CN101853982B - Multifrequency antenna and wireless communication device applying same - Google Patents
Multifrequency antenna and wireless communication device applying same Download PDFInfo
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- CN101853982B CN101853982B CN 200910301360 CN200910301360A CN101853982B CN 101853982 B CN101853982 B CN 101853982B CN 200910301360 CN200910301360 CN 200910301360 CN 200910301360 A CN200910301360 A CN 200910301360A CN 101853982 B CN101853982 B CN 101853982B
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Abstract
The invention provides a multifrequency antenna. The multifrequency antenna comprises a radiating unit, a first grounding part, a transmission part, a second grounding part and a circuit matching part, wherein the radiating unit is connected with the transmission part by the circuit matching part; the first grounding part and the second grounding part are arranged at both sides of the transmission part; and the multifrequency antenna generates a multifrequency working mode by the radiating unit as well as the first grounding part and the second grounding part which are distributed at both sides of the transmission part. The invention also provides a wireless communication device applying the multifrequency antenna.
Description
Technical field
The present invention relates to a kind of multifrequency antenna, relate in particular to a kind of plane formula multifrequency antenna and use the radio communication device of this multifrequency antenna.
Background technology
Along with developing rapidly and the raising day by day of people's living standard of wireless communication technology, the information processing technology, mobile phone, personal digital assistant (personal digital assistant, PDA) etc. portable radio communication device competitively emerges in large numbers, enter into huge numbers of families, make the consumer can enjoy all facilities that high-tech brings whenever and wherever possible, make these portable radio communication devices become the indispensable part of modern's daily life.
In these radio communication devices, be used for launching, receiving radio wave to transmit, to exchange the antenna assembly of radio data signal, beyond doubt one of most important assembly in radio communication device.The single-band antenna device generally is difficult for satisfying people to the demand of multiband radio communication device, existing multifrequency antenna generally has more complicated structure and larger volume, and need to be installed in the installation site that is suitable for launching and receives wireless signal to obtain better transmitting-receiving effect.But the general small volume of radio communication device, the installing space of its inside is very limited, also is difficult to provide well-to-do being suitable for to launch and receive the installation site of wireless signal.Therefore, existing most multifrequency antenna is difficult to be directly installed on transmitting/receiving wireless signal use in radio communication device.
Summary of the invention
For the problems referred to above, be necessary to provide a kind of multifrequency antenna little and that be convenient to install that takes up room.
A kind of multifrequency antenna, this multifrequency antenna comprises a radiating element, one first grounding parts, a transport part, one second grounding parts and a match circuit section, this radiating element is connected with the transport part by match circuit section, this first grounding parts and the second grounding parts are arranged at the both sides, transport part, and this multifrequency antenna produces the multiple-frequency operation pattern by radiating element and the first grounding parts, the second grounding parts that are distributed in the both sides, transport part.
a kind of radio communication device, it comprises a substrate and is arranged at multifrequency antenna on substrate, this substrate comprises that two mutual parallel first sides reach the two mutual parallel second sides that are connected with this two first side, this multifrequency antenna comprises a radiating element that is arranged at substrate surface, one first grounding parts, one transport part, one second grounding parts and a match circuit section, this radiating element is arranged on substrate along a first side, and section is connected with the transport part by match circuit, this first grounding parts and the second grounding parts are arranged at the both sides, transport part, this multifrequency antenna is by radiating element and be distributed in the first grounding parts of both sides, transport part, the second grounding parts produces the multiple-frequency operation pattern.
Compared with prior art, during multifrequency antenna of the present invention work, the transport part can be connected with feeder line in radio communication device, by radiating element and be arranged at the both sides, transport part and asymmetric the first grounding parts and the second grounding parts inspire a plurality of working frequency range.So, this multifrequency antenna adopts Flat Architecture can realize the multi-band communication function fully, thereby the space that takies is less, is suitable for being arranged in various radio communication devices using.
Description of drawings
Fig. 1 is that the multifrequency antenna of preferred embodiment of the present invention is installed in the schematic diagram on substrate.
Fig. 2 is the standing-wave ratio schematic diagram of the multifrequency antenna of preferred embodiment of the present invention.
Embodiment
See also Fig. 1, the multifrequency antenna 100 of preferred embodiment of the present invention is the planar antenna of an employing co-plane waveguide mode FD feed, this multifrequency antenna 100 is arranged at mobile phone, personal digital assistant (personal digital assistant, PDA) etc. on the substrate 300 in radio communication device, can launch, receive radio wave with the transmitting/receiving wireless signal of telecommunication in a plurality of frequency ranges.
This substrate 300 is a rectangle plate body, and it can be the part of a printed circuit board (PCB) or printed circuit board (PCB).This substrate 300 comprises two mutual parallel first side 301 and two mutual parallel second sides 302.This two first side 301 and two second sides 302 vertically are connected, and form four summits 303 in the intersection.
This multifrequency antenna 100 is arranged on this substrate 300, and it comprises a radiating element 10, one first grounding parts 20, a transport part 30, one second grounding parts 40 and a match circuit section 50.This radiating element 10, the first grounding parts 20, transport part 30, the second grounding parts 40 and match circuit section 50 are the slim conduction lamellar body that level is laid in substrate 300 same surfaces.This radiating element 10 comprises one first Department of Radiation 11 and second Department of Radiation 12 that is connected with this first Department of Radiation 11.This first Department of Radiation 11 is roughly a triangle lamellar body, and level is laid on this substrate 300 1 surfaces.This first Department of Radiation 11 has a drift angle 111 and a base 112.This base 112 overlaps with a first side 301 of substrate 300, and the one end overlaps with a summit 303; 111 of this drift angles are placed on substrate 300.This second Department of Radiation 12 is one to have the lamellar body of crippling shape, and its level is laid on this substrate 300.These the second Department of Radiation 12 integral body be located at 300 should the surface on the side at drift angle 111 places of this first Department of Radiation 11, the one end is connected with the drift angle 111 of this first Department of Radiation 11, and the other end is being connected with match circuit section 50 after extend several times away from the direction of drift angle 111 along square waveform path crippling.
The concrete mode that the complications of this second Department of Radiation 12 are extended is from this drift angle 111, at first, along perpendicular to the direction on base 112 after segment distances are extended in a first side 301, bending one right angle to the direction that is parallel to this base 112 extends one than short distance towards a second side 302; Then, again be bent to along the right angle perpendicular to the direction on base 112 and extend one than short distance towards first side 301 directions, turn back to the direction that is parallel to base 112 with rectangular shaped, and towards long described another second side 302 apart from rear arrival substrate 300 of another second side 302 extensions one, extend one than short distance along the direction that is parallel to second side 302 again, turn back along the direction that is parallel to base 112 again and extend and above-mentioned long equidistant distance, thereby consist of a square waveform zigzag section.Complications are repeatedly repeatedly according to aforesaid way for this second Department of Radiation 12, thereby form a plurality of (at least 2) square zigzag section, the length of every section direction institute extended distance that is parallel to base 112 is equal to each other, and be slightly less than the length on base 112, make these the second Department of Radiation 12 integral body present square wave-shaped configuration, consist of described crippling shape, to carry out the signal radiation.The quantity of these zigzag sections can be adjusted according to actual needs.This second Department of Radiation 12 extends to form an end 121 away from the end of drift angle 111 is final along the direction perpendicular to base 112, and 121 places are connected with match circuit section 50 in the end.
This first grounding parts 20 is arranged at the substrate 300 upper sides relative with radiating element 10 in surface, and the outer reaches wherein with two second sides 302 of substrate 300, and a first side 301 overlaps.This first grounding parts 20 is processed by a rectangle lamellar body, and its side near radiating element 10 is provided with one first breach 21.
This transport part 30 comprises a main body 31 and a kink 32 that is connected with this main body 31.The exterior contour of this transport part 30 is roughly suitable with the first breach 21, and its direction along the first breach 21 is arranged on substrate 300 above-mentioned surface, and and the first grounding parts 20 between form one first slit 22.The main body 31 of this transport part 30 is connected with the interior existing feeder line (not shown) of radio communication device, and kink 32 is connected with match circuit section 50, to carry out the signal transmission when this multifrequency antenna 100 work.
This second grounding parts 40 is similar to the first grounding parts 20 shapes, and size is less than the first grounding parts 20, and it has one second breach 41.This second grounding parts 40 is arranged at transport part 30 side relative with the first grounding parts 20, and the second breach 41 is towards the transport part 30, and forms one second slit 42 between transport part 30.When actual design is made, regulate the width of above-mentioned the first slit 22 and the second slit 42 and can adjust the working frequency range of multifrequency antenna 100.
This match circuit section 50 is plates, and the one end is connected with the second Department of Radiation 12 of radiating element 10, and the other end is connected with transport part 30, in order to the impedance matching of this multifrequency antenna 100 to be provided.
See also Fig. 2, be depicted as standing-wave ratio (the Voltage Standing Wave Ratio of multifrequency antenna 100 of the present invention, VSWR) schematic diagram, as can be seen from Figure, this multifrequency antenna all can satisfy antenna work designing requirement under the operating frequency of 824MHz, 960MHz, 1710MHz, 1880MHz, 1990MHz, 2170MHz.
See also table 1, be depicted as the radiation efficiency of multifrequency antenna 100 of the present invention.As shown in Table 1, this multifrequency antenna 100 all satisfies antenna work designing requirement in radiation efficiency.
The radiation efficiency of each frequency of table 1 multifrequency antenna
| Frequency (MHz) | 824 | 960 | 1710 | 1880 | 1990 | 2170 |
| Efficient (%) | 41.21 | 44.18 | 78.94 | 85.21 | 74.40 | 76.65 |
During multifrequency antenna of the present invention 100 work, transport part 30 can be connected with feeder line in radio communication device, by radiating element 10 and be arranged at 30 both sides, transport part and asymmetric the first grounding parts 20 and the second grounding parts 40 inspire a plurality of working frequency range.This multifrequency antenna 100 adopts completely that Flat Architecture can possess the multiple-frequency operation performance, thereby it is obviously less to take up room, easily with radio communication device in other plane component integration, be conducive to reduce the volume of radio communication device.
Claims (7)
1. multifrequency antenna, it is characterized in that: this multifrequency antenna comprises a radiating element, one first grounding parts, one transport part, one second grounding parts and a match circuit section, this radiating element is connected with the transport part by match circuit section, this first grounding parts and the second grounding parts are arranged at the both sides, transport part, this multifrequency antenna is by radiating element and be distributed in the first grounding parts of both sides, transport part, the second grounding parts produces the multiple-frequency operation pattern, this first grounding parts is processed by rectangle plates, it has one first breach, this transport part comprises a main body and a kink that is connected with this main body, the exterior contour of this transport part and the first breach are roughly suitable, this transport part and this first grounding parts form the first slit of a polyline shaped in the first indentation, there, regulating the width of this first slit can adjust the working frequency range of this multifrequency antenna.
2. multifrequency antenna as claimed in claim 1, it is characterized in that: this radiating element comprises one first Department of Radiation and the second Department of Radiation that is connected with this first Department of Radiation, this first Department of Radiation is a triangle lamellar body, and this second Department of Radiation is one to have the lamellar body of crippling shape.
3. multifrequency antenna as claimed in claim 1, it is characterized in that: this second grounding parts is processed by rectangle plates, and it has one second breach.
4. multifrequency antenna as claimed in claim 3 is characterized in that: this transport part and this second grounding parts form one second slit in the second indentation, there.
5. radio communication device, it comprises a substrate and is arranged at multifrequency antenna on substrate, this substrate comprises that two mutual parallel first sides reach the two mutual parallel second sides that are connected with this two first side, it is characterized in that: this multifrequency antenna comprises a radiating element that is arranged at substrate surface, one first grounding parts, one transport part, one second grounding parts and a match circuit section, this radiating element is arranged on substrate along a first side, and section is connected with the transport part by match circuit, this first grounding parts and the second grounding parts are arranged at the both sides, transport part, this multifrequency antenna is by radiating element and be distributed in the first grounding parts of both sides, transport part, the second grounding parts produces the multiple-frequency operation pattern, this first grounding parts is processed by rectangle plates, it has one first breach, this transport part comprises a main body and a kink that is connected with this main body, the exterior contour of this transport part and the first breach are roughly suitable, this transport part and this first grounding parts form the first slit of a polyline shaped in the first indentation, there, regulating the width of this first slit can adjust the working frequency range of this multifrequency antenna.
6. radio communication device as claimed in claim 5, it is characterized in that: this radiating element comprises one first Department of Radiation and the second Department of Radiation that is connected with this first Department of Radiation, this first Department of Radiation is a triangle lamellar body, this first Department of Radiation comprises a drift angle and a base, this base arranges along the first side, the one end overlaps with a summit, and this drift angle is placed on substrate; This second Department of Radiation is one to have the lamellar body of crippling shape, and it is arranged on substrate a side at the first Department of Radiation drift angle place.
7. radio communication device as claimed in claim 5, it is characterized in that: this second grounding parts is processed by rectangle plates, and it has one second breach, and this transport part and this second grounding parts form one second slit in the second indentation, there.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910301360 CN101853982B (en) | 2009-04-03 | 2009-04-03 | Multifrequency antenna and wireless communication device applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910301360 CN101853982B (en) | 2009-04-03 | 2009-04-03 | Multifrequency antenna and wireless communication device applying same |
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| Publication Number | Publication Date |
|---|---|
| CN101853982A CN101853982A (en) | 2010-10-06 |
| CN101853982B true CN101853982B (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910301360 Expired - Fee Related CN101853982B (en) | 2009-04-03 | 2009-04-03 | Multifrequency antenna and wireless communication device applying same |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104425895B (en) * | 2013-08-29 | 2019-05-14 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device with the antenna structure |
| CN106374199B (en) * | 2016-08-31 | 2019-04-05 | 常熟正昊电子科技有限公司 | A kind of uhf band communication antenna |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101222086A (en) * | 2007-01-12 | 2008-07-16 | 鸿富锦精密工业（深圳）有限公司 | Printing type antenna |
| CN100435412C (en) * | 2001-06-25 | 2008-11-19 | 古河电气工业株式会社 | Chip aerial and its manufacturing method |
| CN101399394A (en) * | 2007-09-29 | 2009-04-01 | 富士康(昆山)电脑接插件有限公司 | Multi-frequency antenna |
-
2009
- 2009-04-03 CN CN 200910301360 patent/CN101853982B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100435412C (en) * | 2001-06-25 | 2008-11-19 | 古河电气工业株式会社 | Chip aerial and its manufacturing method |
| CN101222086A (en) * | 2007-01-12 | 2008-07-16 | 鸿富锦精密工业（深圳）有限公司 | Printing type antenna |
| CN101399394A (en) * | 2007-09-29 | 2009-04-01 | 富士康(昆山)电脑接插件有限公司 | Multi-frequency antenna |
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| CN101853982A (en) | 2010-10-06 |
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