive the signal of different frequency range, so the length of first and second radiant body 442,481 should have certain proportionate relationship respectively and between the different resonant frequencies of antenna desire design.
The length of first and second radiant body 442,481 of the present invention is the best with 1/4th length of each band wavelength in the two-band that equals institute's desire design approximately respectively.The first wherein long radiant body 442 is as the low frequency radiation body; The second short radiant body 481 is as the high frequency radiation body.So first and second radiant body 442,481 with different length can be respectively in order to receive the double frequency-band signal of IEEE 802.11a agreement and IEEE 802.11b agreement defined.
As shown in figure 10, the present invention operate in 24～2,500,000,000 hertz (2.4～2.5GHz) and 52.5～58.5 hundred million hertz (during 5.25～5.85GHz) two frequency ranges, the measurement of surveying its return loss (Return Loss) is:
Hundred million hertz of Δ 1:24 (2.4GHz);-15.076 decibels (dB);
Hundred million hertz of Δ 2:25 (2.5GHz);-19.642 decibels (dB);
Hundred million hertz of Δ 3:52.5 (5.25GHz);-10.254 decibels (dB);
Hundred million hertz of Δ 4:58.5 (5.85GHz);-11.199 decibels (dB);
Promptly all be better than 10 decibels (dB).Therefore, show that the double L-shaped dual-band antenna of plane formula of the present invention really can be respectively in order to receive the double frequency-band signal of IEEE 802.11a agreement and IEEE 802.11b agreement defined by these measurements.
Embodiment two
As shown in Figure 5, the present invention includes dielectric medium substrate 57 and be printed on dielectric medium substrate 57 sides with the co-planar waveguide line 54 and the grounding metal plane 58 of an end as signal feed side 541.
Grounding metal plane 58 corresponding to co-planar waveguide line 54 peripheral positions and together ground roll lead 54 keep certain interval.
The other end of co-planar waveguide line 54 is to extending straight into strip corresponding to locality beyond the grounding metal plane 58, and extends first radiant body 542 that is the shape of falling L to a side by its longitudinal axis.
Grounding metal plane 58 is by extending second radiant body 581 that is the shape of falling L corresponding to contiguous first radiant body 542 positions with external position to grounding metal plane 58.First and second radiant body 542,581 is along the equidirectional setting and keep certain intervals, to form the double L-shaped dual-band antenna of plane formula of the signal that can receive different frequency range.
Co-planar waveguide line 54 of the present invention, first radiant body 542, second radiant body 581 and grounding metal plane 58 print that to be about 0.8mm and dielectric coefficient to thickness be the double L-shaped dual-band antenna of plane formula that goes out with actual fabrication on 4.3～4.7 the tabular dielectric medium substrate 57, and the width of its co-planar waveguide line 54, first radiant body 542 and second radiant body 581 is about 1mm; The length of first radiant body 542 is about 23mm; The length of second radiant body 581 is about 12mm.
As shown in Figure 9, the present invention operate in 23.5881～32.5241 hundred million hertz (2.35881～3.25241GHz) and 49.7438～55.0920 hundred million hertz (during 4.97438～5.50920GHz) two frequency ranges, the measurement of surveying its return loss (Return Loss) is:
Hundred million hertz of Δ 1:55.0920 (5.50920GHz);-9.9800 decibels (dB);
Hundred million hertz of Δ 2:49.7438 (4.97438GHz);-9.7437 decibels (dB);
Hundred million hertz of Δ 3:23.5881 (2.35881GHz);-9.8274 decibels (dB);
Hundred million hertz of Δ 4:32.5241 (3.25241GHz);-10.060 decibels (dB);
Hundred million hertz of Δ 5:52.5000 (5.25000GHz);-20.692 decibels (dB);
Promptly all be better than 9 decibels (dB).Therefore, show that the double L-shaped dual-band antenna of plane formula of the present invention really can be respectively in order to receive the double frequency-band signal of IEEE 802.11a agreement and IEEE 802.11b agreement defined by these measurements.
Among the present invention because first and second radiant body 542,581 is respectively in order to receiving the signal of different frequency range, so the length of first and second radiant body 542,581 should be respectively and the different resonant frequencies that designs of antenna desire between have certain proportionate relationship.The length of first and second radiant body 542,581 of the present invention is the best with 1/4th length of each band wavelength in the two-band that equals institute's desire design approximately respectively.The first wherein long radiant body 542 is as the low frequency radiation body; The second short radiant body 581 is as the high frequency radiation body.So, first and second radiant body 542,581 of different length can be respectively in order to receive the double frequency-band signal of IEEE 802.11a agreement and IEEE802.11b agreement defined.
Embodiment three
As shown in Figure 6, the present invention includes dielectric medium substrate 67 and be printed on dielectric medium substrate 67 sides with the co-planar waveguide line 64 and the grounding metal plane 68 of an end as signal feed side 641.
Grounding metal plane 68 corresponding to co-planar waveguide line 64 peripheral positions and together ground roll lead 64 keep certain interval.
The other end of co-planar waveguide line 64 bends and extends into strip to being the L type corresponding to locality beyond the grounding metal plane 68, and extends first radiant body 642 that is the shape of falling L to a side by its longitudinal axis.
Grounding metal plane 68 is by extending second radiant body 681 that is the shape of falling L corresponding to contiguous first radiant body 642 positions with external position to grounding metal plane 68.First and second radiant body 642,681 is along the equidirectional setting and keep certain intervals, to form the double L-shaped dual-band antenna of plane formula of the signal that can receive different frequency range.
Embodiment four
As shown in Figure 7, the present invention includes dielectric medium substrate 77, be printed on dielectric medium substrate 77 1 sides with an end as the microstrip line 74 of signal feed side 741 and be printed on the grounding metal plane 78 of dielectric medium substrate 77 another sides corresponding to microstrip line 74.
The other end of microstrip line 74 bends and extends into strip to being the L type corresponding to locality beyond the grounding metal plane 78, and extends first radiant body 742 that is the shape of falling L to a side by its longitudinal axis.
Grounding metal plane 78 is by extending second radiant body 781 that is the shape of falling L corresponding to contiguous first radiant body 742 positions with external position to grounding metal plane 78.First and second radiant body 742,481 is along the equidirectional setting and keep certain intervals, to form the double L-shaped dual-band antenna of plane formula of the signal that can receive different frequency range.
Embodiment five
As shown in Figure 8, the present invention includes dielectric medium substrate 87 and be printed on dielectric medium substrate 87 sides with the co-planar waveguide line 84 and the grounding metal plane 88 of an end as signal feed side 841.
Grounding metal plane 88 corresponding to co-planar waveguide line 84 peripheral positions and together ground roll lead 84 keep certain interval.
The other end of co-planar waveguide line 84 bends and extends into strip to being the L type corresponding to locality beyond the grounding metal plane 88, and extends first radiant body 842 that is the shape of falling L to a side by its longitudinal axis.
Grounding metal plane 88 is by extending second radiant body 881 that is the shape of falling L corresponding to contiguous first radiant body 842 positions with external position to grounding metal plane 88.First and second radiant body 842,881 is provided with in opposite direction and keeps certain intervals, to form the double L-shaped dual-band antenna of plane formula of the signal that can receive different frequency range.
Claims (10)
1, the double L-shaped dual-band antenna of a kind of plane formula, it comprises the dielectric medium substrate, be printed on dielectric medium substrate one side with an end as the microstrip line of signal feed side and be printed on the grounding metal plane of dielectric medium substrate another side corresponding to microstrip line; The other end of microstrip line is to extending corresponding to locality beyond the grounding metal plane; It is characterized in that the described other end by microstrip line extends first radiant body that is the shape of falling L to the longitudinal axis that extends corresponding to locality beyond the grounding metal plane to a side; Grounding metal plane is by extending second radiant body that is the shape of falling L corresponding to the contiguous first radiant body position with external position to grounding metal plane; First and second radiant body keeps certain intervals.
2, the double L-shaped dual-band antenna of plane formula according to claim 1 is characterized in that the length of described first and second radiant body equals 1/4th length of each band wavelength in the two-band approximately respectively.
3, the double L-shaped dual-band antenna of plane formula according to claim 1 is characterized in that described microstrip line is to being the strip that bends and extends into corresponding to locality beyond the grounding metal plane.
4, the double L-shaped dual-band antenna of plane formula according to claim 1 is characterized in that described first and second radiant body is provided with in opposite direction and keeps certain intervals.
5, the double L-shaped dual-band antenna of plane formula according to claim 1 is characterized in that described first and second radiant body is along equidirectional setting and maintenance certain intervals.
6, the double L-shaped dual-band antenna of a kind of plane formula, it comprises the dielectric medium substrate and is printed on the dielectric medium substrate side surfaces with co-planar waveguide line, the grounding metal plane of an end as the signal feed side; Grounding metal plane corresponding to co-planar waveguide line peripheral position and together the ground roll lead keep certain interval; The co-planar waveguide line other end is to extending corresponding to locality beyond the grounding metal plane; It is characterized in that the described other end by the co-planar waveguide line extends first radiant body that is the shape of falling L to the longitudinal axis that extends corresponding to locality beyond the grounding metal plane to a side; Grounding metal plane is by extending second radiant body that is the shape of falling L corresponding to the contiguous first radiant body position with external position to grounding metal plane; First and second radiant body keeps certain intervals.
7, the double L-shaped dual-band antenna of plane formula according to claim 6 is characterized in that the length of described first and second radiant body equals 1/4th length of each band wavelength in the two-band approximately respectively.
8, the double L-shaped dual-band antenna of plane formula according to claim 6 is characterized in that described co-planar waveguide alignment is the strip that bends and extends into corresponding to locality beyond the grounding metal plane.
9, the double L-shaped dual-band antenna of plane formula according to claim 6 is characterized in that described first and second radiant body is provided with in opposite direction and keeps certain intervals.
10, the double L-shaped dual-band antenna of plane formula according to claim 6 is characterized in that described first and second radiant body is along equidirectional setting and maintenance certain intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031049079A CN100379083C (en) | 2003-02-28 | 2003-02-28 | Plane double L-type double-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031049079A CN100379083C (en) | 2003-02-28 | 2003-02-28 | Plane double L-type double-frequency antenna |
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| Publication Number | Publication Date |
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| CN1525597A true CN1525597A (en) | 2004-09-01 |
| CN100379083C CN100379083C (en) | 2008-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031049079A Expired - Fee Related CN100379083C (en) | 2003-02-28 | 2003-02-28 | Plane double L-type double-frequency antenna |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101005291B (en) * | 2007-01-19 | 2010-05-19 | 清华大学 | Double frequency plane two antenna system for mobile terminal |
| CN102142603A (en) * | 2010-01-29 | 2011-08-03 | 奇胜澳大利亚有限公司 | Dipole antenna |
| CN106558765A (en) * | 2015-09-25 | 2017-04-05 | 英特尔公司 | Waveguide antenna configurations |
| WO2018107965A1 (en) * | 2016-12-14 | 2018-06-21 | 深圳市道通智能航空技术有限公司 | Dual-frequency-band micro-strip antenna and unmanned aerial vehicle using same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4746925A (en) * | 1985-07-31 | 1988-05-24 | Toyota Jidosha Kabushiki Kaisha | Shielded dipole glass antenna with coaxial feed |
| CA2200675C (en) * | 1997-03-21 | 2003-12-23 | Chen Wu | A printed antenna structure for wireless data communications |
| AU2772999A (en) * | 1998-02-23 | 1999-09-06 | Qualcomm Incorporated | Uniplanar dual strip antenna |
-
2003
- 2003-02-28 CN CNB031049079A patent/CN100379083C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101005291B (en) * | 2007-01-19 | 2010-05-19 | 清华大学 | Double frequency plane two antenna system for mobile terminal |
| CN102142603A (en) * | 2010-01-29 | 2011-08-03 | 奇胜澳大利亚有限公司 | Dipole antenna |
| WO2011091763A1 (en) * | 2010-01-29 | 2011-08-04 | Clipsal Australia Pty Limited | Dipole antenna |
| CN102859792A (en) * | 2010-01-29 | 2013-01-02 | 奇胜澳大利亚有限公司 | Dipole antenna |
| CN106558765A (en) * | 2015-09-25 | 2017-04-05 | 英特尔公司 | Waveguide antenna configurations |
| US10840608B2 (en) | 2015-09-25 | 2020-11-17 | Intel Corporation | Waveguide antenna structure |
| WO2018107965A1 (en) * | 2016-12-14 | 2018-06-21 | 深圳市道通智能航空技术有限公司 | Dual-frequency-band micro-strip antenna and unmanned aerial vehicle using same |
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| Publication number | Publication date |
|---|---|
| CN100379083C (en) | 2008-04-02 |
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