CN101106213B - Multi-frequency antenna - Google Patents

Multi-frequency antenna Download PDF

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Publication number
CN101106213B
CN101106213B CN2006100410105A CN200610041010A CN101106213B CN 101106213 B CN101106213 B CN 101106213B CN 2006100410105 A CN2006100410105 A CN 2006100410105A CN 200610041010 A CN200610041010 A CN 200610041010A CN 101106213 B CN101106213 B CN 101106213B
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CN
China
Prior art keywords
antenna
frequency radiation
low frequency
multifrequency
grounding parts
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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 - Fee Related
Application number
CN2006100410105A
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Chinese (zh)
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CN101106213A (en
Inventor
苏纹枫
洪振达
王舒嬿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foxconn Kunshan Computer Connector Co Ltd
Hon Hai Precision Industry Co Ltd
Original Assignee
Foxconn Kunshan Computer Connector Co Ltd
Hon Hai Precision Industry Co Ltd
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Application filed by Foxconn Kunshan Computer Connector Co Ltd, Hon Hai Precision Industry Co Ltd filed Critical Foxconn Kunshan Computer Connector Co Ltd
Priority to CN2006100410105A priority Critical patent/CN101106213B/en
Publication of CN101106213A publication Critical patent/CN101106213A/en
Application granted granted Critical
Publication of CN101106213B publication Critical patent/CN101106213B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a multi-frequency antenna, which comprises a first antenna for wireless wan, a second antenna for wireless wan and a grounding part for both two antennas using. The low frequency of the first antenna is composed of a metal plate, a plastic part, an aluminum foil and a ceramic passive element.

Description

Multifrequency antenna
[technical field]
The invention relates to a kind of multifrequency antenna, especially refer to a kind of multifrequency antenna that is used for electronic equipments such as notebook computer.
[background technology]
Along with the high speed development of mobile communication, the volume of various electronic products is more and more littler, and is also increasingly high to the requirement of its inner member.Because the development of radio network technique; Based on GPRS (General PackerRadio Service; GPRS) and increasing the applying in the notebook computer of wireless-access mode of WLAN (Wireless Local Area Network, WLAN).
In wireless communication procedure; Antenna is a requisite critical elements; At some the portable terminal device of GPRS and WLAN bimodulus form network interface card is installed; Two antennas all can be equipped with, to adapt to the requirement of WWAN (Wireless Wide Area Network. wireless wide area network) and WLAN working frequency range respectively.Yet portable terminal devices such as notebook computer are attended by the requirement of miniaturization, so how two kinds of aerial integrations have just been become the problem of pendulum in face of the designer in limited space.In the prior art; Antenna is many with the integrated two kinds of antennas of method as shown in Figure 1; This multifrequency antenna 10 ' this multifrequency antenna 10 ' is made and is formed by a sheet metal punching press, comprises first antenna 1 ' and second antenna 2 ' and third antenna 3 ' that is used for WLAN and the 4th antenna 4 ' that are used for wireless wide area network.But two kinds of antennas of this antenna can influence each other; In today of antenna miniaturization day by day; When two kinds of antennas too near the time can since two antennas between isolation too small; Influence reason such as big each other and cause the emittance of antenna to descend, problems such as radiation frequency range reduction do not reach the requirement of miniaturization more.The design that has the material of on antenna element, introducing different medium that aerial radiation portion is shortened in the prior art, but because the length of Department of Radiation reduces, influenced the impedance matching of antenna, make the emittance of antenna reduce.TaiWan, China patent announcement TW has disclosed a kind of wide frequency range antenna for No. 253070, sees also label among Fig. 2 and the figure of this patent, and this wide frequency range antenna is through being connected in series an inductance 32 to obtain preferable impedance matching antenna arrangement 24 in.This kind mode is for to break off nearly signal output part 26 somewheres of antenna arrangement 24 fully, forms breach 30, then with an induction soldering in indentation, there, thereby two parts that antenna arrangement is broken off connect together.This antenna arrangement is easier to realize with the method for being arranged on the circuit board; But in the antenna that purposes is wider in the portable equipments such as present notebook computer a kind of planar inverted of being processed by sheet metal " F " shape antenna is arranged, this kind antenna does not have circuit board that it is supported, and such method is difficult for processing procedure for these antennas.Therefore we are necessary provides a kind of and can effectively regulate antenna impedance, simultaneously simple again method.
[summary of the invention]
The object of the invention is to provide a kind of multifrequency antenna, and it regulates the simple in structure of Antenna Impedance Matching, and processing procedure is easy, and cost is lower.
For realizing above-mentioned purpose; The present invention adopts following technical scheme: a kind of multifrequency antenna; It comprises Department of Radiation, grounding parts with two above emission bands and the connecting portion that connects said Department of Radiation and grounding parts; Said Department of Radiation is a sheet metal, and the edge of said sheet metal is provided with that a breach is used to inlay and fixing ceramic passive device.
Compared with prior art, multifrequency antenna element of the present invention has the following advantages: this multifrequency antenna makes antenna in miniaturization, can effectively keep emittance with a kind of structure that is simple and easy to implement, and processing procedure is simple.
[description of drawings]
Fig. 1 is the stereogram of prior art multifrequency antenna.
Fig. 2 is the stereogram of the preferred embodiment of multifrequency antenna of the present invention.
Fig. 3 is the stereogram of another angle of the preferred embodiment of multifrequency antenna of the present invention.
Fig. 4 is the exploded view of the preferred embodiment of multifrequency antenna of the present invention.
Fig. 5 is the preferred embodiment of multifrequency antenna of the present invention and the antenna gain curve chart that this embodiment removes the antenna of ceramic passive device formation.
[embodiment]
Fig. 2 is extremely shown in Figure 4 for accordinging to the multifrequency antenna stereogram that a kind of preferred embodiments of the present invention provided.This multifrequency antenna 1 by an antenna body 100, stick in plastic 200 and the metal forming 300 on the antenna body 100 and 400 of ceramic passive devices being welded on the antenna body 100 are formed; It comprises first antenna 2 that is used for wireless wide area network, be used for second antenna 3 of WLAN, the grounding parts 6 of two antenna duplexers, and is positioned at the installation portion 4,5 on the grounding parts 6.In the present embodiment, plastic 200, metal forming 300 and ceramic passive device 400 all are positioned on first antenna 2.The body 100 of this multifrequency antenna 1 is made by a sheet metal punching press, and wireless wide area network antenna and wireless lan antenna are together with each other.Grounding parts 6 has first grounding parts 61, from the extended L-shaped sheet metals 62 of first grounding parts 61 with have erose sheet metal 63.
First antenna 2 comprises radiating element 21, grounding parts 6, connects the connecting portion 22 of radiating element 21 and grounding parts 6 and is positioned at the lug 23 that being used on the connecting portion 22 is connected feeder line (not shown).Radiating element 21 and grounding parts 6 at interval, laterally arrange, and be positioned at the homonymy of connecting portion 22.Radiating element 21 comprises high-frequency radiation part 210 and low frequency radiation portion 212.High-frequency radiation part 210 comprises first radiation arm 2101 with triangle fluting 2101a and perpendicular to first radiation arm 2101 and second radiation arm 2102 that extends to the grounding parts direction.Low frequency radiation portion 212 is the roughly L-shaped sheet metal of an out-of-shape, its have first end 2120 that links to each other with high-frequency radiation part 210 and with 2120 opposing settings of first end and second end 2122 narrow than first end 2120.The edge of one side of first end 2120 cuts out a part and forms a breach 2121, is used to accommodate ceramic passive device 400, the second ends 2122 and pastes plastic 200 and aluminium foil 300.In the present embodiment; Plastic 200 comprises a rectangular body 201, from the raised line 202 of body 201 upper surface 201a and the extended rectangle of side 201c adjacent and from the raised line 203 of body 201 lower surface 201b and the extended rectangle of side 201c adjacent, side 201c, raised line 202, the 203 common accepting grooves of forming.Wherein the upper surface 201a of body 201 sticks in the surface with respect to grounding parts 6 of the low frequency radiation portion 212 of first antenna 2, and side 201c is adjacent with second antenna 3, and through raised line 202,203 with 3 holdings of second antenna in accepting groove.Aluminium foil 300 is " ㄈ " shape, sticks on low frequency radiation portion 212 and the plastic 200, can be divided into upper and lower wall 301,302 and sidewall 303.The opening direction of " ㄈ " shape is towards second antenna 3; It is opposing in the surface of grounding parts 6 to be that the upper wall 301 of aluminium foil 300 sticks in low frequency radiation portion 212; The another side of sidewall 303 and plastic 200 the opposing 201c in the side engages; Lower wall 302 engages with the lower surface 201b of plastic 200, and arbitrary part of aluminium foil 300 does not contact with second antenna 3.Aluminium foil 300 has increased the length of second antenna, 2 low frequency radiation portions 212, has also increased the radiation frequency range of this Department of Radiation simultaneously.Because the low frequency radiation portion 212 of first antenna 2 is near second antenna 3; For reduce the phase mutual interference between two antennas as far as possible; Through plastic 200 the low frequency radiation portion 212 of first antenna 2 and the relative position of second antenna 3 are fixed; Make both keep certain distance, also played the fixedly effect of aluminium foil 300 simultaneously.Among other embodiment, aluminium foil 300 can be replaced by other metal forming; And plastic 200 also can be according to the restriction of its installation site, and varying in size of metal forming is designed to other size and dimension.Pottery passive device 400 is positioned at breach 2121 places of low frequency radiation portion 212, and its surface has part zinc-plated regional 401, in order to 212 welding of low frequency radiation portion.Certainly among other embodiment, tin also can be replaced by other metal.Among other embodiment, ceramic passive device 400 also can be installed in other part of antenna as required, for example on the high-frequency radiation part.Lug 23 extends with grounding parts 6 parallel directions from the edge, M place of connecting portion 22, and is positioned at connecting portion 22 homonymies with grounding parts 6.
In first antenna 2, high-frequency radiation part 210 is positioned at first plane jointly with low frequency radiation portion 212.Connecting portion 22 is " Z " shape, and it extends from high-frequency radiation part 210 and low frequency radiation portion 212 junctions, and is positioned at second plane perpendicular to above-mentioned first plane.Make connecting portion 22 and high-frequency radiation part 210 be connected in the Q place with low frequency radiation portion 212, then the breach in the low frequency radiation portion 212 2121 is adjacent with the Q place, and vee 2101a then is positioned on the high-frequency radiation part 210 and the opposing side in Q place.
Second antenna 3 comprises radiating element 31, grounding parts 6, connects radiating element 31 and the connecting portion 32 of grounding parts 6 and the lug 33 that is used to be connected feeder line (not shown).Radiating element 31 comprises high-frequency radiation part 310, low frequency radiation portion 312 and the 3rd Department of Radiation 314.Wherein high-frequency radiation part 310 has a common radiation arm 3102 with low frequency radiation portion 312; High-frequency radiation part 310 also comprises a lengthwise radiation arm 3101 perpendicular to common radiation arm 3102 in addition; Low frequency radiation portion 312 comprises that also second radiation arm, 3122, the second radiation arms 3122 to the extension of lengthwise radiation arm 3101 rightabouts are " Z " shape.The 3rd Department of Radiation 314, common radiation arm 3102 are connected in the P place with connecting portion 32.Lug 33 extends along the direction that is parallel to grounding parts 6 from the P place, and is positioned at connecting portion 32 homonymies with grounding parts 6.Radiating element 31, the connecting portion 32 of second antenna 3 are positioned at same plane, and are positioned at grounding parts 6 homonymies with radiating element of first antenna 2 21 and connecting portion 22.
In the present embodiment; The high-frequency radiation part 210 of first antenna 2 is used to receive and launch the signal (being that operating frequency is the signal of 1800-1900MHZ) of upper frequency, and low frequency radiation portion 212 is used to receive and launch the signal (being that operating frequency is the signal of 900MHZ) of lower frequency.The high-frequency radiation part 310 of second antenna 3 is used to receive and launch the signal (being that operating frequency is the signal of 5GHz) of upper frequency, and 312 workers of low frequency radiation portion are used to receive and launch the signal (being that operating frequency is the signal of 2.4GHz) of lower frequency.The low frequency radiation portion 212 of the low frequency radiation portion 212 of first antenna 2 and second antenna 3 is adjacent.The radiance of antenna and its impedance matching degree are closely related; In the present embodiment; In the low frequency radiation portion 212 of first antenna 2, pasted plastic and aluminium foil, just made the antenna 2 of winning when reaching same radiation frequency and frequency range, littler volume arranged with prior art, yet because the reducing of volume; The impedance matching of first antenna 2 has also received influence, and the emittance of first antenna 2 is reduced.Therefore present embodiment welding ceramics passive device in the low frequency radiation portion 212 of first antenna 2 is again regulated the impedance matching of antenna through introducing such inductance (or capacity cell), makes the emittance of antenna be improved.Shown in Figure 5 is first antenna, 2 low frequency radiation portions, 212 welding ceramics passive devices, 400 front and back, the gain curve of low frequency radiation portion 212.After curve can be found out welding ceramics passive device 400 in the comparison diagram, the gain of antenna low frequency radiation portion had increased 2dBi nearly, and therefore the introducing of ceramic passive device 400 has increased the emittance of antenna low frequency radiation portion, has improved the performance of antenna.Simultaneously this in aerial radiation portion the method for welding ceramics passive device simple and easy to do on processing procedure, cost is also lower.Certainly, ceramic passive device not only can be used in the low frequency radiation portion of multifrequency antenna in this embodiment, and it can also be applied on the various working bands of various antenna as required.

Claims (8)

1. multifrequency antenna; It comprises Department of Radiation, grounding parts with two above emission bands and the connecting portion that connects said Department of Radiation and grounding parts; It is characterized in that: said Department of Radiation is a sheet metal; Said multifrequency antenna comprises first antenna that works in wireless wide area network and second antenna that works in WLAN; The aforementioned grounding parts of first, second antenna duplexer, said first antenna comprises the radiating element with high-frequency radiation part and low frequency radiation portion, said second antenna also comprises the radiating element with high-frequency radiation part and low frequency radiation portion; The low frequency radiation portion of said first antenna is adjacent with the low frequency radiation portion of second antenna; The low frequency radiation portion of said first antenna pastes a plastic, and plastic is fixed the low frequency radiation portion of first antenna and the relative position of second antenna, and said first antenna also has a metal forming and sticks on low frequency radiation portion and the plastic; One end of the contiguous high-frequency radiation part of the low frequency radiation portion of said first antenna has a breach, and this breach is inlayed and fixing electric capacity or inductance element.
2. multifrequency antenna as claimed in claim 1 is characterized in that: the electric capacity of said multifrequency antenna or inductance element are welded in the indentation, there of aforementioned Department of Radiation.
3. multifrequency antenna as claimed in claim 2; It is characterized in that: said first antenna has the low frequency radiation portion that high-frequency radiation part that working band falls within 1800-1900MHz and working band fall within 900MHz, and second antenna comprises that working band falls within the high-frequency radiation part of 5GHz and the low frequency radiation portion that working band falls within 2.4GHz.
4. multifrequency antenna as claimed in claim 3 is characterized in that: the high-frequency radiation part of said first antenna has triangle fluting.
5. multifrequency antenna as claimed in claim 3 is characterized in that: the aforementioned connecting portion of said multifrequency antenna is made up of with the connecting portion of Department of Radiation that is connected second antenna and grounding parts with the connecting portion of grounding parts the Department of Radiation that connects first antenna.
6. multifrequency antenna as claimed in claim 5 is characterized in that: said plastic comprises a rectangular body, from the rectangle raised line that body upper surface and side adjacent extend, and side, raised line are formed an accepting groove jointly.
7. multifrequency antenna as claimed in claim 6; It is characterized in that: the body upper surface of said plastic sticks in the surface with respect to grounding parts of the low frequency radiation portion of first antenna; The side is adjacent with second antenna, and through raised line second antenna is housed in the accepting groove.
8. multifrequency antenna as claimed in claim 3 is characterized in that: there is the zinc-plated zone of part on said electric capacity or inductance element surface, in order to weld with low frequency radiation portion.
CN2006100410105A 2006-07-14 2006-07-14 Multi-frequency antenna Expired - Fee Related CN101106213B (en)

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Application Number Priority Date Filing Date Title
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CN101106213B true CN101106213B (en) 2012-11-28

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8488541B2 (en) * 2009-10-22 2013-07-16 Scott Allen Schlack Portable transceiver device that operates as a gateway to a proprietary wireless network
TWI506862B (en) * 2010-04-28 2015-11-01 Hon Hai Prec Ind Co Ltd Multi-band antenna
CN102244318A (en) * 2010-05-12 2011-11-16 富士康(昆山)电脑接插件有限公司 Multi-frequency antenna
CN102386489B (en) * 2010-09-01 2014-07-30 富士康(昆山)电脑接插件有限公司 Multi-frequency antenna

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1742406A (en) * 2002-10-10 2006-03-01 圣韵无线技术公司 Narrow width dual/tri ISM band PIFA for wireless applications

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1742406A (en) * 2002-10-10 2006-03-01 圣韵无线技术公司 Narrow width dual/tri ISM band PIFA for wireless applications

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