CN101110496B - Wideband antenna - Google Patents
Wideband antenna Download PDFInfo
- Publication number
- CN101110496B CN101110496B CN2006101059493A CN200610105949A CN101110496B CN 101110496 B CN101110496 B CN 101110496B CN 2006101059493 A CN2006101059493 A CN 2006101059493A CN 200610105949 A CN200610105949 A CN 200610105949A CN 101110496 B CN101110496 B CN 101110496B
- Authority
- CN
- China
- Prior art keywords
- radiation conductor
- antenna
- wide
- sub
- load point
- Prior art date
- 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.)
- Active
Links
- 239000004020 conductor Substances 0.000 claims abstract description 60
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 230000005855 radiation Effects 0.000 claims description 35
- 238000000926 separation method Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical group O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 claims description 2
- 230000002285 radioactive effect Effects 0.000 abstract 7
- 238000005192 partition Methods 0.000 abstract 4
- 238000005259 measurement Methods 0.000 description 5
- 230000004087 circulation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Images
Landscapes
- Details Of Aerials (AREA)
Abstract
A broadband antenna comprises a dielectric substrate, a radioactive conductor and a partition slot. Wherein, the radioactive conductor is positioned on the dielectric substrate and provided with a first side and a second side. The first side is adjacent to the second side. The first side is longer than the second side. In addition, the second side is provided with a first feed-in point and a second feed-in point. A first end opening of the partition slot is positioned on the first side. A second end opening of the partition slot is arranged on the second side. The partition slot divides the radioactive conductor into a first radioactive conductor and a second radioactive conductor. The first feed-in point is positioned in the first radioactive conductor and the second feed-in point is arranged into the radioactive conductor.
Description
Technical field
The present invention relates to a kind of wide frequency antenna, and be particularly related to a kind of wide frequency antenna that utilizes the feed-in of dipole antenna side with the raising antenna bandwidth.
Background technology
Along with the evolution of technology is more next urgent to the demand of wide frequency antenna, be example with the DTV, along with formally starting broadcasting of DTV, as long as by Portable TV commodity such as (portable TV), can watch DTV easily now.DTV is to be the television system of digital signal with TV signal by analog signal conversion, and Taiwan is DVB-T (the Digital Video Broadcasting-Terrestrial) system that adopts Europe to be formulated at present.The modulation of DVB-T system (COFDM) standard signal can solve the problem that multi-path (multi-path) disturbs effectively; Europe rule system can constitute single-frequency radio network (SingleFrequency Network simultaneously; SFN) to increase the available spectrum resource; And Europe rule system has more the characteristic that move to receive (mobile reception), still can teleview during up to 130 kilometers in the speed of a motor vehicle.
For instance, early stage in order to improve the mobile receptivity of the DVB-T receiver that is installed on the vehicle, derive advanced channel estimation and utilize double antenna to receive and remake the branch set and wait technologically, so must pay higher complexity, hardware cost and power consumption.Common on the market now conventional digital tv reception antenna; Adopt unipole antenna in the time of on being applied in vehicle mostly; Utilize the ground plane of the metal shell of vehicle, so only have the reception that still may use, also destroy vehicle overall appearance aesthetic feeling simultaneously as unipole antenna.If antenna is seated in vehicle interior, then can can't receive signal smoothly because of the shielding action of vehicle metal shell.
Developed the digital television receiver antenna that to utilize the dipole antenna technology afterwards; The method of right conventional dipole antenna feed-in; All use a coaxial feed-in transmission line by the central authorities of dipole antenna with the symmetrical manner FD feed; But thus, with making coaxial feed-in transmission line certainly will can't be parallel to the bearing of trend of dipole antenna two arms.Thus; In practical application, coaxial feed-in transmission line need cause the whole needed space of digital television receiver antenna significantly to increase perpendicular to digital television receiver antenna; If when being installed in digital television receiver antenna on the vehicle, more can destroy vehicle overall appearance aesthetic feeling.In addition, when the radiation conductor width of digital television receiver antenna is narrower, can produce the not enough problem of frequency range.
Summary of the invention
In view of this; The present invention proposes a kind of wide frequency antenna; Utilize the mode of side FD feed, feasible coaxial feed-in transmission line as the feed-in circuit is able to extend along the direction of the radiation conductor of antenna, antenna size is dwindled and flattening; Wideband operation frequency range also is provided simultaneously, takes into account antenna performance, outward appearance and configuration convenience.
The wide frequency antenna that proposes according to the present invention comprises a medium substrate, a radiation conductor and a separation slit.Radiation conductor is positioned on the medium substrate, has the first side and the second routine limit, and the first side is adjacent to the second side, and the length of first side is greater than the length of second side, and the second side has first load point and second load point.First end opening of separating the slit is in the first side, and second end opening of separating the slit is in the second side.Separate the slit radiation conductor is divided into the first sub-radiation conductor and the second sub-radiation conductor.Wherein, first load point is positioned at the first sub-radiation conductor, and second load point is positioned at the second sub-radiation conductor.
For letting the wide frequency antenna characteristic of the present invention can be more obviously understandable, the hereinafter conjunction with figs., but elaborate as follows with some embodiment.
Description of drawings
Fig. 1 illustrates the sketch map according to the wide frequency antenna of one embodiment of the invention.
Fig. 2 illustrates the current path sketch map according to first resonance mode of the wide frequency antenna of one embodiment of the invention.
Fig. 3 illustrates according to the wide frequency antenna of one embodiment of the invention radiation pattern figure at 510MHz.
Fig. 4 illustrates the current path sketch map according to second resonance mode of the wide frequency antenna of one embodiment of the invention.
Fig. 5 illustrates according to the wide frequency antenna of one embodiment of the invention radiation pattern figure at 740MHz.
The loss of returning that Fig. 6 illustrates according to wide frequency antenna of one embodiment of the invention and conventional dipole antenna measures comparison diagram.
Fig. 7 illustrates another the routine sketch map according to wide frequency antenna of the present invention.
Fig. 8 illustrates the sketch map of an example again according to wide frequency antenna of the present invention.
The reference numeral explanation
100,700,800: wide frequency antenna
110: medium substrate
120,720,820: radiation conductor
121: the first side
122: the second side
123,723,823: the first sub-radiation conductors
124,724,824: the second sub-radiation conductors
125: the first load points
126: the second load points
130,730,830: separate the slit
131: the first ends
132: the second ends
61: conventional dipole antenna return the loss measurement
62: wide frequency antenna 100 return the loss measurement
63: the first resonance modes
64: the second resonance modes
Embodiment
Wide frequency antenna of the present invention; Utilize the mode of side FD feed; Feasible coaxial feed-in transmission line as the feed-in circuit is able to extend along the direction of the radiation conductor of antenna; Antenna size is dwindled and flattening, also provide antenna preferable wideband operation frequency range simultaneously, take into account antenna performance, outward appearance and configuration convenience.Wide frequency antenna of the present invention; It utilizes the side feed-in to be applicable to the antenna of various different frequency ranges with the characteristics that improve the operation frequency range; The antenna of every employing dipole antenna configuration is no matter the frequency range of its application, all can be used the side feed-in method that the present invention adopts why; Make antenna have the frequency range of broad, also preferable spatial configuration can be arranged simultaneously.
Please with reference to Fig. 1, but to illustrate be the sketch map according to the wide frequency antenna of the present invention one embodiment for it.Wide frequency antenna 100 comprises medium substrate 110, radiation conductor 120 and separates slit 130.Radiation conductor 120 can be a radiation sheet metal, can also be other conductive materials, for example is that (IndiumTin Oxide, ITO), it is to be seated on the medium substrate 110 with printing or etched mode to tin indium oxide.Radiation conductor 120 has first side 121 and second side 122, and first side 121 is adjacent to second side 122, and the length of first side 121 is greater than the length of second side 122, and second side 122 has first load point 125 and second load point 126.
First end, 131 openings of separating slit 130 in the first side 121, the second ends, 132 openings separate slit 130 radiation conductor 120 be divided into the first sub-radiation conductor 123 and the second sub-radiation conductor 124 in the second side 122.Wherein, first load point 125 is positioned at second end, 132 places, separation slit of the first sub-radiation conductor 123.Second load point 126 is positioned at second end, 132 places, separation slit of the second sub-radiation conductor 124.In addition can be when application implementation, opening is at first end in the separation slit of first side, be make the second sub-radiation conductor length convergence first side length 1/3.
In wide frequency antenna 100, first load point 125 and second load point 126 are in order to receive a radiofrequency signal from a coaxial feed-in transmission line, so that radiation conductor 120 excites first resonance mode and second resonance mode.Second resonance mode is adjacent to first resonance mode, and wide frequency antenna 100 has a wideband frequency range according to first resonance modes and second resonance mode.Moreover can be when application implementation, opening is 1/4 wavelength that makes length convergence second resonance mode of the second sub-radiation conductor at first end in the separation slit of first side.
Present embodiment is that the length with the first side is that the length of 215mm, second side is that the length of the 10mm and the second sub-radiation conductor is that 74mm explains.Please with reference to Fig. 2, but to illustrate be the current path sketch map according to first resonance mode of the wide frequency antenna of the present invention one embodiment for it.Can know by Fig. 2; The radiation field that electric current produced that the radiation field that electric current produced of second sub-radiation conductor 124 circulations can circulate with the first sub-radiation conductor 123 of the part that is positioned at the below is cancelled each other; Can know that via C=f * λ formula first resonance mode is when occurring in frequency 510MHz.Please with reference to Fig. 3, but to illustrate be according to the wide frequency antenna of the present invention one embodiment radiation pattern figure at 510MHz for it.By knowing among Fig. 3, present embodiment is when 510MHz, and (horizontal plane) produces the field pattern that is roughly the omni-directional radiation on the x-z plane, quite is suitable for the practical application of wide frequency antenna.
Please with reference to Fig. 4, but to illustrate be the current path sketch map according to second resonance mode of the wide frequency antenna of the present invention one embodiment for it.Can know by Fig. 4; The radiation field that electric current produced of the second sub-radiation conductor, 124 circulations can be cancelled each other with the radiation field that electric current produced of first sub-radiation conductor 123 circulations of the part that is positioned at the below, and whole resonance path length is about 2 times of whole resonance path length of first resonance mode.So can know via C=f * λ formula, when second resonance mode occurs in frequency 740MHz.Please with reference to Fig. 5, but to illustrate be according to the wide frequency antenna of the present invention one embodiment radiation pattern figure at 740MHz for it.By knowing among Fig. 5, the embodiment of the invention is when 740MHz, and (horizontal plane) produces the field pattern that is roughly the omni-directional radiation on the x-z plane, also quite is suitable for the practical application of wide frequency antenna.
Please with reference to Fig. 6, but to illustrate be to return loss measurement comparison diagram according to the wide frequency antenna of the present invention one embodiment and conventional dipole antenna for it.Among Fig. 6,62 for wide frequency antenna 100 of the present invention return the loss measurement, 61 return the loss measurement for conventional dipole antenna.63 is first resonance mode of the embodiment of the invention, and 64 is second resonance mode of present embodiment.As shown in the figure, (VoltageStanding Wave Ratio, VSWR) under 2.5 the situation, wide frequency antenna 100 of the present invention has wideband frequency range 470-860MHz, much larger than the about 500-600MHz of the frequency range of conventional dipole antenna in standing-wave ratio.
Please with reference to table 1, it is the comparison sheet of the wide frequency antenna of unipole antenna, conventional dipole antenna and the embodiment of the invention.
| Unipole antenna | Conventional dipole antenna | Present embodiment | |
| Size (mm 3) | 142×30 ×30 | 202×49× 0.2 | 215×10×0.4 |
| Frequency range (MHz) | 470-600 | 500-600 | 470-860 |
| Gain (dBi) | 2 | 2 | 2 |
| Standing-wave ratio (VSWR) | ＜3 | ＜3 | ＜2.5 |
Table 1
Can know that by table 1 wide frequency antenna 100 of the present invention has lower standing-wave ratio under the situation of gain that do not detract; That is has a lower loss of returning; Reduce power consumption, simultaneously, also have the wideband frequency range 470-860MHz of broad; When wide frequency antenna 100 of the present invention is applied to digital television receiver antenna, can be applicable to the DTV frequency range of various countries.And the surface area of wide frequency antenna 100 of the present invention and thinness are compared with the former two; The littler also more complanation of its surface area; So when application is automobile-used digital television receiver antenna, wide frequency antenna of the present invention will be fit to attached near the windshield in vehicle drive the place ahead and do not influence vehicle overall appearance aesthetic feeling and driver's sight line.
Above-mentioned wide frequency antenna 100, wherein separating slit 130 is a step shape.The right shape of separating slit 130 is not limited thereto, and can radiation conductor 120 be divided into the first sub-radiation conductor 123 and the second sub-radiation conductor 124 all from the scope of the present invention as long as separate slit 130.Please with reference to Fig. 7, it illustrates is another the routine sketch map according to wide frequency antenna of the present invention.In the wide frequency antenna 700, separating slit 730 is a rectilinear form, and it is divided into the first sub-radiation conductor 723 and the second sub-radiation conductor 724 with radiation conductor 720.Please with reference to Fig. 8, it illustrates is the sketch map of an example again according to wide frequency antenna of the present invention.In the wide frequency antenna 800, separating slit 830 is a rectilinear form, and it is divided into the first sub-radiation conductor 823 and the second sub-radiation conductor 824 with radiation conductor 820.
The wide frequency antenna that the present invention disclosed; Utilize the mode of side FD feed; Feasible coaxial feed-in transmission line as the feed-in circuit is able to extend along the direction of the radiation conductor of antenna; Antenna area is dwindled and flattening, also provide antenna preferable wideband operation frequency range simultaneously, be applicable to the antenna of various frequency ranges.In addition, when being applied in automobile-used digital television receiver antenna field, wide frequency antenna of the present invention also is fit to take into account the performance and the outward appearance of antenna attached near the windshield in vehicle drive the place ahead and do not influence vehicle overall appearance aesthetic feeling and driver's sight line.
In sum, though content of the present invention discloses as above with some embodiment, so it is not in order to limit the present invention.Have common knowledge the knowledgeable in the technical field under the present invention, do not breaking away from the spirit and scope of the present invention, when doing various changes and retouching.Therefore, protection scope of the present invention is as the criterion when looking appended the claim person of defining.
Claims (11)
1. wide-band dipolar antenna comprises:
One medium substrate;
One radiation conductor; Be positioned on this medium substrate, this radiation conductor has first side and second side, and this first side is adjacent to this second side; And the length of this first side is greater than the length of this second side, and this second side has first load point and second load point; And
One separation slit, first end in this separation slit be opening in this first side, second end in this separation slit be opening in this second side, this separation slit is divided into the first sub-radiation conductor and the second sub-radiation conductor with this radiation conductor;
Wherein, this first load point is positioned at this first sub-radiation conductor, and this second load point is positioned at this second sub-radiation conductor, and this first load point is connected to a system signal source anode, and this second load point is connected to a system signal source negative terminal.
2. wide-band dipolar antenna as claimed in claim 1, wherein, this radiation conductor is a radiation sheet metal.
3. wide-band dipolar antenna as claimed in claim 1, wherein, this radiation conductor is a tin indium oxide.
4. wide-band dipolar antenna as claimed in claim 1, wherein, this radiation conductor printing or be etched on this medium substrate.
5. wide-band dipolar antenna as claimed in claim 1, wherein, this separation slit is a step shape.
6. wide-band dipolar antenna as claimed in claim 1, wherein this separation slit is a rectilinear form.
7. wide-band dipolar antenna as claimed in claim 1, wherein, this separation slit is a smooth, curvilinear shape.
8. wide-band dipolar antenna as claimed in claim 1, wherein, opening is separated this first end in slit at this of this first side, make this second sub-radiation conductor this first side length of length convergence 1/3.
9. wide-band dipolar antenna as claimed in claim 1; Wherein, This first load point and this second load point receive a radiofrequency signal; Make this radiation conductor excite first resonance mode and second resonance mode, this second resonance mode is adjacent to this first resonance mode, and this wide frequency antenna is according to this first resonance mode and this second resonance mode and have a wideband frequency range.
10. wide-band dipolar antenna as claimed in claim 9, wherein, this radiofrequency signal is transmitted by a coaxial feed-in transmission line.
11. wide-band dipolar antenna as claimed in claim 9, wherein, opening makes 1/4 wavelength of this second resonance mode of length convergence of this second sub-radiation conductor at first end in this separation slit of this first side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101059493A CN101110496B (en) | 2006-07-19 | 2006-07-19 | Wideband antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101059493A CN101110496B (en) | 2006-07-19 | 2006-07-19 | Wideband antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101110496A CN101110496A (en) | 2008-01-23 |
| CN101110496B true CN101110496B (en) | 2012-07-04 |
Family
ID=39042441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101059493A Active CN101110496B (en) | 2006-07-19 | 2006-07-19 | Wideband antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101110496B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308949B (en) * | 2007-05-17 | 2012-06-13 | 光宝科技股份有限公司 | Wide-band dipolar antenna |
| CN102403571B (en) * | 2010-09-09 | 2014-11-05 | 中兴通讯股份有限公司 | Antenna device and mobile terminal |
| CN103682581B (en) * | 2012-09-17 | 2015-10-28 | 宏碁股份有限公司 | Mobile device |
| CN113036407B (en) * | 2019-12-24 | 2023-04-21 | 上海莫仕连接器有限公司 | Low profile antenna assembly |
| CN113675593B (en) * | 2020-05-14 | 2023-12-29 | 上海莫仕连接器有限公司 | Low-profile dual-band antenna device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5182570A (en) * | 1989-11-13 | 1993-01-26 | X-Cyte Inc. | End fed flat antenna |
| CN1260606A (en) * | 1998-10-30 | 2000-07-19 | Lk－产品有限公司 | Plane antenna with two resonance frequency |
| CN1377102A (en) * | 2001-03-23 | 2002-10-30 | 日立电线株式会社 | Plate antenna and electronic device with plate antenna |
-
2006
- 2006-07-19 CN CN2006101059493A patent/CN101110496B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5182570A (en) * | 1989-11-13 | 1993-01-26 | X-Cyte Inc. | End fed flat antenna |
| CN1260606A (en) * | 1998-10-30 | 2000-07-19 | Lk－产品有限公司 | Plane antenna with two resonance frequency |
| CN1377102A (en) * | 2001-03-23 | 2002-10-30 | 日立电线株式会社 | Plate antenna and electronic device with plate antenna |
Non-Patent Citations (1)
| Title |
|---|
| Zi Dong Liu et al..Dual-Frequency Planar Inverted-F Antenna.《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》.1997,第45卷1451-1458. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101110496A (en) | 2008-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3101728B1 (en) | Glass antenna for vehicle and rear window glass with glass antenna for vehicle | |
| AU2011266380A1 (en) | Window-glass antenna for vehicle | |
| CN102544726A (en) | Multi-frequency antenna module | |
| CN101110496B (en) | Wideband antenna | |
| KR100742097B1 (en) | Dual-band antenna for receiving vhf and uhf signal | |
| US20130063312A1 (en) | Monopole Antenna and Electronic Device | |
| KR100989065B1 (en) | Monopole Antenna | |
| KR100899293B1 (en) | Broadband antenna of dual resonance | |
| US7391384B2 (en) | Digital-television receiving antenna | |
| KR20120068102A (en) | Glass adhesion type integration exterior antenna | |
| KR200441931Y1 (en) | Slot Type Multi-Band Omni-Antenna | |
| Holopainen et al. | Mobile terminal antennnas implemented by using direct coupling | |
| Chi et al. | Wideband printed dipole antenna for DTV signal reception | |
| US7586456B2 (en) | Broadband antenna | |
| JP2005229140A (en) | Antenna for vehicle | |
| KR100768505B1 (en) | Intenna type dipole antenna able to receive broadcasting signal at vhf band | |
| JP2011193381A (en) | Plane antenna | |
| KR20090132721A (en) | Multi-band intenna for lap-top computer | |
| KR200487452Y1 (en) | A Digital TV Set with a Built-in Antenna | |
| CN213936539U (en) | Vehicle-mounted combined antenna for realizing multi-antenna MIMO (multiple input multiple output) by adopting discrete structure | |
| CN220797088U (en) | Antenna device and terminal | |
| EP1892800B1 (en) | Broadband antenna | |
| JP2010068122A (en) | Wideband antenna | |
| EP3376594B1 (en) | Automotive antenna | |
| CN108428999B (en) | Antenna with a shield |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |