CN110459869A - A kind of element microstrip monopole antenna based on PEG structure - Google Patents
A kind of element microstrip monopole antenna based on PEG structure Download PDFInfo
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- CN110459869A CN110459869A CN201910753890.6A CN201910753890A CN110459869A CN 110459869 A CN110459869 A CN 110459869A CN 201910753890 A CN201910753890 A CN 201910753890A CN 110459869 A CN110459869 A CN 110459869A
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- antenna
- peg structure
- monopole antenna
- monopole
- element microstrip
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/06—Details
- H01Q9/065—Microstrip dipole antennas
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Abstract
The invention discloses a kind of element microstrip monopole antennas based on PEG structure, and using short medium substrate, the monopole antenna on short medium substrate uses warp architecture, to obtain longer antenna length and broader coupling bandwidth；It extends up to form PEG structure in the middle position of antenna back-side ground plane, opens up U-lag in PEG structure, so that extending coupling inhibits bandwidth, enhancing coupling depression effect, meanwhile a grooving is respectively opened up in the left and right edges of ground plane, to achieve the purpose that increase matching and decoupling bandwidth.In no any discrete element (such as chip inductor, capacitor etc.) of addition, and in the case where no addition excessive microstrip line, the microstrip antenna coupling for realizing Two-port netwerk inhibits and matches structure of the invention.
Description
Technical field
The present invention relates to wireless communication multiple antenna transmission technique fields, more particularly, to a kind of binary based on PEG structure
Microstrip-monopole sub-antenna.
Background technique
MIMO (Multiple-input and Multiple-output, multiple-input, multiple-output) multiple antenna transmission technique is to realize
One of the important means of high speed data transfer in limited frequency band.The third generation mobile communication systems such as modern 5G, whether for base
It stands for the small devices such as side or mobile terminal, all needs to configure large number of dual-mode antenna on limited fitting surface.
But, since narrow assembly space significantly limits the spacing between bay, so by nothing between bay
Cause strong electromagnetic coupling effect avoidablely, this will Antenna Impedance Matching, radiation efficiency and in terms of pole
The earth reduces the original design performance of system, it is therefore necessary to which the simply effective multiaerial system coupling of research inhibits and pair net
Network technology.
It is more and more with the continuous development of the increasingly Miniaturization Design demand and antenna technology itself of wireless communication system
MIMO multi-aerial transmission system using small size microstrip antenna as base station or the dual-mode antenna of mobile terminal.Such as Fig. 1
It is shown, be with the binary monopole antenna being implemented on PCB (Printed Circuit Board, printed circuit board) circuit board
Example, gives the compact binary with local expansion ground plane (Partially Extended Ground, PEG) structure
The coupling of microstrip-monopole inhibits array antenna structure figure, and wherein PEG structure is extended up out from the intermediate position of ground plane
Come a part of and realize, antenna assumption diagram includes PEG structure in back-side ground plane, positive microstrip circuit on dielectric-slab
With two monopole antennas.The PEG structure for rationally designing medium back, can obtain preferable array element coupling and net mate
Inhibitory effect；Compared with the coupling of traditional circuit level inhibits network, PEG coupling inhibits structure whether structure size or micro-
On band circuit production, there is unrivaled advantage.
Summary of the invention
The purpose of the present invention is to provide a kind of element microstrip monopole antenna based on PEG structure, based on PEG structure into
The coupling of row element microstrip monopole antenna array inhibits the circuit design of matching network, to realize wide matching and wide decoupling band
Wide purpose.
The technical solution adopted by the invention is as follows:
A kind of element microstrip monopole antenna based on PEG structure, the element microstrip monopole antenna use short medium
Substrate；
Two monopole antennas in the antenna face on short medium substrate are warp architecture；
The middle position of the antenna back-side ground plane extends up to form PEG structure；U is opened up in the PEG structure
Shape slot；
A grooving is respectively opened up in the left and right edges of the ground plane.
Further, the element microstrip monopole antenna is using metallic copper as short medium substrate.
Further, the size of the short medium substrate is 25mm × 35mm.
Further, the generation type of the warp architecture are as follows: two monopole antennas are first to 90 degree of center curvature, bending
Length is 4.9mm, then is bent upwards, finally cuts the isosceles right angle trigonometry that a right-angle side is 2.5mm in crooked position
Shape.
Further, the size of the U-lag, position and width pass through according to required antenna-reflected performance parameter
HFSS emulation adjustment determines.
Further, the width of two monopole antennas is set as 0.032 operation wavelength, and monopole antenna length is set
It is set to 0.45 operation wavelength, two monopole antenna spacing are set as 0.208 operation wavelength.
Further, the size of the grooving is true by HFSS emulation adjustment according to required antenna-reflected performance parameter
It is fixed.
The invention has the benefit that
(1) coupling is carried out in no any discrete element (such as chip inductor, capacitor etc.) of addition to inhibit and circuit
Match, and in the case where no addition excessive microstrip line, the present invention only passes through bending and increases monopole length, in ground plane
Middle position extends PEG structure, and opening grooving on ground plane both sides and open U-lag i.e. in PEG inside configuration realizes two ends
The microstrip antenna coupling of mouth inhibits and matches.
(2) structure of the invention changes antenna smaller, also, the medium substrate of the element microstrip monopole antenna practical accounts for
It is only 25mm × 35mm with area, and Electromagnetic Simulation is the results show that have coupling rejection well using structure of the invention.
Detailed description of the invention
Fig. 1 is that the compact element microstrip monopole subarray coupling with PEG structure inhibits antenna assumption diagram；
Fig. 2 is the element microstrip monopole antenna structure chart of the invention using PEG structure and short medium substrate；Fig. 2 (a)
For antenna face figure；Fig. 2 (b) is antenna back view；
Fig. 3 is the element microstrip monopole antenna HFSS analogous diagram in PEG structure of the embodiment of the present invention without U-lag；
Fig. 4 is the element microstrip monopole antenna HFSS analogous diagram in PEG structure of the embodiment of the present invention with U-lag；
Fig. 5 is band and the binary monopole microstrip array S parameter emulation without U-lag in PEG structure of the embodiment of the present invention
Comparison diagram.
Specific embodiment
The invention will be further described below.Following embodiment is only used for clearly illustrating technical side of the invention
Case, and not intended to limit the protection scope of the present invention.
For the present invention using center operating frequency 6GHz as embodiment, the binary for devising a comprehensive decoupling and matching network is micro-
Band monopole antenna, and antenna size is optimized, PCB construction front and back sides design plane layout is as shown in Fig. 2, binary
Microstrip-monopole sub-antenna microstrip line parameter is referring to table 1.It, should in order to reduce the area occupied of element microstrip monopole antenna dielectric-slab
Antenna uses metallic copper as short medium substrate, and the use of short medium substrate will make the coupling bandwidth of antenna narrow, therefore
By two monopole antennas in antenna face (see Fig. 2 (a)) on short medium substrate first to 90 degree of center curvature, bending length is
4.9mm, then be bent upwards, the isosceles right triangle of a right-angle side 2.5mm is finally respectively cut in two crooked positions,
To guarantee that element microstrip monopole antenna obtains longer antenna length to realize broader coupling bandwidth；And at the antenna back side
The middle position of ground plane extends up out a part and forms PEG structure in (see Fig. 2 (b)), to realize coupling inhibiting effect；
In addition, outputing two groovings again in the left and right edges of ground plane, the effect of the two groovings is the effective electricity for increasing ground
Length, to achieve the purpose that increase matching and decoupling bandwidth；Finally, in order to keep biggish coupling bandwidth, and can obtain compared with
A U-lag is outputed in good far field radiation pattern, consideration again in the antenna back side in the PEG structure of ground plane, with extension
Coupling inhibits bandwidth, enhancing coupling depression effect.
1 element microstrip monopole antenna microstrip line parameter of table
| Parameter | Numerical value/mm | Parameter | Numerical value/mm | Parameter | Numerical value/mm |
| L1 | 25 | L2 | 15 | L3 | 11.5 |
| L4 | 9 | L5 | 3 | ||
| W1 | 35 | W2 | 1.6 | W3 | 4 |
| W4 | 10.4 | W5 | 1 | W6 | 0.3 |
| W7 | 3 | W8 | 6.25 |
U-lag changes original current direction, makes it that can only get around U-lag flowing, the flow direction of electric current is compared to before
It is not only more bent, also greatly increases length, effect is equivalent to addition cascade inductance in antennas；Since the U-lag opened is wide
Degree is very narrow, can be regarded as the magnetic wall on the patch that a width is zero.In order to obtain broader decoupling bandwidth, antenna is being set
After meter, modification and adjustment appropriate are carried out to the size of U-lag, position and width.Another for opening U-lag in PEG structure is excellent
Gesture is, can be by increasing the length of electric current to increase electrical length, to reach the target for reducing the centre frequency of antenna.
That is, if PCB antenna size is limited by space, in order to reduce resonance frequency, so that it may which preferential select opens U-lag technology.Due to
This method is not take up any exceptional space, only carries out excavating operation on original structure, therefore be highly suitable for miniature circuit
Design.
The coupling inhibiting effect for now verifying U-type groove in PEG structure designs a using short medium substrate and flat in ground connection
Face middle position expands the PEG structure of no U-type groove and outputs the element microstrip of two groovings in ground plane left and right edges
Monopole antenna, using as reference contrast design, it is as shown in Figure 3 that HFSS software PCB is laid out effect picture.Then, then in pcb board
The internal edge of back-side ground plane PEG outputs a U-lag, to enhance the suppression of the coupling between binary monopole array antenna
System；In specific simulation process, the dimensional parameters and fine tuning other each size knots of antenna of U-type groove in optimization PEG structure can be passed through
Structure, to obtain required antenna-reflected performance parameter (i.e. S parameter).
In the antenna modeling process of HFSS emulation, will simulation radiation boundary to 1/4 antenna operating wavelength is arranged between antenna
(λ=c/f, c=3.0 × 10 (λ)8M/s, f=6 × 109Hz) buffer area, wherein the medium substrate of antenna in the embodiment of the present invention
Material is set as Rogers 430, which is 3.66, and dielectric loss tangent is δ=0.004 tan, media plate thickness
For 0.762mm, the microstrip line metal thickness adhered on dielectric-slab is 0.018mm, and the width of antenna a1 and a2 are set as 0.032 λ,
Antenna length is set as 0.45 λ, and antenna spacing is set as 0.208 λ (this illustrates that the electromagnetic coupling effect between antenna is very strong), finally
It is as shown in Figure 4 to obtain the PCB layout effect picture for emulate with U-lag antenna S parameter with HFSS electromagnetic analysis software.
The S parameter result obtained after being emulated to band with the element microstrip monopole array antenna without U-shaped groove structure
Numerical value comparison is carried out after being fitted together by Matlab software, result is as shown in Figure 5.From the S parameter simulation result of Fig. 5
Figure is it can be seen that its coupling bandwidth of the antenna with U-shaped groove structure of HFSS emulation still keeps wider range: self-reflection coefficient S11
The bandwidth range of < -10dB is 5.2GHz to 6.3GHz；Coupling between antenna also further decreases, the band U in centre frequency 6GHz
The mutual reflection coefficient S of shape slot antenna21For -27.1dB, compared to the antenna of no U-shaped groove structure, coupling that is, mutual reflection coefficient drop
Low 5dB, and the S with U-shaped groove structure21The bandwidth range of < -20dB is also far longer than the corresponding bandwidth of no U-shaped groove structure,
To demonstrate " U-lag " structure there is extension coupling to inhibit bandwidth, enhancing coupling depression effect effect.In addition, being imitated from emulation
From the point of view of fruit, due to having outputed U-lag in PEG structure, though centre frequency produces certain offset, whole matching bandwidth is still
It is so relatively good, reach coupling and inhibited matched requirement, meets engineering design demand.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of element microstrip monopole antenna based on PEG structure, which is characterized in that
The element microstrip monopole antenna uses short medium substrate；
Two monopole antennas in the antenna face on short medium substrate are warp architecture；
The middle position of the antenna back-side ground plane extends up to form PEG structure；U-lag is opened up in the PEG structure；
A grooving is respectively opened up in the left and right edges of the ground plane.
2. a kind of element microstrip monopole antenna based on PEG structure according to claim 1, which is characterized in that described
Element microstrip monopole antenna is using metallic copper as short medium substrate.
3. a kind of element microstrip monopole antenna based on PEG structure according to claim 1, which is characterized in that described
The size of short medium substrate is 25mm × 35mm.
4. a kind of element microstrip monopole antenna based on PEG structure according to claim 1, which is characterized in that described
The generation type of warp architecture are as follows: two monopole antennas are first to 90 degree of center curvature, bending length 4.9mm, then Xiang Shangjin
Row bending finally cuts the isosceles right triangle that a right-angle side is 2.5mm in crooked position.
5. a kind of element microstrip monopole antenna based on PEG structure according to claim 1, which is characterized in that the U
Size, position and the width of shape slot emulate adjustment by HFSS according to required antenna-reflected performance parameter and determine.
6. a kind of element microstrip monopole antenna based on PEG structure according to claim 1, which is characterized in that described
The width of two monopole antennas is set as 0.032 operation wavelength, and monopole antenna length is set as 0.45 operation wavelength, and two
Monopole antenna spacing is set as 0.208 operation wavelength.
7. a kind of element microstrip monopole antenna based on PEG structure according to claim 1, which is characterized in that described
The size of grooving emulates adjustment by HFSS according to required antenna-reflected performance parameter and determines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753890.6A CN110459869A (en) | 2019-08-15 | 2019-08-15 | A kind of element microstrip monopole antenna based on PEG structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753890.6A CN110459869A (en) | 2019-08-15 | 2019-08-15 | A kind of element microstrip monopole antenna based on PEG structure |
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| Publication Number | Publication Date |
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| CN110459869A true CN110459869A (en) | 2019-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910753890.6A Pending CN110459869A (en) | 2019-08-15 | 2019-08-15 | A kind of element microstrip monopole antenna based on PEG structure |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157973A (en) * | 2014-08-28 | 2014-11-19 | 重庆大学 | Double-frequency printed monopole antenna array with low coupling |
| CN205029016U (en) * | 2015-10-14 | 2016-02-10 | 中兴通讯股份有限公司 | Multiple -input multiple -output antenna and electronic equipment |
-
2019
- 2019-08-15 CN CN201910753890.6A patent/CN110459869A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157973A (en) * | 2014-08-28 | 2014-11-19 | 重庆大学 | Double-frequency printed monopole antenna array with low coupling |
| CN205029016U (en) * | 2015-10-14 | 2016-02-10 | 中兴通讯股份有限公司 | Multiple -input multiple -output antenna and electronic equipment |
Non-Patent Citations (1)
| Title |
|---|
| KUN WANG等: "Compact Two-Element Printed Monopole Array With Partially Extended Ground Plane", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》 * |
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Application publication date: 20191115 |
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