CN102117956A - Dual-frequency antenna - Google Patents
Dual-frequency antenna Download PDFInfo
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- CN102117956A CN102117956A CN 200910260733 CN200910260733A CN102117956A CN 102117956 A CN102117956 A CN 102117956A CN 200910260733 CN200910260733 CN 200910260733 CN 200910260733 A CN200910260733 A CN 200910260733A CN 102117956 A CN102117956 A CN 102117956A
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- dual
- linking part
- band antenna
- radius
- grounding parts
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Abstract
The invention discloses a dual-frequency antenna which comprises a grounding part, a connecting part, a radiating part, a radiating tank and a feed part, wherein the connecting part is provided with a top edge and a bottom edge oppositely, and a first side edge and a second side edge connected with two ends of the top edge and the bottom edge, wherein the bottom edge of the connecting part is connected with the grounding part; the radiating part is convexly arranged on the first side edge of the connecting part and the top edge adjacent to the connecting part; the radiating tank is arranged inside the connecting part and adjacent to the second side edge and the bottom edge of the connecting part, and is provided with an opening at a position on the first side edge of the connecting part; the feed part is formed at a position of the connecting part adjacent to the radiating tank; and the radiating part is operated at a first frequency band, and the radiating tank is operated at a second frequency band. The dual-frequency antenna can work at two different frequency bands.
Description
Technical field
The present invention system is about a kind of antenna, especially in regard to a kind of dual-band antenna.
Background technology
Antenna is the significant components that is used for launching and receiving electromagnetic wave energy in wireless telecommunication system, if lacked antenna, then wireless telecommunication system can't effectively operate.Standard for wave band at present commonly used has IEEE 802.11, DECT and at present the most popular 802.15.1 (bluetooth communication) or the like, and wherein 802.11 are divided into 802.11a and 802.11b defines at 5GHz and 2.4GHz in addition.
Please refer to shown in Figure 1, known antenna 1 schematic diagram.Antenna 1 comprises a Department of Radiation 11, a short circuit portion 12, a feeding portion 13 and a grounding parts 14.Short circuit portion 12 is arranged on a side of Department of Radiation 11, and with grounding parts 14 electrically connects, and the load point on the Department of Radiation 11 is connected with feeding portion 13, forms an antenna 1 with feed-in grounding parts 14.
Therefore, see through feeding portion 13 and make it produce resonance at Department of Radiation 11 by an electric current, the wave band that utilizes resonance to produce makes its reception or launches the signal of special frequency channel.In addition, also can set up a radiation sheet metal (not shown) again, after design, can make antenna 1 be applied in dual-band antenna at Department of Radiation 11.
Yet, the frequency range of antenna 1 can only contain certain a part of scope, therefore restriction to some extent under the demand of different frequency range, but if set up a radiation sheet metal again with as dual-band antenna, then can make the size of antenna 1 to dwindle effectively, be applied in the electronic product of the more and more littler change of present volume.
Therefore, how to provide a kind of energy minification also can increase the antenna of operation frequency range, become one of important topic gradually.
Summary of the invention
The purpose of this invention is to provide a kind of energy minification also can increase the dual-band antenna of operation frequency range.
The present invention can realize by the following technical solutions.
A kind of dual-band antenna of the present invention comprises a grounding parts, a linking part, a Department of Radiation, a radius and a current feed department.Linking part has a top margin and a base that is oppositely arranged, and a first side and a second side be connected with the two ends on described top margin and described base, and the described base of described linking part is connected with described grounding parts, and the base of linking part is connected with grounding parts.Department of Radiation is darted at the first side of linking part and the top margin of contiguous linking part.Radius is arranged on the second side and the base of the inner and contiguous linking part of linking part, and it is in the first side of linking part and have an opening.Current feed department is formed on the position of the opening of the contiguous radius of linking part.Wherein Department of Radiation operates in one first frequency range, and radius operates in one second frequency range, makes dual-band antenna of the present invention can be operated in two kinds of different frequency ranges.
In an embodiment of the present invention, above-mentioned current feed department is connected with a signal source.
In an embodiment of the present invention, above-mentioned linking part also has a location notch, and the neighbour is located at the first side of radius and linking part, makes the position of current feed department be limited at the zone of location notch both sides.
Preferably of the present invention, the direction of the contiguous radius of above-mentioned location notch also has an opening.
In an embodiment of the present invention, also has an angle between above-mentioned grounding parts and the linking part.
In an embodiment of the present invention, above-mentioned linking part also has a fixed part, fixed part is prominent to be established self feeding portion and passes radius and extend to the grounding parts direction, grounding parts then has a recess correspondence at fixed part, makes dual-band antenna be connected with a signal source by fixed part and is fixed in its applied wireless telecommunications.
In an embodiment of the present invention, above-mentioned grounding parts and another larger area ground plane electrically connect.
Preferably of the present invention, the top margin of above-mentioned linking part and base are approximate to be arranged in parallel.
Preferably of the present invention, the base of above-mentioned linking part and first side near normal are provided with.
Preferably of the present invention, the base of above-mentioned linking part and second side near normal are provided with.
Preferably of the present invention, above-mentioned Department of Radiation and grounding parts are approximate to be arranged in parallel.
Preferably of the present invention, the base of the contiguous linking part of the opening of above-mentioned radius.
In an embodiment of the present invention, above-mentioned radius has at least one turnover, but and essence be the L type.
Preferably of the present invention, above-mentioned radius is the L type and is made of one first slotted eye, one second slotted eye and turnover, one end of first slotted eye is connected with turnover, the other end of first slotted eye is an enclosed construction, one end of second slotted eye is connected with turnover, the other end of second slotted eye has opening, and wherein the second side of first slotted eye and linking part is approximate be arranged in parallel, and the base of second slotted eye and linking part is approximate to be arranged in parallel.
In an embodiment of the present invention, above-mentioned dual-band antenna comprises that also an impedance matching portion is connected grounding parts, and impedance matching portion also and between the grounding parts has an angle.Adjust the impedance matching of dual-band antenna by impedance matching portion.
Preferably of the present invention, the first side of above-mentioned contiguous Department of Radiation of impedance matching portion and linking part.
In an embodiment of the present invention, the frequency of operation of above-mentioned second frequency range is higher than the frequency of operation of first frequency range.
In an embodiment of the present invention, above-mentioned dual-band antenna is one-body molded.
In an embodiment of the present invention, above-mentioned dual-band antenna also can comprise a plurality of fixtures, prominent establishing from grounding parts.Can make dual-band antenna be fixed in its applied wireless telecommunications by fixture.
By technique scheme, dual-band antenna of the present invention has following advantage at least.
From the above, have a Department of Radiation and a radius according to dual-band antenna of the present invention, therefore utilize Department of Radiation exportable and receive a certain frequency range (signal of 2.4GHz～2.5GHz) for example, radius then can and receive another frequency range (signal of 5.15GHz～5.85GHz) for example in order to output.Whereby, dual-band antenna of the present invention not only can have two different operation frequency ranges simultaneously, and one of them operation frequency range reaches by radius, and the setting of radius can reduce the volume of dual-band antenna effectively, dwindles the size of dual-band antenna further.
Description of drawings
Fig. 1 is known antenna schematic diagram;
Fig. 2 A is the schematic diagram of the dual-band antenna of the preferred embodiment of the present invention, and Fig. 2 B is the vertical view of formation as the sheet material of the dual-band antenna of Fig. 2 A;
Fig. 3 be the frequency of dual-band antenna of the preferred embodiment of the present invention and voltage standing wave ratio concern measurement figure;
Fig. 4 A to Fig. 4 E is the radiation pattern measurement figure of the dual-band antenna of preferred embodiment of the present invention XY-Plane when operating in different frequency range; And
Fig. 5 A is the schematic diagram of another aspect of dual-band antenna of the preferred embodiment of the present invention, and Fig. 5 B is the vertical view of formation as the sheet material of the dual-band antenna of Fig. 5 A.
The main element symbol description:
1: antenna
11,23: Department of Radiation
12: short circuit portion
13: feeding portion
14,21,21a: grounding parts
2,2a: dual-band antenna
211: recess
22,22a: linking part
221: top margin
222: the base
223: the first side
224: the second side
225: location notch
226: fixed part
24: radius
241: opening
242: turnover
243: the first slotted eyes
244: the second slotted eyes
25: current feed department
26: impedance matching portion
27: fixture
θ: angle
P1, P2: sheet material
P1～P15: curve
Embodiment
Hereinafter with reference to correlative type, a kind of dual-band antenna according to the preferred embodiment of the present invention is described, wherein identical assembly will be illustrated with identical symbol.
Please refer to shown in Fig. 2 A the schematic diagram of the dual-band antenna 2 of the preferred embodiment of the present invention.Dual-band antenna 2 comprises a grounding parts 21, a linking part 22, a Department of Radiation 23, a radius 24 and a current feed department 25.Wherein, dual-band antenna 2 for example can be a metal material, perhaps other conductivity material.
The shape of grounding parts 21 is non-limiting, is example with the rectangle at this, and certainly, according to different requirement or designs, grounding parts 21 also can be square or other polygon.Be noted that the area of grounding parts 21 is non-limiting, during practical application, the area of grounding parts 21 is preferable with 35mm * 22.6mm approximately, and it only is an illustrative, and is non-in order to restriction the present invention.
Linking part 22 has a top margin 221 and a base 222 that is oppositely arranged, and a first side 223 and a second side 224 be connected with the two ends on top margin 221 and base 222, and the base 222 of linking part 22 is connected with grounding parts 21.Wherein, can have an angle theta between grounding parts 21 and the linking part 22, and angle theta is big or small non-limiting.In the present embodiment, explain with linking part 22 upright sides that are located at grounding parts 21.In other words, linking part 22 vertically is provided with (being that angle theta is 90 degree) side at grounding parts 21.In addition, the height of linking part 22 is non-limiting, and during practical application, the height of linking part 22 is preferable with 12mm approximately, and it only is an illustrative, and is non-in order to restriction the present invention.
Department of Radiation 23 is darted at the first side 223 of linking part 22 and the top margin 221 of contiguous linking part 22.The length of Department of Radiation 23 is non-limiting, and (for example the signal of 2.4GHz～2.5GHz) is consideration can export and receive default frequency range really.
Certainly, radius 24 also can have a plurality of turnovers, and end is can make radius 24 output and receive default frequency range (for example the signal of 5.15GHz～5.85GHz) is consideration really.
What deserves to be mentioned is that dual-band antenna 2 can be one-body molded or be engaged by different plates and to form, in the present embodiment, with dual-band antenna 2 to be one-body molded explaining.Shown in Fig. 2 B, form the vertical view of the sheet material P1 of dual-band antenna 2.After sheet material P1 cut into shape as Fig. 2 B, can form dual-band antenna 2 along the bending of the dotted line among Fig. 2 B again.Shown in Fig. 2 A, therefore, dual-band antenna 2 can make it produce resonance at Department of Radiation 23 and radius 24 by an electric current by current feed department 25, and the wave band that utilizes resonance to produce, make Department of Radiation 23 and radius 24 exportable respectively and receive default frequency range (for example Department of Radiation 23 is 2.4GHz～2.5GHz, and radius 24 is signals of 5.15GHz～5.85GHz).Whereby, dual-band antenna 2 not only can have two different operation frequency ranges simultaneously, and one of them operation frequency range reaches by radius 24, and the setting of radius 24 can reduce the volume of dual-band antenna 2 effectively, dwindles the size of dual-band antenna 2 further.
Please refer to shown in Figure 3ly, the frequency of the dual-band antenna 2 of present embodiment and the relation of voltage standing wave ratio measure figure, and wherein, the longitudinal axis is represented the static standing-wave ratio (VSWR) of voltage, and transverse axis is represented frequency (Frequency).The static standing-wave ratio of the acceptable voltage of general industry is 2 approximately, and under less than 2 definition, in the present embodiment, dual-band antenna 2 is operable in 2.4GHz～2.5GHz and 515GHz～585GHz.
Please refer to shown in Fig. 4 A the radiation pattern measurement figure of XY-Plane when the dual-band antenna 2 of present embodiment operates in 2.45GHz.Wherein curve P1 is, when dual-band antenna 2 operates in 2.45GHz, is under 252 degree in angle, have peak gain to be approximately-0.34dBi, and be under 210 degree in angle, have average gain to be approximately-3.14dBi.Curve P2 is, when dual-band antenna 2 operates in 2.45GHz, is under 297 degree in angle, have peak gain to be approximately-2.35dBi, and be under 204 degree in angle, have average gain to be approximately-7.06dBi.Curve P3 is, when dual-band antenna 2 operates in 2.45GHz, is that having peak gain is 0.41dBi approximately under 261 degree in angle, is under 208 degree in angle, has average gain to be approximately-1.66dBi.
Please refer to shown in Fig. 4 B the radiation pattern measurement figure of XY-Plane when the dual-band antenna 2 of present embodiment operates in 5.15GHz.Wherein curve P3 is, when dual-band antenna 2 operates in 5.15GHz, is under 210 degree in angle, have peak gain to be approximately-0.74dBi, and be under 243 degree in angle, have average gain to be approximately-3.39dBi.Curve P4 is, when dual-band antenna 2 operates in 5.15GHz, is under 228 degree in angle, have peak gain to be approximately-0.76dBi, and be under 162 degree in angle, have average gain to be approximately-5.11dBi.Curve P6 is, when dual-band antenna 2 operates in 5.15GHz, is that having peak gain is 1.51dBi approximately under 219 degree in angle, is under 300 degree in angle, has average gain to be approximately-1.15dBi.
Please refer to shown in Fig. 4 C the radiation pattern measurement figure of XY-Plane when the dual-band antenna 2 of present embodiment operates in 5.35GHz.Wherein curve P7 is, when dual-band antenna 2 operates in 5.35GHz, is that having peak gain is 0.59dBi approximately under 15 degree in angle, is under 282 degree in angle, has average gain to be approximately-2.1dBi.Curve P8 is, when dual-band antenna 2 operates in 5.35GHz, is that having peak gain is 0.18dBi approximately under 222 degree in angle, is under 162 degree in angle, has average gain to be approximately-4.65dBi.Curve P9 is, when dual-band antenna 2 operates in 5.35GHz, is that having peak gain is 2.77dBi approximately under 216 degree in angle, is under 288 degree in angle, has average gain to be approximately-0.18dBi.
Please refer to shown in Fig. 4 D the radiation pattern measurement figure of XY-Plane when the dual-band antenna 2 of present embodiment operates in 5.47GHz.Wherein curve P10 is, when dual-band antenna 2 operates in 5.47GHz, is that having peak gain is 1.51dBi approximately under 207 degree in angle, is under 282 degree in angle, has average gain to be approximately-1.35dBi.Curve P11 is, when dual-band antenna 2 operates in 5.47GHz, is that having peak gain is 1.49dBi approximately under 219 degree in angle, is under 162 degree in angle, has average gain to be approximately-3.6dBi.Curve P12 is, when dual-band antenna 2 operates in 5.47GHz, is that having peak gain is 4.1dBi approximately under 213 degree in angle, is that having average gain is 0.68dBi approximately under 290 degree in angle.
Please refer to shown in Fig. 4 E the radiation pattern measurement figure of XY-Plane when the dual-band antenna 2 of present embodiment operates in 5.85GHz.Wherein curve P13 is, when dual-band antenna 2 operates in 5.85GHz, is that having peak gain is 3.27dBi approximately under 195 degree in angle, is that having average gain is 0.02dBi approximately under 93 degree in angle.Curve P14 is, when dual-band antenna 2 operates in 5.85GHz, is that having peak gain is 1.55dBi approximately under 213 degree in angle, is under 36 degree in angle, has average gain to be approximately-2.73dBi.Curve P15 is, when dual-band antenna 2 operates in 5.85GHz, is that having peak gain is 5.08dBi approximately under 207 degree in angle, is that having average gain is 1.87dBi approximately under 99 degree in angle.
Please refer to shown in Fig. 5 A and Fig. 5 B, wherein Fig. 5 A is the schematic diagram of another aspect of dual-band antenna 2a of the preferred embodiment of the present invention, and Fig. 5 B is the vertical view that forms the sheet material P2 of dual-band antenna 2a.Be noted that dual-band antenna 2a can be one-body molded equally or be engaged by different plates and to form, be one-body molded explaining at this with dual-band antenna 2a.Shown in Fig. 5 B, sheet material P2 cut into shape as Fig. 5 B after, can form dual-band antenna 2a along the bending of the dotted line among Fig. 5 B again.
Dual-band antenna 2a can comprise that also an impedance matching portion 26 is connected with grounding parts 21a, and and grounding parts 21a between have an angle.Wherein, impedance matching portion 26 is provided with the position vicinity in Department of Radiation 23 first side 223 with linking part 22a, and impedance matching portion 26 can be identical or inequality with angle theta with angle between the grounding parts 21a, and to be all example mutually, it is non-limiting at this.Can further adjust the impedance matching of dual-band antenna 2a by impedance matching portion 26.What deserves to be mentioned is that the shape of impedance matching portion 26 and area size are non-limiting, different designs can be arranged according to different requirements.
In addition, linking part 22a can have also that a fixed part 226 is prominent to be established self feeding portion 25 and pass radius 24 and extend to grounding parts 21 directions, grounding parts 21a then has a recess 211 correspondences at fixed part 226, radius 23 and impedance matching portion 26 can the position in recess 211 both sides.Moreover dual-band antenna 2a also can comprise a plurality of fixtures 27, prominent establishing from grounding parts 21a.Whereby, dual-band antenna 2a can be secured in its applied wireless telecommunications by fixed part 226 and fixture 27.
In sum, have a Department of Radiation and a radius according to dual-band antenna of the present invention, therefore utilize Department of Radiation exportable and receive a certain frequency range (signal of 2.4GHz～2.5GHz) for example, radius then can and receive another frequency range (signal of 5.15GHz～5.85GHz) for example in order to output.Whereby, dual-band antenna of the present invention not only can have two different operation frequency ranges simultaneously, and one of them operation frequency range reaches by radius, and the setting of radius can reduce the volume of dual-band antenna effectively, dwindles the size of dual-band antenna further.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be included in the claim institute restricted portion its equivalent modifications of carrying out or change.
Claims (12)
1. a dual-band antenna is characterized in that, comprising:
One grounding parts;
One linking part has the top margin and the base that are oppositely arranged, and the first side and the second side that are connected with the two ends on described top margin and described base, and the described base of described linking part is connected with described grounding parts;
One Department of Radiation is darted at the described first side of described linking part and the described top margin of contiguous described linking part;
One radius is formed on the described second side and the described base of the inner and contiguous described linking part of described linking part, and described radius has an opening in the described first side of described linking part; And
One current feed department is formed on the position that described linking part is close to the described opening of described radius;
Wherein, described Department of Radiation operates in one first frequency range, and described radius then operates in one second frequency range, and has an angle between described grounding parts and the described linking part.
2. dual-band antenna according to claim 1 is characterized in that described linking part also has a location notch, and this location notch neighbour is located at the described first side of described radius and described linking part.
3. dual-band antenna according to claim 1 is characterized in that described radius has at least one turnover.
4. dual-band antenna according to claim 1, it is characterized in that, described radius is the L type, constitute by one first slotted eye, one second slotted eye and a turnover, one end of described first slotted eye is connected with described turnover, the other end of described first slotted eye is an enclosed construction, and an end of described second slotted eye is connected with described turnover, and the other end of described second slotted eye is described opening.
5. dual-band antenna according to claim 4 is characterized in that, the described second side of described first slotted eye and described linking part is approximate to be arranged in parallel, and the described base of described second slotted eye and described linking part is approximate to be arranged in parallel.
6. dual-band antenna according to claim 1 is characterized in that, also comprises:
One impedance matching portion is connected with described grounding parts, and and described grounding parts between have an angle.
7. dual-band antenna according to claim 6 is characterized in that, described impedance matching portion is provided with the described first side that the position is adjacent to described Department of Radiation and described linking part.
8. dual-band antenna according to claim 1 is characterized in that described linking part also has a fixed part, is based in described current feed department and passes described radius and extend to described grounding parts direction.
9. dual-band antenna according to claim 8 is characterized in that described grounding parts has the recess corresponding to described fixed part.
10. dual-band antenna according to claim 1 is characterized in that, also comprises:
A plurality of fixtures are based in described grounding parts.
11. dual-band antenna according to claim 1 is characterized in that, is one-body molded.
12. a dual-band antenna is characterized in that, comprising:
One grounding parts;
One linking part has the top margin and the base that are oppositely arranged, and the first side and the second side that are connected with the two ends on described top margin and described base, and the described base of described linking part is connected with described grounding parts;
One Department of Radiation is based in the described first side of described linking part and the described top margin of contiguous described linking part;
One radius is formed on the described second side and the described base of the inner and contiguous described linking part of described linking part, and described radius has an opening in the described first side of described linking part; And
One current feed department is formed on the position that described linking part is close to the described opening of described radius;
Wherein, described Department of Radiation operates in one first frequency range, and radius then operates in one second frequency range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910260733 CN102117956A (en) | 2009-12-31 | 2009-12-31 | Dual-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910260733 CN102117956A (en) | 2009-12-31 | 2009-12-31 | Dual-frequency antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102117956A true CN102117956A (en) | 2011-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910260733 Pending CN102117956A (en) | 2009-12-31 | 2009-12-31 | Dual-frequency antenna |
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| CN (1) | CN102117956A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036583A (en) * | 2011-10-08 | 2013-04-10 | 宏碁股份有限公司 | Communication electronic device and antenna structure thereof |
| CN103915678A (en) * | 2013-01-07 | 2014-07-09 | 智易科技股份有限公司 | Omnidirectional antenna |
| WO2019076260A1 (en) * | 2017-10-17 | 2019-04-25 | 中兴通讯股份有限公司 | Multiple-input multiple-output antenna device for terminal and method for realizing transmission of antenna signal |
-
2009
- 2009-12-31 CN CN 200910260733 patent/CN102117956A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036583A (en) * | 2011-10-08 | 2013-04-10 | 宏碁股份有限公司 | Communication electronic device and antenna structure thereof |
| CN103915678A (en) * | 2013-01-07 | 2014-07-09 | 智易科技股份有限公司 | Omnidirectional antenna |
| US9190728B2 (en) | 2013-01-07 | 2015-11-17 | Arcadyan Technology Corporation | Omnidirectional antenna |
| CN103915678B (en) * | 2013-01-07 | 2016-07-06 | 智易科技股份有限公司 | Omni-directional |
| WO2019076260A1 (en) * | 2017-10-17 | 2019-04-25 | 中兴通讯股份有限公司 | Multiple-input multiple-output antenna device for terminal and method for realizing transmission of antenna signal |
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Application publication date: 20110706 |