CN2919559Y - Multifrequency antenna of portable communication device - Google Patents
Multifrequency antenna of portable communication device Download PDFInfo
- Publication number
- CN2919559Y CN2919559Y CNU2006200032802U CN200620003280U CN2919559Y CN 2919559 Y CN2919559 Y CN 2919559Y CN U2006200032802 U CNU2006200032802 U CN U2006200032802U CN 200620003280 U CN200620003280 U CN 200620003280U CN 2919559 Y CN2919559 Y CN 2919559Y
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- China
- Prior art keywords
- antenna
- radiant section
- portable communication
- communication device
- circuit board
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- Expired - Lifetime
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Abstract
A portable multi-frequency antenna communication equipment is positioned inside a portable communication equipment, which is an invested U-shaped sheet metal body comprising one a first antenna part, one a second antenna part, one a first point, one a second point and an earthing contact, wherein the first antenna part is applicable for inducing the first frequency electromagnetic signal, and the second antenna part is applicable for the second frequency electromagnetic signal, the antenna is small is size with the inverted U-shaped, and is suitable to be arranged in portable communication equipment with limited cubage, with tri-band (900 MHz, 1800MHz and 1900MHz)electromagnetic signal.
Description
Technical field
The utility model is about a kind of antenna, particularly a kind of multifrequency antenna that is arranged on portable communications equipment.
Background technology
Modern mobile phone is except the function of general communication, many additional functions have also been increased, as photography, playing back music etc., and general mobile phone is for ease of carrying, therefore volume is less mostly, in the limited space of mobile phone housing, often will dispose many different electronic building bricks to deal with the difference in functionality demand, and, often use a kind of planar inverted F-antenna (planar inverted-F antenna that places in the mobile phone housing for dwindling the mobile phone volume; PIFA), be used for receiving and dispatching GSM specification (900MHz) and DCS specification (1800MHz) signal.
Consult Fig. 1, be a traditional planar inverted F-antenna 13 that is arranged in the mobile phone 1, this mobile phone 1 comprises that one defines the casing 11 of an accommodation space 10, one is arranged at the circuit board 12 in this casing 11, this planar inverted F-antenna 13 is arranged at circuit board 12 tops in the casing 11, this planar inverted F-antenna 13 is a rectangular flat metal plate, it has first groove 131 that is positioned at central authorities and parallel its long limit, one extends to second groove 132 on a long limit of planar inverted F-antenna 13 by these first groove, 131 central vertical, one load point 133, and the earth point 134 of a contiguous load point 133 in order to link this circuit board 12.
This second groove 132 is distinguished into first slot part 1311 and second slot part 1312 with first groove 131, this planar inverted F-antenna 13 also can form two current paths, walk around first slot part 1311 and second slot part 1312 respectively, and but resonance is in two operating frequencies, and determine this two operating frequency by the length of adjusting first slot part 1311 and second slot part 1312, make this two operating frequency lay respectively at 900MHz (GSM) and 1800MHz (DCS).
Because this planar inverted F-antenna 13 is a metal plate, and be arranged at the intensive circuit board of circuit layout 12 tops at intervals with this circuit board 12, therefore easily because of capacity effect interferes with each other the noise contribution that increases institute's receiving and transmitting signal, and the shape of these planar inverted F-antenna 13 rectangular flats has limited planar inverted F-antenna 13 and has been arranged on position in the mobile phone casing 11; Again,, not only take the confined space in the casing 11, also limited other electronic building brick such as camera, the electromagnetic shaker etc. of mobile phone 1, be arranged on the position in the casing 11 because of planar inverted F-antenna 13 areas are big.
The utility model content
Therefore, the purpose of this utility model is promptly providing a kind of volume less, is used for a portable communication device and can receives and dispatches the multifrequency antenna of multiple-frequency signal.
In order to realize the purpose of this utility model, a kind of multifrequency antenna of portable communication device is provided, this portable communication device comprises that a casing and places the circuit board of this casing, wherein, this circuit board has one first side and two and joins respectively with first side and the second relative side, this multifrequency antenna comprises: one first antenna part, be operated in one first frequency range, it has second radiant section that first radiant section that extends along first side of this circuit board with this circuit board compartment of terrain and is extended along one second side of this circuit board with the compartment of terrain by the end turnover of this first radiant section; And one second antenna part, being operated in one second frequency range, its and this circuit board compartment of terrain is by another the second side extension along this circuit board of the other end of this first radiant section.The utility model provides a kind of multifrequency antenna of portable communication device, it is for be inverted U-shaped metal lamellar body without exception, and be provided with one first load point, one second load point at appropriate location, reach an earth point, the shape of this antenna and size are to be applicable to induction one high frequency electromagnetic wave signal (DCS 1800MHz/PCS1900MHz) and a low-frequency electromagnetic wave (GSM 900MHz) signal.
With respect to prior art, the more traditional rectangle plane inverted-F antenna of the required surface area of multifrequency antenna of the present utility model is little, and that its effect is the planar inverted F-antenna institute of traditional same homalographic is inaccessiable.Because the area of multifrequency antenna is less, and the unconventional rectangular flat of profile, thus can improve traditional planar inverted F-antenna easily with the shortcoming of circuit board generation capacity effect.
Description of drawings
Fig. 1 is a perspective view, and the traditional planar inverted F-antenna that is installed in the mobile phone is described;
Fig. 2 is a stereogram, and the structure of multifrequency antenna of the portable communication device of one first preferred embodiment of the present utility model is described;
Fig. 3 is a schematic diagram, and the voltage standing wave ratio measurement result of the preferred embodiment is described;
Fig. 4 is a schematic diagram, and the radiation pattern measurement result of the preferred embodiment in 900MHz is described;
Fig. 5 is a schematic diagram, and the radiation pattern measurement result of the preferred embodiment in 1800MHz is described;
Fig. 6 is a plane graph, and the structure of one second preferred embodiment of the present utility model is described; And
Fig. 7 is a plane graph, and the structure of one the 3rd preferred embodiment of the present utility model is described.
The primary clustering symbol description
2 casings, 3 circuit boards
31 first sides, 32 second sides
4 multifrequency antennas 41,41 ' first antenna part
42,42 ', 42 " first antenna part 412,412 ' second radiant section
411,411 ', 411 " first radiant section, 4,111 first load points
4112 earth points, 421 second load points
422,422 ' the 3rd radiant section 423,423 ' the 4th radiant section
Embodiment
About aforementioned and other technology contents, characteristics and effect of the present utility model, in following cooperation three DETAILED DESCRIPTION OF THE PREFERRED with reference to the accompanying drawings, can clearly present.
Before the utility model is described in detail, be noted that in the following description content similarly assembly is to represent with identical numbering.
Consult Fig. 2, first preferred embodiment of the multifrequency antenna of the utility model portable communication device is to be arranged at a portable communication device, in this preferred embodiment, this portable communication device is a mobile phone, but also can be a notebook or a PDA(Personal Digital Assistant).This portable communication device comprises that a casing 2 and that defines an accommodation space 21 places the circuit board 3 of this casing 2, this circuit board 3 has one first side 31 and two and joins respectively with first side 31 and the second relative side 32, this multifrequency antenna 4 comprises one first antenna part 41 and one second antenna part 42, and the overall structure summary of this multifrequency antenna 4 is one inverted U-shaped.
This first antenna part 41 is in order to receiving and dispatching an electromagnetic wave signal in 900MHz (GSM) frequency range, and it has second radiant section 412 that first radiant section 411 that a compartment of terrain extends in parallel along first side 31 of this circuit board 3 and is extended in parallel along one second side 32 of this circuit board 3 with the compartment of terrain by the end turnover of this first radiant section 411.This second radiant section 412 is perpendicular to this first radiant section 411.First radiant section 411 has one first load point 4111 and an earth point 4112 that is electrically connected to this circuit board 3.The equivalent length of first antenna part 41 is equivalent to the quarter-wave that frequency is the signal of 900MHz, so it can respond to and receive the low-frequency electromagnetic wave signal that a frequency is 900MHz, and produce an induced current by first load point 4111 through this circuit board 3 of a lead feed-in, otherwise, can be signal feed-in first load point 4111 of 900MHz through a lead with a frequency also, send by first antenna part 41 by this circuit board 3.
This second antenna part 42 is used for receiving and dispatching an electromagnetic wave signal in the 1800MHz frequency range, its antiparallel again metal lamellar body that is a U-shaped that extends near first radiant section 411 after to be a compartment of terrain along another second side 32 of this circuit board 3 extend in parallel, this second antenna part 42 have one by first load point 4111 along this another second side 32 and towards the 3rd radiant section 422 that extends in parallel away from these first side, 31 directions, one is continued along the 3rd radiant section 422 inboardly but run parallel to the 4th radiant section 423 near first radiant section 411 towards these first side, 31 directions by the turnover of the end of the 3rd radiant section 422, and one is located at the 4th radiant section 423 ends in order to be electrically connected to second load point 421 of this circuit board 3.The 3rd radiant section 422 in this second antenna part 42 is positioned at same plane with the 4th radiant section 423, and the distance between the 3rd radiant section 422 and this second radiant section 412 is greater than the distance of 412 of the 4th radiant section 423 and this second radiant sections.
The 3rd radiant section 422 of this second antenna part 42 and the 4th radiant section 423 form a loop type antenna (loop antenna), its equivalent length is equivalent to 1/2nd wavelength that frequency is the signal of 1800MHz, so it can be used for responding to the electromagnetic wave signal that a frequency range drops on 1800MHz, and produce an induced current by this circuit board 3 of second load point, 421 feed-ins, otherwise, can be this second load point 421 of signal feed-in of 1800MHz through a lead with an operating frequency also, send by second antenna part 42 by this circuit board 3.This second antenna part 42 can make its frequency range contain 1900MHz (PCS) through suitable design, so this second antenna part 42 also can receive and dispatch the electromagnetic wave signal of 1900MHz, reaches this multifrequency antenna 4 three requirement frequently.
Thus, the frequency range that the multifrequency antenna 4 of present embodiment can be contained is 900MHz (GSM), 1800MHz (DCS) and 1900MHz (PCS), and the more traditional rectangle plane inverted-F antenna of the required surface area of present embodiment is little, and that its effect is the planar inverted F-antenna institute of traditional same homalographic is inaccessiable.Because the area of multifrequency antenna 4 is less, and the unconventional rectangular flat of profile, thus can improve traditional planar inverted F-antenna easily with the shortcoming of circuit board generation capacity effect.The inverted U-shaped shape of this multifrequency antenna 4 more can cooperate the shape of mobile phone casing, is provided with on every side in casing 2, and the accommodation space 21 of casing 2 is abdicated to other electronic building brick, as electromagnetic shaker, camera lens, loud speaker etc.
As shown in Figure 3, be voltage standing wave ratio (the voltage standing waveratio of first preferred embodiment, VSWR) measurement result, its standing-wave ratio when 880MHz is 2.0513, standing-wave ratio when 960MHz is 1.8577, standing-wave ratio when 1710MHz is 2.1444, and the standing-wave ratio when 1880MHz is 1.9012, and the standing-wave ratio when 1990MHz then is 2.0499.
And being the multifrequency antenna of first preferred embodiment, Fig. 4,5 operates in the radiation pattern of 900MHz and 1800MHz respectively, by measurement result as can be known, multifrequency antenna of the present utility model is when these frequency band operations, and its horizontal section has an omni-directional, and all has good gain performance on each angle.
As shown in Figure 6, be second preferred embodiment of the present utility model, its design principle is same as first preferred embodiment, so do not repeat them here, difference is, the 4th radiant section 423 ' of this second antenna part 42 ' is the opposite side (outside) that is positioned at this first support arm 422 ', and the distance that makes the 3rd radiant section 422 ' and this second radiant section 412 ' is less than the distance between the 4th radiant section 423 ' and this second radiant section 412 '.Present embodiment is is equally also received and dispatched the electromagnetic wave signal of 900MHz with first antenna part 41 ', and receives and dispatches the electromagnetic wave signal of 1800MHz/1900MHz with second antenna part 42 '.
As shown in Figure 7, be the 3rd preferred embodiment of the present utility model, its design principle is same as first preferred embodiment, so do not repeat them here, its difference is, this second antenna part 42 " be that a neighbour is located at first radiant section 411 " an end and not with this first radiant section 411 " join directly to the straight metal lamellar body of length that extends.And second antenna part 42 " equally in order to receive and dispatch the electromagnetic wave signal of 1800MHz/1900MHz.
The above person only is a preferred embodiment of the present utility model, and when not limiting the scope that the utility model is implemented with this, promptly the simple equivalent of being done according to the utility model description generally changes and modifies, and all still belongs in the utility model scope.
Claims (13)
1. the multifrequency antenna of a portable communication device, this portable communication device comprises that a casing and places the circuit board of this casing, it is characterized in that this circuit board has one first side and two and joins respectively with first side and the second relative side, this multifrequency antenna comprises:
One first antenna part, be operated in one first frequency range, it has second radiant section that first radiant section that extends along first side of this circuit board with this circuit board compartment of terrain and is extended along one second side of this circuit board with the compartment of terrain by the end turnover of this first radiant section; And
One second antenna part is operated in one second frequency range, and itself and this circuit board compartment of terrain is extended along another second side of this circuit board by the other end of this first radiant section.
2. the multifrequency antenna of portable communication device according to claim 1 is characterized in that, this second radiant section in this first antenna part is perpendicular to this first radiant section.
3. the multifrequency antenna of portable communication device according to claim 1 is characterized in that, this second antenna part is perpendicular to this first radiant section, makes this multifrequency antenna be one inverted U-shaped.
4. the multifrequency antenna of portable communication device according to claim 1 is characterized in that, the end near this second antenna part of first radiant section of this first antenna part is provided with one first load point and an earth point that is electrically connected to this circuit board.
5. the multifrequency antenna of portable communication device according to claim 1 is characterized in that, this second antenna part be provided with second load point that is electrically connected to this circuit board near an end of this first radiant section.
6. the multifrequency antenna of portable communication device according to claim 1, it is characterized in that this second antenna part comprises that also one is continued along this another second side but towards the 4th radiant section that extends near this first side direction along this another second side and towards the 3rd radiant section that extends away from this first side direction and an end turnover by the 3rd radiant section by this first load point.
7. the multifrequency antenna of portable communication device according to claim 6 is characterized in that, the 3rd radiant section and the 4th radiant section in this second antenna part are positioned at same plane.
8. the multifrequency antenna of portable communication device according to claim 7 is characterized in that, the distance of the 3rd radiant section in this second antenna part and this second radiant section of this first antenna part is greater than the distance between the 4th radiant section and this second radiant section.
9. the multifrequency antenna of portable communication device according to claim 7 is characterized in that, the distance of the 3rd radiant section in this second antenna part and this second radiant section of this first antenna part is less than the distance between the 4th radiant section and this second radiant section.
10. the multifrequency antenna of portable communication device according to claim 1 is characterized in that, this second antenna part is that an end of first radiant section of a metal lamellar body and its contiguous this first antenna part does not join with this first radiant section.
11. the multifrequency antenna of portable communication device according to claim 1 is characterized in that, this first frequency range is 900MHz.
12. the multifrequency antenna of portable communication device according to claim 1 is characterized in that, this second frequency range is 1800MHz/1900MHz.
13. the multifrequency antenna of portable communication device according to claim 1 is characterized in that, this antenna is made by a copper sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200032802U CN2919559Y (en) | 2006-03-23 | 2006-03-23 | Multifrequency antenna of portable communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200032802U CN2919559Y (en) | 2006-03-23 | 2006-03-23 | Multifrequency antenna of portable communication device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2919559Y true CN2919559Y (en) | 2007-07-04 |
Family
ID=38217378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200032802U Expired - Lifetime CN2919559Y (en) | 2006-03-23 | 2006-03-23 | Multifrequency antenna of portable communication device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2919559Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103972649A (en) * | 2013-02-04 | 2014-08-06 | 深圳富泰宏精密工业有限公司 | Antenna assembly and wireless communication device with same |
| CN111697317A (en) * | 2019-03-15 | 2020-09-22 | 广达电脑股份有限公司 | Mobile device |
-
2006
- 2006-03-23 CN CNU2006200032802U patent/CN2919559Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103972649A (en) * | 2013-02-04 | 2014-08-06 | 深圳富泰宏精密工业有限公司 | Antenna assembly and wireless communication device with same |
| CN111697317A (en) * | 2019-03-15 | 2020-09-22 | 广达电脑股份有限公司 | Mobile device |
| CN111697317B (en) * | 2019-03-15 | 2021-10-26 | 广达电脑股份有限公司 | Mobile device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070704 |
|
| EXPY | Termination of patent right or utility model |