CN107978855A - Wideband monopole microstrip antenna - Google Patents
Wideband monopole microstrip antenna Download PDFInfo
- Publication number
- CN107978855A CN107978855A CN201711075428.2A CN201711075428A CN107978855A CN 107978855 A CN107978855 A CN 107978855A CN 201711075428 A CN201711075428 A CN 201711075428A CN 107978855 A CN107978855 A CN 107978855A
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- CN
- China
- Prior art keywords
- radiation patch
- microstrip antenna
- arc notch
- antenna according
- plate
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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
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- 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
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/40—Element having extended radiating surface
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- Waveguide Aerials (AREA)
Abstract
The present invention provides a kind of wideband monopole microstrip antenna, mainly solves the problems, such as that traditional monopole antenna frequency band is narrow and three-dimensional structure is complicated.It includes dielectric substrate (1), feeder line (2), radiation patch (3), high-frequency joint (4) and earth plate (5).Radiation patch (3) uses major axis in the elliptical shape of vertical direction, the front end of the radiation patch is equipped with impedance matching and adjusts section (6), earth plate (5) is by two orthogonal rectangular metal plates (51,52) form, the center position of two rectangle region relative edges is carved with arc notch (7) and (8) respectively, radiation patch (3) upright projection on dielectric substrate bottom surface is located at the front of arc notch (8), and covers arc notch (7).The present invention can cover two wave bands of S and C, its working band scope is 1.62GHz 8.28GHz, can be used as wideband wireless communication, detection or monitor the microwave radiation of system and receive front end antenna.
Description
Technical field
The invention belongs to antenna technical field, particularly a kind of broad frequency micro-band unipole antenna, it can be used as broadband wireless and lead to
Letter, detection or monitoring system.
Background technology
At present, as what the development of wireless communication, the increase of required transmitted data amount and message transmission rate improved wants
Ask and increasingly show especially, wireless telecom equipment constantly develops to front end, and requirement of its equipment for broadband also increasingly increases so that super
Broadband UWB is applied extensively to be paid attention in microwave system design.Simultaneously as a large amount of frequency ranges are used for different purposes, therefore make
Obtaining space electromagnetic environment becomes extremely complex, therefore space electromagnetic environment is detected and is monitored in broad frequency range and has been become
It is very necessary.According to definition of the FCC FCC for ultra wide band UWB, absolute bandwidth is more than 500MHz or opposite
Equipment of the bandwidth more than 20% on -10dB can meet the requirement of this definition standard.In business correspondence, frequency range tool is commonly used
Body includes：GSM, WLAN and WiMAX three classes.The frequency range that wherein GSM is used for：1.710GHz-1.755GHz/1.805GHz-
1.850GHz；The frequency range that WLAN is used for：2.4GHz-2.484GHz, 5.15GHz-5.35GHz and 5.725GHz-5.825GHz；
The frequency range that WiMAX is used for：2.5GHz-2.69GHz, 3.4GHz-3.69GHz and 5.25GHz-5.85GHz.In order to meet to apply
Need, various antenna front ends are studied.But general traditional monopole antenna structure, the single mode of resonance design used due to it
Or multi-layer three-dimension stereochemical structure, such as inverted L shape, reversed F-typed structure type so that there are a major defect for the radiation characteristic of antenna
Either whole frequency ranges cannot be covered by being that, or three-dimensional structure is excessively complicated.To solve the above-mentioned problems, used alternative
In scheme, micro-strip planar structure, easy to be integrated in systems with carrier platform, is easy to batch machining, life since its volume is light
Production.But existing microstrip antenna structure, due to the constraint of its own design form and frequency characteristic, still remaining it cannot be effective
Meet to apply the requirement in broadband or ultra wide band.
The content of the invention
The mesh of the present invention is in view of the above shortcomings of the prior art, a kind of wideband monopole microstrip antenna to be proposed, to carry
The operating frequency range of high antenna, simplifies antenna structure, meets that the broadband properties that two frequency ranges of S and C are covered in practical application will
Ask.
To achieve the above object, microstrip antenna provided by the invention includes：Dielectric substrate, feeder line, radiation patch, high frequency connect
Head, earth plate and impedance matching adjust section, it is characterised in that radiation patch is using major axis in the elliptical shape of vertical direction, impedance
Matching adjusts the front end that section is arranged on radiation patch, and earth plate is made of two orthogonal rectangular metal plates, two squares
Arc notch is carved with respectively on shape metallic plate.
Preferably, the radiation patch is the oval radiator of a major axis vertically.
Preferably, the arc notch is respectively positioned at two sides of vertical earth plate and horizontal grounding plate centre face
Center position.
Preferably, upright projection of the radiation patch on dielectric substrate bottom surface is located at horizontal grounding plate arc notch
Front, and cover vertical earth plate arc notch.
Preferably, it is rectangle that the impedance matching, which adjusts section, the front end of upper surface radiation patch is placed in.
Preferably, the operating frequency range is 1.62GHz-8.28GHz, two wave bands of S and C can be covered.
The advantage of the invention is that：
1) it is of the invention since radiation patch uses major axis in the elliptical shape of vertical direction, the tool compared with circular or other figures
There is more freedom, and different directions, various sizes of resonant excitation mode can be formed in broadband, so as to be conducive to broadband
The realization of excitation.
2) present invention adjusts section due to being provided with impedance matching at one in the front end of radiation patch, is conducive to meet that antenna is set
During meter and after processing the appropriate adjusting requirement carried out is needed because the factors such as mismachining tolerance cause impedance operator to change.
3) present invention is due to using two orthogonal rectangular metal plate composition earth plates so that upper and lower surface is having
The electromagnetism weak coupling form for being advantageously implemented broadband character is formd while having good feed, and using two earth plates not
Broadband grounding characteristics are realized with the superposition improvement of frequency range grounding characteristics.
4) present invention due on the positive opposite side of above-mentioned two pieces of earth plates center position etch two arc notch knots respectively
Structure so that electromagnetic wave is formed by way of earth plate and coupled in arc notch region at two under the excitation of elliptic radiation patch, by this
With ground structure, not only each serve as matching adjustment effect to the different frequency range of elliptic radiation patch wide-band excitation, and to it is high,
Low-frequency range both ends form Electromagnetic Coupling Characteristic and play improvement frequency characteristic respectively, so that broadening bandwidth.
The antenna structure is not only simple in form in geometry, but also can be operated in the width of 1.62GHz-8.28GHz
Frequency band, the frequency band are more than 5 frequencys multiplication, have good frequency characteristic.
Brief description of the drawings
Fig. 1 is the antenna face structure diagram of the present invention；
Fig. 2 is the antenna structure schematic diagram of the present invention；
Fig. 3 is the antenna side structure schematic view of the present invention；
Fig. 4 is antenna standing wave-frequency characteristic curve diagram of the present invention.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
With reference to Fig. 1, Fig. 2 and Fig. 3, the present invention includes dielectric substrate 1, radiation patch 3, high-frequency joint 4 and earth plate 5.Should
Radiation patch 3 is etched in the front of dielectric substrate 1, its shape is ellipse of the major axis in vertical direction, and elliptical axis ratio is 0.85,
And central symmetry, and be connected by microstrip feed line 2 with the center conductor of high-frequency joint 4, the front end of radiation patch 3 is etched with impedance
Adjust section 6.Earth plate 5 is etched at the back side of dielectric substrate 1, and the earth plate 5 is by upper and lower two orthogonal rectangular metals 51
With 52 compositions, in the center position of the two rectangle regions relative edge, arc notch 7 and 8, wherein arc notch 7 are carved with respectively
Positioned at the center of the lower edge L1 of vertical earth plate 51, its depth D1 is the 1/9.50 of the vertical earth plate height H1, its
Width W1 is the 1/2.89 of the vertical earth plate width L1；Arc notch 8 is located at the center of the upper edge L2 of horizontal grounding plate 52
Position, its depth D2 are the 1/9.00 of horizontal grounding plate height H2, its width W2 is the 1/2.02 of horizontal grounding plate width L2.
The ellipse of the upright projection on dielectric substrate bottom surface of radiation patch 3 is located at the front of arc notch 8, and covers arc notch 7, high
The outer conductor of frequency connector 4 is grounded in lower end and the welding of earth plate 52.
The radiation patch 3 of this example uses elliptic design, i.e., on the basis of original circular design, radiation patch is set
Ellipse is calculated as, it is as follows with circular corresponding schematic relationships：
Wherein：X and y represents two mutually orthogonal geometry dimensions respectively, and R represents radius of circle, and a represents axis ratio.
The radiation patch 3 can be formed on oval y directions than circular more radiation modes in different frequency, and then
To the radiation characteristic with wider working band.
The positive opposite side L2 of positive the opposite side L1 and horizontal grounding plate 52 of vertical earth plate 51 are located at radiation patch in bottom surface of antenna
Lower section, due to the antenna, axisymmetricly structure, the impedance operator that the center on this two sides feeds antenna influence to dash forward
Go out, by etching arc notch 7 on L1 and arc notch 8 being etched on L2, the gradual change feature presented using its structure, is led to
Cross and adjust the geometric parameters of the two arc notch 7 and 8 to obtain preferable broadband Feedback current.
For the ease of the debugging after designing and processing, the impedance operator of rectangle is set to adjust section in 3 front ends of radiation patch
6, by adjusting set a distance between radiation patch 3 and adjusting section 6, realize the fine setting to impedance.
The production process of this antenna is as follows：
It is 0.8mm to select a monoblock thickness, and dielectric constant is 4.4 FR4 rectangular dielectric substrates, its upper and lower faces is distinguished
Covering has high conductivity metal layer, such as layers of copper.Microstrip feed line 2, oval 3 and of radiation patch are etched upper surface is bottom-up
Impedance matching adjusts section 6；Go out two pieces of orthogonal ground plate areas 51 and 52 in the back-etching of dielectric substrate 1 again；Hanging down
The lower edge on direct floor 51 etches arc notch 7 again, and etches arc notch again in the upper edge of horizontal grounding plate 52
8.The antenna structure front end ellipsoidal structure part is spoke side, is connected by feeding line portion with rear end microwave system.Feeder line end
Mouth is matched according to 50 ohm of general standards.
Since the Antenna Operation is in broadband range, the preferred plan for realizing the present invention is with two-sided high conductivity gold
The general high frequency laminate for belonging to coating is material, the high-precision lithographic technique in being manufactured using circuit instrument and equipment, such as photoetching skill
Technology is covered on art, high conductivity metal surface, and such as plating, spray technique and infrastructure device make, and work in-process should be kept
Degree of precision.
The design layout structure of the present invention can directly be charted by CAD software or professional electromagnetic simulation software export CAD
The mode of model is processed to make a plate and be used for.
Standing wave-frequency characteristic of inventive antenna is as shown in figure 4, the antenna can be effectively operated in as can be seen from Figure 4
In the broadband of 1.62GHz-8.28GHz, and standing-wave ratio is less than 2, meets that the general of broadband wireless communications, detection or monitoring will
Ask.
Above description is only example of the present invention, does not form any limitation of the invention, it is clear that for
, all may be without departing substantially from the principle of the invention, structure after present invention and principle has been understood for one of skill in the art
In the case of, progress form and the various modifications in details and change, but these modifications and variations based on inventive concept
Still within the claims of the present invention.
Claims (9)
1. a kind of wideband monopole microstrip antenna, including dielectric substrate (1), feeder line (2), radiation patch (3), high-frequency joint (4),
Earth plate (5) and impedance matching adjust section (6), it is characterised in that radiation patch (3) uses major axis in the ellipse of vertical direction
Shape, impedance matching adjust the front end that section (6) is arranged on radiation patch (3), and earth plate (5) is by two orthogonal rectangular metals
Plate (51,52) forms, and arc notch (7) and (8) are carved with respectively in two rectangular metal plates.
2. microstrip antenna according to claim 1, it is characterised in that radiation patch (3) for a major axis vertically
Oval radiator.
3. microstrip antenna according to claim 2, it is characterised in that the axis ratio of oval radiator is 0.85, and center pair
Claim.
4. microstrip antenna according to claim 1, it is characterised in that arc notch (7) and (8) are respectively positioned at vertical ground connection
The center position on two sides of face among plate (51) and horizontal grounding plate (52).
5. microstrip antenna according to claim 4, it is characterised in that it is following that arc notch (7) is located at vertical earth plate (51)
Along the center of L1, its depth D1 is the 1/9.50 of the vertical earth plate height H1, its width W1 is that the vertical earth plate is wide
Spend the 1/2.89 of L1.
6. microstrip antenna according to claim 4, it is characterised in that arc notch (8) is located at horizontal grounding plate (52) top
Along the center of L2, its depth D2 is the 1/9.00 of horizontal grounding plate height H2, its width W2 is horizontal grounding plate width
The 1/2.02 of L2.
7. microstrip antenna according to claim 1, it is characterised in that radiation patch (3) hanging down on dielectric substrate bottom surface
The front that shadow is located at arc notch (8) is delivered directly, and covers arc notch (7).
8. microstrip antenna according to claim 1, it is characterised in that it is rectangle that impedance matching, which adjusts section (6), is placed in
The front end of surface emissivity patch (3).
9. microstrip antenna according to claim 1, it is characterised in that operating frequency range 1.62GHz-8.28GHz, energy
Enough cover two wave bands of S and C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711075428.2A CN107978855B (en) | 2017-11-06 | 2017-11-06 | Wideband monopole microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711075428.2A CN107978855B (en) | 2017-11-06 | 2017-11-06 | Wideband monopole microstrip antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107978855A true CN107978855A (en) | 2018-05-01 |
| CN107978855B CN107978855B (en) | 2019-10-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711075428.2A Active CN107978855B (en) | 2017-11-06 | 2017-11-06 | Wideband monopole microstrip antenna |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100962930B1 (en) * | 2008-09-01 | 2010-06-10 | 강원대학교산학협력단 | Ultra-wide-band antenna having quarter-slot and method for manufacturing the same |
| CN204809390U (en) * | 2015-06-23 | 2015-11-25 | 中国计量学院 | Oval microstrip antenna of breach |
| CN205069864U (en) * | 2015-10-27 | 2016-03-02 | 南开大学 | Three frequency microstrip antenna based on defect ground structure frame is irregular oval cyclic annular |
| CN205231238U (en) * | 2015-12-15 | 2016-05-11 | 深圳市金溢科技股份有限公司 | Vehicle positioning system and basic station unit |
| CN205248439U (en) * | 2015-11-20 | 2016-05-18 | 吉林医药学院 | Two ring shape plane monopole antenna of ultra wide band |
| CN106252859A (en) * | 2016-08-27 | 2016-12-21 | 河北工业大学 | A kind of body surface communication antenna of flexible substrates |
-
2017
- 2017-11-06 CN CN201711075428.2A patent/CN107978855B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100962930B1 (en) * | 2008-09-01 | 2010-06-10 | 강원대학교산학협력단 | Ultra-wide-band antenna having quarter-slot and method for manufacturing the same |
| CN204809390U (en) * | 2015-06-23 | 2015-11-25 | 中国计量学院 | Oval microstrip antenna of breach |
| CN205069864U (en) * | 2015-10-27 | 2016-03-02 | 南开大学 | Three frequency microstrip antenna based on defect ground structure frame is irregular oval cyclic annular |
| CN205248439U (en) * | 2015-11-20 | 2016-05-18 | 吉林医药学院 | Two ring shape plane monopole antenna of ultra wide band |
| CN205231238U (en) * | 2015-12-15 | 2016-05-11 | 深圳市金溢科技股份有限公司 | Vehicle positioning system and basic station unit |
| CN106252859A (en) * | 2016-08-27 | 2016-12-21 | 河北工业大学 | A kind of body surface communication antenna of flexible substrates |
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| Publication number | Publication date |
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| CN107978855B (en) | 2019-10-11 |
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