CN1697253A - Hidden type antenna assembly in multifrequency - Google Patents
Hidden type antenna assembly in multifrequency Download PDFInfo
- Publication number
- CN1697253A CN1697253A CNA2004100433146A CN200410043314A CN1697253A CN 1697253 A CN1697253 A CN 1697253A CN A2004100433146 A CNA2004100433146 A CN A2004100433146A CN 200410043314 A CN200410043314 A CN 200410043314A CN 1697253 A CN1697253 A CN 1697253A
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Abstract
The antenna unit is applied to electromagnetic wave transceiver. The wave transceiver includes a case and a circuit board. The case defines an accommodation space. Installed on the accommodation space, the circuit board possesses a feedthrough port for first signal, a feedthrough port for second signal and a grounding terminal. The antenna unit includes a base plate, a first radiant element, a second radiant element and a grounding wire. The first radiant element arranged on base plate possesses a wrapped polygonal line and at least a connection line. One end of wrapped polygonal line is suitable to conduct to the feedthrough port for first signal on the circuit board. The second radiant element arranged on base plate is setup on side of the first radiant element with an interval. One end of the second radiant element is suitable to conduct to the feedthrough port for second signal. The grounding wire arranged on base plate is connected to grounding terminal on circuit board.
Description
Technical field
The present invention relates to a multi-frequency antenna device, particularly relate to a concealed multi-frequency antenna device.
Background technology
More be progressive today in mechanics of communication, communication system more and more be strict harshness to the requirement of its weight, volume, cost, usefulness and assembling difficulty, wherein, in communication system, is used to transmit, the antenna assembly of received signal is all the more so.General antenna for mobile phone can be divided into exposed and concealed two kinds haply: common exposed antenna is helical antenna (Helical Antenna) for example, and planar inverted F-shape antenna (Plannar Inverted F Antenna is hereinafter to be referred as the PIFA antenna) then is the concealed antenna that is widely used at present.
At present general mobile phone, in order to allow the user can more convenient and reception clearly, can be because the cell phone system merchant adopts different frequencies can't communication, the many trends gradually of present mobile phone possess 900MHz are arranged, the function of 1800MHz, the communication of 1900MHz multifrequency.
In order to make helical antenna be applicable to the multifrequency scope, helical antenna reaches the required frequency ratio of height frequency range, to meet the standard of 900MHz, 1800MHz and 1900MHz frequency range by the different two-part pitch of control density.Helical antenna is arranged on the shell of mobile phone when practical application, thus easily impaired because of exposing, influence communication quality.And the size of PIFA antenna is big more, and its characteristic is good more; PIFA antenna distance ground plane is far away more, and its frequency range is big more.But when the PIFA antenna applications was on microminiaturized mobile phone day by day, its HFS (1800MHz, 1900MHz) regular meeting suffered from the problem of frequency range deficiency.And because 1800MHz is the frequency multiplication of 900MHz, so when signal transmits, be easy to the phenomenon that interferes with each other because of even-order harmonic that 900MHz produces, can effectively avoid the multi-frequency antenna device that the frequency multiplication interference phenomenon takes place and through-put power is preferable, frequency range is bigger so how to design one, be the direction of demanding urgently making great efforts.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of multifrequency concealed antenna device that can effectively improve the 900MHz frequency range to the even-order harmonic interference of 1800MHz frequency range.
Multifrequency concealed antenna device of the present invention, be applied to an electromagnetic wave transceiver, this electromagnetic wave transceiver comprises that one defines the housing of an accommodation space, and a circuit board, be installed in this accommodation space, have one first signal feed-in port, a secondary signal feed-in port and a grounding ports.This multifrequency concealed antenna device comprises a substrate, one first radiant element, one second radiant element, and an earth connection.
Wherein, first radiant element is laid on the substrate, have one around broken line and at least one connecting line, around broken line in an interval, circle back and forth and be formed with a plurality of horizontal segments and a plurality of vertical section, the two ends of connecting line are electrically connected with any two horizontal segments, and have one first end and one and this first second opposed end around broken line, and this first end is suitable for connecting the first signal feed-in port to circuit board; Second radiant element is laid on the substrate, is arranged at intervals at by first radiant element, has one the 3rd end and four end relative with the 3rd end, and the 3rd end is suitable for connecting the secondary signal feed-in port to circuit board; Earth connection is laid on the substrate, has a five terminal and six end relative with this five terminal, and five terminal is electrically connected with first radiant element, and the 6th end is suitable for connecting the grounding ports to circuit board.
Description of drawings
Fig. 1 is a three-dimensional exploded view, and multifrequency concealed antenna device of the present invention is described;
Fig. 2 is a three-dimensional exploded view, and the assembled state of a substrate and a circuit board of multifrequency concealed antenna device of the present invention is described;
Fig. 3 is a schematic diagram, illustrates that each element on this substrate is laid state;
Fig. 4 is a schematic diagram, and the measurement result of the voltage standing wave ratio of this preferred embodiment is described;
Fig. 5 is a schematic diagram, illustrates that this preferred embodiment is in 920MHz radiation pattern measurement result; And
Fig. 6 is a schematic diagram, illustrates that this preferred embodiment is in 1800MHz radiation pattern measurement result.
Embodiment
Aforementioned and other technology contents, feature and advantage of the present invention in the following detailed description that cooperates with reference to each graphic preferred embodiment, can clearly be understood.
Consult Fig. 1,2, multifrequency concealed antenna device 3 of the present invention is applied to a mobile phone 1, this mobile phone 1 comprises that one defines the housing 11 of an accommodation space 2, and a cover plate 12 that can be arranged on the housing 11, wherein, the longitudinal cross-section of this cover plate 12 is long-pending slightly L shaped, has a curved surface 121, multifrequency concealed antenna device 3 comprises a substrate 31, a circuit board 32, and a conductive module 33, and wherein this conductive module 33 has first conductive unit 331, second conductive unit 332, the 3rd conductive unit 333.
Consult Fig. 1-3, substrate 31 is a flexible printed wiring board (Flexible Printed Circuit Board, FPCB), therefore plant the pliability that the flexible printed wiring board material is had, make substrate 31 can closely depend on the curved surface 121 of cover plate 12, and improved traditional printing circuit board (PCB) effectively because of not bent more space consuming shortcoming.Being laid with one first radiant element 34, its working band of design that its working band of design is 900MHz on the substrate 31 is one second radiant element 35 of 1800MHz and 1900MHz, and an earth connection 36.
First radiant element 34, have one around broken line 341 and a plurality of connecting line 342, around broken line 341 is in an interval, circle back and forth and be formed with a plurality of horizontal segments and a plurality of vertical section, so can be under a limited area, reach and when 900MHz, to form the required track lengths of a resonance mode, and dwindled the wiring area effectively.Wherein, this first radiant element 34 has disturbed the communication quality of 1800MHz in order to improve the even-order harmonic (harmonic) that produces because of 900MHz, so the two ends that utilize each connecting line 342 are electrically connected with separately two horizontal segments respectively, by the electromagnetic coupled phenomenon that it produced, make the resonance frequency of even-order harmonic greater than 1800MHz, even greater than 1900MHz, thereby eliminated the Harmonic Interference of 900MHz effectively to 1800MHz, improved the communication quality of 1800MHz.Wherein, what deserves to be explained is that in the present embodiment, first radiant element 34 has 3 connecting lines 342, but this each connecting line 342 also can be provided with one, two, or other number; Look closely the reception effect of the signal transmission that is relevant to this first radiant element 34 and decide, not exceeding with this embodiment exposure.
Consult Fig. 1-3, wherein circuit board 32 is installed in this accommodation space 2, is laid with one first signal feed-in port 321, a secondary signal feed-in port 322, a grounding ports 323 and other electronic component (because of non-feature of the present invention is died not shown) in order to produce the mobile phone holding function on the circuit board 32.
This has one first end 343 and one and first end, 343 second opposed end 344 around broken line 341, this first end 343 is crimped on first conductive unit 331 of a conductive module 33, and utilizes the transmission of first conductive unit 331 through the radiofrequency signal of first radiant element, 34 transmitting-receivings one first signal feed-in port 321 to circuit board 32.It is other that second radiant element 35 is laid in first radiant element 34 at intervals, it is a slightly L-shaped line segment, have one the 3rd end 351 and four end 352 relative with the 3rd end 351, the 3rd end 351 is crimped on second conductive unit 332 of a conductive module 33, utilizes the transmission of second conductive unit 332 through the radiofrequency signal of second radiant element, the 35 transmitting-receivings secondary signal feed-in port 322 to circuit board 32.Earth connection 36 has a five terminal 361 and six end 362 relative with five terminal 361, five terminal 361 is electrically connected with first radiant element 34, the 6th end 362 is crimped on the 3rd conductive unit 333 of a conductive module 33, and this 3rd conductive unit 333 is electrically connected to the grounding ports 323 on the circuit board 32.
Thus, the first signal feed-in port 321 and secondary signal feed-in port 322 are used to receive and transmit the radiofrequency signal of receiving and dispatching via first radiant element 34 and second radiant element 35 respectively, wherein, what deserves to be explained is, first radiant element of this concealed antenna and second radiant element have signal feed-in point separately respectively, can be electrically connected with corresponding signal feed-in port.The electromagnetic wave signal of different frequency bands then is the radiant element of difference feed-in correspondence, produces so can reduce the phenomenon of coupling between each radiant element, interference, therefore can adjust the characteristic of each radiant element respectively.
Because the signal that first radiant element 34 and second radiant element 35 receive and launch, all be to receive and dispatch by a signal transmitting and receiving unit that is electrically connected with first, second signal feed-in port 321,322 (figure does not show), so each signal feed-in port 321,322 also can be electrically connected each other, reach the effect of signal transmitting and receiving, but do not exceed with the present embodiment revealer.
Consult Fig. 2,3, first, second, third conductive unit 331,332,333 of conductive module 33, be installed on this circuit board 32, be used for first, second signal feed-in port 321,322 as circuit board 32, and first end 343, the 3rd end 351 of second radiant element 35 of corresponding first radiant element 34 on grounding ports 323 and the substrate 31, and the bridge of the signal transmission of 362 at the 6th end of earth connection 36.
Consult Fig. 2, wherein, first, second, third conductive unit 331,332,333 is corresponding end points first end 343, the 3rd end 351 and the 6th end 362 on the contact substrate 31 closely.So, can simplify the numerous and diverse number of assembling steps of circuit board 32 and substrate 31.Wherein, what deserves to be explained is that this conductive module 33 also can utilize the flexible member of other state to reach identical functions, not with exceeding of disclosing in the present embodiment.
Consult Fig. 3, in addition, for the through-put power of strengthening antenna and the frequency bandwidth that increases the signal transmission, first radiant element 34 and second radiant element 35, also has an impedance matching module 37 respectively, respectively in order to coupling by the 3rd end 351 sees of first end 343 of first radiant element 34 and second radiant element 35 into impedance, to obtain maximum through-put power and bigger frequency range.Wherein, what deserves to be explained is that this each impedance matching module 37 can be distinguished installing optionally, is not with exceeding that present embodiment discloses.
Consult Fig. 4 for disclosing voltage standing wave ratio of the present invention (voltage standing wave ratio, VSWR) measurement result, from measurement result, can find, its operation frequency range is in the measured value of 880MHz～960MHz and 1710MHz～1990MHz, all be near or below 2.6: 1, be to have good effect, Fig. 5,6 what disclosed is the radiation pattern that this preferred embodiment operates in 920MHz and 1800MHz respectively, from the result as can be known, this preferred embodiment is when these frequency band operations, its horizontal section has an omni-directional and on each angle, all has good gain performance.
Conclude above-mentioned, multifrequency concealed antenna device 1 of the present invention, be to utilize in first radiant element 34, have many cloth line states that connect respectively around the connecting line 342 of broken line 341 any two horizontal segments, according to the electromagnetic coupling effect that it produced, overcome the 900MHz frequency range effectively the even-order harmonic of 1800MHz frequency range has been disturbed, and when on the measurement result of radiation pattern, good performance has been arranged at the voltage standing wave(VSW) of 900MHz, 1800MHz and 1900MHz adjacent frequency band.Therefore, multifrequency concealed antenna device of the present invention is produced on has on the flexual flexible printed wiring board, can dwindle antenna volume, to realize the less three-frequency mobile phone of volume.
In addition, utilize conductive module 33 to simplify effectively and connect and be positioned at first radiant element 34 of 1 on the substrate, one second radiant element 35, an and earth connection 36, with be positioned at the first signal feed-in port 321 of 1 on the circuit board, a secondary signal feed-in port 322, and the manufacturing process of a grounding ports 323.
Above-described only is preferred embodiment of the present invention, can not limit scope of the invention process with this, and all simple equivalent of being done according to claim of the present invention and description of the invention content change and modify, and all should still belong in the scope that patent of the present invention contains.
Claims (8)
1, a kind of multifrequency concealed antenna device, be applied to an electromagnetic wave transceiver, this electromagnetic wave transceiver comprises that one defines the housing of an accommodation space, an and circuit board, be installed in this accommodation space, have one first signal feed-in port, a secondary signal feed-in port and a grounding ports, this multifrequency concealed antenna device comprises:
One substrate;
One first radiant element, be laid on this substrate, have one around broken line and at least one connecting line, should be in an interval around broken line, circle back and forth and be formed with a plurality of horizontal segments and a plurality of vertical section, the two ends of this connecting line are electrically connected with any two horizontal segments, and should have one first end and one and this first end second opposed end around broken line, and this first end is the first signal feed-in port that is suitable for connecting to this circuit board;
One second radiant element is laid on this substrate, is arranged at intervals at by this first radiant element, has one the 3rd end and four end relative with the 3rd end, and the 3rd end is the secondary signal feed-in port that is suitable for connecting to this circuit board; And
One earth connection is laid on this substrate, has a five terminal and six end relative with this five terminal, and this five terminal is electrically connected with this first radiant element, and the 6th end is suitable for connecting the grounding ports to this circuit board.
2, multifrequency concealed antenna device as claimed in claim 1, wherein, this substrate is a flexible printed wiring board (Flexible Printed Circuit Board FPCB).
3, multifrequency concealed antenna device as claimed in claim 1, wherein, this substrate closely is attached on the cover plate that is arranged in this housing.
4, multifrequency concealed antenna device as claimed in claim 1 wherein, also is provided with an impedance matching module cloth on this first radiant element.
5, multifrequency concealed antenna device as claimed in claim 1 wherein, also is provided with an impedance matching module cloth on this second radiant element.
6, multifrequency concealed antenna device as claimed in claim 1, wherein, this first radiant element can move in first frequency band.
7, multifrequency concealed antenna device as claimed in claim 1, wherein, this second radiant element can be different from second frequency band of first frequency band one and move.
8, multifrequency concealed antenna device as claimed in claim 1, wherein, first signal feed-in port of this circuit board and the conducting each other of secondary signal feed-in port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100433146A CN100379081C (en) | 2004-05-14 | 2004-05-14 | Hidden type antenna assembly in multifrequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100433146A CN100379081C (en) | 2004-05-14 | 2004-05-14 | Hidden type antenna assembly in multifrequency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1697253A true CN1697253A (en) | 2005-11-16 |
| CN100379081C CN100379081C (en) | 2008-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100433146A Expired - Fee Related CN100379081C (en) | 2004-05-14 | 2004-05-14 | Hidden type antenna assembly in multifrequency |
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| Country | Link |
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| CN (1) | CN100379081C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101740878A (en) * | 2008-11-14 | 2010-06-16 | 深圳富泰宏精密工业有限公司 | Multi-frequency antenna |
| CN102651498A (en) * | 2011-02-28 | 2012-08-29 | Tdk株式会社 | Antenna device |
| CN102821565A (en) * | 2012-07-31 | 2012-12-12 | 深圳光启创新技术有限公司 | Electronic equipment and enclosure thereof |
| CN102821570A (en) * | 2012-07-31 | 2012-12-12 | 深圳光启创新技术有限公司 | Electronic apparatus and housing thereof |
| CN102044748B (en) * | 2009-10-12 | 2013-04-17 | 宏碁股份有限公司 | Mobile communication device and antenna thereof |
| CN101816095B (en) * | 2007-05-31 | 2013-12-11 | 惠普开发有限公司 | High isolation antenna design for reducing frequency coexistence interference |
| CN108075796A (en) * | 2016-11-15 | 2018-05-25 | 和硕联合科技股份有限公司 | Wireless transceiver and antenna unit thereof |
| CN108899634A (en) * | 2018-06-07 | 2018-11-27 | 普联技术有限公司 | A kind of IFA antenna and communication equipment |
| CN110767988A (en) * | 2018-07-26 | 2020-02-07 | 广达电脑股份有限公司 | Antenna structure |
| CN111478038A (en) * | 2020-05-25 | 2020-07-31 | 常熟正昊电子科技有限公司 | Broadband S-band antenna assembly |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089005A (en) * | 1977-01-10 | 1978-05-09 | Motorola, Inc. | Dual frequency antenna |
| US6239765B1 (en) * | 1999-02-27 | 2001-05-29 | Rangestar Wireless, Inc. | Asymmetric dipole antenna assembly |
| CN1365161A (en) * | 2001-01-17 | 2002-08-21 | 财团法人工业技术研究院 | Multiple frequency antenna device |
| CN1222077C (en) * | 2002-01-09 | 2005-10-05 | 广达电脑股份有限公司 | Conceal antenna of fold type cellular phone |
| CN1452271A (en) * | 2002-04-19 | 2003-10-29 | 广达电脑股份有限公司 | Built-in multiband antenna |
-
2004
- 2004-05-14 CN CNB2004100433146A patent/CN100379081C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101816095B (en) * | 2007-05-31 | 2013-12-11 | 惠普开发有限公司 | High isolation antenna design for reducing frequency coexistence interference |
| CN101740878A (en) * | 2008-11-14 | 2010-06-16 | 深圳富泰宏精密工业有限公司 | Multi-frequency antenna |
| CN101740878B (en) * | 2008-11-14 | 2013-05-29 | 深圳富泰宏精密工业有限公司 | Multi-frequency antenna |
| CN102044748B (en) * | 2009-10-12 | 2013-04-17 | 宏碁股份有限公司 | Mobile communication device and antenna thereof |
| CN102651498A (en) * | 2011-02-28 | 2012-08-29 | Tdk株式会社 | Antenna device |
| CN102821565A (en) * | 2012-07-31 | 2012-12-12 | 深圳光启创新技术有限公司 | Electronic equipment and enclosure thereof |
| CN102821570A (en) * | 2012-07-31 | 2012-12-12 | 深圳光启创新技术有限公司 | Electronic apparatus and housing thereof |
| CN108075796A (en) * | 2016-11-15 | 2018-05-25 | 和硕联合科技股份有限公司 | Wireless transceiver and antenna unit thereof |
| CN108899634A (en) * | 2018-06-07 | 2018-11-27 | 普联技术有限公司 | A kind of IFA antenna and communication equipment |
| CN110767988A (en) * | 2018-07-26 | 2020-02-07 | 广达电脑股份有限公司 | Antenna structure |
| CN110767988B (en) * | 2018-07-26 | 2021-11-09 | 广达电脑股份有限公司 | Antenna structure |
| CN111478038A (en) * | 2020-05-25 | 2020-07-31 | 常熟正昊电子科技有限公司 | Broadband S-band antenna assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100379081C (en) | 2008-04-02 |
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