CN1855625A - Planar monopole antenna - Google Patents
Planar monopole antenna Download PDFInfo
- Publication number
- CN1855625A CN1855625A CN 200510067238 CN200510067238A CN1855625A CN 1855625 A CN1855625 A CN 1855625A CN 200510067238 CN200510067238 CN 200510067238 CN 200510067238 A CN200510067238 A CN 200510067238A CN 1855625 A CN1855625 A CN 1855625A
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- China
- Prior art keywords
- shape structure
- monopole antenna
- length
- radiant body
- planar monopole
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/40—Element having extended radiating surface
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/32—Vertical arrangement of element
- H01Q9/36—Vertical arrangement of element with top loading
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- Details Of Aerials (AREA)
Abstract
A planar monopole antenna comprises: a baseboard, a ground metal, a first sleeve like structure, a second sleeve like structure and a radiator. Said ground metal is formed in said baseboard, and said first and second sleeve like structures are connected to the ground metal, and are extended from one side edge of said ground metal to a first direction. In the first direction, said first and second sleeve like structures respectively have a first and a second length, and said side edge has a third length. Said radiator is formed on said baseboard and is located between said first and second structures. Said radiator shows a strip -like shape, and in the first direction has a fourth length equaling the sum of said first, second and third lengths.
Description
Technical field
The present invention relates to a kind of planar monopole antenna, particularly a kind of planar monopole antenna with sleeve shape structure (sleeve).
Background technology
Trend along with exhibition of breaking out of meeting of wireless telecommunications and communication product miniature, therefore some embedded miniature antennas arise at the historic moment, and more general at present employed miniature antenna has antenna component (chipantenna) and planar antenna (planar antenna) or the like.Generally speaking, the antenna of these types all has the little characteristics of volume, the antenna of ceramic core (ceramic chip antenna) of wherein common antenna component as adopting common burning porcelain technology (LTCC) to make, and the planar antenna design also has a lot, microstrip antenna (microstripe antenna) for example, printing type aerial (printed antenna) and planar inverted F-shape antenna (Planar Inverted F Antenna, PIFA) or the like, these antenna widely is applied to GSM, DCS, UMTS, wireless terminal device such as WLAN and blue bud, for example mobile phone, wireless local area network card or the like.
At first seeing also Fig. 1, is example with an existing planar monopole antenna (planar monopole antenna), and it mainly is made up of a substrate S, a grounded metal G, a radiant body R and a cable W.Above-mentioned grounded metal G and radiant body R are arranged on the surperficial S1 of substrate S, and wherein radiant body R is elongated and extend towards Y direction.
Generally speaking, aforementioned cable W is a coaxial cable, and it has the earth connection W2 that a holding wire W1 and is coated on holding wire W1 periphery.As shown in Figure 1, have a feed side RF below radiant body R, above-mentioned feed side RF is adjacent to the side of aforementioned grounded metal G, and is connected with the holding wire W1 of cable W central authorities, and grounded metal G then is connected with the earth connection W2 that is surrounded on holding wire W1 periphery in addition.
At generally (Digital VideoBroadcasting, DVB), the frequency range coverage rate of traditional planar monopole antenna is lower than 30% mostly, so the transmission of its antenna and reception are unsatisfactory about the digital video broadcasting of 460～860MHz.
In view of this, frequency range beginning of how to improve conventional planar formula unipole antenna becomes an important topic.
Summary of the invention
Because the shortcoming of aforementioned existing planar antenna structure, the present invention proposes a kind of planar monopole antenna, be applicable to transmission of wireless signals over a range of frequencies, comprise a substrate, a grounded metal, one first sleeve shape structure (sleeve), one second a sleeve shape structure and a radiant body.Aforementioned grounded metal is formed on the substrate, and first, second sleeve shape structure is electrically connected with grounded metal, and is extended towards a first direction by a side of grounded metal.First, second sleeve shape structure has first, second length respectively on first direction, aforementioned in addition side has one the 3rd length.Aforementioned radiant body is formed on the substrate and between first, second sleeve shape structure, radiant body is strip and has one the 4th length on first direction, and wherein the 4th length is substantially equal to the summation of first, second, third length.
One of therein among the embodiment, aforementioned grounded metal, first, second sleeve shape structure and radiant body all are formed on the surface of substrate.
Among the embodiment therein, distance equals the spacing of the radiant body and the second sleeve shape structure between the aforementioned radiant body and the first sleeve shape structure.
Among the embodiment therein, aforementioned first, second sleeve shape structure is perpendicular to aforementioned side.
Among the embodiment therein, aforementioned the 4th length is substantially equal to 1/4th of this wireless signal wavelength.
Among the embodiment therein, aforementioned first length is substantially equal to second length.
Among the embodiment therein, aforesaid base plate is a FR4 substrate (Flame Retardant Type 4), and aforementioned grounded metal, first, second sleeve shape structure and radiant body are that production method with printed circuit is formed on the surface of substrate.
Among the embodiment therein, aforementioned planar monopole antenna also comprises a cable, and above-mentioned cable has a holding wire and an earth connection, and radiant body has a feed side, the contiguous aforementioned side in above-mentioned feed side, wherein grounded metal is connected with earth connection, and the feed side connects holding wire.
In the foregoing planar monopole antenna, above-mentioned cable is a coaxial cable, and wherein earth connection is coated on the holding wire periphery.
The present invention proposes a kind of planar monopole antenna, is applicable to the transmission of wireless signals in a scope, comprises a substrate, a grounded metal, one first sleeve shape structure, one second a sleeve shape structure and a radiant body.Above-mentioned grounded metal is formed on the substrate, and first, second sleeve shape structure is electrically connected with grounded metal, and is extended towards a first direction by a side of grounded metal.First, second sleeve shape structure has first, second length respectively on first direction, aforementioned in addition side has one the 3rd length.Aforementioned radiant body is formed on the substrate and at first, second and tucks inside the sleeve between shape structure, and radiant body has the kink of a primary radiation portion and two symmetries, above-mentioned kink is L-shaped substantially, is connected in an end of primary radiation portion and roughly towards the reverse extension of first direction.In particular, aforementioned radiant body and one of them person of kink length sum total be substantially equal to aforementioned first, second, third length summation.
One of therein among the embodiment, aforementioned kink has dentalation.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, detailed embodiment cited below particularly also cooperates appended graphic elaborating.
Description of drawings
Fig. 1 is the schematic diagram of existing planar monopole antenna;
Fig. 2 is a planar monopole antenna schematic diagram of the present invention;
Fig. 3 is voltage standing wave ratio (VSWR) schematic diagram that conventional planar formula unipole antenna and the present invention's planar monopole antenna is presented in frequency 400～900MHz scope;
Fig. 4 is the schematic diagram of another embodiment of planar monopole antenna of the present invention; And
Fig. 5 is the schematic diagram of dentation for kink in the planar monopole antenna of the present invention.
Embodiment
See also Fig. 2, the figure shows planar monopole antenna schematic diagram of the present invention.As shown in the figure, planar monopole antenna of the present invention can be at the transmission of wireless signals in the particular frequency range, it mainly comprises a substrate S, a grounded metal G, one first sleeve shape structure (sleeve) G1, one second sleeve shape structure G2, a radiant body R and a cable W, above-mentioned grounded metal G and radiant body R are formed on the surperficial S1 of substrate S, wherein radiant body R is elongated and extend towards a first direction (Y direction), and a feed side RF who is positioned at radiant body R below in addition then is adjacent to the side G ' of grounded metal G.In the present embodiment, aforementioned cable W is a coaxial cable, comprises a holding wire W1 and an earth connection W2, and above-mentioned earth connection W2 is coated on holding wire W1 periphery, wherein holding wire W1 connects the feed side RF of radiant body R below, and earth connection W2 then is connected with grounded metal G.
As shown in Figure 2, aforementioned first, second sleeve shape structure G1, G2 are set in parallel on the surperficial S1, and extend towards first direction (Y direction) respectively by side G ' two ends respectively, wherein the first sleeve shape structure G1 has one first length L 1 on Y direction, and the second sleeve shape structure G2 has one second length L 2 on Y direction, the length of aforementioned first, second sleeve shape structure G1, G2 about equally, that is first length L 1 is substantially equal to second length L 2.In particular, aforesaid base plate S can be a FR4 substrate (Flame Retardant Type 4), aforementioned in addition first, second sleeve shape structure G1, G2 are metal material, and integrally formed with grounded metal G, it can be formed on by the production method of printed circuit (Printed Circuit) on the S1 of aforesaid base plate S surface.
In Fig. 2, aforementioned side G ' is perpendicular to Y direction and have one the 3rd length L 3 (that is distance of first, second sleeve shape structure G1, G2), equals the spacing d of the radiant body R and the second sleeve shape structure G2 in addition between the radiant body R and the first sleeve shape structure G1 apart from d.In particular, aforementioned radiant body R has one the 4th length L 4 on Y direction, be substantially equal to 1/4th of wireless signal wavelength, and is substantially equal to the summation of first, second, third length L 1, L2, L3, that is L4=L1+L2+L3.Thus, the present invention can and tuck inside the sleeve by radiant body R and produce the electric capacity reciprocation between shape structure G1, the G2, and then can have bigger frequency range by more traditional planar monopole antenna.
Then see also Fig. 3, the figure shows voltage standing wave ratio (Voltage StandingWave Ratio, VSWR) schematic diagram that conventional planar formula unipole antenna and planar monopole antenna of the present invention are presented in frequency 400～900MHz scope.As shown in the figure, the voltage standing wave ratio (VSWR) that curve 31 expressions planar monopole antenna is as shown in Figure 1 presented in frequency 400～900MHz scope changes situation, and conventional planar formula unipole antenna wherein shown in Figure 1 does not have sleeve shape structure; In addition, the voltage standing wave ratio (VSWR) that 32 of curves expression planar monopole antennas of the present invention (as shown in Figure 2) are presented in frequency 400～900MHz scope changes situation, L1=L2=65mm wherein, L3=12mm, L4=140mm.
Generally speaking in the existing standard standard in the industry cycle, the voltage standing wave ratio of planar monopole antenna (VSWR) must be less than 3 requirements that can satisfy on the performance, therefore can find by the shown test result of Fig. 3, planar monopole antenna of the present invention can be significantly with frequency range (that is VSWR is lower than the ratio of 3 the whole relatively frequency band 400～900MHz of frequency range) by about 25% being increased to about 90% originally.
Then see also Fig. 4, the figure shows the schematic diagram of another embodiment among the present invention, radiant body R ' in the present embodiment mainly the change by geometry to reach the purpose of minification.As shown in the figure, above-mentioned radiant body R ' mainly comprises kink R2, the R3 of a R1 of primary radiation portion and two symmetries, and wherein kink R2, R3 are roughly L-shaped.In particular, the R1 of primary radiation portion adds that the total length of arbitrary kink R2 (or kink R3) is substantially equal to the summation of aforementioned first, second, third length L 1, L2, L3, and be substantially equal to 1/4th of wireless signal wavelength, by producing the electric capacity reciprocation between radiant body R ' and sleeve shape structure G1, the G2, so can improve the frequency range of antenna effectively.
In the present embodiment, because aforementioned kink R2, R3 are by the R1 of primary radiation portion end lateral bending song outwardly, and the reverse extension of past first direction (Y direction), thus when the total length of first, second, third length L 1, L2, L3 remains unchanged, radiant body R ' can have less length L 4 ' and then can reach the purpose of minification on Y direction, wherein the length L 4 ' among Fig. 4 is less than the 4th length L 4 among Fig. 2.
As shown in Figure 5, in order more effectively to utilize the space on the S1 of substrate S surface, aforementioned kink R2, R3 have dentalation, can increase kink R2, R3 length in order to form dentalation, and then can reduce radiant body R ' in the required length of Y direction.As previously mentioned, the R1 of primary radiation portion adds that the total length of arbitrary kink R2 (or kink R3) is the summation that must be substantially equal to aforementioned first, second, third length L 1, L2, L3, and be substantially equal to 1/4th of wireless signal wavelength, owing to can produce the electric capacity reciprocation between radiant body R ' and sleeve shape structure G1, the G2, therefore can improve the frequency range of antenna effectively.As can be seen, when the total length of first, second, third length L 1, L2, L3 was constant, the length of radiant body on Y direction can optionally bend and reach the purpose of minification, wherein L4 under being compared by Fig. 2, Fig. 4, Fig. 5 "＜L4 '＜L4.
In sum, the present invention mainly is the sleeve shape structure that forms two symmetries on planar monopole antenna, and can make by the production method of printed circuit and produce the electric capacity reciprocation between radiant body (radiator) and the sleeve shape structure, in order to reach the effect that improves frequency range, also can optionally change the geometry and then the minification of radiant body in addition.Because the present invention is compared to traditional planar antenna and can increases frequency range effectively, therefore can be widely used in the middle of various digital video broadcasting (DVB) devices (for example Digital Television).
Though disclosed the present invention with detailed embodiment; yet it is not in order to limiting scope of the present invention, anyly is familiar with this operator, without departing from the spirit and scope of the present invention; can do some change and retouching, so protection scope of the present invention should be with being as the criterion that claim was defined.
Claims (20)
1. a planar monopole antenna is applicable to transmission one wireless signal, comprising:
One substrate:
One grounded metal;
One first sleeve shape structure (sleeve) is formed on this substrate and is electrically connected this grounded metal, and wherein this first sleeve shape structure is that a side by this grounded metal extends towards a first direction, and has one first length on this first direction;
One second sleeve shape structure is formed on this substrate and is electrically connected this grounded metal, and wherein this second sleeve shape structure is to be extended towards this first direction by the two ends of this side, and has one second length on this first direction, and this side has one the 3rd length in addition; One radiant body is formed on this substrate and this first, second and tucks inside the sleeve between the shape structure, and this radiant body is strip, and has one the 4th length on this first direction, and wherein the 4th length is substantially equal to the summation of this first, second, third length; And
One cable couples this radiant body, uses this wireless signal of conduction.
2. planar monopole antenna as claimed in claim 1, wherein this grounded metal, this first, second sleeve shape structure and this radiant body all are formed on the surface of this substrate.
3. planar monopole antenna as claimed in claim 1, wherein between this radiant body and this first sleeve shape structure apart from equaling this radiant body and this second spacing of tucking inside the sleeve the shape structure.
4. planar monopole antenna as claimed in claim 1, wherein first, second sleeve shape structure is perpendicular to this side.
5. planar monopole antenna as claimed in claim 1, wherein the 4th length is substantially equal to 1/4th of this wireless signal wavelength.
6. planar monopole antenna as claimed in claim 1, wherein this first length is substantially equal to this second length.
7. planar monopole antenna as claimed in claim 1, wherein this substrate is a FR4 substrate (Flame Retardant Type 4).
8. planar monopole antenna as claimed in claim 1, wherein this grounded metal, this first, second sleeve shape structure and this radiant body are that production method with printed circuit is formed on the surface of this substrate.
9. planar monopole antenna as claimed in claim 1, wherein this cable also has a holding wire and an earth connection, and this radiant body has a feed side, contiguous this side in this feed side, wherein this grounded metal connects this earth connection, and this feed side connects this holding wire.
10. planar monopole antenna as claimed in claim 8, wherein this cable is a coaxial cable, and this earth connection is coated on this holding wire periphery.
11. a planar monopole antenna is applicable to transmission one wireless signal, comprising:
One substrate:
One grounded metal;
One first sleeve shape structure (sleeve) is formed on this substrate and is electrically connected this grounded metal, and wherein this first sleeve shape structure is that a side by this grounded metal extends towards a first direction, and has one first length on this first direction;
One second sleeve shape structure is formed on this substrate and is electrically connected this grounded metal, and wherein this second sleeve shape structure is to be extended towards this first direction by the two ends of this side, and has one second length on this first direction, and this side has one the 3rd length in addition;
One radiant body, be formed on this substrate and and tuck inside the sleeve between the shape structure this first, second, this radiant body has the kink of a primary radiation portion and two symmetries, this each kink is L-shaped substantially, an end that is connected in primary radiation portion is also roughly towards the reverse extension of this first direction, and wherein this radiant body and this each one of them person's of kink length sum total is substantially equal to this length summation of first, second, third; And
One cable couples this radiant body, in order to conduct this wireless signal.
12. planar monopole antenna as claimed in claim 11, wherein this kink has dentalation.
13. planar monopole antenna as claimed in claim 11, wherein this grounded metal, this first, second sleeve shape structure and this radiant body all are formed on the surface of this substrate.
14. planar monopole antenna as claimed in claim 11, wherein the spacing of this radiant body and this first sleeve shape structure equals the spacing of this radiant body and this second sleeve shape structure.
15. planar monopole antenna as claimed in claim 11, wherein first, second sleeve shape structure is perpendicular to this side.
16. planar monopole antenna as claimed in claim 11, wherein the 4th length is substantially equal to 1/4th of this wireless signal wavelength.
17. planar monopole antenna as claimed in claim 11, wherein this first length is substantially equal to this second length.
18. planar monopole antenna as claimed in claim 11, wherein this substrate is a FR4 substrate (Flame Retardant Type 4).
19. planar monopole antenna as claimed in claim 18, wherein this grounded metal, this first, second sleeve shape structure and this radiant body are that production method with printed circuit is formed on the surface of this substrate.
20. planar monopole antenna as claimed in claim 11, wherein this cable also has a holding wire and an earth connection, and this radiant body has a feed side, contiguous this side in this feed side, wherein this grounded metal connects this earth connection, and this feed side connects this holding wire.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510067238 CN1855625A (en) | 2005-04-20 | 2005-04-20 | Planar monopole antenna |
| DE200660005413 DE602006005413D1 (en) | 2005-04-20 | 2006-04-04 | Planar monopole antennas |
| EP20060007137 EP1717902B1 (en) | 2005-04-20 | 2006-04-04 | Planar monopole antennas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510067238 CN1855625A (en) | 2005-04-20 | 2005-04-20 | Planar monopole antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1855625A true CN1855625A (en) | 2006-11-01 |
Family
ID=36406024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510067238 Pending CN1855625A (en) | 2005-04-20 | 2005-04-20 | Planar monopole antenna |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1717902B1 (en) |
| CN (1) | CN1855625A (en) |
| DE (1) | DE602006005413D1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8405555B2 (en) | 2008-10-09 | 2013-03-26 | Wistron Neweb Corp. | Embedded UWB antenna and portable device having the same |
| CN103545605A (en) * | 2012-07-12 | 2014-01-29 | 智易科技股份有限公司 | Broadband monopole antenna and electronic device |
| CN103887603A (en) * | 2014-03-26 | 2014-06-25 | 广东泰阳通信设备有限公司 | Minimized monopole antenna |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2928037B1 (en) * | 2008-02-21 | 2010-03-26 | Composants Electr Soc D | ANTENNA FOR MOTOR VEHICLES, ESPECIALLY FOR THE RECEPTION OF TERRESTRIAL AND / OR SATELLITE RADIO SIGNALS. |
| US9252486B2 (en) | 2011-02-08 | 2016-02-02 | Taoglas Group Holdings | Dual-band series-aligned complementary double-V antenna, method of manufacture and kits therefor |
| TWI508378B (en) * | 2012-07-04 | 2015-11-11 | Arcadyan Technology Corp | Wide band monopole antenna and electrical device |
| DE102014210738A1 (en) * | 2014-06-05 | 2015-12-17 | Te Connectivity Germany Gmbh | ANTENNA ARRANGEMENT WITH ANTENNA UNIT AND CONNECTOR UNIT AND MANUFACTURING PROCESS |
| SE541070C2 (en) | 2017-09-28 | 2019-03-26 | Shortlink Resources Ab | Broadband antenna |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19707535A1 (en) * | 1997-02-25 | 1998-08-27 | Rothe Lutz Dr Ing Habil | Foil emitter |
| GB2323476B (en) * | 1997-03-20 | 2002-01-16 | David Ganeshmoorthy | Communication antenna and equipment |
| US6559809B1 (en) * | 2001-11-29 | 2003-05-06 | Qualcomm Incorporated | Planar antenna for wireless communications |
| EP1469554A1 (en) * | 2003-04-15 | 2004-10-20 | Hewlett-Packard Development Company, L.P. | Dual-access monopole antenna assembly |
| WO2004102742A1 (en) * | 2003-05-16 | 2004-11-25 | Wilhelm Sihn Jr. Gmbh & Co. Kg | Multiband antenna |
-
2005
- 2005-04-20 CN CN 200510067238 patent/CN1855625A/en active Pending
-
2006
- 2006-04-04 DE DE200660005413 patent/DE602006005413D1/en active Active
- 2006-04-04 EP EP20060007137 patent/EP1717902B1/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8405555B2 (en) | 2008-10-09 | 2013-03-26 | Wistron Neweb Corp. | Embedded UWB antenna and portable device having the same |
| CN103545605A (en) * | 2012-07-12 | 2014-01-29 | 智易科技股份有限公司 | Broadband monopole antenna and electronic device |
| CN103545605B (en) * | 2012-07-12 | 2016-09-28 | 智易科技股份有限公司 | Broadband monopole antenna and electronic installation |
| CN103887603A (en) * | 2014-03-26 | 2014-06-25 | 广东泰阳通信设备有限公司 | Minimized monopole antenna |
| CN103887603B (en) * | 2014-03-26 | 2016-06-29 | 广州泽歌通信科技有限公司 | A kind of miniaturization monopole antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1717902B1 (en) | 2009-03-04 |
| EP1717902A1 (en) | 2006-11-02 |
| DE602006005413D1 (en) | 2009-04-16 |
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Application publication date: 20061101 |