CN200986965Y - Built-in multi-frequency antenna of mobile communication device and mobile communication device - Google Patents
Built-in multi-frequency antenna of mobile communication device and mobile communication device Download PDFInfo
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- CN200986965Y CN200986965Y CNU2006201355219U CN200620135521U CN200986965Y CN 200986965 Y CN200986965 Y CN 200986965Y CN U2006201355219 U CNU2006201355219 U CN U2006201355219U CN 200620135521 U CN200620135521 U CN 200620135521U CN 200986965 Y CN200986965 Y CN 200986965Y
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Abstract
An embedded-type multi-frequency antenna of mobile communication equipment contains a casing that defines an accommodation space; a circuit board which is inside the casing. The embedded-type multi-frequency antenna is separated from the circuit board, while part of the embedded-type multi-frequency antenna are overlapped with part of the circuit board, which overlapped part is equipped in the casing. The utility model contains a first antenna part which is used to receive and transmit the electromagnetic wave signal of the first working frequency, a second antenna part which is used to receive and transmit the electromagnetic wave signal of the second working frequency, the first feed-in point, the second feed-in point and a ground point. All the first feed-in point, the second feed-in point and the ground point are equipped at the overlapped part between the antenna and the circuit board, which is convenient for the electricity power connecting the circuit board. The partly overlapped design between the antenna and the circuit board can reduce the capacitance effect when the antenna is overlapped with the circuit board.
Description
Technical field
The utility model is about a kind of antenna, is meant a kind of built-in multiband antenna of mobile communications device especially.
Background technology
Mobile communications device now (as mobile phone, PDA etc.) is for easy to carry, all attach most importance in the design with compact, so use built-in antenna to come receiving and transmitting signal mostly, the volume of built-in antenna is little, be suitable for being located in the housing of communicator, and more be not subject to external force damage and influence communication quality.General a kind of planar inverted F-antenna (planar inverted-F antenna that places in the mobile device housing that uses more; PIFA), receive and dispatch 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 a casing 11 and that defines an accommodation space 10 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 one and is positioned at plate central authorities and grows the first parallel groove 131 of limit with it, one extends to second groove 132 on another long limit 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, first groove 131 and load point 133 are distinguished into second bigger antenna part 136 of an area and the first less antenna part 135 of an area with this planar inverted F-antenna 13, and produce two and be flow through the respectively current path of second antenna part 136 and first antenna part 135 of starting point by this load point 133, making this second antenna part 136 excite a frequency is the electromagnetic wave signal of 900MHz (GSM), and it is the electromagnetic wave signal of 1800MHz (DCS) that this first antenna part 135 then is used to excite a frequency.
But 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, increase the noise contribution of receiving and transmitting signal, and influence communication quality therefore easily because of the mutual interference of capacity effect phase.
The utility model content
Therefore, the purpose of this utility model is to provide a kind of built-in multiband antenna that reduces the mobile communications device of capacity effect.
Another purpose of the present utility model is to provide a kind of mobile communications device that can reduce the built-in multiband antenna of capacity effect that has.
The purpose of this utility model is to realize like this, a kind of built-in multiband antenna of mobile communications device promptly is provided, be located in the mobile communications device, this mobile communications device includes the circuit board that a casing and places casing, this built-in multiband antenna is the metal lamellar body of a bending, be located in this casing separately and partly with this circuit board with overlapping, and comprise one first antenna part, one second antenna part, one first load point, one second load point, and an earth point.This first antenna part is the electromagnetic wave signal that a planar inverted F-antenna is applicable to the 900MHz of transmitting-receiving one GSM specification, and at the quarter-wave resonance of this operating frequency, this second antenna part can be a planar inverted F-antenna or a loop type antenna (Loop Antenna), be applicable to the electromagnetic wave signal of the 1800MHz of transmitting-receiving one DCS specification, this earth point, second load point and first load point are located at the part of this antenna and the overlapping of this circuit board, so that be electrically connected this circuit board.
Advantage of the present utility model is, borrows stagger antenna and this circuit board, reduces the area that antenna overlaps with circuit board, reducing the capacity effect of this antenna, and the noise contribution of minimizing receiving and transmitting signal, the raising communication quality.
Description of drawings
Fig. 1 is a stereogram, and the traditional shape of falling F flat plane antenna is described;
Fig. 2 is a stereogram, illustrates that first preferred embodiment of the utility model built-in multiband antenna is located in the mobile communications device;
Fig. 3 is an end view, and the position relation of a circuit board of the built-in multiband antenna of this first preferred embodiment and this mobile communications device is described;
Fig. 4 is a stereogram, and one second preferred embodiment of the present utility model is described;
Fig. 5 is a stereogram, and one the 3rd preferred embodiment of the present utility model is described; And
Fig. 6 is a stereogram, and one the 4th preferred embodiment of the present utility model is described.
The primary clustering symbol description
2 mobile communications devices
21 housings
22 circuit boards
23 gaps
3,3 ', 6,6 ' first antenna part
4,5,7,8 second antenna parts
31,31 ', 61,61 ' first radiant section
32,32 ', 62,62 ' the first feed-in section
33,63,63 ' first load point
34,34 ', 64,64 ' earth point
311,611,611 ' first segmentation
312,612 second segmentations
313,313 ', 613,613 ' the 3rd segmentation
35 linkage sections
41,51,72,81 second radiant sections
42,52,71,82 second feed-in sections
43,53,73,83 second load points
411 first support arms
412 second support arms
821 first ends
822 the second ends
Embodiment
About aforementioned and other technology contents, characteristics and effect of the present utility model, in following cooperation four 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 and Fig. 3, first preferred embodiment of the built-in multiband antenna of the utility model mobile communications device is to be located at a mobile communications device 2, this mobile communications device 2 is a mobile phone in the present embodiment, but also can be a PDA(Personal Digital Assistant) or a notebook.This mobile communications device 2 comprises that a housing 21 and is placed in the circuit board 22 in this housing 21, and the size of this circuit board 22 is less than the size of this housing 21, form a gap 23 between a side (at present embodiment being example) that makes this circuit board 22 and a corresponding sidewall of this housing 21, and this circuit board 22 has a ground plane (scheming not show) near circuit board 22 minor faces of housing 21 upper ends; This built-in multiband antenna is to be arranged in this housing 21, and has one first antenna part 3 and one second antenna part 4.
This first antenna part 3 can be divided into one first radiant section 31, a linkage section 35 and one first feed-in section 32, and is provided with one first load point 33 and an earth point 34.This first radiant section 31 has one first segmentation 311, and respectively by one second segmentation 312 and one three segmentation 313 of these first segmentation, 311 two ends to equidirectional extension.This linkage section 35 is extended toward the direction away from this second segmentation 312 by the end of the 3rd segmentation 313 away from this first segmentation 311, and connects the first feed-in section 32 that this extends toward the 3rd segmentation direction 313 at the other end.This first feed-in section 32 all is positioned at the same side of this linkage section 35 with the 3rd segmentation 313, and connects this second antenna part 4 with an end of these first feed-in section, 32 close the 3rd segmentations 313.This first load point 33 is located at the end that this first feed-in section 32 is connected with this linkage section 35, and this earth point 34 is located at the end that this first feed-in section 32 is connected with this second antenna part 4.At this, the first feed-in section 32 of this first antenna part 3 is to be arranged at intervals directly over the circuit board 22, so that this first load point 33 and this earth point 34 are electrically connected on the ground plane of this circuit board 22 and this circuit board 22 respectively, remainder then is positioned at 23 in the gap of this circuit board 22 and this casing 21.
This second antenna part 4 comprises one second radiant section 41 and one second feed-in section 42, and is provided with one second load point 43, and this second radiant section 41 has parallel one first support arm 411 and one second support arm 412 that places these first feed-in section, 32 sides.This first support arm 411 is positioned at 32 of this second support arm 412 and this first feed-in sections, and connects this first feed-in section 32 with its end near first radiant section 31, and connects this second support arm 412 with the other end.This second feed-in section 42 is extended toward the direction of this circuit board 22 by the side of this first support arm 411 near the first feed-in section 32, make an end of this second feed-in section 42 be positioned at this circuit board 22 tops, and this second load point 43 is located at the end that this second feed-in section 42 is positioned at these circuit board 22 tops, so that be connected to this circuit board 22.It is other that this second feed-in section 42 is positioned at this first feed-in section 32, makes second load point 43 provided thereon be arranged in a straight line with this first load point 33 and this earth point 34, and this first goes into a little 33 between this second load point 43 and this earth point 34.
This first antenna part 3 forms a planar inverted F-antenna, and can excite and/or respond one first operating frequency, with the transmitting-receiving electromagnetic wave signal.The signal that has first operating frequency by these first load point, 33 feed-ins one, first antenna part, 3 formed equivalent aerial length equal the quarter-wave of this signal, but make these first antenna part, 3 resonance in this first operating frequency, and excite an electromagnetic wave signal with first operating frequency, and this signal sent, otherwise, can respond to an electromagnetic wave signal with first operating frequency, and produce an induced current, through this first load point 33 this signal is received and is sent to this circuit board 22.In the present embodiment, this first operating frequency is 900MHz (GSM).
This second antenna part 4 forms another planar inverted F-antenna, and can excite and/or respond one second operating frequency, with the transmitting-receiving electromagnetic wave signal.This second antenna part 4 and first antenna part 3 are shared an earth point 34, by this second load point 43 with this second antenna part 4 of signal feed-in with second operating frequency, the equivalent aerial length of this second antenna part 4 equals the quarter-wave of this signal, but make these second antenna part, 4 resonance in this second operating frequency, and excite an electromagnetic wave signal with second operating frequency, and this signal sent, otherwise, this second antenna part 4 can be responded to the electromagnetic wave signal with this second operating frequency and produce induced current, through this second load point 43 this signal is received and be sent to this circuit board 22.In the present embodiment, this second operating frequency is 1800MHz (DCS).This second antenna part 4 can make its frequency range contain 1900MHz (PCS) through suitable design, so this second antenna part 4 also can receive and dispatch the electromagnetic wave signal of 1900MHz, makes this multifrequency antenna can satisfy three frequently demands.
By tradition as can be known, the capacity effect that produced of traditional planar inverted F-antenna 13 mainly be by the flat planar inverted F-antenna 13 of this circuit board 12 and this overlap mutually be arranged in the casing 10 formed.Because of capacity effect and this antenna are directly proportional with the area that circuit board overlaps,, reduce the influence of capacity effect with this so the utility model reduces the area of the two overlapping by stagger antenna and circuit board.In the present embodiment, this built-in multiband antenna only have the part be positioned at this circuit board directly over, make this first, second load point 33,43 and earth point 34 be convenient to be electrically connected this circuit board 22, remainder is 21 gap 23 between between this circuit board 22 and this casing then, so can reduce the influence of capacity effect, and improve communication quality.
As shown in Figure 4, be second preferred embodiment of the present utility model, comprise one first antenna part 3 ' and one second antenna part 5, the design of present embodiment is roughly identical with first preferred embodiment, and its difference is the structure of this second antenna part 5.This second antenna part 5 has one second radiant section 51, one second feed-in section 52 and one second load point 53, the gap 23 of this second radiant section 51 between this circuit board 22 and this housing 21, and be connected in this first feed-in section 32 ' near first radiant section 31 ' an end, and parallel these first feed-in section, 32 ' back and forth turnovers are extended, this second feed-in section 52 be connected in this second radiant section 51 do not connect this first feed-in section 32 ' an end, and parallel this first antenna part 3 ' the 3rd segmentation 313 ', and make this first feed-in section 32 ' be positioned at the 3rd segmentation 313 ' and 52 of this second feed-in sections.The end that this second feed-in section 52 does not connect this second radiant section 51 is positioned at this circuit board 22 tops, and is provided with this second load point 53, so that connect with this circuit board 22.
This second antenna part 5 forms a loop type antenna, and can excite and/or respond one second operating frequency, with the transmitting-receiving electromagnetic wave signal.This second antenna part 5 and first antenna part 3 ' shared same earth point 34 ', by this second load point 53 with this second antenna part 5 of signal feed-in with second operating frequency, this signal is circulated on the current path that second antenna part 5 forms, and this earth point 34 ' and second load point 53 lay respectively at the two ends of this current path.And the length of this current path equals to have 1/2nd wavelength of the signal of this second operating frequency, but make these second antenna part, 5 resonance in this second operating frequency, and send an electromagnetic wave signal with second operating frequency, otherwise, this second antenna part 5 can be responded to the electromagnetic wave signal with this second operating frequency and produce induced current, by these second load point, 53 received signals and be sent to this circuit board 22.In the present embodiment, this second operating frequency is 1800MHz.Identical with first preferred embodiment, this second antenna part 5 can make its frequency range contain 1900MHz (PCS) through suitable design, so this second antenna part 5 also can receive and dispatch the electromagnetic wave signal of 1900MHz, makes this multifrequency antenna can satisfy three frequently demands.
As shown in Figure 5, be the 3rd preferred embodiment of the present utility model, the built-in multiband antenna of present embodiment is to be arranged in the housing 21 equally, and has one first antenna part 6 and one second antenna part 7.
This first antenna part 6 has one first radiant section 61 and one first feed-in section 62, and is provided with one first load point 63 and an earth point 64.This first radiant section 61 have one with circuit board 22 minor faces away from but the first parallel segmentation 611, and one second segmentation 612 and one the 3rd segmentation 613 of extending towards circuit board 22 directions respectively by these first segmentation, 611 two ends respectively.This first feed-in section 62 is connected in the end of the 3rd segmentation 613 of this first radiant section 61 away from this first segmentation 611, and is parallel to this first segmentation 611, and connects this second antenna part 7 with the end away from the 3rd segmentation 613.This first load point 63 is located at the end that this first feed-in section 62 connects the 3rd segmentation 613, and this earth point 64 is located at the end that this first feed-in section 62 connects this second antenna part 7.The first feed-in section 62 of this first antenna part 6 is to be positioned at directly over this circuit board 22, so that this first load point 63 and this earth point 64 connect the ground plane of this circuit board 22 and this circuit board 22 respectively, first antenna part, 6 remainders then are positioned at the gap 23 of 21 of this circuit board 22 and this housings.
This second antenna part 7 has one second feed-in section 71, one second radiant section 72 and one second load point 73, this second feed-in section 71 is parallel to this first segmentation 611 and is positioned at directly over this circuit board 22, and makes this first feed-in section 62 be positioned at 613 of this second feed-in section 71 and the 3rd segmentations.These second feed-in section, 71 1 ends connect the end that this first feed-in section 62 does not connect this first radiant section 61, and the other end then connects this second radiant section 72.This second radiant section 72 is extended toward the direction turnover away from this first segmentation 611 toward extending to first segmentation, 611 places of flushing away from circuit board 22 and with the 3rd segmentation 613 parallel directions by the end that this second feed-in section 71 is not connected with the first feed-in section 62 again, and then towards the turnover of the direction of this second feed-in section 71, and toward direction extension near this first segmentation 611, this second load point 73 is positioned at the end that this second radiant section 72 and this second feed-in section 71 are joined, and also is positioned at these circuit board 22 tops to connect this circuit board 22 simultaneously.
The principle of this 3rd embodiment receiving and transmitting signal is identical with first embodiment, the electromagnetic wave signal that also has this second operating frequency (DCS 1800MHz) with 7 transmitting-receivings of second antenna part, receive and dispatch the electromagnetic wave signal with this first operating frequency (GSM 900MHz) with first antenna part 6, this second antenna part 7 and first antenna part 6 are a planar inverted F-antenna.This 3rd embodiment reduces the area that the two overlaps by the antenna that staggers with circuit board 22 equally, reduces the influence of capacity effect with this, and promotes communication quality.Identical with first preferred embodiment, this second antenna part 7 can make its frequency range contain 1900MHz (PCS) through suitable design, so this second antenna part 7 also can receive and dispatch the electromagnetic wave signal of 1900MHz, makes this multifrequency antenna can satisfy three frequently demands.
Consult Fig. 6, be the 4th preferred embodiment of the present utility model, comprise one first antenna part 6 ' and one second antenna part 8, the design of present embodiment is roughly identical with the 3rd preferred embodiment, and its difference is the structure of this second antenna part 8.This second antenna part 8 has one second load point 83, one second radiant section 81 and one second feed-in section 82, these second radiant section, 81 parts be positioned at directly over the circuit board 22 and be parallel to this first segmentation 611 ', and make this second radiant section 81 of this first feed-in section 62 ' be positioned at and the 3rd segmentation 613 '.These second radiant section, 81 1 ends connect this first radiant section 61 of this first feed-in section 62 ' do not connect ' an end, the other end then connects this second feed-in section 82.This second feed-in section, 82 tools, one first end 821 and a second end 822, and be connected in this second radiant section 81 with this first end 821, and it is one L shaped that this second feed-in section 82 bends and extends into, and make this second end 822 be parallel to the 3rd segmentation 613 ' and be positioned at this first end 821 and the 3rd segmentation 613 '.This second load point 83 is located at this second end 822, and is positioned at these circuit board 22 tops so that be connected to this circuit board 22, and with this first load point 63 ' and earth point 64 ' be arranged in straight line.
This second antenna part 8 forms a loop type antenna, and can excite and/or respond one second operating frequency, with the transmitting-receiving electromagnetic wave signal.This second antenna part 8 and first antenna part 6 ' shared same earth point 64 ', by this second load point 83 with this second antenna part 8 of signal feed-in with second operating frequency, this signal circulates on the current path that second antenna part 8 forms, the length of this current path equals to have 1/2nd wavelength of the signal of this second operating frequency, but make these second antenna part, 8 resonance in this second operating frequency, and send an electromagnetic wave signal with second operating frequency, otherwise, this second antenna part 8 can be responded to the electromagnetic wave signal with this second operating frequency and produce induced current, by these second load point, 83 received signals and be sent to circuit board 22.In the present embodiment, this second operating frequency is 1800MHz (DCS).
Thus, this the 4th preferred embodiment can first antenna part 6 ' transmitting-receiving one frequency be the electromagnetic wave signal of 900MHz (GSM), and with this second antenna part, 8 transmitting-receivings, one frequency is the signal of 1800MHz (DCS), the also same the above embodiments of present embodiment, antenna reduces the area that the two overlaps with circuit board 22 by staggering, reduce the influence of capacity effect with this, and promote communication quality.Identical with first preferred embodiment, this second antenna part 8 can make its frequency range contain 1900MHz (PCS) through suitable design, so this second antenna part 8 also can receive and dispatch the electromagnetic wave signal of 1900MHz, makes this multifrequency antenna can satisfy three frequently demands.
The above person, it only is preferred embodiment of the present utility model, 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 application content generally changes and modifies, and all still belongs in the scope that the utility model patent contains.
Claims (34)
1. the built-in multiband antenna of a mobile communications device, it is characterized in that, this mobile communications device has a housing and and is placed in the interior circuit board of this housing, and the size of this circuit board is less than the size of this housing, form a gap between a side that makes this circuit board and a corresponding sidewall of this housing, and this circuit board has a ground plane; This built-in multiband antenna comprises:
One first antenna part, in order to excite and/or to respond one first operating frequency, it comprises that a compartment of terrain is located at the first feed-in section of this circuit board top, and one extend first radiant section be located at this gap by this first feed-in Duan Yiduan, and this first feed-in section is provided with first load point that connects with this circuit board and one and the earth point that connects of this ground plane; And
One second antenna part, be connected with the earth point of this first antenna part, in order to excite and/or to respond one second operating frequency, this second antenna part comprises that a compartment of terrain is located at the second feed-in section of this circuit board top, and one extend second radiant section be located at this gap by this second feed-in Duan Yiduan, and this second feed-in section is provided with second load point that connects with this circuit board.
2. the built-in multiband antenna of mobile communications device according to claim 1 is characterized in that, this first load point is between this second load point and this earth point.
3. the built-in multiband antenna of mobile communications device according to claim 1 is characterized in that, an end of this second radiant section is connected with this earth point.
4. the built-in multiband antenna of mobile communications device according to claim 1 is characterized in that, an end of this second radiant section connects this second feed-in Duan Yiduan, and its other end connects this earth point.
5. the built-in multiband antenna of mobile communications device according to claim 1 is characterized in that, an end of this second feed-in section connects this earth point, and its other end connects this second radiant section.
6. the built-in multiband antenna of mobile communications device according to claim 1 is characterized in that, this second load point, first load point and this earth point are positioned at same straight line.
7. the built-in multiband antenna of mobile communications device according to claim 1, it is characterized in that, this first radiant section has one first segmentation, and one second segmentation and one the 3rd segmentation of extending to the circuit board top by these first segmentation two ends respectively, this first antenna part comprises that also one is connected in the linkage section of the 3rd segmentation away from an end of this first segmentation, this linkage section is extended away from this second segmentation direction away from an end of this first segmentation is past by the 3rd segmentation, this first feed-in section connects this linkage section other end and extends toward this first radiant section, this first radiant section and the 3rd segmentation are positioned at the same side of this linkage section, and connect this second antenna part with a end near this first radiant section, this first load point is located at the end that this first feed-in section is connected with this linkage section, and this earth point is located at the end that this first feed-in section is connected with this second antenna part.
8. the built-in multiband antenna of mobile communications device according to claim 7, it is characterized in that, this second radiant section has parallel this first feed-in section other one first support arm and one second support arm of placing, this first support arm be positioned at this second support arm and first feed-in intersegmental, and connect this first feed-in section with its end near first radiant section, and connect this second support arm with the other end, this second feed-in section is extended toward the direction of this circuit board top by the side of this first support arm near the first feed-in section, and this second load point is located at this second feed-in section.
9. the built-in multiband antenna of mobile communications device according to claim 7, it is characterized in that, this second radiant section is connected in the end of this first feed-in section near first radiant section, and parallel this first feed-in section extension of transferring back and forth, this second feed-in section is connected in the end that this second radiant section does not connect this first feed-in section, and the 3rd segmentation of parallel this first radiant section, and make this first feed-in section be positioned at the 3rd segmentation and this second feed-in intersegmental, this second load point is located on this second feed-in section.
10. the built-in multiband antenna of mobile communications device according to claim 1, it is characterized in that, this first radiant section has one first segmentation, and one second segmentation and one the 3rd segmentation of extending to the circuit board top by these first segmentation two ends respectively, this first feed-in section connects the end of the 3rd segmentation of this first radiant section away from this first segmentation, this first feed-in section is parallel to this first segmentation, and connect this second antenna part with its end away from the 3rd segmentation, this first load point is located at the end that this first feed-in section connects the 3rd segmentation, and this earth point is located at the end that this first feed-in section connects this second antenna part.
11. the built-in multiband antenna of mobile communications device according to claim 10, it is characterized in that, this second feed-in section is parallel to this first segmentation, and it is intersegmental that this first feed-in section is positioned at this second feed-in section and the 3rd minute, this second feed-in Duan Yiduan connects the end that this first feed-in section does not connect this first radiant section, the other end then connects this second radiant section, this second radiant section is extended along the 3rd segmentation by the end that this second feed-in Duan Weiyu the 3rd segmentation connects, and extending toward direction away from this first segmentation with the turnover of the first segmentation place of flushing, and then turnover is toward extending near the direction of this first segmentation, and this second load point is positioned at the end that this second feed-in section and this second radiant section join.
12. the built-in multiband antenna of mobile communications device according to claim 10, it is characterized in that, this second radiant section is parallel to this first segmentation, and it is intersegmental that this first feed-in section is positioned at this second radiant section and the 3rd minute, this second radiant section, one end connects the end that this first feed-in section does not connect this first radiant section, the other end then connects this second feed-in section, this second feed-in section tool one first end and a second end, and be connected in this second radiant section with this first end, and bend and extend into a circulation, and make this second end be parallel to the 3rd segmentation and be positioned at this first end and the 3rd minute intersegmental, this second load point is positioned at this second end.
13. the built-in multiband antenna of mobile communications device according to claim 1 is characterized in that, this first operating frequency is 900MHz.
14. the built-in multiband antenna of mobile communications device according to claim 1 is characterized in that, this second operating frequency is 1800MHz/1900MHz.
15. the built-in multiband antenna of mobile communications device according to claim 1 is characterized in that, this first antenna part is a planar inverted F-antenna.
16. the built-in multiband antenna of mobile communications device according to claim 1 is characterized in that, this second antenna part is a planar inverted F-antenna.
17. the built-in multiband antenna of mobile communications device according to claim 1 is characterized in that, this second antenna part is a loop type antenna.
18. a mobile communications device is characterized in that, comprising:
One housing;
One is placed in the circuit board in this housing, and the size of this circuit board is less than the size of this housing, formation one gap between a side that makes this circuit board and a corresponding sidewall of this housing, and this circuit board has a ground plane;
One is arranged at the built-in multiband antenna in this housing, has:
One first antenna part, in order to excite and/or to respond one first operating frequency, it comprises that a compartment of terrain is located at the first feed-in section of this circuit board top, and one extend first radiant section be located at this gap by this first feed-in Duan Yiduan, and this first feed-in section is provided with first load point that connects with this circuit board and one and the earth point that connects of this ground plane; And
One second antenna part, be connected with the earth point of this first antenna part, in order to excite and/or to respond one second operating frequency, this second antenna part comprises that a compartment of terrain is located at the second feed-in section of this circuit board top, and one extend second radiant section be located at this gap by this second feed-in Duan Yiduan, and this second feed-in section is provided with second load point that connects with this circuit board.
19. mobile communications device according to claim 18 is characterized in that, this first load point is between this second load point and this earth point.
20. mobile communications device according to claim 18 is characterized in that, this first load point, second load point and this earth point are positioned at same straight line.
21. mobile communications device according to claim 18 is characterized in that, an end of this second radiant section is connected with this earth point.
22. mobile communications device according to claim 18 is characterized in that, an end of this second radiant section connects this second feed-in Duan Yiduan, and its other end connects this earth point.
23. mobile communications device according to claim 18 is characterized in that, an end of this second feed-in section connects this earth point, and its other end connects this second radiant section.
24. mobile communications device according to claim 18, it is characterized in that, this first radiant section has one first segmentation, and one second segmentation and one the 3rd segmentation of extending to the circuit board top by these first segmentation two ends respectively, this first antenna part comprises that also one is connected in the linkage section of the 3rd segmentation away from an end of this first segmentation, this linkage section is extended away from this second segmentation direction away from an end of this first segmentation is past by the 3rd segmentation, this first feed-in section connects this linkage section other end and extends toward this first radiant section, this first radiant section and the 3rd segmentation are positioned at the same side of this linkage section, and connect this second antenna part with a end near this first radiant section, this first load point is located at the end that this first feed-in section is connected with this linkage section, and this earth point is located at the end that this first feed-in section is connected with this second antenna part.
25. mobile communications device according to claim 24, it is characterized in that, this second radiant section has parallel this first feed-in section other one first support arm and one second support arm of placing, this first support arm be positioned at this second support arm and first feed-in intersegmental, and connect this first feed-in section with its end near first radiant section, and connect this second support arm with the other end, this second feed-in section is extended toward the direction of this circuit board top by the side of this first support arm near the first feed-in section, and this second load point is located at this second feed-in section.
26. mobile communications device according to claim 24, it is characterized in that, this second radiant section is connected in the end of this first feed-in section near first radiant section, and parallel this first feed-in section extension of transferring back and forth, this second feed-in section is connected in the end that this second radiant section does not connect this first feed-in section, and the 3rd segmentation of parallel this first radiant section, and make this first feed-in section be positioned at the 3rd segmentation and this second feed-in intersegmental, this second load point is located on this second feed-in section.
27. mobile communications device according to claim 18, it is characterized in that, this first radiant section has one first segmentation, and respectively by of one second segmentation and one three segmentation of these first segmentation two ends to equidirectional extension, this first feed-in section connects the end of the 3rd segmentation of this first radiant section away from this first segmentation, this first feed-in section is parallel to this first segmentation, and connect this second antenna part with its end away from the 3rd segmentation, this first load point is located at the end that this first feed-in section connects the 3rd segmentation, and this earth point is located at the end that this first feed-in section connects this second antenna part.
28. mobile communications device according to claim 27, it is characterized in that, this second feed-in section is parallel to this first segmentation, and it is intersegmental that this first feed-in section is positioned at this second feed-in section and the 3rd minute, this second feed-in Duan Yiduan connects the end that this first feed-in section does not connect this first radiant section, the other end then connects this second radiant section, this second radiant section is extended along the 3rd segmentation by the end that this second feed-in Duan Weiyu the 3rd segmentation connects, and extending toward direction away from this first segmentation with the turnover of the first segmentation place of flushing, and then turnover is toward extending near the direction of this first segmentation, and this second load point is positioned at the end that this second feed-in section and this second radiant section join.
29. mobile communications device according to claim 27, it is characterized in that, this second radiant section is parallel to this first segmentation, and it is intersegmental that this first feed-in section is positioned at this second radiant section and the 3rd minute, this second radiant section, one end connects the end that this first feed-in section does not connect this first radiant section, the other end then connects this second feed-in section, this second feed-in section tool one first end and a second end, and be connected in this second radiant section with this first end, and bend and extend into a circulation, and make this second end be parallel to the 3rd segmentation and be positioned at this first end and the 3rd minute intersegmental, this second load point is positioned at this second end.
30. the built-in multiband antenna of mobile communications device according to claim 18 is characterized in that, this first antenna part is a planar inverted F-antenna.
31. the built-in multiband antenna of mobile communications device according to claim 18 is characterized in that, this second antenna part is a planar inverted F-antenna.
32. the built-in multiband antenna of mobile communications device according to claim 18 is characterized in that, this second antenna part is a loop type antenna.
33. the built-in multiband antenna of mobile communications device according to claim 18 is characterized in that, this first operating frequency is 900MHz.
34. the built-in multiband antenna of mobile communications device according to claim 18 is characterized in that, this second operating frequency is 1800MHz/1900MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201355219U CN200986965Y (en) | 2006-09-15 | 2006-09-15 | Built-in multi-frequency antenna of mobile communication device and mobile communication device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201355219U CN200986965Y (en) | 2006-09-15 | 2006-09-15 | Built-in multi-frequency antenna of mobile communication device and mobile communication device |
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| Publication Number | Publication Date |
|---|---|
| CN200986965Y true CN200986965Y (en) | 2007-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201355219U Expired - Lifetime CN200986965Y (en) | 2006-09-15 | 2006-09-15 | Built-in multi-frequency antenna of mobile communication device and mobile communication device |
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| CN (1) | CN200986965Y (en) |
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