CN101587986B - Multi-frequency antenna - Google Patents
Multi-frequency antenna Download PDFInfo
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- CN101587986B CN101587986B CN2008103016326A CN200810301632A CN101587986B CN 101587986 B CN101587986 B CN 101587986B CN 2008103016326 A CN2008103016326 A CN 2008103016326A CN 200810301632 A CN200810301632 A CN 200810301632A CN 101587986 B CN101587986 B CN 101587986B
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Abstract
The invention discloses a multi-frequency antenna, which is arranged on a substrate and comprises a signal feed-in part, a grounded metal layer and an antenna body. The signal feed-in part is used forfeeding in electromagnetic wave signals. The grounded metal layer is arranged on the substrate. The antenna body is electrically connected to the signal feed-in part, and used for transceiving the el ectromagnetic wave signals. The antenna body comprises a first radiation part and a second radiation part. The first radiation part comprises a first radiation section, a second radiation section and a third radiation section which are electrically connected in turn. The first radiation section is electrically connected to the signal feed-in part. The first radiation section, the second radiation section and the third radiation section form an accommodating space. The second radiation part is accommodated in the accommodating space and electrically connected with the signal feed-in part. The multi-frequency antenna has small volume and low height, and can cover four different frequency bands at the same time.
Description
Technical field
The present invention relates to antenna, relate in particular to a kind of multifrequency antenna.
Background technology
Along with the rise of speech business in the radio communication, arrowband and broadband services, the mobile communication product market demand enlarges day by day, has only that those volumes are little, the wireless communications products of high sensitivity, high stability just can meet the need of market.Therefore also more and more higher to the requirement of antenna, miniaturization, built-inization, multiband, intellectuality are the development trends of mobile terminal antenna.With person's 3G (Third Generation) Moblie, the development of technology such as WLAN (wireless local area network), multifrequency antenna is the recent tendency of market development.
Existing chip formula antenna area occupied is little but cost is higher, and existing iron plate formula antenna cooperates the varying environment demand easily but need and cost an arm and a leg than large tracts of land and headroom district.The realization of present multifrequency antenna needs to carry out corresponding change to the structure of Department of Radiation and to the distance on Department of Radiation and ground.How to carry out global system for mobile communications (Global System for Mobile Communications in the antenna transformation, GSM), dcs (Distributed Control System, DCS), personal communication service (Personal communication Service, PCS) and Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, W-CDMA) frequency spectrum is integrated, and keeping antenna to design with less area and volume simultaneously then is a major challenge.
Summary of the invention
It is little, highly low and can cover the multifrequency antenna of four different frequency ranges simultaneously that the technical problem to be solved in the present invention provides a kind of volume.
A kind of multifrequency antenna is arranged on the substrate, and it comprises signal feed-in part, ground metal layer and antenna body.Signal feed-in part is used for the feed-in electromagnetic wave signal.Ground metal layer is arranged on the substrate.Antenna body is electrically connected at signal feed-in part, is used to receive and dispatch electromagnetic wave signal.Antenna body comprises first Department of Radiation and second Department of Radiation.First Department of Radiation comprises first radiant section, second radiant section and the 3rd radiant section that electrically connects successively.First radiant section is electrically connected at signal feed-in part.First radiant section, second radiant section and the 3rd radiant section form receiving space.The 3rd radiant section comprise first parallel-segment and second parallel-segment that is parallel to each other and be vertically connected at described first parallel-segment and described second parallel-segment between linkage section, described first parallel-segment is unsettled, described second parallel-segment is connected in described second radiant section, and described first parallel-segment, described second parallel-segment and described linkage section form U-shaped jointly.Second Department of Radiation takes the shape of the letter U, and the one end is electrically connected at described signal feed-in part, and the other end is folded to and receives described appearance space is free end.
It is little, highly low and can cover the advantage of four different frequency ranges simultaneously that above-mentioned multifrequency antenna has a volume.
Description of drawings
Fig. 1 is the plane graph of multifrequency antenna one execution mode of the present invention.
Fig. 2 is the schematic diagram of another execution mode multifrequency antenna of the present invention.
Fig. 3 for the voltage standing wave ratio figure of multifrequency antenna of the present invention (Voltage Standing Wave Ratio, VSWR).
Fig. 4 is the Smith chart (Smith Chart) of multifrequency antenna of the present invention.
Embodiment
As shown in Figure 1, be depicted as the plane graph of multifrequency antenna 100 1 execution modes of the present invention.In the present embodiment, multifrequency antenna 100 is arranged on the substrate 10, and it comprises signal feed-in part 110, ground metal layer 130 and antenna body.Signal feed-in part 110 is used for the feed-in electromagnetic wave signal.Antenna body is connected in signal feed-in part 110, is used to receive and dispatch electromagnetic wave signal, and it comprises first Department of Radiation 121 and second Department of Radiation 122.First Department of Radiation 121 is made of a plurality of end to end radiant section, and for example it comprises first radiant section 1211, second radiant section 1212 and the 3rd radiant section 1213 that electrically connects successively in the present embodiment.That the shape of radiant section comprises is L shaped, S shape, W shape and U-shaped etc.As in the present embodiment, first radiant section 1211 is L shaped, and second radiant section 1212 can be S shape or W shape or U-shaped or is the combination of described shape radiant section, and the 3rd radiant section 1213 is a U-shaped.First radiant section 1211 is electrically connected at signal feed-in part 110.First radiant section 1211, second radiant section 1212 and the 3rd radiant section 1213 form receiving space.Second Department of Radiation 122 is contained in the described receiving space.
First radiant section 1211 comprises the first horizontal segment 1211a and the first vertical section 1211b that mutual vertical electrical connects, and the two forms L shaped jointly.The first horizontal segment 1211a is electrically connected at the end 1212b that signal feed-in part 110, the first vertical section 1211b are electrically connected at second radiant section 1212.
The 3rd radiant section 1213 comprise the first parallel-segment 1213a and the second parallel-segment 1213b that is parallel to each other and be vertically connected at the first parallel-segment 1213a and the second parallel-segment 1213b between linkage section, and the first parallel-segment 1213a, the second parallel-segment 1213b and linkage section form U-shaped jointly, and wherein first radiant section 1211, second radiant section 1212 and the second parallel-segment 1213b form receiving space jointly.The first parallel-segment 1213a is unsettled, and the second parallel-segment 1213b is connected in the other end 1212a of second radiant section 1212.
Second Department of Radiation 122 is contained in first Department of Radiation, the 121 formed receiving spaces, and its shape can be U-shaped, L shaped or its combination.In the present embodiment, second Department of Radiation 122 takes the shape of the letter U, and the one end is electrically connected at signal feed-in part 110, and the other end is folded to receiving space and is free end.In the present embodiment, first Department of Radiation 121, second Department of Radiation 122 and signal feed-in part 110 are printed in the surface of substrate 10.
First radiant section 1211, second radiant section 1212 and the 3rd radiant section 1213 formed bending shapes by first Department of Radiation 121 can effectively dwindle first Department of Radiation 121 and take up space.So design in the coupling effect that both contiguous spaces form, can increase the width of second Department of Radiation, 122 radiation frequencies by first Department of Radiation 121 and second Department of Radiation 122.
In the present embodiment, signal feed-in part 110, first Department of Radiation 121, second Department of Radiation 122 and metal ground plane 130 adopt the printed circuit mode to be arranged at the surface of substrate 10.
In the present embodiment, the surface area of multifrequency antenna 100 is about 20 * 28mm^2.
As shown in Figure 2, be the schematic diagram of another execution mode multifrequency antenna of the present invention 100`.Multifrequency antenna 100` in the present embodiment is developed by the multifrequency antenna among Fig. 1 100, difference is that multifrequency antenna 100` is a stereochemical structure, the realization of the stereochemical structure of multifrequency antenna 100` mainly bends in the same way by the left and right sides that reaches up and down with antenna body, and multifrequency antenna 100` is fixed on the substrate 10, can realize the stereochemical structure of multifrequency antenna 100`.Multifrequency antenna 100` volume is about 15 * 19 * 3mm^3.Multifrequency antenna 100` adopts the mold design of iron plate formula, can effectively dwindle its volume.
In embodiment of the present invention, multifrequency antenna 100,100` have four working frequency range, can make things convenient for adjusting as required, and each frequency range has certain frequency range, can satisfy the demand of present portable terminal.In addition, multifrequency antenna 100,100` width can be controlled in below the 30mm, are compatible with peripheral component interconnection (Peripheral Component Interconnection, PCI) framework.
As shown in Figure 3, for the voltage standing wave ratio of multifrequency antenna among Fig. 1 100 (Voltage Standing Wave Ratio, VSWR), when multifrequency antenna 100 worked in 0.882GHz, its VSWR value was about 2.23; When working in frequency when being 0.960GHz, the VSWR value is about 1.09; When working in frequency when being 1.711GHz, the VSWR value is about 3.27; When working frequency range was 2.202GHz, the VSWR value was about 1.99.During working frequency range, its VSWR value meets industry standard all less than 3.5 near multifrequency antenna 100 works in.
As shown in Figure 4, for multifrequency antenna among Fig. 1 100 work near the Smith chart (Smith Chart) of working frequency range, when operating frequency was 0.8802GHz, r was about 0.46, x is about-0.17; When operating frequency was 0.96GHz, r was about 0.98, and x is about-0.08; When operating frequency was 1.712GHz, r was about 0.50, and x is about 0.72; When operating frequency was 2.201GHz, r was about 0.84, and x is about-0.62.
Claims (7)
1. a multifrequency antenna is arranged on the substrate, it is characterized in that, described multifrequency antenna comprises:
Signal feed-in part is used for the feed-in electromagnetic wave signal;
Ground metal layer is arranged on the described substrate; And
Antenna body is connected in described signal feed-in part, is used to receive and dispatch electromagnetic wave signal, and described antenna body comprises:
First Department of Radiation, comprise first radiant section that electrically connects successively, second radiant section and the 3rd radiant section, described first radiant section is electrically connected at described signal feed-in part, described first radiant section, second radiant section and described the 3rd radiant section form receiving space, wherein said the 3rd radiant section comprise first parallel-segment and second parallel-segment that is parallel to each other and be vertically connected at described first parallel-segment and described second parallel-segment between linkage section, described first parallel-segment is unsettled, described second parallel-segment is connected in described second radiant section, described first parallel-segment, described second parallel-segment and described linkage section form U-shaped jointly; And
Second Department of Radiation takes the shape of the letter U, and the one end is electrically connected at described signal feed-in part, and it is free end that the other end is folded to described receiving space.
2. multifrequency antenna as claimed in claim 1 is characterized in that, described signal feed-in part, described ground metal layer and described antenna body all are printed on the described substrate.
3. multifrequency antenna as claimed in claim 1 is characterized in that described antenna body is arranged on the described substrate.
4. multifrequency antenna as claimed in claim 1, it is characterized in that, described first radiant section comprises first horizontal segment and first vertical section that mutual vertical electrical connects, described first horizontal segment is electrically connected at described signal feed-in part, the common formation of described first horizontal segment and described first vertical section is L shaped, and described first vertical section is connected in described second radiant section.
5. multifrequency antenna as claimed in claim 1 is characterized in that, described second radiant section is S shape or W shape or U-shaped or is the combination of described shape radiant section that its two ends are electrical connected with first radiant section and the 3rd radiant section respectively.
6. multifrequency antenna as claimed in claim 1 is characterized in that, can produce coupling effect thereby have certain clearance between described first Department of Radiation and second Department of Radiation.
7. multifrequency antenna as claimed in claim 1 is characterized in that, thereby described first Department of Radiation and second Department of Radiation can be bent and make described multifrequency antenna become three-dimensional antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103016326A CN101587986B (en) | 2008-05-19 | 2008-05-19 | Multi-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103016326A CN101587986B (en) | 2008-05-19 | 2008-05-19 | Multi-frequency antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101587986A CN101587986A (en) | 2009-11-25 |
| CN101587986B true CN101587986B (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008103016326A Expired - Fee Related CN101587986B (en) | 2008-05-19 | 2008-05-19 | Multi-frequency antenna |
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| Country | Link |
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| CN (1) | CN101587986B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011102017A1 (en) * | 2010-02-16 | 2011-08-25 | 株式会社村田製作所 | Antenna and wireless communication device |
| JP6772024B2 (en) * | 2016-10-21 | 2020-10-21 | タイコエレクトロニクスジャパン合同会社 | antenna |
| CN112909511B (en) * | 2021-02-05 | 2023-03-17 | 哈尔滨工程大学 | Multiband 5G terminal antenna |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2629235Y (en) * | 2003-05-22 | 2004-07-28 | 富士康(昆山)电脑接插件有限公司 | Double-frequency antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201060938Y (en) * | 2007-06-29 | 2008-05-14 | 富港电子（东莞）有限公司 | Multi-frequency antenna |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2629235Y (en) * | 2003-05-22 | 2004-07-28 | 富士康(昆山)电脑接插件有限公司 | Double-frequency antenna |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2008-42368A 2008.02.21 |
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| CN101587986A (en) | 2009-11-25 |
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Free format text: FORMER OWNER: HONGFUJIN PRECISE INDUSTRY CO., LTD. Effective date: 20140521 Owner name: NANNING FUGUI PRECISION INDUSTRY CO., LTD. Free format text: FORMER OWNER: HONGFUJIN PRECISE INDUSTRY (SHENZHEN) CO., LTD. Effective date: 20140521 |
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Effective date of registration: 20140521 Address after: 530007, No. 5, No. three, China ASEAN enterprise headquarters base, No. 18, head office, hi tech Zone, the Guangxi Zhuang Autonomous Region, Nanning Patentee after: NANNING FUGUI PRECISION INDUSTRIAL CO., LTD. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Patentee before: Hongfujin Precise Industry (Shenzhen) Co., Ltd. Patentee before: Hon Hai Precision Industry Co., Ltd. |
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Granted publication date: 20130731 Termination date: 20160519 |
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| CF01 | Termination of patent right due to non-payment of annual fee |