CN100414769C - Multifrequency antenna - Google Patents
Multifrequency antenna Download PDFInfo
- Publication number
- CN100414769C CN100414769C CNB2003101027287A CN200310102728A CN100414769C CN 100414769 C CN100414769 C CN 100414769C CN B2003101027287 A CNB2003101027287 A CN B2003101027287A CN 200310102728 A CN200310102728 A CN 200310102728A CN 100414769 C CN100414769 C CN 100414769C
- Authority
- CN
- China
- Prior art keywords
- frequency
- antennae
- radiation arm
- current path
- dummy slider
- 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.)
- Expired - Lifetime
Links
- 230000005855 radiation Effects 0.000 claims description 26
- 238000002955 isolation Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 8
- 238000004891 communication Methods 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract 1
- XYDVHKCVOMGRSY-UHFFFAOYSA-N 4-(4-benzylphenyl)-1,3-thiazol-2-amine Chemical compound S1C(N)=NC(C=2C=CC(CC=3C=CC=CC=3)=CC=2)=C1 XYDVHKCVOMGRSY-UHFFFAOYSA-N 0.000 description 5
- 101001050286 Homo sapiens Jupiter microtubule associated homolog 1 Proteins 0.000 description 5
- 101000928034 Homo sapiens Proteasomal ubiquitin receptor ADRM1 Proteins 0.000 description 5
- 102100023133 Jupiter microtubule associated homolog 1 Human genes 0.000 description 5
- 102100036915 Proteasomal ubiquitin receptor ADRM1 Human genes 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Images
Landscapes
- Support Of Aerials (AREA)
- Waveguide Aerials (AREA)
Abstract
A multi-frequency antenna includes a radiating body, a dummy slider antennae and a grounding surface. The radiating body comprises a first radiating arm and a second radiating arm, and a feed-in terminal and a grounding signal used for signal feeding-in and grounding are set at the side edge. The first radiating arm and a second radiating arm adopt a design of symmetric type internal rotation structure, wherein signals enter therein from the feed-in terminal and then generate current passages of different lengths along the two radiating arms to drive the radiating body to resonate at two different operating frequencies, with the specific character of double-frequency operation. Furthermore, the dummy slider antennae can be set at side of the radiating body, leading to more operating frequency possessed by the antennae; in fact, aiming at band of frequencies used by bluetooth signal, the length of the dummy slider antennae can be designed to satisfy requirement of bluetooth communication. On the other hand, the grounding surface is set below the radiating body and the dummy slider antennae to serve for aerial signal grounding. In practical applications, the part area of the grounding surface at the terminal shooting direction is hollow out to increase the antennae frequency width; wherein the hollow-out part can further allocate other components to improve the module density of integration.
Description
Technical field
The invention relates to a kind of antenna assembly, and particularly about the antenna assembly of the multiple frequency of operation of a kind of tool.
Background technology
Electronic industry is flourish at present, and all kinds of portable electronic devices are also very universal.(Personal Digital Assistant PDA) is example, except the volume of product is small and exquisite day by day with personal digital assistant, wireless transmission function also is the key project of research and development, engineers fourth of the twelve Earthly Branches foot invariably attempts to stand firm in powerful rival with all strength, establishes oneself in an unassailable position.
In wireless system, antenna is the window of signal transmitting and receiving, its operating characteristic about directly the transmitting-receiving quality of wireless signal, importance is not sayed and can be explained.In various antenna frames, the technical development of microstrip antenna (microstripantenna) is very ripe, simple structure, volume is small and exquisite and easily with characteristics such as circuit board combines, allow microstrip antenna in person communication system, occupy a tiny space.Though microstrip antenna has as above advantage, but allow these characteristics give full play to, then need the cooperation of other objective condition: for example lower dielectric constant (dielectric constant), bigger CURRENT DISTRIBUTION (current distribution) and select the antenna material etc. of low-power consumption (low loss), all good corrupt closely bound up with antenna.
The antenna that design is good, except extremely low returning the loss (return loss) will be arranged, operation frequency range (bandwidth) also is a very important ring.The designer in past is in order to obtain bigger frequency range, and regular meeting realizes antenna structure in the modes such as dielectric constant that increase antenna volume or reduction substrate (substrate).But the cost of being paid is to have wasted very valuable circuit space, and this is not allowed in the portable apparatus that the assembly integrated level day by day improves.
Summary of the invention
In view of this, purpose of the present invention is exactly in that a kind of multifrequency antenna is provided, and except that the characteristic that possesses multi-band operation, more can utilize limited volume to increase frequency range, promotes antenna performance.
According to purpose of the present invention, a kind of multifrequency antenna is proposed, being summarized as follows of this device:
Multifrequency antenna comprises radiant body, dummy slider antennae and ground plane, and radiant body has first and second radiation arm, and in side configuration feed side and earth terminal as the usefulness of signal feed-in and ground connection.First and second radiation arm is adopted symmetrical expression inward turning structure Design, and signal can produce the current path of different length respectively along two radiation arms after the feed side enters, allow radiant body resonate in two different frequency of operation, makes antenna have the characteristic of dual frequency operation; In addition, also can dispose dummy slider antennae in addition, make antenna have more multioperation frequency in radiant body is other.On practice, can design the length of dummy slider antennae at the employed frequency band of Bluetooth signal, to satisfy the user demand of bluetooth communication.On the other hand, ground plane is the below that is disposed at radiant body and dummy slider antennae, with the usefulness as aerial signal ground connection.The subregion of ground plane on end-on direction can be given hollow out when doing in fact, to increase antenna bandwidth; More configurable other assembly of openwork part is to improve the assembly integrated level.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Description of drawings
A kind of multifrequency antenna schematic diagram that provides according to a preferred embodiment of the present invention is provided Figure 1A.
Figure 1B illustrates symmetrical expression inward turning structural representation.
Fig. 2 illustrates a kind of dummy slider antennae schematic diagram.
Fig. 3 A illustrates the configuration scenario of radiant body in the multifrequency antenna, dummy slider antennae and ground plane.
Fig. 3 B illustrates the situation with ground plane part hollow out.
What Fig. 4 illustrated radiant body 100 returns the loss measurement result.
What Fig. 5 illustrated dummy slider antennae 200 returns the loss measurement result.
Label declaration
100: radiant body
200: dummy slider antennae
ARM1, ARM2: radiation arm
L1, L2, L3: current path
FD, FD ': feed side
GND, GND ': earth terminal
GPLN, GPLN ': ground plane
E: end-on direction
Embodiment
Please refer to Figure 1A, a kind of multifrequency antenna schematic diagram that provides according to a preferred embodiment of the present invention is provided for it.Radiant body 100 has radiation arm ARM1 and radiation arm ARM2, and in side configuration feed side FD and earth terminal GND, as the usefulness of signal feed-in and ground connection.Wait antenna structure according to this, can produce two main current paths, be respectively the current path L1 that feed side FD forms along radiation arm ARM1, and feed side FD is along the current path L2 of radiation arm ARM2 formation.Because the length of current path L1 is less than current path L2, after the signal feed-in, can make antenna have higher frequency of operation fH along current path L1 resonance, then make antenna have lower frequency of operation fL, make radiant body 100 have the characteristic of dual frequency operation along current path L2 resonance.Via the suitable adjustment of current path, (824～960MHz), (1710～1990MHz), (centre frequency is 900,1800MHz) to meet current dual frequency operation pattern to allow frequency of operation fH fall into the PCS frequency band can to allow frequency of operation fL fall into the GSM frequency band.
In order effectively to reduce antenna size, radiation arm ARM1 in the radiant body 100, ARM2 can adopt symmetrical expression inward turning structure Design, and be shown as Figure 1B.So-called symmetrical expression inward turning structure is meant all inwardly rotations of the formed current path of two radiation arms, and its bearing of trend is respectively dextrorotation (as radiation arm ARM1) and left-handed (as radiation arm ARM2).Because the extension trend of radiation arm is toe-in, so can increase the length of current path in limited space, antenna size can be reduced effectively.
In addition, have more multioperation frequency, can dispose a dummy slider antennae (patch antenna) in addition, make the application of antenna more flexible in radiant body is other for making antenna.Please refer to Fig. 2, it illustrates a kind of dummy slider antennae schematic diagram.Dummy slider antennae 200 has feed side FD ' and earth terminal GND ', and feed side FD ' can allow dummy slider antennae 200 have the third frequency of operation f along the formed current path L3 of antenna body, not in frequency of operation fH and frequency of operation fL.On practice, the length that can come design current path L3 at the employed frequency band of bluetooth (Bluetooth) signal, f is set in 2.45GHz with frequency of operation, to satisfy the user demand of bluetooth communication.
Please refer to Fig. 3 A, it illustrates the configuration scenario of radiant body 100 in the multifrequency antenna, dummy slider antennae 200 and ground plane GPLN.As shown in the figure, radiant body 100 and dummy slider antennae 200 are adjacent settings, and ground plane GPLN (dotted line scope) then is disposed at the below of radiant body 100 and dummy slider antennae 200, and respectively with earth terminal GND, GND ' electrically connects.During antenna operation, produced electric field be along end-on direction (endfire direction) E to external radiation, in order to increase antenna bandwidth, can be with ground plane GPLN part hollow out, shown as Fig. 3 B.Clearly, after ground plane GPLN gave hollow out (or claiming to cut) with the subregion on the end-on direction, actual ground plane GPLN ' area was little than ground plane GPLN, can be so as to promoting antenna bandwidth; Openwork part is shown in the graphic middle dashed region.In addition, more configurable other assembly of openwork part, for example card slot etc. makes the utilization of circuit space more effective, and therefore the assembly integrated level also can improve.
Then please refer to Fig. 4, what it illustrated radiant body 100 returns the loss measurement result.(voltage standing wave ratio VSWR) is lower than 3 defining operation frequency ranges, and then radiant body 100 all can satisfy design requirement at GSM frequency band and PCS frequency band, and especially look is more showed in the high frequency performance if with voltage standing wave ratio.Please refer to Fig. 5, what it illustrated dummy slider antennae 200 returns the loss measurement result.If be lower than-10dB defining operation frequency range with S11, with regard to the frequency range that bluetooth standard sets, the operating characteristic of dummy slider antennae 200 can satisfy the user demand of Bluetooth signal.
Multifrequency antenna provided by the present invention has the following advantages at least:
One, radiant body is adopted symmetrical expression inward turning structure, can effectively reduce antenna size.
Two, the design of ground plane part hollow out can increase antenna bandwidth, and as the configuration space of other assembly, improves the assembly integrated level.
In sum; though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; any insider; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking the accompanying Claim book person of defining.
Claims (7)
1. a multifrequency antenna is applied to a portable electronic devices, and this multifrequency antenna has one first frequency of operation and one second frequency of operation, and this multifrequency antenna comprises:
One radiant body, this radiant body has a feed side, an earth terminal, one first radiation arm and one second radiation arm, this first radiation arm and this second radiation arm are symmetrical expression inward turning structure, share this feed side, and this feed side is positioned at first radiation arm or second radiation arm, one side, and form one first current path and one second current path respectively, wherein this first current path reaches this second current path in order to realize this second frequency of operation in order to realize this first frequency of operation; And
One ground plane is set to relatively with this radiant body, and this ground plane is and this earth terminal electrically connects.
2. multifrequency antenna as claimed in claim 1, wherein this ground plane is the part hollow out in end-fire (endfire) direction of this multifrequency antenna.
3. multifrequency antenna as claimed in claim 1, wherein, this first frequency of operation belongs to the GSM frequency band, and this second frequency of operation belongs to the PCS frequency band.
4. a portable electronic devices has one first frequency of operation, one second frequency of operation and one the 3rd frequency of operation, and this portable electronic devices comprises:
One multifrequency antenna comprises:
One radiant body, this radiant body has a feed side, one first radiation arm and one second radiation arm, this first radiation arm and this second radiation arm are symmetrical expression inward turning structure, share this feed side, and this feed side is positioned at first radiation arm or second radiation arm, one side, and form one first current path and one second current path respectively, wherein this first current path reaches this second current path in order to realize this second frequency of operation in order to realize this first frequency of operation; And
One ground plane is set to relative with this radiant body; And
One dummy slider (patch) antenna, isolation configuration are in a side of this multifrequency antenna, and this dummy slider antennae has one the 3rd current path to realize the 3rd frequency of operation, and wherein the earth terminal of this radiant body and this dummy slider antennae electrically connects with ground plane respectively.
5. portable electronic devices as claimed in claim 4, wherein this ground plane is the part hollow out in the end-on direction of this multifrequency antenna.
6. portable electronic devices as claimed in claim 5, wherein this first frequency of operation belongs to the GSM frequency band, and this second frequency of operation belongs to the PCS frequency band, and the 3rd frequency of operation is 2.45GHz.
7. portable electronic devices as claimed in claim 4, wherein this first frequency of operation belongs to the GSM frequency band, and this second frequency of operation belongs to the PCS frequency band, and the 3rd frequency of operation is 2.45GHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101027287A CN100414769C (en) | 2003-08-14 | 2003-10-22 | Multifrequency antenna |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03154032.5 | 2003-08-14 | ||
| CN03154032 | 2003-08-14 | ||
| CNB2003101027287A CN100414769C (en) | 2003-08-14 | 2003-10-22 | Multifrequency antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1581575A CN1581575A (en) | 2005-02-16 |
| CN100414769C true CN100414769C (en) | 2008-08-27 |
Family
ID=34593098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101027287A Expired - Lifetime CN100414769C (en) | 2003-08-14 | 2003-10-22 | Multifrequency antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100414769C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101527387B (en) * | 2008-03-04 | 2012-10-24 | 广达电脑股份有限公司 | Multiple frequency antenna |
| CN114583441A (en) * | 2022-04-01 | 2022-06-03 | 维沃移动通信有限公司 | Antenna structure and electronic device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1079462A2 (en) * | 1999-08-25 | 2001-02-28 | Filtronic LK Oy | Planar antenna structure |
| CN1315064A (en) * | 1998-07-09 | 2001-09-26 | 艾利森电话股份有限公司 | Printed twin spiral dual band antenna |
| CN1409437A (en) * | 2001-09-19 | 2003-04-09 | 诺基亚有限公司 | Internal multiple frequency band antenna |
-
2003
- 2003-10-22 CN CNB2003101027287A patent/CN100414769C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315064A (en) * | 1998-07-09 | 2001-09-26 | 艾利森电话股份有限公司 | Printed twin spiral dual band antenna |
| EP1079462A2 (en) * | 1999-08-25 | 2001-02-28 | Filtronic LK Oy | Planar antenna structure |
| CN1409437A (en) * | 2001-09-19 | 2003-04-09 | 诺基亚有限公司 | Internal multiple frequency band antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1581575A (en) | 2005-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7193565B2 (en) | Meanderline coupled quadband antenna for wireless handsets | |
| US9761944B2 (en) | Antennaless wireless device | |
| US6429819B1 (en) | Dual band patch bowtie slot antenna structure | |
| US6407710B2 (en) | Compact dual frequency antenna with multiple polarization | |
| US7443344B2 (en) | Antenna arrangement and a module and a radio communications apparatus having such an arrangement | |
| US6429818B1 (en) | Single or dual band parasitic antenna assembly | |
| US6456249B1 (en) | Single or dual band parasitic antenna assembly | |
| EP1506594B1 (en) | Antenna arrangement and module including the arrangement | |
| US7057560B2 (en) | Dual-band antenna for a wireless local area network device | |
| EP0829110B1 (en) | Printed monopole antenna | |
| KR101163419B1 (en) | Hybrid Patch Antenna | |
| EP1128466A2 (en) | Planar antenna structure | |
| EP1750323A1 (en) | Multi-band antenna device for radio communication terminal and radio communication terminal comprising the multi-band antenna device | |
| US7050009B2 (en) | Internal antenna | |
| KR20010075231A (en) | Capacitively-tune broadband antenna structure | |
| WO2001033665A1 (en) | Single or dual band parasitic antenna assembly | |
| EP1776736A1 (en) | A multi-band antenna arrangement | |
| JP2007281990A (en) | Antenna device and wireless communication instrument using the same | |
| EP1360740A1 (en) | Wireless terminal with a plurality of antennas | |
| US20020177416A1 (en) | Radio communications device | |
| KR100766784B1 (en) | Antenna | |
| CN100414769C (en) | Multifrequency antenna | |
| EP1253667A1 (en) | Patch antenna | |
| CN107394383B (en) | Slot plane inverted L antenna and blue tooth communication device | |
| KR20040051002A (en) | Printed Multiband Antenna |
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 | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080827 |