CN2919565Y - Built-in triple-frequency mobile phone antenna based on multi-branched band spread technology - Google Patents
Built-in triple-frequency mobile phone antenna based on multi-branched band spread technology Download PDFInfo
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- CN2919565Y CN2919565Y CNU2006200554696U CN200620055469U CN2919565Y CN 2919565 Y CN2919565 Y CN 2919565Y CN U2006200554696 U CNU2006200554696 U CN U2006200554696U CN 200620055469 U CN200620055469 U CN 200620055469U CN 2919565 Y CN2919565 Y CN 2919565Y
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- mobile phone
- microstrip line
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Abstract
The utility model relates to a built-in mobile phone antenna based on branchy spread spectrum comprising a radiated element(1), a slender 50-ohm microstrip line(2), a dielectric layer of mobile phone circuit board(3) and a floorboard(4), wherein the radiated element(1) is provided with two ''*'' shaped copper sheet removal cracks (5) and a gap(6), the cracks(5) are arranged in the opening of the gap(6), a microstrip an is formed by the microstrip line at the outer margin of the gap(6), a microstrip b is formed by the microstrip between the cracks(5) and the gap(6), a microstrip c is formed by the microstrip in the cracks(5). The microstrip c is resonated at the high frequency(1800 MHz), and the microstrip a and microstrip b are resonated at low frequency (900 MHz) and high frequency (1800 MHz) simultaneously. The utility model has the advantages of small size, light weight, convenient processing and low cost, and which can meet the requirements of the tri-band bandwidth of GSM900, DCS1800 and WCDMA.
Description
Technical field
The utility model relates to a kind of antenna for mobile phone, specifically relates to a kind ofly can work in GSM900 simultaneously, the built-in antenna of cell phone based on the racemosus spread spectrum of DCS1800 and three frequency ranges of WCDMA.
Background technology
Antenna for mobile phone is as the requisite some of mobile phone, and the quality of antenna performance greatly influences the communication quality of mobile phone.The same with mobile phone, antenna for mobile phone just develops towards light, thin, short, little direction.Though traditional external monopole antenna performance is good, the mobile phone that relative volume is day by day dwindled, it is too big that size seems, and damage easily.Built-in aerial becomes the main flow direction of following antenna for mobile phone development.The built-in mobile phone antenna mainly comprises general microstrip antenna, planar inverted-F antenna or the like at present.As everyone knows, antenna size is big more, and antenna characteristics is good more, and frequency band is also widened easily.So, when reducing antenna size, keep bandwidth constant, this is a very big challenge for Antenna Design.It is easy that antenna produces resonance at designed Frequency point place, but still keep enough wide bandwidth (GSM900 (80M bandwidth) when its size being reduced to meet the requirement of built-in mobile phone antenna size, DCS1800 (160MHz bandwidth), WCDMA (250MHz bandwidth)) be not the part nothing the matter, especially in low-frequency range.
Present GSM mobile handset operates mainly in 900MHz and two frequency ranges of 1800MHz, and next generation mobile communication system WCDMA use is that 1920MHz is to the 2170MHz frequency range.The antenna for mobile phone that can work in GSM and WCDMA system simultaneously is to guarantee that existing GSM net smooth transition is to one of indispensable mobile phone component of WCDMA net.
The utility model content
The purpose of this utility model is to overcome the shortcoming of prior art, and a kind of GSM900 that works in simultaneously is provided, DCS1800 and WCDMA three frequency ranges, and volume is little, and simple in structure, in light weight, processing easily, the built-in antenna of cell phone that cost is low.
The purpose of this utility model is achieved through the following technical solutions:
Built-in three-frequency mobile phone antenna based on the racemosus spread spectrum, comprise radiating element 1, elongated 50 ohm microstrip 2, circuit board of mobile phone dielectric layer 3 and floor 4, radiating element 1 and elongated 50 ohm microstrip 2 are for being engraved on the sheet copper of circuit board of mobile phone dielectric layer 3 one sides, floor 4 is for being engraved on the sheet copper of circuit board of mobile phone dielectric layer 3 another sides, radiating element 1 links to each other with signal feed-in point 7 through 50 elongated ohm microstrip 2, has two in the described radiating element 1
Shape is removed the slit 5 and slit 6 of copper sheet, slit 5 is positioned at slit 6 openings, slit 6 outer rim microstrip lines constitute microstrip line a, microstrip line between slit 5 and the slit 6 constitutes microstrip line b, microstrip line in the slit 5 constitutes microstrip line c, microstrip line a, b, c are communicated with, and microstrip line a is connected with elongated microstrip line 2.
Microstrip line c is used to produce the high band resonances frequency, and microstrip line a and microstrip line b are used to produce the low band resonance frequency, also produces resonance at high band simultaneously.Though the radiating element 1 same meeting resonance that removes microstrip line a is in 900MHz and two frequency ranges of 1800MHz, the 900MHz bandwidth is unsatisfactory.In order to expand the bandwidth of 900MHz, in radiating element 1, added a branch.Because the wavelength of 1800MHz frequency correspondence just in time be 900MHz frequency correspondence wavelength 1/2, the utility model has made full use of the multiple relation between 900MHz and two frequency ranges of 1800MHz just, the microstrip line a energy resonance that makes increase is in 900MHz and two frequency ranges of 1800MHz, so can also strengthen the bandwidth of high band in expansion low-frequency section bandwidth.Adjust the length of microstrip line a and microstrip line b, can make the bandwidth of high band extend to the WCDMA frequency range, make antenna work in GSM900 simultaneously, three frequency ranges of DCS1800 and WCDMA.
It is little, simple in structure, in light weight that built-in three frequency range antenna for mobile phone of the present utility model have a volume, processing easily, the characteristics that cost is low.
Description of drawings
Fig. 1 is antenna and circuit board general structure stereogram.
Fig. 2 be among Fig. 1 in the circuit board of mobile phone A-A to cutaway view.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Fig. 1 is the built-in three-frequency mobile phone antenna overall structure figure of the utility model based on the racemosus spread spectrum.Fig. 2 be among Fig. 1 circuit board along A-A to cutaway view.As depicted in figs. 1 and 2, this three-frequency mobile phone antenna comprises radiating element 1, elongated 50 ohm microstrip 2, circuit board of mobile phone dielectric layer 3 and floor 4, radiating element 1 and elongated 50 ohm microstrip 2 are for being engraved on the sheet copper of circuit board of mobile phone dielectric layer 3 one sides, floor 4 is for being engraved on the sheet copper of circuit board of mobile phone dielectric layer 3 another sides, radiating element 1 links to each other with signal feed-in point 7 through 50 elongated ohm microstrip 2, has two in the described radiating element 1
Shape is removed the slit 5 and slit 6 of copper sheet, slit 5 is positioned at slit 6 openings, slit 6 outer rim microstrip lines constitute microstrip line a, microstrip line between slit 5 and the slit 6 constitutes microstrip line b, microstrip line in the slit 5 constitutes microstrip line c, microstrip line a, b, c are communicated with, and microstrip line a is connected with elongated microstrip line 2.Microstrip line c is used to produce the high band resonances frequency, and microstrip line a and microstrip line b are used to produce the low band resonance frequency, also produces resonance at high band simultaneously.
When transmitting, current signal is 50 ohm elongated microstrip line 2 feed-in radiating elements 1 through characteristic impedance, thereby causes resonance from signal feed-in point 7 feed-ins, changes current signal into electromagnetic wave signal.During received signal, radiating element 1 changes electromagnetic wave signal into current signal, and signal propagation direction is opposite when transmitting.
According to the resonance principle of micro-strip paster antenna, when antenna length equal the resonant frequency point wavelength 1/4 or 1/2 the time all can cause resonance.The length of microstrip line a and microstrip line b all equals 1/4 wavelength of 900MHz Frequency point, also equals 1/2 wavelength of 1800MHz Frequency point, so microstrip line a and microstrip line b energy while resonance are in 900MHz and two frequency ranges of 1800MHz.Microstrip line c branch length equals 1/4 wavelength of 1800MHz, so energy resonance is in the 1800MHz frequency range.
The utility model antenna for mobile phone simultaneously resonance makes the resonant bandwidth of antenna can satisfy the bandwidth requirement of GSM900, DCS1800 and WCDMA simultaneously in 900MHz and two frequency ranges of 1800MHz, and it is little to have a volume, simple in structure, in light weight, processing easily, the characteristics that cost is low.
Claims (1)
1, based on the built-in three-frequency mobile phone antenna of racemosus spread spectrum, comprise radiating element (1), elongated 50 ohm microstrip (2), circuit board of mobile phone dielectric layer (3) and floor (4), radiating element (1) and elongated 50 ohm microstrip (2) are for being engraved on the sheet copper of circuit board of mobile phone dielectric layer (3) one side, floor (4) is for being engraved on the sheet copper of circuit board of mobile phone dielectric layer (3) another side, radiating element (1) links to each other with signal feed-in point (7) through elongated 50 ohm microstrip (2), it is characterized in that, have two in the described radiating element (1)
Shape is removed the slit (5) and slit (6) of copper sheet, slit (5) is positioned at slit (6) opening, slit (6) outer rim microstrip line constitutes microstrip line (a), microstrip line between slit (5) and slit (6) constitutes microstrip line (b), microstrip line in the slit (5) constitutes microstrip line (c), [p microstrip line (a, b, c) is communicated with, and microstrip line (a) is connected with elongated microstrip line (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200554696U CN2919565Y (en) | 2006-02-28 | 2006-02-28 | Built-in triple-frequency mobile phone antenna based on multi-branched band spread technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200554696U CN2919565Y (en) | 2006-02-28 | 2006-02-28 | Built-in triple-frequency mobile phone antenna based on multi-branched band spread technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2919565Y true CN2919565Y (en) | 2007-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200554696U Expired - Fee Related CN2919565Y (en) | 2006-02-28 | 2006-02-28 | Built-in triple-frequency mobile phone antenna based on multi-branched band spread technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN2919565Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505000A (en) * | 2008-02-05 | 2009-08-12 | 三星电子株式会社 | Multi-frequency band antenna and wireless communication terminal using the same |
| CN101308951B (en) * | 2008-07-01 | 2012-06-20 | 华南理工大学 | Wide-band electronic label antenna under multi-application environment |
| CN103606728A (en) * | 2013-10-30 | 2014-02-26 | 优能通信科技（杭州）有限公司 | Multi-antenna wireless terminal in narrow space |
| CN103682609A (en) * | 2013-11-29 | 2014-03-26 | 北京邮电大学 | Broadband monopole cellphone antenna |
| US11088445B2 (en) | 2018-04-20 | 2021-08-10 | Alpha Networks Inc. | Antenna assembly with compact layout traces |
-
2006
- 2006-02-28 CN CNU2006200554696U patent/CN2919565Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505000A (en) * | 2008-02-05 | 2009-08-12 | 三星电子株式会社 | Multi-frequency band antenna and wireless communication terminal using the same |
| CN101308951B (en) * | 2008-07-01 | 2012-06-20 | 华南理工大学 | Wide-band electronic label antenna under multi-application environment |
| CN103606728A (en) * | 2013-10-30 | 2014-02-26 | 优能通信科技（杭州）有限公司 | Multi-antenna wireless terminal in narrow space |
| CN103682609A (en) * | 2013-11-29 | 2014-03-26 | 北京邮电大学 | Broadband monopole cellphone antenna |
| CN103682609B (en) * | 2013-11-29 | 2016-04-20 | 北京邮电大学 | A kind of broadband monopole cellphone antenna |
| US11088445B2 (en) | 2018-04-20 | 2021-08-10 | Alpha Networks Inc. | Antenna assembly with compact layout traces |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Huizhou Jia Guan Tong Electronic Technology Co., Ltd. Assignor: South China University of Technology Contract record no.: 2010440000597 Denomination of utility model: Built-in triple-frequency mobile phone antenna based on multi-branched band spread technology Granted publication date: 20070704 License type: Exclusive License Record date: 20100602 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070704 Termination date: 20110228 |