CN101442151A - Multi-frequency antenna - Google Patents
Multi-frequency antenna Download PDFInfo
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- CN101442151A CN101442151A CNA2007101864913A CN200710186491A CN101442151A CN 101442151 A CN101442151 A CN 101442151A CN A2007101864913 A CNA2007101864913 A CN A2007101864913A CN 200710186491 A CN200710186491 A CN 200710186491A CN 101442151 A CN101442151 A CN 101442151A
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Abstract
The invention relates to a multi-frequency antenna, which comprises a ground plane, a radiation conductor, a parasitic conductor and a feed-in wire, wherein the radiation conductor comprises a feed-in part, a first radiation arm and a second radiation arm; the feed-in wire comprises a central wire and an external wire; the feed-in part is provided with a coupling edge; the parasitic conductor is connected with the ground plane and provided with a coupling edge which is arranged along a profile of the coupling edge of the feed-in part, and a gap is formed between the coupling edge of the parasitic conductor and the coupling edge of the feed-in part; the central wire is connected with the feed-in part; and the external wire is connected with the ground plane. The low-frequency resonance mode is excited through the first radiation arm and the second radiation arm and the high-frequency resonance mode is excited through the parasitic conductor, so that an antenna system integrally covers various operation frequency bands and has the characteristic of ultra wide band; and simultaneously the composition structure of the antenna is simplified.
Description
Technical field
The present invention is a kind of multifrequency antenna, is meant that especially a kind of integration contains the antenna system of super-broadband tech characteristic.
Background technology
Along with the arriving in wireless telecommunications epoch, antenna product in light weight, that volume is little, reception is good, cost is low will become the market mainstream, and dual-band antenna is a kind of miniaturized antenna, under the restrictive condition of antenna fixed dimension, still can produce two kinds of resonance frequencys.Known dual-band antenna is generally the combination of two or more different antennae type, for example: No. 6204819 disclosed Double-frequency antenna structure of patent of United States Patent (USP), planar inverted F-shape antenna and ring Shape antenna are interosculated, select different signal feed-in modes by diverter switch, between two antennas, switch, yet this antenna is a stereochemical structure, bulky and configuration is difficult for, must increase the switching chip in addition switches in order to operational frequency bands, cause the circuit structure complexity, cost of manufacture is also higher.
See also Fig. 1, be United States Patent (USP) the 7th, 180, No. 463 patents " DUAL-BANDANTENNA " front schematic view, this dual-band antenna is printed on the substrate 11, and it comprises signal feed-in assembly 12, an impedance component 13, one first emitting module 14, one first load point 141, one second emitting module 15, one second load point 151 and an earth point 17.The signal feed-in assembly 12 and first load point 141 and second load point 151 electrically connect, and provide each about 1/4 wavelength resonances chamber via earth point 17 respectively; First emitting module 14 is connected with signal feed-in assembly 12 by first load point 141, in order to the signal of emission upper frequency; Second emitting module 15 is connected with signal feed-in assembly 12 by second load point 151, in order to the signal of emission lower frequency.
See also Fig. 2, be United States Patent (USP) the 7th, 180, No. 463 patents " DUAL-BANDANTENNA " reflection loss metric data schematic diagram, by icon as can be known, in frequency of operation is between 2.4～2.5GHz and the 4.3～6GHz, and this system's mean value all is positioned at-below the 10db, shows that the operation frequency range of this dual-band antenna contains the operation frequency range of IEEE802.11a and two kinds of communication standards of 802.11b fully.
Yet this dual-band antenna is for increasing the emission frequency range, and the transmitting terminal bending of second emitting module 15 is " L " shape, to enlarge the transmitting terminal area, also causes antenna conductor length and volume excessive simultaneously; In addition for adjusting the impedance matching of first emitting module 14, at another side support portion 16 is set with respect to second emitting module 15, and must with first emitting module, 14 keeping parallelisms and a gap at interval, thereby form capacity load with first emitting module 14, this configuration will cause the antenna structure complexity, and this support portion 16 is provided with, and the position is difficult accurately grasps.
Summary of the invention
The purpose of this invention is to provide a kind of multifrequency antenna, utilize first radiation arm and second radiation arm to excite low-frequency resonance mode, parasitic conductor excites high-frequency resonance mode, antenna system is integrated contained multiple operation frequency range and possess the ultra broadband characteristic, improve the disappearance that the well-known antenna microminiaturization can't take into account high frequency range (bandwidth) simultaneously.
Another object of the present invention provides a kind of multifrequency antenna, utilize the simple and easy collocation form of radiation conductor and parasitic conductor, form structure, significantly reduce the antenna configurations space thereby simplify antenna, make it be placed in various electronic installations inside easily, reduce assembling difficulty and manufacturing cost.
For achieving the above object, multifrequency antenna provided by the invention comprises:
Ground plane;
Radiation conductor comprises:
Feeding portion has coupling edge;
First radiation arm is connected in this feeding portion and is extended by this feeding portion along a certain direction; And
Second radiation arm is connected in this feeding portion and is extended by this feeding portion along the direction opposite with the first radiation arm bearing of trend;
Parasitic conductor is connected in ground plane, and has coupling edge and dispose along the profile of the coupling edge of this feeding portion, and formation one gap between the coupling edge of the coupling edge of parasitic conductor and feeding portion; And
The feed-in line comprises:
Center conductor is connected in this feeding portion; And
Outer layer conductor is connected in this ground plane.
Described multifrequency antenna, wherein, this first radiation arm and the second radiation arm equal in length.
Described multifrequency antenna, wherein, this first radiation arm and second radiation arm are in order to excite low-frequency resonance mode.
Described multifrequency antenna, wherein, this parasitism conductor is in order to excite high-frequency resonance mode.
Described multifrequency antenna, wherein, this parasitism conductor is a parallelogram.
Described multifrequency antenna, wherein, this parasitism conductor is a rectangle.
Described multifrequency antenna, wherein, this parasitism conductor is irregular.
Description of drawings
Fig. 1 is a United States Patent (USP) the 7th, 180, No. 463 patents " DUAL-BAND ANTENNA " front schematic view.
Fig. 2 is a United States Patent (USP) the 7th, 180, No. 463 patents " DUAL-BAND ANTENNA " reflection loss metric data schematic diagram.
Fig. 3 is the front schematic view of preferred embodiment of the present invention.
Fig. 4 is that the aspect front schematic view is implemented in radiation conductor and another variation of parasitic conductor of the embodiment of the invention.
Fig. 5 is that the aspect front schematic view is implemented in the radiation conductor and the another variation of parasitic conductor of the embodiment of the invention.
Fig. 6 is the voltage standing wave ratio metric data schematic diagram of preferred embodiment of the present invention.
Fig. 7 is applied to the schematic perspective view of portable computer for preferred embodiment of the present invention.
Primary clustering symbol description in the accompanying drawing:
11 substrates
12 signal feed-in assemblies
13 impedance components
14 first emitting modules
141 first load points
15 second emitting modules
151 second load points
16 support portions
17 earth points
3 dual-band antennas
31 radiation conductors
311 feeding portions
The 311a coupling edge
312 first radiation arms
313 first radiation arms
32 parasitic conductors
The 32a coupling edge
33 feed-in lines
331 center conductors
332 insulating barriers
333 outer layer conductors
334 coating layers
34 ground planes
4 portable computers
41 frameworks
42 screens
Embodiment
Multifrequency antenna of the present invention comprises: ground plane, radiation conductor, parasitic conductor and feed-in line.Radiation conductor comprises: feeding portion, first radiation arm and second radiation arm; The feed-in line comprises: center conductor and outer layer conductor; This feeding portion has first coupling edge, and first radiation arm is connected in feeding portion and is extended by feeding portion along a certain direction, and second radiation arm is connected in feeding portion and is extended by feeding portion along the direction opposite with the first radiation arm bearing of trend; Parasitic conductor is connected in ground plane, and has second coupling edge and dispose along the profile of first coupling edge of this feeding portion, and formation one gap between first coupling edge of second coupling edge of parasitic conductor and feeding portion; Center conductor is connected in feeding portion, and outer layer conductor is connected in ground plane.
The present invention mainly utilizes first radiation arm that the radiation conductor both sides extend to be provided with and second radiation arm low-frequency resonance mode in order to the excitation antenna system, and this first radiation arm and the second radiation arm equal in length, can make low-frequency resonance mode form the second order resonance mode via fine setting, to increase the frequency range of low-frequency resonance mode; In addition via the parasitic conductor that is connected to ground plane in order to excite high-frequency resonance mode, with the synthetic ultra broadband mode of this low frequency modal, make this antenna system contain multiple operation frequency range and have broadband character simultaneously concurrently, be integrated into antenna system easily with super-broadband tech characteristic, when improving the well-known antenna miniaturized design, often can't contain the restriction of multiple systems frequency band.In addition,, form structure and volume, significantly reduce the antenna configurations space, make it be placed in various electronic installations inside easily, reduce assembling difficulty and manufacturing cost thereby simplify antenna by the simple and easy collocation form of radiation conductor and parasitic conductor.
For further understanding detailed content of the present invention, enumerate following preferred embodiment explanation as after.
See also Fig. 3, be the front schematic view of preferred embodiment of the present invention.This multifrequency antenna comprises: radiation conductor 31, parasitic conductor 32, feed-in line 33 and ground plane 34.Radiation conductor 31 comprises: feeding portion 311, first radiation arm 312 and second radiation arm 313; Feed-in line 33 comprises: center conductor 331, insulating barrier 332, outer layer conductor 333 and coating layer 334.
This feeding portion 311 has the first coupling edge 311a, first radiation arm 312 is connected in feeding portion 311 and is extended by feeding portion 311 along a certain direction, and second radiation arm 313 is connected in feeding portion 311 and is extended by feeding portion 311 along the direction opposite with first radiation arm, 312 bearing of trends; Parasitic conductor 32 is connected in ground plane 34, and has the second coupling edge 32a and along the profile of the first coupling edge 311a of this feeding portion 311 and dispose, and form a gap c between second coupling edge 32a of parasitic conductor 32 and the first coupling edge 311a of feeding portion 311, gap c by the first coupling edge 311a and the second coupling edge 32a is in order to producing the capacitive couplings effect, thereby increases the radiation conduction efficiency of parasitic conductor 32; Center conductor 331 is connected in feeding portion 311 the other end, and the high-frequency transmission signal that utilizes center conductor 331 transmission feed-in lines 33 is to feeding portion 311, and 333 of outer layer conductors are connected in ground plane 34.
The feeding portion 311 of radiation conductor 31 is trapezoidal, upper base length is about 6mm, the length of going to the bottom is about 1mm, highly be about 3mm, first radiation arm 312 and second radiation arm, 313 equal in length, length is about 15mm, width is about 1.5mm, parasitic conductor 32 is set to parallelogram in the present embodiment, and upper and lower bottom surface length is about 1mm, highly is about 3mm.
Present embodiment mainly utilizes first radiation arm 312 that radiation conductor 31 both sides extend to be provided with and the second radiation arm 313 low-frequency resonance mode in order to the excitation antenna system, and the equal in length of this first radiation arm 312 and second radiation arm 313, can make low-frequency resonance mode form the second order resonance mode via fine setting, to increase the frequency range of low-frequency resonance mode; In addition via the parasitic conductor 32 that extends ground plane 34 in order to excite high-frequency resonance mode, with the synthetic ultra broadband mode of this low frequency modal, make this antenna system contain multiple operation frequency range and have broadband character simultaneously concurrently, be integrated into antenna system easily with super-broadband tech characteristic, when improving the well-known antenna miniaturized design, often can't contain the restriction of multiple systems frequency band.Integrate the transmission band between 2.3GHz to 6GHz scope easily, because the conventional wireless communication need be sent electric wave continuously when transmission, the power consumption demand is relatively large, and super-broadband tech only just can send pulse radio when needs transmission data, therefore power consumption be can effectively reduce, power consumption and a large amount of transmitting audio-video data reduced by super-broadband tech.By the simple and easy collocation form of radiation conductor 31, form structure and volume in addition, significantly reduce the antenna configurations space, make it be placed in various electronic installations inside easily, reduce assembling difficulty and manufacturing cost thereby simplify antenna with parasitic conductor 32.
Fig. 4 is that the aspect front schematic view is implemented in radiation conductor and another variation of parasitic conductor of the embodiment of the invention, present embodiment and above-mentioned first embodiment are roughly the same, its difference is in the feeding portion 311 of this radiation conductor 31 and is rectangle, and parasitic conductor 32 also is a rectangle, make the profile configured in parallel of the second coupling edge 32a of parasitic conductor 32 along the first coupling edge 311a of feeding portion 311 through this configuration, and forming a gap c in order to producing the capacitive couplings effect, thereby increase the radiation conduction efficiency of parasitic conductor 32.
Fig. 5 is that the aspect front schematic view is implemented in the radiation conductor and the another variation of parasitic conductor of the embodiment of the invention, present embodiment and above-mentioned first embodiment are roughly the same, its difference is in the feeding portion 311 of this radiation conductor 31 and is stairstepping, and parasitic conductor 32 also is a stairstepping, learn with above-mentioned alternate embodiment, the profile of second coupling edge 32a of this parasitism conductor 32 and the first coupling edge 311a of feeding portion 311 is parallel to each other and form a gap c, produce the capacitive couplings effect through this, thereby increase the radiation conduction efficiency of parasitic conductor 32.
Fig. 6 is the voltage standing wave ratio metric data schematic diagram of preferred embodiment of the present invention, the low frequency of its antenna operation frequency range S1 and high-frequency operation frequency range S2 are defined as in voltage standing wave ratio under 2 the situation, operational frequency range is contained 2.3GHz to 6GHz, and this frequency band frequency range scope contains following system frequency range:
(1)WiMAX(2.3GHz～2.7GHz)
(2)WLAN802.11b/g(2.4GHz～2.5GHz)
(3)UWB(3.1GHz～4.9GHz)
(4)WLAN802.11a(4.9GHz～5.9GHz)
And this voltage standing wave ratio all is positioned at mean value below 1.5, show antenna structure of the present invention, really the excellent specific property that has possessed super-broadband tech, and more known dual-band antenna structure-improved has and operates the frequency range scope more widely, it forms also comparatively simplification of structure simultaneously, meets the demand of designer's microminiaturization.
Fig. 7 is applied to the schematic perspective view of portable computer for preferred embodiment of the present invention, multifrequency antenna 3 is arranged at a framework 41 edges of portable computer 4, ground plane 34 adopts tin-foil plate, and the tin-foil plate full wafer is covered on framework 41 surfaces, framework 41 inner edges are provided with a screen 42, this framework 41 can be considered the ground plane of whole dual-band antenna 3, by tin-foil plate the ground connection signal is sent to framework 41; By the simple and easy collocation form of radiation conductor 31 with parasitic conductor 32, form structure and volume thereby simplify antenna, significantly reduce the antenna configurations space, Anneta module is put easily in various electronic installations inside, thereby reduce the assembling difficulty.
Above embodiment is not in order to limiting to scope of the present invention, and various changes and retouching that those skilled in the art did are not breaking away under spirit of the present invention and the definition, all in the claim scope of the present patent application.
Claims (7)
1, a kind of multifrequency antenna comprises:
Ground plane;
Radiation conductor comprises:
Feeding portion has coupling edge;
First radiation arm is connected in this feeding portion and is extended by this feeding portion along a certain direction; And
Second radiation arm is connected in this feeding portion and is extended by this feeding portion along the direction opposite with the first radiation arm bearing of trend;
Parasitic conductor is connected in ground plane, and has coupling edge and dispose along the profile of the coupling edge of this feeding portion, and formation one gap between the coupling edge of the coupling edge of parasitic conductor and feeding portion; And
The feed-in line comprises:
Center conductor is connected in this feeding portion; And
Outer layer conductor is connected in this ground plane.
2, multifrequency antenna as claimed in claim 1, wherein, this first radiation arm and the second radiation arm equal in length.
3, multifrequency antenna as claimed in claim 1, wherein, this first radiation arm and second radiation arm are in order to excite low-frequency resonance mode.
4, multifrequency antenna as claimed in claim 1, wherein, this parasitism conductor is in order to excite high-frequency resonance mode.
5, multifrequency antenna as claimed in claim 1, wherein, this parasitism conductor is a parallelogram.
6, multifrequency antenna as claimed in claim 1, wherein, this parasitism conductor is a rectangle.
7, multifrequency antenna as claimed in claim 1, wherein, this parasitism conductor is irregular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101864913A CN101442151A (en) | 2007-11-22 | 2007-11-22 | Multi-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101864913A CN101442151A (en) | 2007-11-22 | 2007-11-22 | Multi-frequency antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101442151A true CN101442151A (en) | 2009-05-27 |
Family
ID=40726473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101864913A Pending CN101442151A (en) | 2007-11-22 | 2007-11-22 | Multi-frequency antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101442151A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011113389A2 (en) * | 2011-04-27 | 2011-09-22 | 华为终端有限公司 | Planar antenna of wireless terminal and wireless terminal |
| CN102467169A (en) * | 2010-11-02 | 2012-05-23 | 高本蓉 | display with built-in antenna |
| CN103811865A (en) * | 2012-11-01 | 2014-05-21 | 辉达公司 | Multi-band antenna and an electronic device including the same |
| US9231304B2 (en) | 2014-01-21 | 2016-01-05 | Nvidia Corporation | Wideband loop antenna and an electronic device including the same |
| US9368862B2 (en) | 2014-01-21 | 2016-06-14 | Nvidia Corporation | Wideband antenna and an electronic device including the same |
| US9595759B2 (en) | 2014-01-21 | 2017-03-14 | Nvidia Corporation | Single element dual-feed antennas and an electronic device including the same |
-
2007
- 2007-11-22 CN CNA2007101864913A patent/CN101442151A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102467169A (en) * | 2010-11-02 | 2012-05-23 | 高本蓉 | display with built-in antenna |
| WO2011113389A2 (en) * | 2011-04-27 | 2011-09-22 | 华为终端有限公司 | Planar antenna of wireless terminal and wireless terminal |
| WO2011113389A3 (en) * | 2011-04-27 | 2012-04-05 | 华为终端有限公司 | Planar antenna of wireless terminal and wireless terminal |
| CN103811865A (en) * | 2012-11-01 | 2014-05-21 | 辉达公司 | Multi-band antenna and an electronic device including the same |
| US9812770B2 (en) | 2012-11-01 | 2017-11-07 | Nvidia Corporation | Antenna integrated with metal chassis |
| US9231304B2 (en) | 2014-01-21 | 2016-01-05 | Nvidia Corporation | Wideband loop antenna and an electronic device including the same |
| US9368862B2 (en) | 2014-01-21 | 2016-06-14 | Nvidia Corporation | Wideband antenna and an electronic device including the same |
| US9595759B2 (en) | 2014-01-21 | 2017-03-14 | Nvidia Corporation | Single element dual-feed antennas and an electronic device including the same |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20090527 |