CN106299630A - A kind of four band antennas of added metal shell - Google Patents
A kind of four band antennas of added metal shell Download PDFInfo
- Publication number
- CN106299630A CN106299630A CN201510170647.3A CN201510170647A CN106299630A CN 106299630 A CN106299630 A CN 106299630A CN 201510170647 A CN201510170647 A CN 201510170647A CN 106299630 A CN106299630 A CN 106299630A
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- minor matters
- resonance minor
- metal shell
- mems switch
- antenna
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Abstract
The invention provides four band antennas of a kind of added metal shell, including medium substrate, antenna pattern, RF mems switch and the metal shell of a side opening, described RF mems switch and antenna pattern are in approximately the same plane, in antenna pattern, control the length of resonance minor matters by RF mems switch thus realize the operating characteristic of four frequency ranges；Described medium substrate is made up of upper and lower two-layer, and upper strata is glass-epoxy (FR4) material, and lower floor is the thin slice that ferrum oxidation material is made, and antenna pattern and RF mems switch are distributed in upper exterior surfaces.The present invention can reduce the metal object interference to the radiance of antenna, makes the radiation efficiency of antenna keep stable, and the shell of the relatively common material of volume of metal shell has reduced.
Description
Technical field
The present invention relates to a kind of antenna, particularly relate to four band antennas of a kind of added metal shell.
Background technology
Traditional paster antenna can increase (such as fluting, adding new resonance minor matters, use higher order resonances etc.) resonance band of antenna by certain technology, realize the multifrequency of antenna, but the introducing of these technology so that the becoming large-sized of antenna, structure complicates, and is unfavorable for miniaturization, simplification.In actual application, it usually needs installing metal-back additional in the outside of antenna, when the electromagnetic wave so launched through antenna runs into, metal-back will reflect, thus the radiation efficiency of antenna is caused to decline and cannot use.
Summary of the invention
The technical problem to be solved is to provide four band antennas of a kind of added metal shell, it is intended to realizes miniaturization and improves the radiation efficiency of antenna.To this end, the present invention is by the following technical solutions:
A kind of four frequency range paster antennas of added metal shell, it is characterized in that it includes medium substrate, antenna pattern, RF mems switch and the metal shell of a side opening, described RF mems switch and antenna pattern are in approximately the same plane, in antenna pattern, controlled the length of resonance minor matters by RF mems switch；Described medium substrate is made up of upper and lower two-layer, and upper strata is glass-epoxy (FR4) material, and lower floor is the thin slice that ferrum oxidation material is made, and antenna pattern and RF mems switch are distributed in upper exterior surfaces.
Using on the basis of technique scheme, the present invention also can use technical scheme further below:
The mouth that metal shell is opened is square, and the foursquare length of side is 1/4th of antenna operating wavelength.
Described metal shell is made up of inside and outside two-layer, and outer layer is metal shell, the thin slice that the outer Ferrite Material of internal layer is made.
Described thin slice is based on required pcrmeability and selects.
In antenna pattern, resonance minor matters are 1/4th of required frequency spectrums of operation wavelength, are controlled the length of resonance minor matters by RF mems switch.
When RF mems switch closes, the length of resonance minor matters, the operating frequency step-down of antenna；When RF mems switch disconnects, the length of resonance minor matters shortens, and the operating frequency of antenna uprises.
In antenna pattern, it is provided with the first resonance minor matters, the second resonance minor matters, the 3rd resonance minor matters, the 4th resonance minor matters, there is a RF mems switch between first resonance minor matters and the second resonance minor matters, between the 3rd resonance minor matters and the 4th resonance minor matters, have the 2nd RF mems switch；When a RF mems switch is connected when, the first resonance minor matters are connected with the second resonance minor matters, form resonance minor matters, it is achieved the working frequency range of GSM 900MHz, only have the first resonance minor matters connection during disconnection, and now Antenna Operation is at 2.4GHz；When the 2nd RF mems switch is connected when, the 3rd resonance minor matters connect with the 4th resonance minor matters, form resonance minor matters, it is achieved the working frequency range of GSM 1800MHz, only have the 3rd resonance minor matters connection during disconnection, and now Antenna Operation is at 5.8GHz.
Grounded metal sheet and resonance minor matters, in approximately the same plane, are conducive to and other circuit are integrated on one piece of circuit board.
The antenna of the present invention includes the thin slice connecting the RF mems switch of resonance minor matters, ferrum oxidation material is made.Described resonance minor matters control the working frequency range of antenna by " the leading to ", " breaking " of RF mems switch, thus realize the operating characteristic of four frequency ranges.Described thin slice is Ferrite Material, owing to this material has high magnetic permeability and high resistivity, when distance between antenna and metal shell is close, foil falls between, the echo of metal object can be changed into the energy (such as heat energy) of other forms, thus reduce the metal object interference to the radiance of antenna, and make the radiation efficiency of antenna keep stable, the shell of the relatively common material of volume of metal shell has reduced.
Accompanying drawing explanation
Fig. 1 is inventive antenna pattern schematic diagram.
Fig. 2 is the placement schematic diagram of inventive antenna and metal-back.
Detailed description of the invention
Referring to the drawings.Four frequency range paster antennas 10 of a kind of added metal shell provided by the present invention include antenna pattern the 100, the oneth RF mems switch the 101, the 2nd RF mems switch 102, distributing point 103, distributing point 104, medium substrate, metal shell 50, and medium substrate is made up of upper strata 22 and lower sheet 33.Antenna pattern 100 is in the outer surface on medium substrate upper strata 22, and antenna pattern 100 is made up of first resonance minor matters the 1001, second resonance minor matters the 1002, the 3rd resonance minor matters the 1003, the 4th resonance minor matters 1004 and RF mems switch the 101, a 2nd RF mems switch 102.When a RF mems switch 101 is connected when, the first resonance minor matters 1001 are connected with the second resonance minor matters 1002, form resonance minor matters, realizing the working frequency range of GSM 900MHz, only have the first resonance minor matters 1001 to connect during disconnection, now Antenna Operation is at 2.4GHz.When the 2nd RF mems switch 102 is connected when, the 3rd resonance minor matters 1003 connect with the 4th resonance minor matters 1004, form resonance minor matters, realizing the working frequency range of GSM 1800MHz, only have the 3rd resonance minor matters 1003 to connect during disconnection, now Antenna Operation is at 5.8GHz.
Medium substrate is placed on the lower section of the mouth 40 that metal shell is opened.
Grounded metal sheet 105 and resonance minor matters, in approximately the same plane, are conducive to and other circuit are integrated on one piece of circuit board.
The length of the metal shell opening of the above-mentioned antenna operation wavelength equal to 1/4th.
The resonance minor matters of the above-mentioned antenna operation wavelength equal to 1/4th.
Above-mentioned RF mems switch, due to advantages such as its insertion loss are little, isolation is high, power is low, volume is little, can be applied on antenna 10, it is achieved the control of operating frequency of antenna.Between beam and hearth electrode, there will be electrostatic field when applying certain voltage, and produce electrostatic force and attract beam to offset downward, until beam end is in the holding wire contact disconnected, thus form path.Otherwise, open circuit is formed.
Upper strata 22 uses FR4(glass-epoxy) material makes, and it is in this side near metal shell opening.Metal shell 50 has two-layer to constitute, and is made up of ferrum oxidation material including outer layer metal 500 and internal layer thin slice 501, thin slice 33 and thin slice 501, is selected this material by required pcrmeability.Owing to resistivity and the pcrmeability of Ferrite Material are the highest, when antenna 10 is near metal-back 50, thin slice 33 and thin slice 501 are between metal-back 50 and antenna pattern 100, it is possible to the echo of metal-back 50 is converted into the energy (mainly heat energy) of other forms and is consumed.Distance between antenna pattern 100 and metal shell 50 is close simultaneously, has so reduced relative to common metal shell volume, has saved cost, and can ensure the reliability service of antenna 10.
The above is only embodiment of the present invention, it is noted that for those skilled in the art, can also make some improvement under the premise without departing from the principles of the invention, and these improvement also should be regarded as protection scope of the present invention.
Claims (8)
1. four band antennas of an added metal shell, it is characterized in that it includes medium substrate, antenna pattern, RF mems switch and the metal shell of a side opening, described RF mems switch and antenna pattern are in approximately the same plane, in antenna pattern, controlled the length of resonance minor matters by RF mems switch；Described medium substrate is made up of upper and lower two-layer, and upper strata is glass-epoxy (FR4) material, and lower floor is the thin slice that ferrum oxidation material is made, and antenna pattern and RF mems switch are distributed in upper exterior surfaces.
Four band antennas of a kind of added metal shell the most according to claim 1, it is characterised in that the mouth that metal shell is opened is square, and the foursquare length of side is 1/4th of antenna operating wavelength.
Four band antennas of a kind of added metal shell the most according to claim 1, it is characterised in that described metal shell is made up of inside and outside two-layer, outer layer is metal shell, the thin slice that the outer Ferrite Material of internal layer is made.
4. according to four band antennas of a kind of added metal shell described in claim 1 or 3, it is characterised in that: described thin slice is based on required pcrmeability and selects.
Four band antennas of a kind of added metal shell the most according to claim 1, it is characterised in that: in antenna pattern, resonance minor matters are 1/4th of required frequency spectrums of operation wavelength, are controlled the length of resonance minor matters by RF mems switch.
Four band antennas of a kind of added metal shell the most according to claim 1, it is characterised in that: when RF mems switch closes, the length of resonance minor matters, the operating frequency step-down of antenna；When RF mems switch disconnects, the length of resonance minor matters shortens, and the operating frequency of antenna uprises.
Four band antennas of a kind of added metal shell the most according to claim 1, it is characterized in that: in antenna pattern, it is provided with the first resonance minor matters, the second resonance minor matters, the 3rd resonance minor matters, the 4th resonance minor matters, there is a RF mems switch between first resonance minor matters and the second resonance minor matters, between the 3rd resonance minor matters and the 4th resonance minor matters, have the 2nd RF mems switch；When a RF mems switch is connected when, the first resonance minor matters are connected with the second resonance minor matters, form resonance minor matters, it is achieved the working frequency range of GSM 900MHz, only have the first resonance minor matters connection during disconnection, and now Antenna Operation is at 2.4GHz；When the 2nd RF mems switch is connected when, the 3rd resonance minor matters connect with the 4th resonance minor matters, form resonance minor matters, it is achieved the working frequency range of GSM 1800MHz, only have the 3rd resonance minor matters connection during disconnection, and now Antenna Operation is at 5.8GHz.
Four band antennas of a kind of added metal shell the most according to claim 1, it is characterised in that: grounded metal sheet and resonance minor matters, in approximately the same plane, are conducive to and other circuit are integrated on one piece of circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510170647.3A CN106299630A (en) | 2015-04-12 | 2015-04-12 | A kind of four band antennas of added metal shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510170647.3A CN106299630A (en) | 2015-04-12 | 2015-04-12 | A kind of four band antennas of added metal shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106299630A true CN106299630A (en) | 2017-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510170647.3A Pending CN106299630A (en) | 2015-04-12 | 2015-04-12 | A kind of four band antennas of added metal shell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968252A (en) * | 2017-11-30 | 2018-04-27 | 维沃移动通信有限公司 | A kind of antenna assembly and mobile terminal |
| WO2024000306A1 (en) * | 2022-06-29 | 2024-01-04 | 京东方科技集团股份有限公司 | Tunable antenna, preparation method for tunable antenna, and electronic device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090091954A (en) * | 2008-02-26 | 2009-08-31 | 엘지전자 주식회사 | Tunable antenna and portable terminal using the same |
| US20130271329A1 (en) * | 2012-04-13 | 2013-10-17 | Koichi Sato | Wireless terminal apparatus |
| CN103943959A (en) * | 2013-01-23 | 2014-07-23 | 仁宝电脑工业股份有限公司 | Electronic device and antenna unit thereof |
| CN204067571U (en) * | 2014-06-06 | 2014-12-31 | 昆山联滔电子有限公司 | Antenna |
-
2015
- 2015-04-12 CN CN201510170647.3A patent/CN106299630A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090091954A (en) * | 2008-02-26 | 2009-08-31 | 엘지전자 주식회사 | Tunable antenna and portable terminal using the same |
| US20130271329A1 (en) * | 2012-04-13 | 2013-10-17 | Koichi Sato | Wireless terminal apparatus |
| CN103943959A (en) * | 2013-01-23 | 2014-07-23 | 仁宝电脑工业股份有限公司 | Electronic device and antenna unit thereof |
| CN204067571U (en) * | 2014-06-06 | 2014-12-31 | 昆山联滔电子有限公司 | Antenna |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968252A (en) * | 2017-11-30 | 2018-04-27 | 维沃移动通信有限公司 | A kind of antenna assembly and mobile terminal |
| WO2024000306A1 (en) * | 2022-06-29 | 2024-01-04 | 京东方科技集团股份有限公司 | Tunable antenna, preparation method for tunable antenna, and electronic device |
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Application publication date: 20170104 |
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| WD01 | Invention patent application deemed withdrawn after publication |