CN1365161A - Multiple frequency antenna device - Google Patents
Multiple frequency antenna device Download PDFInfo
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- CN1365161A CN1365161A CN 01102205 CN01102205A CN1365161A CN 1365161 A CN1365161 A CN 1365161A CN 01102205 CN01102205 CN 01102205 CN 01102205 A CN01102205 A CN 01102205A CN 1365161 A CN1365161 A CN 1365161A
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- 239000004744 fabric Substances 0.000 claims description 63
- 239000004020 conductor Substances 0.000 claims description 30
- 239000000758 substrate Substances 0.000 claims description 26
- 238000004891 communication Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims 2
- 230000005855 radiation Effects 0.000 abstract 5
- 238000005452 bending Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 24
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000144985 peep Species 0.000 description 1
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Abstract
The multiple frequency antenna device includes the first bending and extending radiation unit in the first frequency range mode, the second radiation unit in the second frequency range mode, and one feeding radiation unit with at least two ends, one for signal feeding and the other for connecting the first radiation unit and the second radiation unit. By means of top loading structure and curved antenna design, the present invention has double resonant frequencies, wide frequency range, certain concealment and low cost.
Description
The invention relates to antenna assembly (antenna), particularly, about a kind of multi-frequency antenna device (antenna operable in multiple frequency bands), this antenna assembly is common in the wireless communication transmission equipment (wireless communication device).
In recent years, individual action wireless (wireless) communication transmission equipment increases fast and popularizes.For the consumer is provided multi-functional wireless communication services, the mobile phone module design of double frequency (two frequency bands) or multifrequency is luxuriant to be trend, and relatively the antenna part of the transmission of responsible signal and reception also must have the characteristic of double frequency or multifrequency.Distinguish from outward appearance, antenna for mobile phone can be divided into concealed and non-concealed.
Non-hidden antenna for mobile phone great majority are to adopt linear antenna (wire antenna) to reach the purpose of double frequency in conjunction with helical aerials (helix antenna).United States Patent (USP) 5,926 in 139 the document, discloses a kind of antenna structure of double frequency at least that has, shown in Fig. 1 a and Fig. 1 b.This antenna structure comprises one first antenna element, P2 or P3 and one second antenna element, HX3 or HX4.First antenna element, P2 or P3, linear conductor (straightconductor) always preferably, and second antenna element, HX3 or HX4, preferably a conductor (wound into cylindrical coil) that wriggles into cylindric coil.This antenna structure 100 has different resonance frequency (resonance frequencies).The antenna element of thin pole shape (rod), P2 or P3 are that part is contained the antenna element at helical form (helical), in HX3 or the HX4, and both can comprise identical load point (feed point) A4, or divide other load point, A5 and A6.This antenna structure 100 can comprise a third antenna element (not being shown in diagram), the third antenna element is preferably a kind of have one with other two resonance frequencys that antenna element is different, and wriggle into the conductor of cylindric coil.
The non-concealed antenna structure of mobile phole of this kind is used on the mobile model telephone set (mobilephone), and this telephone set is done in to use in the multiple cell phone system of different frequency then.Yet this kind antenna structure need be assembled in outside the casing of mobile phone, and outstanding antenna part is lost because of user's careless mistake causes easily.
And hidden antenna for mobile phone is its main design principle with planar inverted-F antenna (planar inverted F-antenna).United States Patent (USP) 6,054 in 966 the document, discloses a kind of single planar antenna that is used for double frequency, as shown in Figure 2.This flat plane antenna comprises that one first width of cloth that is used for double frequency penetrates position (radiating portion) 202 and 1 second width of cloth and penetrate position 204, this first width of cloth is penetrated part 202 and second width of cloth and is penetrated part 204 and connected by the connecting portion (connecting portion) 208 of a conductive material layer 206, and separates with the ground plane (ground plane) 210 of a conductive material.It is to be formed on conductive material layer 206 with a planar inverted-F antenna that each width of cloth is penetrated the position.Preferable conductive material layer such as sheet metal.Grounding leg (groundingpin) 212 is connected to each other connecting portion 208 and ground plane 210, and a single feed-in pin (single feed pin) is connected to connecting portion 208 at the I/O port (input/output port) of transmission circuit (transceivercircuitry).This single planar antenna 200 utilizes does the design of slit (slit) on planar metal sheet (patch), and makes antenna that the effect of double frequency can be arranged.
Only, the shortcoming of this hidden antenna for mobile phone is, when planar metal sheet was dwindled, its frequency range also can reduce thereupon, and size and frequency range are not easy to take into account simultaneously.
The object of the present invention is to provide a kind of multi-frequency antenna device, it can overcome the shortcoming of conventional mobile phone antenna, and multiple advantages such as have double resonance frequency, wideband and hide, more can be applicable to the individual radio communication device, as mobile telephone mobile phone etc., the short-distance wireless communication device, as household radio telephone etc., and on the Wireless LAN communication apparatus.
Multi-frequency antenna device of the present invention comprises that one first width of cloth is penetrated unit (first radiating element), one second width of cloth is penetrated unit (second radiating element), and a feed-in width of cloth is penetrated unit (feedingradiating element).It is a conductive material that this first width of cloth is penetrated the unit, and with complications (bendwire) extension, and the antenna that has one first frequency range (frequency band) forms, in order to the characteristic of first frequency range of controlling this antenna; It is a conductive material that this second width of cloth is penetrated the unit, and forms with an antenna that has one second frequency range, in order to the characteristic of second frequency range of controlling this antenna; This feed-in width of cloth is penetrated the unit and is had two ends at least, one end is as the signal feed side, make the same feed-in of signal common of first frequency band and second frequency band, the other end is penetrated first width of cloth at unit and second width of cloth and is penetrated the unit and interconnect, and forms the structure that the top loads (top loaded).
According to the present invention, this multi-frequency antenna device utilizes the top loading structure to obtain double resonance frequency (dual resonance frequency), wideband in conjunction with the total design in dioptric type sky and a plurality of purposes such as hides.
The purpose of dioptric type antenna is to dwindle the overall dimensions of antenna effectively; The purpose of top loading structure is, the bearing of trend that can make antenna changes and can fully be seated in and reach hiding effect in the casing of mobile phone; In addition, cheap also is another purpose of multi-frequency antenna device of the present invention.Again, because this antenna assembly can be used general material, so its material and manufacturing cost all can significantly reduce, be fit to very much a large amount of production, the market competitiveness is strong.
In an embodiment of the present invention, the dioptric type antenna that first width of cloth is penetrated the unit is the metal wire that adopts square wave (square wave) or multiple meander-shaped such as sawtooth (sawtooth) and sine curve (sinusoid) to extend, be used for controlling the low frequency band characteristic of this antenna, and use the entire length that shortens antenna.Length by the tortuous metal wire of control is adjusted the centre frequency and the frequency range of antenna with tortuous number of times.The antenna that second width of cloth is penetrated the unit is to adopt linearly extended metal wire sections, controls the characteristic of the high-frequency band of this antenna by the length that changes metal wire sections and width.In addition, the also available tortuous mode of extending of this metal wire sections is implemented.
In addition, when using in the individual action communication transmission equipment, the feed-in width of cloth of multi-frequency antenna device of the present invention is penetrated the unit three kinds of preferred implementation.One for the metal wire of no substrate (base); Other two kinds is the metal wire that substrate is arranged, and metal wire is placed on the surface of substrate respectively with inner.Similarly, the also available three kinds of execution modes of the antenna of two different frequency ranges.One for the bimetallic conductor of no substrate; Other two kinds is the bimetallic conductor that substrate is arranged, and metal wire is placed on the surface of substrate respectively with inner, and these two sections metal wires can be distributed on the different aspects.In addition, the surface that bimetallic conductor distributed can be plane (plane) or cambered surface (curved surface).
The antenna return loss of multi-frequency antenna device of the present invention (return loss) characteristic measurement, embodiment and the commercial three-frequency antenna embodiment with a dual-band antenna analyzes respectively.The design of the opereating specification of dual-band antenna is in GSM900 and DCS800 frequency range, its-the 10dB frequency range is respectively 130MHz and 230MHz.Commercial its high-frequency range of three-frequency antenna even can comprise DCS1800 and PCS1900 two frequency ranges.
Now the detailed description and the patent claim that cooperate following graphic, embodiment, will on address other objects and advantages of the present invention and be specified in after, wherein:
Fig. 1 a and Fig. 1 b are a known schematic diagram of the antenna structure of double frequency at least that is used for.
Fig. 2 is the schematic diagram of another known single planar antenna that is used for double frequency.
Fig. 3 is the schematic diagram of a preferred embodiment of multi-frequency antenna device of the present invention.
Fig. 4 a-Fig. 4 c is respectively according to the present invention, and first width of cloth is penetrated the antenna of unit and three kinds of execution modes of the antenna that second width of cloth is penetrated the unit.
Fig. 5 a-Fig. 5 c is respectively according to the present invention, and the feed-in width of cloth is penetrated three kinds of execution modes of unit.
Fig. 6 is the execution mode that utilizes Fig. 4 a and Fig. 5 a, a multi-frequency antenna device of the present invention and the printed circuit board applications assembling mode in a mobile phone casing.
Fig. 7 a-7c is according to the present invention, and first width of cloth is penetrated three kinds of tortuous execution modes that extend of the dioptric type antenna of unit.
Fig. 8 is according to the present invention, and the measurement of antenna return loss characteristic of the embodiment of a dual-band antenna is described.
Fig. 9 is according to the present invention, and the measurement of antenna return loss characteristic of the embodiment of a suitable three-frequency antenna is described.
Fig. 3 is the schematic diagram of a preferred embodiment of multi-frequency antenna device of the present invention.As shown in Figure 3, this multi-frequency antenna device 300 comprises that one first width of cloth is penetrated unit 302, one second width of cloth is penetrated unit 304, and a feed-in width of cloth is penetrated unit 300.This first width of cloth is penetrated unit 302 with a tortuous extension, and the antenna that has one first frequency range forms, and is used for controlling the characteristic of first frequency range of this antenna; This second width of cloth is penetrated unit 304 and is formed with an antenna that has one second frequency range, is used for controlling the characteristic of second frequency range of this antenna; This feed-in width of cloth is penetrated unit 306 and is had two ends, one end is as signal feed side 308, make the same feed side 308 of signal common of first frequency band and second frequency band, the other end 310 is penetrated first width of cloth at unit 302 and second width of cloth and is penetrated unit 304 and electrically connect mutually, and forms the structure that the top loads.The structure that this top loads changes the bearing of trend of antenna, reaches hiding effect and can fully be seated in the casing of mobile phone.
According to the present invention, this first frequency range is different from this second frequency range.Again, first width of cloth is penetrated unit 302, second width of cloth is penetrated unit 304, and the feed-in width of cloth penetrates unit 306 and be all conductive material, as metal material.
Fig. 4 a-Fig. 4 c is respectively according to the present invention, and first width of cloth is penetrated the antenna of unit 302 and three kinds of execution modes of the antenna that second width of cloth is penetrated unit 304.Among Fig. 4 a, first width of cloth is penetrated the antenna of unit 302 and antenna that second width of cloth is penetrated unit 304 bimetallic conductor 412 and 414 for no substrate.Among Fig. 4 b, this bimetallic conductor 412 and 414 is placed on the top surface 404 of a substrate 402.Among Fig. 4 c, two sections metal wires 412 and 414 are placed on the inside of substrate, and these two sections metal wires are distributed in different aspect L
1And L
2On.According to the present invention, bimetallic conductor 412 and 414 surfaces that distributed can be plane or cambered surface, and shown among Fig. 4 b and Fig. 4 c is the plane.
Similarly, according to the present invention, the feed-in width of cloth is penetrated unit 306 also has three kinds of realities to drag mode, shown in Fig. 5 a-Fig. 5 c.Fig. 5 a is depicted as in the mode of the metal wire 512 of no substrate and implements; Fig. 5 b is depicted as on the top surface 504 that metal wire 512 is placed on a substrate 502.Fig. 5 c is 506 li of the internal layers that metal wire 512 is placed on substrate 502.
Among above-mentioned Fig. 4 b and Fig. 4 c and Fig. 5 b and Fig. 5 c, its base material is dielectric such as ceramic material, FR4 plate etc.
Figure 6 shows that, utilize Fig. 4 a no substrate bimetallic conductor 412 and 414 and the feed-in width of cloth of the no substrate of Fig. 5 a penetrate the execution mode of metal wire 512, multi-frequency antenna device of the present invention and a printed circuit board (PCB) 602 are assembled in schematic diagram in the mobile phone casing.The feed-in width of cloth is penetrated metal wire 512 and bimetallic conductor 412 and 414 planes that constituted, and its angle theta can be right angle, acute angle or obtuse angle, in order to avoid outstanding antenna part is arranged.Preferable global angle scope is spent between 180 degree between 70.
According to the present invention, the dioptric type antenna that first width of cloth is penetrated unit 302 has multiple tortuous extension mode.Fig. 7 a-7c is three kinds of preferable execution modes, is respectively square wave (square wave), sawtooth and sinusoidal shape.Utilize this tortuous extension mode, the present invention is shortened the entire length of antenna.Very and, the complications that first width of cloth is penetrated unit 302 are extended mode and also can be selected combining of these meander-shaped for use, the curve of each meander-shaped also can use the different cycles.Again, can be by the length of the tortuous metal wire of control and tortuous number of times, and the centre frequency and the frequency range of antenna are investigated.On the other hand, penetrate unit 304 (implementing with metal wire among the present invention) for being used for second width of cloth of control antenna high-frequency band characteristic, then be to do preferable design, come the centre frequency and the frequency range of antenna are adjusted by the length that changes it and width in the mode of straight line.In addition, this section metal wire also can be implemented with the mode that complications are extended.
The present invention analyzes the operation effect of multi-frequency antenna device of the present invention respectively with the embodiment of a dual-band antenna and the embodiment of a commercial three-frequency antenna.The antenna return loss characteristic measurement of this two embodiment is shown in Fig. 8 and Fig. 9 respectively, wherein, the resonance frequency of abscissa representative antennas (unit is GHz), ordinate is represented the S-parameter S
11Value (unit price is dB), this parameter S
11Illustrated that (antenna port) is back to the ratio of the radio-frequency power (radio frequency power, RF power) of feed-in circuit to original feed-in power from the antenna port, that is the return loss of this antenna.
Among Fig. 8, the opereating specification of this dual-band antenna is to design in GSM900 and DCS1800 frequency range, works as S
11Equal-during 10dB, its frequency range is respectively 130MHz and 230MHz, that is from 841MHz to 971MHz with from 1671MHz to 1901MHz.Metal wire all is fabricated on the substrate surface of a FR4 among this embodiment.
Can peep among Fig. 9 and know, the high-frequency range of this commercial three-frequency antenna even can comprise DCS1800﹠amp; 1900 liang of frequency ranges of PCS (personal communication system).
From as can be known above-mentioned, multi-frequency antenna device of the present invention not only overcomes the shortcoming of conventional mobile phone antenna, and multiple advantages such as have double resonance frequency, wideband and hide, more can be applicable to the individual radio communication device, as mobile telephone mobile phone etc., the short-distance wireless communication device, as household radio telephone etc., and on the Wireless LAN communication apparatus.
Only, the above person only is preferred embodiment of the present invention, when not limiting scope of the invention process with this.Promptly the equalization of being done according to the present patent application claim generally changes and modifies, and all should still belong in the scope that patent of the present invention contains.
Claims (18)
1. a multi-frequency antenna device is used for wireless communication transmission equipment, it is characterized in that, this multi-frequency antenna device includes:
One first width of cloth is penetrated the unit, and it is a conductive material that this first width of cloth is penetrated the unit, and with a tortuous extension, and the antenna that has one first frequency range forms, in order to control the characteristic of this first frequency range:
One second width of cloth is penetrated the unit, and it is a conductive material that this second width of cloth is penetrated the unit, and forms with an antenna that has one second frequency range, and in order to control the characteristic of this second frequency range, this first frequency range is different from this second frequency range; And,
The one feed-in width of cloth is penetrated the unit, this feed-in width of cloth is penetrated the unit and is had two ends at least, and an end makes the same feed-in of signal common of this first frequency range and this second frequency range as the signal feed side, the other end is penetrated this first width of cloth at unit and this second width of cloth and is penetrated the unit and interconnect, and forms the structure that a top loads.
2. multi-frequency antenna device according to claim 1 is characterized in that, wherein to penetrate the unit be to utilize a metallic conductor to reach to this feed-in width of cloth.
3. multi-frequency antenna device according to claim 1 is characterized in that, wherein to penetrate the unit be to utilize the substrate of a dielectric substance and a metallic conductor to reach to this feed-in width of cloth.
4. multi-frequency antenna device according to claim 3 is characterized in that, wherein this substrate has a top surface, and this metallic conductor is to be placed on this top surface of this substrate.
5. multi-frequency antenna device according to claim 3 is characterized in that, wherein this substrate has an inside, and this metallic conductor is this inside gift that is placed on this substrate.
6. multi-frequency antenna device according to claim 1 is characterized in that, wherein this first width of cloth is penetrated unit and this second width of cloth to penetrate the unit be to utilize a dielectric substance substrate and a bimetallic conductor to reach.
7. multi-frequency antenna device according to claim 6 is characterized in that, wherein this substrate has a top surface, and this bimetallic conductor is to be placed on this top surface of this substrate.
8. multi-frequency antenna device according to claim 6 is characterized in that, wherein this substrate has an inside, and this bimetallic conductor is to be placed in the inside of this substrate.
9. multi-frequency antenna device according to claim 8 is characterized in that wherein the inside of this substrate has two aspects at least, and this bimetallic conductor is to be placed on respectively on the different aspect of this inside.
10. multi-frequency antenna device according to claim 1 is characterized in that, wherein this first width of cloth is penetrated the unit and this second width of cloth is penetrated totally one plane, unit, and and this feed-in width of cloth penetrate an angle arranged between the unit.
11. multi-frequency antenna device according to claim 10 is characterized in that, wherein this angle is to spend between 180 degree between 70.
12. multi-frequency antenna device according to claim 1 is characterized in that, wherein to penetrate the unit be to be placed on the curved surface to this second width of cloth.
13. multi-frequency antenna device according to claim 1 is characterized in that, wherein to penetrate the unit be to utilize the complications extension mode of square-wave form to shorten the entire length of this antenna to this first width of cloth.
14. multi-frequency antenna device according to claim 1 is characterized in that, wherein to penetrate the unit be to utilize the complications extension mode of sawtooth waveforms shape to shorten the entire length of this antenna to this first width of cloth.
15. multi-frequency antenna device according to claim 1 is characterized in that, wherein to penetrate the unit be to utilize the complications extension mode of sine wave shape to shorten the entire length of this antenna to this first width of cloth.
16. multi-frequency antenna device according to claim 1 is characterized in that, wherein to penetrate the unit be an orthoscopic electric conductor to this second width of cloth.
17. multi-frequency antenna device according to claim 1 is characterized in that, wherein to penetrate the unit be a tortuous extension electric conductor to this second width of cloth.
18. multi-frequency antenna device according to claim 1 is characterized in that, wherein to penetrate the complications extension mode of unit be to utilize the combination be selected from square-wave form, sawtooth waveforms shape and sine wave shape to this first width of cloth, shortens the entire length of this antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01102205 CN1365161A (en) | 2001-01-17 | 2001-01-17 | Multiple frequency antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01102205 CN1365161A (en) | 2001-01-17 | 2001-01-17 | Multiple frequency antenna device |
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| Publication Number | Publication Date |
|---|---|
| CN1365161A true CN1365161A (en) | 2002-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01102205 Pending CN1365161A (en) | 2001-01-17 | 2001-01-17 | Multiple frequency antenna device |
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| CN (1) | CN1365161A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100379081C (en) * | 2004-05-14 | 2008-04-02 | 广达电脑股份有限公司 | Hidden type antenna assembly in multifrequency |
| CN100438208C (en) * | 2004-05-27 | 2008-11-26 | 三立通讯设计有限公司 | Metallic conductor for super wide band mobile terminal antenna |
| CN1964132B (en) * | 2005-11-09 | 2011-06-15 | 广达电脑股份有限公司 | A hidden multifrequency antenna for portable device |
| CN101102005B (en) * | 2007-07-17 | 2011-08-24 | 中国铁路通信信号上海工程公司 | Engine multi-frequency band antenna |
| CN102195127A (en) * | 2010-03-03 | 2011-09-21 | 神讯电脑(昆山)有限公司 | Double-frequency inverted-F-shaped antenna |
| CN101431179B (en) * | 2007-11-08 | 2012-11-07 | 神基科技股份有限公司 | Plane inverse-F shaped antenna with extension grounding surface |
| CN104380527A (en) * | 2014-06-25 | 2015-02-25 | 华为技术有限公司 | Double annular antenna and mobile terminal with same |
| CN104425900A (en) * | 2013-08-26 | 2015-03-18 | 联想(北京)有限公司 | Antenna apparatus, method for arranging the same, and electronic equipment |
-
2001
- 2001-01-17 CN CN 01102205 patent/CN1365161A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100379081C (en) * | 2004-05-14 | 2008-04-02 | 广达电脑股份有限公司 | Hidden type antenna assembly in multifrequency |
| CN100438208C (en) * | 2004-05-27 | 2008-11-26 | 三立通讯设计有限公司 | Metallic conductor for super wide band mobile terminal antenna |
| CN1964132B (en) * | 2005-11-09 | 2011-06-15 | 广达电脑股份有限公司 | A hidden multifrequency antenna for portable device |
| CN101102005B (en) * | 2007-07-17 | 2011-08-24 | 中国铁路通信信号上海工程公司 | Engine multi-frequency band antenna |
| CN101431179B (en) * | 2007-11-08 | 2012-11-07 | 神基科技股份有限公司 | Plane inverse-F shaped antenna with extension grounding surface |
| CN102195127A (en) * | 2010-03-03 | 2011-09-21 | 神讯电脑(昆山)有限公司 | Double-frequency inverted-F-shaped antenna |
| CN104425900A (en) * | 2013-08-26 | 2015-03-18 | 联想(北京)有限公司 | Antenna apparatus, method for arranging the same, and electronic equipment |
| CN104380527A (en) * | 2014-06-25 | 2015-02-25 | 华为技术有限公司 | Double annular antenna and mobile terminal with same |
| CN104380527B (en) * | 2014-06-25 | 2017-09-12 | 华为技术有限公司 | Stacked loop antenna and the mobile terminal with the stacked loop antenna |
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