CN102195126B - Multi-frequency antenna - Google Patents

Multi-frequency antenna Download PDF

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Publication number
CN102195126B
CN102195126B CN201010118625.XA CN201010118625A CN102195126B CN 102195126 B CN102195126 B CN 102195126B CN 201010118625 A CN201010118625 A CN 201010118625A CN 102195126 B CN102195126 B CN 102195126B
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CN
China
Prior art keywords
described
otch
grounding parts
long limit
end
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Application number
CN201010118625.XA
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Chinese (zh)
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CN102195126A (en
Inventor
赖志宏
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深圳富泰宏精密工业有限公司
奇美通讯股份有限公司
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Priority to CN201010118625.XA priority Critical patent/CN102195126B/en
Publication of CN102195126A publication Critical patent/CN102195126A/en
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Publication of CN102195126B publication Critical patent/CN102195126B/en

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Abstract

The invention provides a multi-frequency antenna, which comprises a feed-in part, a grounding part, a bending part, a main body part and an extension part, wherein the bending part is formed by extending the grounding part; the main body part is connected with the feed-in part and the grounding part respectively; the extension part is vertically connected to the main body part; and a plurality of grooves and gaps are formed on the main body part to divide the main body part into a plurality of radiation areas and obtain a plurality of frequencies.

Description

Multifrequency antenna

Technical field

The present invention relates to a kind of antenna, particularly relate to a kind of multifrequency antenna.

Background technology

Along with developing rapidly and the raising of people's living standard of wireless communication technology, mobile phone, personal digital assistant (personal digital assistant, etc. PDA) portable radio communication device competitively emerges in large numbers, and makes these portable radio communication devices become the indispensable part of modern's daily life.

In these radio communication devices, be used for launching, receiving radio wave to transmit, to exchange the antenna assembly of wireless signal, become one of most important assembly in radio communication device undoubtedly.Traditional single-band antenna device generally not easily meets the demand of people to multiband radio communication device, therefore, in order to meet the demand of user to multiband radio communication device, needs to adopt multi-frequency antenna device.And the general volume ratio of traditional multifrequency antenna is larger, a big chunk space in radio communication device may be occupied, be unsuitable for radio communication device to develop towards miniaturization, and traditional multifrequency antenna does not possess higher versatility because mostly being dual-band antenna, not easily meet the requirement of the communication system of more than three kinds and three kinds different frequency ranges simultaneously.

Summary of the invention

There is mirror at this, be necessary to provide a kind of highly versatile, and the less multifrequency antenna that takes up space.

A kind of multifrequency antenna, comprise a feeding portion, a grounding parts, a kink, a main part and an extension, described kink is formed by described grounding parts extension, described main part is connected respectively with described feeding portion and grounding parts, described extension is connected with described main part is vertical, described main part offers multiple fluting and breach, so that described main part is divided into multiple radiation areas, and obtains multiple frequency.

Compared to conventional art, described multifrequency antenna is while acquisition Multi-Frequency, and volume obviously reduces, and makes this multifrequency antenna can not take the configuration space of circuit board, is conducive to the miniaturization of radio communication device.Described multifrequency antenna operationally can produce multiple resonance frequency, adds the frequency range of described multifrequency antenna, makes the frequency range scope of this multifrequency antenna can contain multiple conventional communication system, enhances the versatility of described multifrequency antenna.

Accompanying drawing explanation

Fig. 1 is the schematic perspective view under better embodiment multifrequency antenna first visual angle of the present invention.

Fig. 2 is the schematic perspective view under the visual angle of multifrequency antenna second shown in Fig. 1.

What Fig. 3 was multifrequency antenna shown in Fig. 1 returns loss measurement result schematic diagram.

Main element symbol description

Multifrequency antenna 100

Feeding portion 5

Grounding parts 6

Kink 7

Main part 8

Extension 9

First grounding parts 61

Second grounding parts 63

3rd grounding parts 65

Groove 67

Linkage section 71

Bending segment 73

Long limit 8a, 8b

Minor face 8c, 8d

First breach 81

Second breach 82

First fluting 83

Second fluting 84

3rd fluting 85

4th fluting 86

5th fluting 87

First otch 831

Second otch 832

Three cuts 841

4th otch 842

5th otch 851

6th otch 852

7th otch 861

8th otch 862

9th otch 871

Tenth otch 872

Embodiment

The invention provides a kind of multifrequency antenna, described multifrequency antenna is a stereoscopic antenna, it can be installed in mobile phone, personal digital assistant (personal digital assistant, etc. PDA) in portable radio communication device, in order to launch, to receive radio wave to transmit, to exchange radio signal.

See also Fig. 1 and Fig. 2, the size of the multifrequency antenna 100 of better embodiment of the present invention is about 15mm × 50mm × 6mm, and it comprises feeding portion 5, grounding parts 6, kink 7, main part 8 and an extension 9.Described kink 7 is formed by described grounding parts 6 extension, and this main part 8 is connected respectively with described feeding portion 5 and grounding parts 6 and described main part 8 offers multiple fluting and breach, and described extension 9 is connected with described main part 8 is vertical.

This feeding portion 5 is a strip lamellar body, it can be installed in the traditional circuit board (not shown) in portable radio communication device described above, and be electrically connected with the traditional Signal transmissions end (not shown) arranged on the board, think that described multifrequency antenna 100 plays signal feed-in effect.

Described grounding parts 6 is a horizontal lamellar body, is arranged in same plane with described feeding portion 5, and it comprises one first grounding parts 61,1 second grounding parts 63 and one the 3rd grounding parts 65.This first grounding parts 61 is a rectangle lamellar body, and its one end can be connected to the traditional grounded part on described circuit board, thinks that described multifrequency antenna 100 provides ground connection to act on.This second grounding parts 63, for connecting described kink 7 and described 3rd grounding parts 65, makes kink 7 and described 3rd grounding parts 65 all ground connection.This second grounding parts 63 comprises one first long limit 631, minor face 633 and one second long limit 635.Described first long limit 631 is strip lamellar body always, and it vertically connects the side of feeding portion 5 dorsad in described first grounding parts 61.This minor face 633 is the vertical bar shape lamellar body that a width is slightly wider than described first long limit 631, and it is connected with the ending vertical on described first long limit 631, to be parallel to each other with described feeding portion 5.This second long limit 635 be a width and the first long limit 631 width quite and length is slightly longer than the vertical bar shape lamellar body on the first long limit 631, it is connected with the ending vertical of minor face 633, the homonymy of minor face 633 is arranged at the first long limit 631, and arranged in parallel with described first long limit 631.3rd grounding parts 65 is the lamellar body that a length is slightly shorter than minor face 633, and its two ends are vertical end and the main part 8 connecting described second long limit 635 respectively, thinks that described main part 8 provides ground connection to act on.Described first long limit 631, minor face 633 and the second long limit 635 surround the first groove 67 of a rectangle jointly.

This kink 7 comprises linkage section 71 and a bending segment 73, described linkage section 71 is a long and narrow vertical bar shaped lamellar body, be laid in described feeding portion 5 and grounding parts 6 institute in the plane, its one end to be vertically connected in minor face 633 second side, long limit 635 dorsad, and is located on same bearing of trend with the second long limit 635.Described bending segment 73 is strip lamellar body always, its place plane and described feeding portion 5 and grounding parts 6 place plane orthogonal.The length of this bending segment 73 is less than the length of described linkage section 71, and it is connected with described linkage section 71 is vertical.

This main part 8 is that an external overall profile is rectangular and be provided with the tabular lamellar body of multiple fluting and breach, and it is arranged in the plane all vertical with feeding portion 5, grounding parts 6 and bending segment 73 place plane.This main part 8 comprise two long limit 8a, 8b and two be parallel to each other be parallel to each other and with described long limit 8a, 8b orthogonal minor face 8c, 8d.This main part 8 offers one first breach 81,1 second breach 82,1 first fluting 83,1 second fluting 84, the 3rd fluting 85, the 4th fluting 86 and one the 5th fluting 87.Wherein, the first breach 81 is rectangular, and it is opened in the medium position of described long limit 8a, and extends along the direction parallel with long limit 8a.Described second breach 82 is rectangular, and itself and described first breach 81 are parallel to each other.This second breach 82 one end is opened in the medium position of described long limit 8b, and extends along the direction parallel with long limit 8b.This first fluting 83 is arranged on the same side of described first breach 81, second breach 82, and it is roughly " L " shape.This first fluting 83 comprises one first otch 831 and one second otch 832, and this first otch 831 and the second otch 832 are all in vertical bar shaped.The position of closer long limit 8b on the minor face 8c that described first otch 831 one end is opened in main part 8, and extend along the direction parallel with two long limit 8a, 8b.The width of this second otch 832 and the first otch 831 are suitable, and it is connected with the end of the first otch 831, and it moves towards then perpendicular to the first otch 831 and long limit 8a, 8b, and extends towards described long limit 8a.This second fluting 84 is roughly " L " shape, it is opened in the opposite side of described first breach 81, second breach 82.Described second fluting 84 comprises three cuts 841 and one the 4th otch 842, and this three cuts 841 and the 4th otch 842 are all in vertical bar shaped.Described three cuts 841 is between feeding portion 5 and the 3rd grounding parts 65, and it is opened in the position of closer minor face 8d on long limit 8a, and extends along the direction parallel with two minor face 8c, 8d.4th otch 842 one end is connected with the end of three cuts 841, and its trend then perpendicular to three cuts 841 and minor face 8c, 8d, and extends towards described minor face 8c.

Described 3rd fluting 85 is opened between described second breach 82 and the first fluting 83, and it comprises one the 5th otch 851 and one the 6th otch the 852, five otch 851 and the 6th otch 852 all in vertical bar shaped.5th otch 851 is opened on described long limit 8b, and its trend is parallel with long limit 8b, and its end communicates with described second breach 82 end.End and second breach 82 of the 6th otch 852 one end and described 5th otch 851 are connected, and extend along the direction parallel with two minor face 8c, 8d in main part 8, with all parallel with the described first second otch 832 and second of slotting in 83 three cuts 841 in 84 of slotting.4th fluting 86 is roughly " L " shape, it is opened between described first breach 81 and the second breach 82.4th fluting 86 comprise one the 7th otch 861 and one the 8th otch the 862, seven otch 861 roughly rectangular, its one end is connected to the end that the 6th otch 852 stretches into main part 8 inside, and its bearing of trend is consistent with the 6th otch 852.8th otch 862 is in vertical bar shaped, its one end is connected with the end of described 6th otch 852 and the end of the 7th otch 861 and together with being intersected in, its trend is then parallel to described long limit 8a, 8b, and extends along the direction parallel with the first breach 81 towards described minor face 8d.

5th fluting 87 is roughly " L " shape, it is opened between described 4th fluting 86 and the second fluting 84.5th fluting 87 comprises one the 9th otch 871 and 1 the tenth otch the 872, nine otch 871 and the tenth otch 872 all in vertical bar shaped.9th otch 871 is vertical with the 8th otch 862, and be connected with the end of described 8th otch 862 in the middle part of it, its bearing of trend is then parallel with minor face 8c, 8d.Tenth otch 872 is vertical with described 9th otch 871, and its one end is connected near one end of long limit 8b in the 9th otch 871, and its trend is parallel to the direction of long limit 8a, 8b and extends towards described minor face 8c.

This extension 9 is a rectangular patch body, and it is in the plane that is parallel to each other with described feeding portion 5 and grounding parts 6, and is connected in the described first 83 and the 3rd sections transverse transition of slotting between 85 of slotting with on main part 8.

Be appreciated that the size by adjusting described groove 67, second fluting 84 and the 5th fluting 87, to adjust the impedance matching of described multifrequency antenna 100.

Be appreciated that, due to described main part 8 being provided with multiple fluting and breach, so that described main part 8 is divided into multiple radiation areas, thus when described multifrequency antenna 100 works, after signal is entered by feeding portion 5, to propagate along different radiation areas respectively, to obtain the propagation path of different length, and produce different current signals, and then make multifrequency antenna 100 can respectively at GSM900 (band limits: 890 ~ 960MHz), DCS1800 (band limits: 1710 ~ 1880MHz), work is carried out under multiple conventional wireless communication frequency bands such as PCS1900 (band limits: 1850 ~ 1990MHz) and UMTS2100 (band limits: 1920 ~ 2170MHz).

What Figure 3 shows that described multifrequency antenna 100 returns loss (return loss, RL) measurement result schematic diagram.From described measurement result, the frequency range of this multifrequency antenna can contain to GSM 900, DCS1800, PCS1900 and UMTS2100 communication system.Wherein, when being 880MHz, 1024MHz, 1679MHz, 1813MHz and 2173MHz respectively at frequency, the RL value recording described multifrequency antenna 100 is respectively-6.02dB ,-6.05dB ,-6.02dB ,-6.69dB and-6.03dB, all meets the requirement of wireless communication system.

In addition, those skilled in the art also can make various amendments in other form and details, interpolation and replacement in the claims in the present invention scope of disclosure and spirit.Certainly, the changes such as these various amendments made according to the present invention's spirit, interpolation and replacement, all should be included in the present invention's scope required for protection.

Claims (12)

1. a multifrequency antenna, it comprises a feeding portion, one grounding parts, one kink, one main part and an extension, described kink is formed by described grounding parts extension, and be laid in described feeding portion and grounding parts place plane and the plane with described feeding portion and grounding parts place plane being perpendicular, described main part is connected respectively with described feeding portion and grounding parts, described extension is laid in the plane be parallel to each other with described feeding portion and grounding parts, and be connected with described main part is vertical, described main part comprises the two long limits be parallel to each other, described main part offers multiple fluting and at least one first breach and the second breach, so that described main part is divided into multiple radiation areas, and obtain multiple frequency, described first breach is opened in wherein on a long limit, and along extending with the described wherein direction that a long limit is parallel, described second breach is opened on another long limit, and extend along the direction parallel with another long limit described.
2. multifrequency antenna as claimed in claim 1, it is characterized in that: described feeding portion is a lamellar body, described grounding parts comprises one first grounding parts, one second grounding parts and one the 3rd grounding parts, described first grounding parts is a lamellar body and arranged in parallel with described feeding portion, described second grounding parts connects the end of described first grounding parts and the end of the 3rd grounding parts, and described 3rd grounding parts is a lamellar body and two ends described second grounding parts of vertical connection and described main part respectively.
3. multifrequency antenna as claimed in claim 2, it is characterized in that: described second grounding parts comprises one first long limit, a minor face and one second long limit, described first long limit is strip lamellar body always, it vertically connects described first grounding parts, described minor face is strip lamellar body always, and it is connected with the ending vertical on described first long limit, and described second long limit is strip lamellar body always, it is connected with the ending vertical of minor face, and arranged in parallel with described first long limit.
4. multifrequency antenna as claimed in claim 3, is characterized in that: described first long limit, minor face and the second long limit surround a groove jointly.
5. multifrequency antenna as claimed in claim 1, it is characterized in that: described main part is a lamellar body, its also comprise two be parallel to each other and with the orthogonal minor face in described long limit, described main part offers one first fluting, one second fluting, one the 3rd fluting, one the 4th fluting and one the 5th fluting.
6. multifrequency antenna as claimed in claim 1, it is characterized in that: described first breach is rectangular, described second breach is rectangular.
7. multifrequency antenna as claimed in claim 5, it is characterized in that: described first fluting comprises one first otch and one second otch, described first otch and described second otch are all in vertical bar shaped, described first otch one end is opened in wherein on a minor face, and extend along the direction parallel with two long limits, described second otch is connected with the end of the first otch, and trend then extends perpendicular to described first otch and two long limits.
8. multifrequency antenna as claimed in claim 5, it is characterized in that: described second fluting and described first is slotted and is oppositely arranged, described second fluting comprises a three cuts and one the 4th otch, described three cuts and the 4th otch are all in vertical bar shaped, described three cuts is between described feeding portion and grounding parts, it is opened in wherein on a long limit, and extend along the direction parallel with two minor faces, described 4th otch one end is connected with the end of three cuts, and its trend is then perpendicular to three cuts and minor face.
9. multifrequency antenna as claimed in claim 5, it is characterized in that: described 3rd fluting comprises one the 5th otch and one the 6th otch, described 5th otch is opened in and wherein a long limit communicates with described second breach, the other end extends along the direction being parallel to two minor faces, end and second breach of described 6th otch one end and described 5th otch connect, and extend along the direction parallel with two minor faces.
10. multifrequency antenna as claimed in claim 9, it is characterized in that: described 4th fluting comprises one the 7th otch and one the 8th otch, described 7th otch is rectangular, its one end is connected to the end that the 6th otch stretches into described main part inside, its bearing of trend is consistent with the 6th otch, described 8th breach one end is connected with the end of described 6th otch and the end of the 7th otch respectively and together with being intersected in, its trend is then parallel to two long limits.
11. multifrequency antennas as claimed in claim 10, it is characterized in that: described 5th fluting comprises one the 9th otch and 1 the tenth otch, described 9th otch is vertical bar shaped, it is vertical with described 8th breach, be connected with the end of described 8th otch in the middle part of described 9th otch, its bearing of trend is then parallel with two minor faces, and described tenth otch is vertical with described 9th otch, and is parallel to the direction on two long limits by the 9th edge, otch one end and forms towards described first fluting position extension.
12. multifrequency antennas as claimed in claim 8, is characterized in that: described extension is a lamellar body, and it is connected with the radiant section between described first slots and the 3rd slots is vertical.
CN201010118625.XA 2010-03-05 2010-03-05 Multi-frequency antenna CN102195126B (en)

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Publication number Priority date Publication date Assignee Title
CN104425895B (en) * 2013-08-29 2019-05-14 深圳富泰宏精密工业有限公司 Antenna structure and wireless communication device with the antenna structure

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Publication number Priority date Publication date Assignee Title
CN200969395Y (en) * 2006-11-14 2007-10-31 富港电子(东莞)有限公司 Multi-frequency antenna
CN101587983A (en) * 2008-05-21 2009-11-25 深圳富泰宏精密工业有限公司;奇美通讯股份有限公司 Multi-frequency antenna and radio communication system having same

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