CN104167594A - Broadband antenna and radio communication device applied with broadband antenna - Google Patents
Broadband antenna and radio communication device applied with broadband antenna Download PDFInfo
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- CN104167594A CN104167594A CN201310186335.2A CN201310186335A CN104167594A CN 104167594 A CN104167594 A CN 104167594A CN 201310186335 A CN201310186335 A CN 201310186335A CN 104167594 A CN104167594 A CN 104167594A
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- linkage section
- radiant body
- frequency antenna
- wide frequency
- feeding portion
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Abstract
The invention provides a broadband antenna which comprises a first radiator body, a second radiator body, a third radiator body, a feed-in portion and a grounding portion, wherein the second radiator body and the third radiator body are connected through the first radiator body; the second radiator body and the third radiator body are symmetrically arranged at the two ends of the first radiator body respectively; the feed-in portion is connected at one end, away from the first radiator body, of the second radiator body; and the grounding portion is connected at one end, away from the first radiator body, of the third radiator body. The invention further provides a radio communication device applied with the broadband antenna. The broadband antenna is small in size and good in transmission characteristic.
Description
Technical field
The present invention relates to a kind of antenna, particularly a kind of wide frequency antenna and apply the radio communication device of this wide frequency antenna.
Background technology
At mobile phone, personal digital assistant (personal digital assistant, etc. PDA) in radio communication device, antenna, as in order to by the parts of the radio wave transmitting/receiving wireless signal of telecommunication, is undoubtedly one of most important assembly in radio communication device.Existing wide frequency antenna generally includes feeding portion, grounding parts, the first radiant body, the second radiant body and the 3rd radiant body and realizes wideband.But along with the increase of screen size, dwindling of antenna headroom district is imperative, in addition, antenna hardware around, as USB (Universal Serial BUS, USB) interface also easily exerts an influence to antenna.How utilizing narrow and small antenna headroom district design wide frequency antenna and can effectively reduce hardware around the impact of wide frequency antenna is faced to many challenges, is an important topic important and urgent need solves.
Summary of the invention
In view of this, be necessary the wide frequency antenna that provides a kind of transmission characteristic good.
In addition, be also necessary to provide a kind of radio communication device of applying described wide frequency antenna.
A kind of wide frequency antenna, this wide frequency antenna comprises the first radiant body, the second radiant body, the 3rd radiant body, feeding portion and grounding parts, this second radiant body, the 3rd radiant body are connected by the first radiant body, and this second radiant body and the 3rd radiant body are symmetricly set in the first radiant body two ends; This feeding portion is connected in the second radiant body one end away from the first radiant body, and this grounding parts is connected in the 3rd radiant body one end away from the first radiant body.
A kind of radio communication device, it comprises substrate and wide frequency antenna, this substrate is provided with load point and earth point, this load point, earth point are connected with wide frequency antenna, this wide frequency antenna comprises the first radiant body, the second radiant body, the 3rd radiant body, feeding portion and grounding parts, this second radiant body, the 3rd radiant body are connected by the first radiant body, and this second radiant body and the 3rd radiant body are symmetricly set in the first radiant body two ends; This feeding portion is connected in the second radiant body one end away from the first radiant body, and this grounding parts is connected in the 3rd radiant body one end away from the first radiant body.
The feeding portion of above-mentioned wide frequency antenna is connected in the second radiant body one end away from the first radiant body, and this grounding parts is connected in the 3rd radiant body one end away from the first radiant body, make by the CURRENT DISTRIBUTION of wide frequency antenna even, thereby this wide frequency antenna transmission characteristic is good.
Brief description of the drawings
Fig. 1 is the stereogram of the wide frequency antenna of the present invention's the first preferred embodiments;
Fig. 2 is the stereogram of the wide frequency antenna other direction shown in Fig. 1;
Fig. 3 is the return loss schematic diagram of the wide frequency antenna shown in Fig. 1;
Fig. 4 is the stereogram of the wide frequency antenna of the present invention's the second preferred embodiments.
Main element symbol description
| Wide frequency antenna | 10、200 |
| Substrate | 30 |
| Load point | 302 |
| Earth point | 304 |
| Headroom district | 32 |
| USB (universal serial bus) | 34 |
| The first radiant body | 11、210 |
| The second radiant body | 12 |
| The first linkage section | 121 |
| The second linkage section | 122 |
| The 3rd linkage section | 123 |
| The 4th linkage section | 124 |
| The 5th linkage section | 125 |
| The 6th linkage section | 126 |
| The 7th linkage section | 127 |
| The 8th linkage section | 128 |
| The 9th linkage section | 129 |
| The 3rd radiant body | 13 |
| The first adapter section | 131 |
| The second adapter section | 132 |
| The 3rd adapter section | 133 |
| The 4th adapter section | 134 |
| The 5th adapter section | 135 |
| The 6th adapter section | 136 |
| The 7th adapter section | 137 |
| The 8th adapter section | 138 |
| The 9th adapter section | 139 |
| Feeding portion | 15 |
| Grounding parts | 17 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1 and Fig. 2, wide frequency antenna 10 of the present invention is arranged on the substrate 30 in the radio communication device such as mobile phone, personal digital assistant (personal digital assistant, PDA), in order to the transmitting/receiving wireless signal of telecommunication.This substrate 30 is a printed circuit board (PCB) (Printed Circuit Board, PCB), and load point 302, earth point 304, headroom district 32 and USB (Universal Serial BUS, USB) interface 34 is set on it.In the present embodiment, this headroom district 32 is formed at one end of substrate 30.The region existing without conductor on these headroom district 32 finger substrates 30, in order to prevent in external environment that electronic building brick is as battery, vibrator, loudspeaker, charge coupled device (Charge Coupled Device, etc. CCD) wide frequency antenna 10 is produced and disturbed, cause its operating frequency skew or radiation efficiency step-down.
The wide frequency antenna 10 of first embodiment of the invention comprises the first radiant body 11, the second radiant body 12, the 3rd radiant body 13, feeding portion 15 and grounding parts 17.
This first radiant body 11 is rectangle sheet, and its two ends are connected with respectively the second radiant body 12 and the 3rd radiant body 13.In the present embodiment, the length of this first radiant body 11 is about 10mm.
This second radiant body 12 is loop structure, and this second radiant body 12 comprises the first linkage section 121, the second linkage section 122, the 3rd linkage section 123, the 4th linkage section 124, the 5th linkage section 125, the 6th linkage section 126, the 7th linkage section 127, the 8th linkage section 128 and the 9th linkage section 129 that connect successively.This first linkage section 121, the 7th linkage section 127, the 8th linkage section 128 and the 9th linkage section 129 are positioned at same plane, described the second linkage section 122, the 3rd linkage section 123, the 4th linkage section 124, the 5th linkage section 125 and the 6th linkage section 126 are positioned at same plane, and perpendicular to the plane at this first linkage section 121, the 7th linkage section 127, the 8th linkage section 128 and the 9th linkage section 129 places.This first linkage section 121 is by coplanar the extending in one end of the first radiant body 11, and the width of this first linkage section 121 is less than the first radiant body 11.This second linkage section 122 is extended towards the direction of interface 34 by end one side of the first linkage section 121.The 3rd linkage section 123 is vertically extended away from the direction of USB interface 34 by the end one side court of the second linkage section 122.In the present embodiment, the length of the 3rd linkage section 123 is about 20mm.The 4th linkage section 124 is parallel to the second linkage section 122 and extends along the direction near the first linkage section 121.One end of the 5th linkage section 125 is vertically extended towards the direction of USB interface 34 by the end of the 4th linkage section 124, and the 5th linkage section 125 is roughly a U-shaped structure, and its opening is towards deviating from the direction of the second linkage section 122.The 6th linkage section 126 is vertically extended away from the direction of the 4th linkage section 124 by the end one side court of the 5th linkage section 125, and the bearing of trend of the 6th linkage section 126 and the 4th linkage section 124 point-blank.The 7th linkage section 127 is connected in the end of the 6th linkage section 126, and extends towards the first linkage section 121, and the bearing of trend of the 7th linkage section 127 and the first linkage section 121 is on same straight line.The 8th linkage section 128 is parallel to the 7th linkage section 127 perpendicular to the 7th linkage section 127, the nine linkage sections 129 and extends towards the direction away from the 8th linkage section 128.In this enforcement, the length of the 8th linkage section 128 is about 4mm.In the present embodiment, the distance of the 7th linkage section 127 and the 9th linkage section 129 is 0.65mm.
The 3rd radiant body 13 and the second radiant body 12 shapes and structure are with respect to the first radiant body 11 symmetries.Described the second radiant body 12 and the 3rd radiant body 13 all adopt loop structure, so that this wide frequency antenna 10 forms multi-mode resonance at high frequency, thereby increase high frequency frequency range.
This feeding portion 15 is straight strip, its one end and the second radiant body 12 the 9th linkage section 129 is vertical is connected, the other end is connected in the load point on substrate 30.
This grounding parts 17 first radiant body 11 relative to feeding portion 15 is symmetrical arranged, and vertical connection of end of these grounding parts 17 one end and the 3rd radiant body 13, the other end is arranged on substrate 30.
Described feeding portion 15 and grounding parts 17 lay respectively at the two ends of substrate 30, described USB interface 34 is positioned at the position of feeding portion 15 with the centre of grounding parts 17 or roughly, make feeding portion 15, grounding parts 17 away from USB interface 34, can reduce like this interference to feeding portion 15 of electric current in USB interface 34, can make again the electric current that flows through this wide frequency antenna 10 more be uniformly distributed to reduce absorption rate (Specific Absorption Rate, SAR).
In the time that the current circuit forming between feeding portion 15, the second radiant body 12, the first radiant body 11, the 3rd radiant body 13 and grounding parts 17 has electric current to pass through, this second radiant body 12 and the 3rd radiant body 13 can inspire a low-frequency resonance mode, thereby can make wide frequency antenna 10 receive and dispatch a low frequency signal, as the centre frequency wireless signal (as GSM frequency range) that is 900MHz; This second radiant body 12 can inspire one first high-frequency resonance mode, thereby can make wide frequency antenna 10 receive and dispatch one first high-frequency signal, as the centre frequency wireless signal (as DCS/PCS frequency range) that is 1710MHz; This second radiant body 12 and the 3rd radiant body 13 also can inspire one second high-frequency resonance mode, thereby can make wide frequency antenna 10 receive and dispatch one second high-frequency signal, as the centre frequency wireless signal (as WCDMA frequency range) that is 2170MHz.
Refer to Fig. 3, be depicted as return loss (Return Loss, RL) the simulation result schematic diagram of present embodiment wide frequency antenna 10.As seen from the figure, this wide frequency antenna 10 all can meet Antenna Design requirement under GSM/DCS/PCS/WCDMA working frequency range.
Preferably, between this grounding parts 17 and this earth point, be electrically connected with the match circuit of inductance or electric capacity composition, adjust operation frequency range and the matched impedance of this wide frequency antenna 10 by this match circuit.
Refer to Fig. 4, Figure 4 shows that the wide frequency antenna 200 of second embodiment of the invention.Wide frequency antenna 200 is only with wide frequency antenna 10 differences: the first radiant body 210 of this wide frequency antenna 200 is roughly tortuous square-wave-shaped.The first radiant body 210 of this complications square-wave-shaped can change the impedance matching of wide frequency antenna 100, alternatively adds match circuit at feeding portion 15 with this.
Wide frequency antenna 10 of the present invention is by the middle part in headroom district 32, USB interface being set, and feeding portion 15 is arranged on substrate 30 two ends with grounding parts 17, can reduce the interference to feeding portion 15 of electric current in USB interface.These the first radiant body 11 two ends connect respectively the second radiant body 12, the 3rd radiant body 13 simultaneously, the second radiant body 12 connects feeding portion 15 away from one end of the first radiant body 11, the 3rd radiant body 13 connects grounding parts 17 away from one end of the first radiant body 11, so, feeding portion 15 and grounding parts 17 are arranged at respectively the integrally-built opposite end of wide frequency antenna, make by the CURRENT DISTRIBUTION of wide frequency antenna 10 even, thereby this wide frequency antenna 10 has good transmission characteristic.
Claims (8)
1. a wide frequency antenna, this wide frequency antenna comprises feeding portion, grounding parts, the first radiant body, the second radiant body and the 3rd radiant body, it is characterized in that: this second radiant body, the 3rd radiant body are connected by the first radiant body, and this second radiant body and the 3rd radiant body are symmetricly set in the first radiant body two ends; This feeding portion is connected in the second radiant body one end away from the first radiant body, and this grounding parts is connected in the 3rd radiant body one end away from the first radiant body.
2. wide frequency antenna as claimed in claim 1, is characterized in that: this wide frequency antenna, by the second radiant body transmitting-receiving one first high-frequency work frequency, is received and dispatched a low frequency operation frequency and one second high-frequency work frequency by the second radiant body, the 3rd radiant body.
3. wide frequency antenna as claimed in claim 1, is characterized in that: this first radiant body is a rectangle sheet or tortuous wavy.
4. wide frequency antenna as claimed in claim 1, is characterized in that: described the second radiant body and the 3rd radiant body are loop structure.
5. wide frequency antenna as claimed in claim 4, it is characterized in that: this second radiant body comprises the first linkage section connecting successively, the second linkage section, the 3rd linkage section, the 4th linkage section, the 5th linkage section, the 6th linkage section, the 7th linkage section, the 8th linkage section and the 9th linkage section, this first linkage section is extended by the first radiant body, the bearing of trend of this second linkage section is perpendicular to the plane at this first radiant body and the first linkage section place, the 3rd linkage section is parallel to the first linkage section and extends along the direction away from the first linkage section, the 4th linkage section is parallel to the second linkage section and extends along the direction near the first linkage section, the 5th linkage section is a U-shaped structure, its opening is towards deviating from the direction of the first radiant body, the bearing of trend of the 6th linkage section and the 4th linkage section point-blank, the 7th linkage section and the first linkage section bearing of trend are on same straight line, the 8th linkage section is perpendicular to the 7th linkage section, the 9th linkage section is parallel to the 7th linkage section and extends towards the direction away from the first radiant body.
6. a radio communication device, it comprises substrate and wide frequency antenna, this substrate is provided with load point and earth point, it is characterized in that: described wide frequency antenna is the wide frequency antenna described in any one in claim 1 ~ 5; This load point is electrically connected to the feeding portion of this wide frequency antenna; This earth point is electrically connected to the grounding parts of this wide frequency antenna.
7. radio communication device as claimed in claim 6, is characterized in that: on described substrate, be also provided with a USB (universal serial bus), this USB (universal serial bus) is arranged on the centre of feeding portion and the grounding parts of this wide frequency antenna.
8. radio communication device as claimed in claim 7, it is characterized in that: this radio communication device also comprises match circuit, this match circuit is electrically connected between the load point of substrate and the feeding portion of wide frequency antenna, and this match circuit is in order to regulate operation frequency range and the matched impedance of wide frequency antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310186335.2A CN104167594B (en) | 2013-05-20 | 2013-05-20 | The wireless communication device of wide frequency antenna and the application wide frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310186335.2A CN104167594B (en) | 2013-05-20 | 2013-05-20 | The wireless communication device of wide frequency antenna and the application wide frequency antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104167594A true CN104167594A (en) | 2014-11-26 |
| CN104167594B CN104167594B (en) | 2018-09-25 |
Family
ID=51911315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310186335.2A Expired - Fee Related CN104167594B (en) | 2013-05-20 | 2013-05-20 | The wireless communication device of wide frequency antenna and the application wide frequency antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104167594B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105591187A (en) * | 2014-11-10 | 2016-05-18 | 三星电机株式会社 | Antenna Module And Antenna Assembly Including The Same |
| CN108173000A (en) * | 2016-12-07 | 2018-06-15 | 深圳富泰宏精密工业有限公司 | Antenna structure and the wireless communication device with the antenna structure |
| CN111755811A (en) * | 2019-03-28 | 2020-10-09 | 国巨电子（中国）有限公司 | Dual band antenna |
| CN112259982A (en) * | 2020-08-31 | 2021-01-22 | 无锡盈达聚力科技有限公司 | Hand-held terminal |
| WO2023246295A1 (en) * | 2022-06-20 | 2023-12-28 | 荣耀终端有限公司 | Terminal antenna and electronic device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591187A (en) * | 2014-11-10 | 2016-05-18 | 三星电机株式会社 | Antenna Module And Antenna Assembly Including The Same |
| CN108173000A (en) * | 2016-12-07 | 2018-06-15 | 深圳富泰宏精密工业有限公司 | Antenna structure and the wireless communication device with the antenna structure |
| CN111755811A (en) * | 2019-03-28 | 2020-10-09 | 国巨电子（中国）有限公司 | Dual band antenna |
| CN112259982A (en) * | 2020-08-31 | 2021-01-22 | 无锡盈达聚力科技有限公司 | Hand-held terminal |
| CN112259982B (en) * | 2020-08-31 | 2022-07-26 | 无锡盈达聚力科技有限公司 | Hand-held terminal |
| WO2023246295A1 (en) * | 2022-06-20 | 2023-12-28 | 荣耀终端有限公司 | Terminal antenna and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104167594B (en) | 2018-09-25 |
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Granted publication date: 20180925 Termination date: 20190520 |