CN1200478C - Double frequency short-circuit plate antenna - Google Patents
Double frequency short-circuit plate antenna Download PDFInfo
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- CN1200478C CN1200478C CN 01144029 CN01144029A CN1200478C CN 1200478 C CN1200478 C CN 1200478C CN 01144029 CN01144029 CN 01144029 CN 01144029 A CN01144029 A CN 01144029A CN 1200478 C CN1200478 C CN 1200478C
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- sheet metal
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- metal
- primary radiation
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 118
- 239000002184 metal Substances 0.000 claims abstract description 117
- 230000005855 radiation Effects 0.000 claims abstract description 64
- 230000003071 parasitic effect Effects 0.000 claims abstract description 39
- 239000000758 substrate Substances 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The present invention provides a short-circuit plate antenna for double-frequency operation. A radiation metal sheet is mainly composed of a main radiation metal sheet and a parasitic metal sheet, wherein the main radiation metal sheet and the parasitic metal sheet are respectively grounded by two short-circuit metal elements which provide resonance modes having 1/4 wavelength resonance so as to obtain the double-frequency operation. The antenna of the present invention not only can satisfy the frequency bandwidth needed by a double frequency bands simultaneously, but also has the advantages of simple structure and low cost.
Description
Technical field
The present invention relates to a kind of short-circuit plate antenna of variable frequency, especially relate to a kind of short-circuit plate antenna that can carry out frequency conversion two frequency ranges.
Background technology
In recent years because the prosperity of communications industry, various Wireless electrical appliance products manufactured come out like the mushrooms after rain.These have between electric, the electronic product of wireless communication apparatus and carry out communication mutually in order to make computer, printer, digital camera etc., perhaps make wireless product can control other electronics of refrigerator, TV, air conditioner or the like, electric product, proposed planned bluetooth.Because the employed frequency range of planned bluetooth is the 2.4GHz frequency range of ISM frequency band, when each Wireless electrical appliance all was equipped with Bluetooth system, the ISM frequency band of single frequency band certainly will not apply use on channel capacity and transmission rate.Identical situation also will occur in other wireless telecommunication systems that use ISM 2.4GHz, as WLAN and HomeRF.Therefore if can be, just can make the volume-diminished of whole radio communication product and the manufacturing cost that can save product, so that dual-band antenna has is commercioganic expansionary with two frequency range Integration Design at the same antenna.In addition, because all kinds of Wireless electrical appliance products has towards the trend of the little development of volume, therefore could make radio communication product have the preferable market competitiveness if can design compact antenna.
In known double-frequency inverted F shape flat plane antenna design, for example, March 5 calendar year 2001, " the New slot configurations for dual-band planarinverted-F antenna " of the 5th 293-298 page or leaf of MOTL the 28th volume is by implanting U-lag or L shaped seam is to reach the purpose of dual frequency operation on radiation sheet metal.Yet the frequency range of this type of design can't satisfy the required frequency range of two-band simultaneously.In addition, also just like United States Patent (USP) the 5764190th like that with the condenser type feed-in or utilize the mode of capacitive effects to design inverted-F antenna.But this type of antenna can cause the complexity in the design and the increase of cost.
Summary of the invention
In view of the situation of prior art, the purpose of this invention is to provide a kind of double frequency short-circuit plate antenna, not only can satisfy the required frequency range of two-band simultaneously, and simple in structure, cost is low.
In order to realize above-mentioned purpose of the present invention, a kind of double frequency short-circuit plate antenna is provided, comprise a substrate, on a surface of described substrate, be formed with a metal ground strip, on another surface relative of described substrate, be formed with a primary radiation sheet metal and a parasitic sheet metal with being formed with the grounded metal sheet surface, on described primary radiation sheet metal, be formed with a distributing point, a feeder line is connected with described distributing point, on described primary radiation sheet metal, also be formed with one first earth terminal, on described parasitic sheet metal, be formed with one second earth terminal, one first short circuit hardware passes described substrate described first earth terminal is connected with described grounded metal sheet short circuit, one second short circuit hardware passes described substrate described second earth terminal is connected with described grounded metal sheet short circuit, makes described parasitic sheet metal can produce the radiation with first frequency range under the excitation of described primary radiation sheet metal by the mode of energy coupling when one first frequency range; And make described primary radiation sheet metal when being different from second frequency range of described first frequency range for one, can produce radiation with second frequency range, parasitic sheet metal is to small part around the primary radiation sheet metal, and second frequency range radiation of described primary radiation sheet metal and the first frequency range radiation of described parasitic sheet metal are respectively that resonance is in quarter-wave resonance mode radiation.
Plate aerial with short circuit metal bar because plate aerial itself is very little, thereby can reach the little purpose of antenna volume.Adding working length is 1/4 wavelength, so have the little advantage of area.In addition, in antenna of the present invention, utilize the primary radiation sheet metal resonance of short circuit to go out the mode of one 1/4 wavelength, utilize the mode of coupling energy that 1/4 wavelength mode of parasitic short-circuiting jumper also is excited again, and two mode that this is excited can provide dual frequency operation.In the design of the parasitic sheet metal of this kind mode and known short-circuit plate antenna, it is completely different to utilize parasitic short-circuiting jumper to increase the method for frequency range of single operation frequency range.Not only volume is little owing to antenna of the present invention, and can contain simultaneously two operation frequency ranges the frequency range that must ask, add that project organization is simple, cost of manufacture is cheap, therefore have the using value of industry.
Description of drawings
Figure 1A is the schematic perspective view of antenna according to an embodiment of the invention;
Figure 1B is the vertical view of antenna shown in Figure 1A;
Fig. 2 is the reflection loss measurement result of antenna shown in Figure 1A;
Fig. 3 A and Fig. 3 B be respectively antenna shown in Figure 1A in the radiation pattern measurement result of 2.4GHz and two frequency of operation of 5.8GHz;
Fig. 4 A and Fig. 4 B are the measurement result of antenna shown in Figure 1A in 2.4GHz and the gain of two ISM frequency band operations of 5.8GHz frequency range internal antenna;
Fig. 5 A-5E is the structural representation of other embodiment of antenna of the present invention.
Wherein, the meaning of each Reference numeral is:
1: double frequency short-circuit plate antenna according to an embodiment of the invention
11: primary radiation sheet metal (driven patch)
12: parasitic sheet metal (parasitic patch)
13: substrate
14: coaxial feeder
15: the short circuit metal bar
16: the short circuit metal bar
17: grounded metal sheet
111: distributing point
112: the earth terminal of primary radiation sheet metal
121: the earth terminal of parasitic sheet metal
5: other embodiment of double frequency short-circuit plate antenna
51: the primary radiation sheet metal
52: parasitic sheet metal
53: substrate
54: coaxial feeder
55: the short circuit metal bar
56: the short circuit metal bar
57: grounded metal sheet
511: distributing point
512: the earth terminal of primary radiation sheet metal
513: the slit on the sheet metal
521: the earth terminal of parasitic sheet metal
522: the groove on the sheet metal
Embodiment
Shown in Figure 1A, dual frequency flat panel antenna 1 comprises according to an embodiment of the invention: primary radiation sheet metal 11, parasitic sheet metal 12, substrate 13, feeder line 14, the first short circuit metal bar 15 and the second short circuit metal bar 16 and signal ground sheet metal 17.
Grounded metal sheet 17 is in order to join with the signal ground end.Short circuit metal bar 15 and the 16 a kind of forms as the short circuit hardware can certainly replace (as mentioned below) with the short circuit hardware of other shapes.Short circuit metal bar 15 and 16 is connected to the signal ground end to primary radiation sheet metal 11 and parasitic sheet metal 12 respectively.Feeder line 14 is a coaxial feeder, runs through grounded metal sheet 17 and is connected with primary radiation sheet metal 11, in order to transmit signal.Feeder line also is not limited only to coaxial feeder, and other feeder line forms are as microstrip feed line and co-plane waveguide etc.Substrate 13 is between primary radiation sheet metal 11 or parasitic sheet metal 12 and metal ground strip 17, use as the electromagnetic wave propagation medium, perhaps print and support primary radiation sheet metal 11 or parasitic sheet metal 12 in the above, its material can be at the bottom of the microwave-based or directly uses air, also can be air and the arbitrarily combination at the bottom of the microwave-based.
Parasitic sheet metal according to the present invention can produce the radiation with first frequency range by the mode of energy coupling under the excitation of primary radiation sheet metal on one first frequency range; And the primary radiation sheet metal can produce the radiation with second frequency range on second frequency range that is different from described first frequency range.In the present embodiment, first frequency range is the 2.4GHz frequency range, and second frequency range is the 5.8GHz frequency range.Certainly, according to instruction of the present invention, those skilled in the art can design the double frequency short-circuit plate antenna in other frequency range work fully.
In the present embodiment, the size of primary radiation sheet metal 11 is littler than the size of parasitic sheet metal.Because primary radiation sheet metal and the equal resonance of parasitic sheet metal are in the resonance mode of 1/4 wavelength, therefore, the frequency range that primary radiation sheet metal 11 is can be when antenna is provided at high-frequency operation required, and can be when antenna the is provided at the low frequency operation required frequency range of parasitic sheet metal 12.Certainly, if the size of primary radiation sheet metal is littler than the size of parasitic sheet metal, then the primary radiation sheet metal can be provided at low frequency required frequency range of when operation to antenna, and can be when antenna the is provided at high-frequency operation required frequency range of parasitic sheet metal.
Figure 1B is depicted as the radiation sheet metal vertical view, comprising a distributing point 111 and first earth terminal 112 and second earth terminal 121.Distributing point 111 is connected to feeder line 14, and earth terminal 112 and 121 all is connected to grounded metal sheet 17, respectively in order to primary radiation sheet metal 11 and 12 short circuits of parasitic radiation sheet metal are connected to grounded metal sheet 17.Wherein, short circuit metal bar 15 and 16 can make primary radiation sheet metal 11 and first of parasitic radiation sheet metal 12 operate the equal resonance of mode at 1/4 wavelength respectively, thereby makes the size of antenna of the present invention can reach the effect of dwindling.
For the operation frequency range of 2.4GHz, in antenna according to the embodiment of the invention, the parasitic sheet metal 12 of short circuit produces a frequency range enough for 2.4GHz frequency range (2400～2500MHz) mode of using under the mode that primary radiation sheet metal 11 is coupled with electromagnetic wave energy encourages.For the operation frequency range of 5.8GHz, utilize the primary radiation sheet metal 11 of short circuit to produce the enough mode of frequency range for (5725～5850MHz) uses of this frequency range according to the antenna of the embodiment of the invention.
According to the actual measured results of the antenna of the embodiment of the invention respectively at being illustrated among Fig. 2 to Fig. 4.Has only 5 * 20 * 9mm at antenna size
3Down, the operation frequency range of 2.4GHz utilizes parasitic sheet metal 12 to produce the mode of a frequency range for 132MHz (2383-2515MHz) [definition of 1: 2.5 VSWR impedance frequency range], as shown in Figure 2.And in the operation frequency range of 5.8GHz, excite primary radiation sheet metal 11 to obtain the frequency range of 695MHz (5370-6065MHz) [definition of 1: 2 VSWR impedance frequency range] according to the antenna utilization of the embodiment of the invention.Above-mentioned two mode are the resonance mode that resonance is produced when 1/4 wavelength.
Fig. 3 A and Fig. 3 B draw respectively the x-z when operating in 2.45GHz and two resonance frequencys of 5.8GHz and the radiation pattern measurement result on y-z plane, and the relation of antenna gain in 2.4GHz and these two operation frequency ranges of 5.8GHz and frequency is respectively shown in Fig. 4 A and Fig. 4 B.
Fig. 5 A-5E is depicted as other example structure figure according to aerial radiation sheet metal of the present invention.In Fig. 5 A to Fig. 5 E, the primary radiation sheet metal all is denoted as 51, and parasitic sheet metal all is denoted as 52, and the earth terminal of primary radiation sheet metal all is denoted as 512, and the earth terminal of parasitic sheet metal all is denoted as 521, and distributing point all is denoted as 511.As shown in the figure, parasitic sheet metal 52 centers on or partly centers on described primary radiation sheet metal 51.Distributing point can be on the lower sheet metal of frequency, shown in Fig. 5 A.In addition, also can be on primary radiation sheet metal or parasitic sheet metal etching bath in order to adjust frequency, as the groove 513 and 522 of Fig. 5 A.In addition, the short circuit metal bar also can use replacements such as short-circuiting jumper or spiral helicine hardware, in order to adjust impedance matching and fine tuning vibration frequency, as the short-circuiting jumper 55 and 56 of Fig. 5 E.
Comprehensively the above can have enough operation frequency ranges simultaneously so that antenna can provide dual frequency operation according to antenna of the present invention, and can improve the acceptance rate of product.Because antenna volume according to the present invention is little, project organization is simple, is suitable for a large amount of productions, and is with low cost and not fragile, therefore antenna according to the present invention has high industry and using value in practicality in addition.
Claims (7)
1. double frequency short-circuit plate antenna, comprise a substrate, on a surface of described substrate, be formed with a metal ground strip, on another surface relative of described substrate, be formed with a primary radiation sheet metal and a parasitic sheet metal with being formed with the grounded metal sheet surface, on described primary radiation sheet metal, be formed with a distributing point, a feeder line is connected with described distributing point
It is characterized in that, on described primary radiation sheet metal, also be formed with one first earth terminal, on described parasitic sheet metal, be formed with one second earth terminal, one first short circuit hardware passes described substrate described first earth terminal is connected with described grounded metal sheet short circuit, one second short circuit hardware passes described substrate described second earth terminal is connected with described grounded metal sheet short circuit, makes described parasitic sheet metal can produce the radiation with first frequency range under the excitation of described primary radiation sheet metal by the mode of energy coupling on one first frequency range; And make described primary radiation sheet metal on second frequency range that is different from described first frequency range, can produce radiation with second frequency range; Described parasitic sheet metal makes that to small part around described primary radiation sheet metal second frequency range radiation of described primary radiation sheet metal and the first frequency range radiation of described parasitic sheet metal are respectively that resonance is in quarter-wave resonance mode radiation.
2. double frequency short-circuit plate antenna as claimed in claim 1 is characterized in that, is provided with a plurality of grooves on described primary radiation sheet metal.
3. double frequency short-circuit plate antenna as claimed in claim 2 is characterized in that, is provided with a plurality of grooves on described parasitic sheet metal.
4. double frequency short-circuit plate antenna as claimed in claim 1 is characterized in that, at the bottom of described substrate is microwave-based.
5. as the described double frequency short-circuit plate antenna of one of claim 1-3, it is characterized in that described substrate is an air.
6. double frequency short-circuit plate antenna as claimed in claim 1, it is characterized in that, one end of described feeder line and described metal ground strip join and the other end is coupled to described primary radiation sheet metal with energy, and described feeder line is the feeder line group: a kind of in coaxial feeder, microstrip line or the co-plane waveguide.
7. double frequency short-circuit plate antenna as claimed in claim 1 is characterized in that, described first short circuit metal bar and the described second short circuit metal bar be shaped as the shape group: a kind of in linearity, helical form or the sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144029 CN1200478C (en) | 2001-12-27 | 2001-12-27 | Double frequency short-circuit plate antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144029 CN1200478C (en) | 2001-12-27 | 2001-12-27 | Double frequency short-circuit plate antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1428892A CN1428892A (en) | 2003-07-09 |
| CN1200478C true CN1200478C (en) | 2005-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01144029 Expired - Fee Related CN1200478C (en) | 2001-12-27 | 2001-12-27 | Double frequency short-circuit plate antenna |
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| Country | Link |
|---|---|
| CN (1) | CN1200478C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359763B (en) * | 2007-07-30 | 2012-07-25 | 广达电脑股份有限公司 | Double-frequency antenna |
| CN101465465B (en) * | 2007-12-20 | 2013-04-03 | 智易科技股份有限公司 | Double-frequency antenna |
| WO2011059088A1 (en) * | 2009-11-13 | 2011-05-19 | 日立金属株式会社 | Frequency variable antenna circuit, antenna component constituting the same, and wireless communication device using those |
| CN103682581B (en) * | 2012-09-17 | 2015-10-28 | 宏碁股份有限公司 | Mobile device |
| CN103872452B (en) * | 2012-12-14 | 2017-03-01 | 联想(北京)有限公司 | Electronic equipment, antenna and the method for forming antenna |
| CN105470629A (en) * | 2015-12-31 | 2016-04-06 | 南京濠暻通讯科技有限公司 | Wearable annular dual-frequency button antenna |
| CN105870586A (en) * | 2016-01-06 | 2016-08-17 | 乐视移动智能信息技术（北京）有限公司 | Dual-frequency wireless fidelity (WI-FI) antenna and mobile terminal |
| CN109449578B (en) * | 2018-10-24 | 2020-02-04 | 西安电子科技大学 | Quasi-omnidirectional antenna with compact structure and wide frequency band |
| CN109687125B (en) * | 2018-12-11 | 2020-10-16 | 西安电子科技大学 | Ultra-low profile dual-frequency wide-beam microstrip antenna based on multi-mode fusion |
| CN110336124B (en) * | 2019-05-21 | 2020-10-30 | 西安电子科技大学 | Bandwidth enhancement compact microstrip antenna based on dual-mode fusion and wireless communication system |
| CN111541019A (en) * | 2020-04-25 | 2020-08-14 | 华南理工大学 | Low-profile vertical polarization high-gain omnidirectional antenna |
| CN114976592B (en) * | 2021-02-20 | 2024-06-04 | 北京小米移动软件有限公司 | Antenna structure and terminal equipment |
-
2001
- 2001-12-27 CN CN 01144029 patent/CN1200478C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1428892A (en) | 2003-07-09 |
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Owner name: HONHQI CO., LTD. Free format text: FORMER OWNER: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE Effective date: 20081024 |
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Effective date of registration: 20081024 Address after: Taiwan County, Taipei, China Patentee after: Acer Inc Address before: Hsinchu County of Taiwan Province Patentee before: Industrial Technology Research Institute |
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Granted publication date: 20050504 Termination date: 20191227 |
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