CN102891356B - A kind of antenna and there is the MIMO antenna of this antenna - Google Patents
A kind of antenna and there is the MIMO antenna of this antenna Download PDFInfo
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- CN102891356B CN102891356B CN201110145183.2A CN201110145183A CN102891356B CN 102891356 B CN102891356 B CN 102891356B CN 201110145183 A CN201110145183 A CN 201110145183A CN 102891356 B CN102891356 B CN 102891356B
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Abstract
The present invention discloses a kind of antenna, it comprises first medium substrate close to each other and second medium substrate, described first medium substrate has relative first surface and second surface, on described first surface, be provided with the first sheet metal and the first feeder line, on described second surface, be provided with the second sheet metal and the second feeder line, described the first feeder line and described the second feeder line are with the first sheet metal and described the second sheet metal described in the feed-in of coupled modes difference; Described the first feeder line and described the second feeder line electrical connection; The side surface that described second medium substrate is relative with described first medium substrate second surface is provided with the 3rd sheet metal, and described the 3rd sheet metal is electrically connected with described the second feeder line; The first micro groove structure of engraving respectively on described the first sheet metal and the second sheet metal and the second micro groove structure. The present invention, by the setting of multilayered metal film, effectively expands the swept area of feeder line, while making antenna be operated in low frequency, still has less size and good performance. The present invention simultaneously also discloses a kind of MIMO antenna that comprises above-mentioned antenna, and this MIMO antenna has high-isolation.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of antenna for wireless communication field and there is the MIMO antenna of this antenna.
Background technology
Along with the high development of semiconductor technology, current electronic system integrated level has been proposed to more and more higher requirement, the miniaturization of device becomes the technical problem that whole industry is paid special attention to. But, be different from IC chip and follow the development of " Moore's Law ", as other important composition---the radio-frequency module of electronic system, be but faced with the highly difficult technological challenge of device miniaturization. Radio-frequency module has mainly comprised the main devices such as mixing, power amplifier, filtering, radio signal transmission, matching network and antenna. Wherein, antenna is as radiating element and the receiving device of final radiofrequency signal, and its operating characteristic will directly affect the service behaviour of whole electronic system. But the important indicators such as the size of antenna, bandwidth, gain have but been subject to the restriction (gain margin, bandwidth limit etc. under fixed dimension) of basic physical principle. The general principle of these index limit makes the miniaturization technology difficulty of antenna considerably beyond other device, and due to the complexity of the electromagnetic field analysis of radio-frequency devices, approaching these limiting values all becomes huge technological challenge.
Meanwhile, complicated along with contemporary electronic systems, the demand of multimode service becomes more and more important in the systems such as radio communication, wireless access, satellite communication, radio data network. And the demand of multimode service has further increased the complexity of miniature antenna multimodes design. Remove the technological challenge of miniaturization, the multimode impedance matching of antenna also becomes the bottleneck of antenna technology. On the other hand, multi-input multi-output system (MIMO) has further required harshly the miniaturization of antenna size and has ensured good isolation, radiance and antijamming capability simultaneously at the high speed development in radio communication, wireless data service field. But the traditional terminal communication antenna mainly radiation theory based on electric monopole or dipole designs, such as the most frequently used planar inverted-F antenna (PIFA). Directly and the size positive correlation of antenna, the area positive correlation of bandwidth and antenna, makes the design of antenna conventionally need the physical length of half-wavelength for the Radiation work frequency of traditional antenna. In some more complicated electronic systems, antenna needs multimode operation, just need to design by the impedance matching network outside feed antenna forehead. But the increase that impedance matching network is extra the feeder line design of electronic system, increased radio system area simultaneously matching network also introduced many energy losses, be difficult to meet the requirement of system design of low-power consumption. Therefore, miniaturization, multimodal new antenna technology become an important technology bottleneck of contemporary electronics integrated system.
Summary of the invention
Technical problem to be solved by this invention is, for the above-mentioned deficiency of prior art, proposes a kind ofly make antenna in the time of low frequency operation, still can ensure the antenna of its miniaturization and have the MIMO antenna of this antenna.
The technical scheme that the present invention solves its technical problem employing is, a kind of antenna is proposed, it comprises first medium substrate close to each other and second medium substrate, described first medium substrate has relative first surface and second surface, on described first surface, be provided with the first sheet metal and the first feeder line, on described second surface, be provided with the second sheet metal and the second feeder line, described the first feeder line and described the second feeder line are with the first sheet metal and described the second sheet metal described in the feed-in of coupled modes difference; Described the first feeder line and described the second feeder line electrical connection; The side surface that described second medium substrate is relative with described first medium substrate second surface is provided with the 3rd sheet metal, and described the 3rd sheet metal is electrically connected with described the second feeder line; The first micro groove structure and the second micro groove structure on described the first sheet metal and the second sheet metal, are engraved respectively.
Further, described first medium substrate and described second medium substrate are made up of ceramic material, macromolecular material, ferrite material or ferromagnetic material.
Further, described the first micro groove structure is a kind of in complementary opening resonance loop structure, complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure or by the micro groove structure that several structures are derivative, compound or group battle array obtains above.
Further, described the second micro groove structure is a kind of in complementary opening resonance loop structure, complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure or by the micro groove structure that several structures are derivative, compound or group battle array obtains above.
Further, described the first micro groove structure and described the second micro groove structure by etching, bore carve at quarter, etching, brill quarter, photoetching, electronics, ion carves hollow out on described the first sheet metal and the second sheet metal.
Further, described the first feeder line and described the second feeder line are by being arranged at the plated-through hole electrical connection of described first medium substrate.
Further, described the second feeder line and described the 3rd sheet metal are by being arranged at the plated-through hole electrical connection of described second medium substrate.
Further, between described the first feeder line and described the first sheet metal, also comprising can short circuit point, described the first feeder line by described can short circuit point with the first sheet metal described in inductive coupled mode feed-in.
Further, between described the second feeder line and described the second sheet metal, also comprising can short circuit point, described the second feeder line by described can short circuit point with the second sheet metal described in inductive coupled mode feed-in.
The present invention also provides a kind of MIMO antenna, and it comprises multiple antennas claimed in claim 1.
The present invention, by the setting of multilayered metal film, effectively expands the swept area of feeder line, while making antenna be operated in low frequency, still has less size and good performance. The present invention simultaneously also discloses a kind of MIMO antenna that comprises above-mentioned antenna, and this MIMO antenna has high-isolation.
Brief description of the drawings
Fig. 1 is antenna first medium substrate A face view structure schematic diagram of the present invention;
Fig. 2 is antenna first medium substrate B face view structure schematic diagram of the present invention;
Fig. 3 is antenna second medium board structure schematic diagram of the present invention;
Fig. 4 a is the schematic diagram of complementary opening resonance loop structure;
Fig. 4 b is depicted as the schematic diagram of complementary helix structure;
Fig. 4 c is depicted as the schematic diagram of opening helical ring structure;
Fig. 4 d is depicted as the schematic diagram of two opening helical ring structures;
Fig. 4 e is depicted as the schematic diagram of complementary folding line structure;
Fig. 5 a is the derivative schematic diagram of its geometry of complementary opening resonance loop structure shown in Fig. 4 a;
Fig. 5 b is the derivative schematic diagram of its expansion of the complementary opening resonance loop structure shown in Fig. 4 a;
Fig. 6 a is the structural representation after three complementary opening resonance loop structures shown in Fig. 4 a compound;
Fig. 6 b is the compound schematic diagram that the complementary opening resonance loop structure shown in two Fig. 4 a and Fig. 4 b are depicted as complementary helix structure;
Fig. 7 is the structural representation after the complementary opening resonance loop structure group battle array shown in four Fig. 4 a.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention will be further described:
As shown in Figure 1 to Figure 3, antenna of the present invention comprises first medium substrate 1 and second medium substrate 2, and first medium substrate 1 has two relative A face and B faces. A face is provided with the first sheet metal 10, and the first feeder line 11 that part arranges around the first sheet metal 10 is engraved the first micro groove structure 12 forming on the first sheet metal 10; B face is provided with the second sheet metal 100 corresponding to A face, and the second feeder line 101 that part arranges around the second sheet metal 100 is engraved the second micro groove structure 102 forming on the second sheet metal 100. Second medium substrate 2 is arranged at the B face close contact of first medium substrate below and second medium substrate 2 one side surfaces and first medium substrate 1, and relative opposite side surface is provided with the 3rd sheet metal 1000.
The first feeder line 11 and the second feeder line 101 are all by coupled modes feed-in the first micro groove structure 12 and the second micro groove structure 102 separately. Coupled modes can be inductive coupled mode and also can be capacitive coupling mode. When adopting when inductive coupled mode, between the first feeder line 11 and the first micro-structural 12, the second feeder line 101 and the second micro groove structure 102, exist and can put to be connected the two by short circuit; In the time adopting capacitive coupling mode, between the first feeder line 11 and the first micro-structural 12, the second feeder line 101 and the second micro groove structure 102, mutually do not contact, but both relative parts formation coupling capacitances make the two formation capacitive coupling.
The first micro groove structure 12 and the second micro groove structure 102 can be a kind of in the complementary folding line structure shown in the two opening helical ring structures shown in the opening helical ring structure shown in the complementary helix structure shown in the complementary opening resonance loop structure shown in Fig. 4 a, Fig. 4 b, Fig. 4 c, Fig. 4 d, Fig. 4 e or by the micro groove structure that several structures are derivative, compound or group battle array obtains above. Derive and be divided into two kinds, one is that geometry is derivative, another kind is that expansion is derivative, and geometry is herein derivative refers to that function class is derivative like, variform structure, for example, derived to class of a curve structure, triangle class formation and other different polygon class formation by square frame class formation; Expansion herein derives offers new groove to form new micro groove structure on the basis of Fig. 4 a to Fig. 4 e; Taking the complementary opening resonance loop structure shown in Fig. 4 a as example, Fig. 5 a is the derivative schematic diagram of its geometry, and Fig. 5 b is the derivative schematic diagram of its geometry. Compound referring to herein, the multiple stacks of the micro groove structure of Fig. 4 a to Fig. 4 e form a new micro groove structure, as shown in Figure 6 a, are the structural representation of the complementary opening resonance loop structure shown in three Fig. 4 a after compound; As shown in Figure 6 b, be that the complementary opening resonance loop structure shown in two Fig. 4 a and Fig. 4 b are depicted as the common structural representation after compound of complementary helix structure. Group battle array herein refers to by the micro groove structure array on same sheet metal shown in multiple Fig. 4 a to Fig. 4 e and forms an overall micro groove structure, as shown in Figure 7, is the structural representation after multiple complementary opening resonance loop structure group battle arrays as shown in Fig. 4 a. The first micro groove structure 12 and the second micro groove structure 102 are all set forth as an example of the opening helical ring structure shown in Fig. 4 c example below.
On the first sheet metal 10 and the second sheet metal 100, engrave that the mode that forms the first micro groove structure 12 and the second micro groove structure 102 can be etching, bores quarter, photoetching, electronics are carved, ion quarter etc. technique, wherein be etched to selection process, its key step is to design after suitable micro groove structure, then by etching machines, utilize the chemical reaction of solvent and metal to get rid of to preset the paillon foil part of micro groove structure can obtain being formed with the sheet metal of above-mentioned micro groove structure. The material of above-mentioned tinsel can be the metal such as copper, silver.
When the same day, line worked in low-frequency range, the wavelength that the electromagnetic wave of low-frequency range is corresponding is longer, according to Antenna Design principle, the electric radiation length of feeder will increase thereupon and make feeder line physical length elongated, and longer feeder line also makes feeder loss increase simultaneously not only bad for the miniaturization of antenna entirety antenna overall performance is declined.
Discuss in detail the detailed technology scheme of technical solution problem of the present invention below.
On antenna first medium substrate 1 of the present invention and second medium substrate 2, be provided with the first sheet metal 10, the first feeder line 11, the second sheet metal 100, the second feeder line 101. The first feeder line 11 and the second feeder line 101 interconnect by plated-through hole 3.
The present invention increases the effective radiating area of feeder line under the prerequisite that does not change feeder line physical length from two aspects. First aspect is by being arranged at the first sheet metal 10 and the second sheet metal 100 on first medium substrate 1, increases the swept area of feeder line by two sheet metals coupled relation each other. The first sheet metal 10 of 1 liang of apparent surface of first medium substrate can be connected with the second sheet metal 100, also can not connect. In the first sheet metal 10 and the unconnected situation of the second sheet metal 100, between the first sheet metal 10 and the second sheet metal 100 by capacitively coupled mode feed; In such cases, can realize the resonance of the first sheet metal 10 and the second sheet metal 100 by changing the thickness of medium substrate. For example, in the situation that the first sheet metal 10 is electrically connected with the second sheet metal 100 (being connected by the form of wire or plated-through hole), between the first sheet metal 10 and the second sheet metal 100 by inductive coupled mode feed.
Second aspect, the 3rd sheet metal 1000 that is arranged at second medium substrate 2 is coupled with the second sheet metal 100 that is arranged at first medium substrate B face, and to the second micro groove structure 102 forming on the second sheet metal 100 feed that is coupled. On second medium substrate 2, be formed with plated-through hole 4, plated-through hole 4 can with first medium substrate on plated-through hole 3 on a vertical plane, also can mutually stagger. Plated-through hole 4 is electrically connected the second feeder line 101 and the 3rd sheet metal 1000. The be coupled area of feed of the 3rd sheet metal 1000 is easy to regulate, and only needs simply to adjust the coupling feed area of the 3rd sheet metal 1000 for different working frequency range.
The present invention also provides a kind of multiple-input and multiple-output (MIMO) antenna that comprises multiple above-mentioned antennas, in this MIMO antenna, each first feeder line and each second feeder line all access a transmitter/receiver, and all transmitter/receivers are connected in baseband signal processor.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; instead of restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, also can make a lot of forms, within these all belong to protection of the present invention.
Claims (8)
1. an antenna, is characterized in that: comprise first medium substrate close to each other and second medium substrate,Described first medium substrate has relative first surface and second surface, is provided with on described first surfaceOne sheet metal and the first feeder line, be provided with the second sheet metal and the second feeder line, institute on described second surfaceState the first feeder line and described the second feeder line with the first sheet metal and described the second gold medal described in the feed-in of coupled modes differenceBelong to sheet; Described the first feeder line and described the second feeder line electrical connection; Described second medium substrate and described first is situated betweenThe side surface that matter substrate second surface is relative is provided with the 3rd sheet metal, described the 3rd sheet metal and describedTwo feeder line electrical connections; The first micro groove structure and on described the first sheet metal and the second sheet metal, are engraved respectivelyTwo micro groove structures; Wherein, described the 3rd sheet metal is square shape and does not form micro groove structure, and the described the 3rdSheet metal and the second sheet metal coupling that is arranged at described second surface, and to forming on described the second sheet metalDescribed the second micro groove structure coupling feed, described the first feeder line and described the second feeder line are by described in being arranged atPlated-through hole electrical connection and the tie point of first medium substrate are arranged on described the first feeder line, and described secondFeeder line and described the 3rd sheet metal are by being arranged at the plated-through hole electrical connection of described second medium substrate and connectingContact is arranged on described the second feeder line.
2. antenna as claimed in claim 1, is characterized in that: described first medium substrate and described secondMedium substrate is made up of ceramic material, macromolecular material, ferrite material or ferromagnetic material.
3. antenna as claimed in claim 1, is characterized in that: described the first micro groove structure is complementary openingMouthful resonant ring structure, complementary helix structure, opening helical ring structure, two opening helical ring structure andA kind of in complementary folding line structure or derivative, compound or group battle array obtains by several structures aboveMicro groove structure.
4. antenna as claimed in claim 1, is characterized in that: described the second micro groove structure is complementary openingMouthful resonant ring structure, complementary helix structure, opening helical ring structure, two opening helical ring structure andA kind of in complementary folding line structure or derivative, compound or group battle array obtains by several structures aboveMicro groove structure.
5. the antenna as described in claim 1 or 3 or 4, is characterized in that: described the first micro groove structure andDescribed the second micro groove structure by etching, bore carve at quarter, etching, brill quarter, photoetching, electronics, ion carves hollow outOn described the first sheet metal and the second sheet metal.
6. antenna as claimed in claim 1, is characterized in that: described the first feeder line and described the first metalBetween sheet, also comprising can short circuit point, described the first feeder line by described can short circuit point with inductive coupled mode feed-inDescribed the first sheet metal.
7. antenna as claimed in claim 1, is characterized in that: described the second feeder line and described the second metalBetween sheet, also comprising can short circuit point, described the second feeder line by described can short circuit point with inductive coupled mode feed-inDescribed the second sheet metal.
8. a MIMO antenna, is characterized in that: comprise multiple antennas claimed in claim 1.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110145183.2A CN102891356B (en) | 2011-05-31 | 2011-05-31 | A kind of antenna and there is the MIMO antenna of this antenna |
| PCT/CN2011/080447 WO2012129901A1 (en) | 2011-04-01 | 2011-09-30 | Antenna and mimo antenna having the antenna |
| TW100135512A TWI517491B (en) | 2011-04-01 | 2011-09-30 | An antenna and mimo antenna with the antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110145183.2A CN102891356B (en) | 2011-05-31 | 2011-05-31 | A kind of antenna and there is the MIMO antenna of this antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102891356A CN102891356A (en) | 2013-01-23 |
| CN102891356B true CN102891356B (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110145183.2A Active CN102891356B (en) | 2011-04-01 | 2011-05-31 | A kind of antenna and there is the MIMO antenna of this antenna |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101667680A (en) * | 2009-08-31 | 2010-03-10 | 深圳市启汉科技有限公司 | Monopole radio frequency antenna |
| CN101740862A (en) * | 2008-11-20 | 2010-06-16 | 东莞市启汉电子科技有限公司 | Dipole antenna of RF chip |
-
2011
- 2011-05-31 CN CN201110145183.2A patent/CN102891356B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101740862A (en) * | 2008-11-20 | 2010-06-16 | 东莞市启汉电子科技有限公司 | Dipole antenna of RF chip |
| CN101667680A (en) * | 2009-08-31 | 2010-03-10 | 深圳市启汉科技有限公司 | Monopole radio frequency antenna |
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| CN102891356A (en) | 2013-01-23 |
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