CN109980347A - A kind of monopole microstrip antenna of coplanar wave guide feedback - Google Patents
A kind of monopole microstrip antenna of coplanar wave guide feedback Download PDFInfo
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- CN109980347A CN109980347A CN201910321738.0A CN201910321738A CN109980347A CN 109980347 A CN109980347 A CN 109980347A CN 201910321738 A CN201910321738 A CN 201910321738A CN 109980347 A CN109980347 A CN 109980347A
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- minor matters
- vertical
- wave guide
- coplanar wave
- microstrip antenna
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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
- H01Q1/50—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
Abstract
The present invention relates to a kind of monopole microstrip antennas of coplanar wave guide feedback, including feed section, the feed section uses coplanar wave guide feedback, the co-planar waveguide includes medium substrate and feed line, the medium substrate center is equipped with transmission conduction band unit, the transmission conduction band unit both sides are equipped with ground connection plate unit, radiating element is posted on the medium substrate, the radiating element is rectangle frame, 1/4 annulus unit is loaded on first interior angle of the rectangle frame, rectangular ring element is loaded on second interior angle, 1/4 circular cell is loaded on third interior angle and the 4th interior angle, one in 1/4 circular cell of two of them is connected with resonance minor matters；The feed line is located at the indentation, there on rectangle frame bottom edge, and is connected with quasi- L-type unit.The present invention breaches the disadvantages of frequency band is relatively narrow, gain is lower, extends micro-strip paster antenna and applies the range in the frequency range.
Description
Technical field
The present invention relates to microstrip antenna technical fields, more particularly to a kind of monopole microstrip antenna of coplanar wave guide feedback.
Background technique
The great development period of antenna can be counted from late 1950s, with the continuous expansion in wireless communications application field
The increasingly improvement of exhibition and integrated circuit, people are to antenna it is also proposed that carrying out various requirements, such as high-gain/wideband in performance
Simple/small size/light weight, technologic planarization easily manufacture on band/multiband, structure etc..Traditional antenna is because of element structure
At fixation, concealment is poor with anti-interference, the application in the not high certain fields of slowly having faded out of integrated level, to meet wireless communication
Demand, people begin one's study high-quality antenna.With the rapid development of Information technology, antenna is also with Modern Communication System or detection
System develops to miniaturization, multifrequency, high-performance, broadband and highly integrated direction.Microstrip antenna is as a kind of novel day
Line, by the fervent concern of domestic and international researcher due to particular advantages, such as small in size, low section, it is light-weight, be easy to plus
The features such as work is integrated, easily conformal.Currently, with the intensification of microstrip antenna theoretical research and the extension of application, microstrip antenna technology
At extensive infiltration in a large amount of wireless communication systems such as space technology, medicine, mobile communication, telemetering, satellite, and numerous
It is studied in subject.
Scholar to the research of microstrip antenna and continuously improves in recent decades, brings numerous sides to the design of microstrip antenna
Method, such as multiband technology is frequently with layered manner, racemosus section method (L-type minor matters, F type minor matters, G type minor matters), fluting method；Broadband
Technical method has: load parasitic patch method, more gap methods, grounding probe method etc., these technologies can effectively realize the small of antenna
Type, broadband, more spellingizations, high-gain index, to improve the communication quality of system and meet the needs of practical application.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of monopole microstrip antennas of coplanar wave guide feedback, breach frequency
With the disadvantages of relatively narrow, gain is lower, extends micro-strip paster antenna and apply the range in the frequency range.
The technical solution adopted by the present invention to solve the technical problems is: providing a kind of monopole microstrip of coplanar wave guide feedback
Antenna, including feed section, the feed section use coplanar wave guide feedback, and the co-planar waveguide includes medium substrate and feed
Line, the medium substrate center are equipped with transmission conduction band unit, and the transmission conduction band unit both sides are equipped with ground connection plate unit, are given an account of
Radiating element is posted on matter substrate, the radiating element is rectangle frame, and 1/4 circle is loaded on first interior angle of the rectangle frame
Ring element is loaded with rectangular ring element on the second interior angle, and it is round single that 1/4 is loaded on third interior angle and the 4th interior angle
Member, one in 1/4 circular cell of two of them is connected with resonance minor matters；The feed line is located at the notch on rectangle frame bottom edge
Place, and be connected with quasi- L-type unit.
The resonance minor matters include horizontal minor matters, the first vertical minor matters, the second vertical minor matters and the vertical minor matters of third, described
One end of first vertical minor matters is connected with one in described two 1/4 circular cells, one end phase of the other end and horizontal minor matters
Even, the other end of horizontal minor matters is connected with one end of the second vertical minor matters, and the other end of the second vertical minor matters is located at horizontal minor matters
Lower section；Also it is connected with one end of the vertical minor matters of third in the horizontal minor matters, the other end of the vertical minor matters of third is located at horizontal branch
The top of section；The distance of the vertical minor matters of third to the first vertical minor matters is less than the distance to the second vertical minor matters.
The quasi- L-type unit includes vertical rectangle part, horizontal rectangular part and semi-circular portions, and the feed line is connected to
The middle position of horizontal rectangular part, the side of the horizontal rectangular part are connected with vertical rectangle part, the vertical rectangle
Partial top is connected with semi-circular portions.
The width on two sides is 7mm above and below the rectangle frame, and the width on two sides in left and right is 6mm.
The inner circle radius of the 1/4 annulus unit is 6mm, width 3mm.
The inner edge a length of 5mm, width 3mm of the rectangular ring element.
The radius of 1/4 circular cell is 12mm.
The length of the first vertical minor matters is 18mm, and the length of the second vertical minor matters is 11mm, the vertical minor matters of third
Length is 4mm, and the length of horizontal minor matters is 25mm；The horizontal minor matters, the first vertical minor matters, the second vertical minor matters and third are perpendicular
Straight minor matters width is 3mm.
The length of the horizontal rectangular part is 16.5mm, width 5.2mm；The length of the vertical rectangle part is
13.8mm, width 9.5mm；The radius of the semi-circular portions is 4.75mm.
Gap between the feed line and rectangle frame is 0.5mm, and the length of the feed line is 7.5mm, and width is
3.2mm。
Beneficial effect
Due to the adoption of the above technical solution, compared with prior art, the present invention having the following advantages that and actively imitating
Fruit:
Antenna major advantage of the invention are as follows: first, this antenna realizes miniaturization and width using coplanar wave guide feedback
Band requirement, for antenna medium having a size of 54mm × 54mm, frequency bandwidth range achieved is 1.8-4.8GHz；Second, antenna
Bandwidth, and voltage standing wave ratio VSVR and return loss band are extended by racemosus section Loading Method etc. on the basis of Q-RING patch
It is wide consistent；Third, entire antenna structure is very simple, is readily integrated into various communications applications systems.
Detailed description of the invention
Fig. 1 is overall structure figure of the invention；
Fig. 2 is return loss schematic diagram of the invention；
Fig. 3 is voltage standing wave ratio schematic diagram of the invention；
Fig. 4 is gain parameter schematic diagram of the invention.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiments of the present invention are related to a kind of monopole microstrip antenna of coplanar wave guide feedback, as shown in Figure 1, including feed
Part, the feed section use coplanar wave guide feedback, and the co-planar waveguide includes medium substrate and feed line, the medium base
Plate center is equipped with transmission conduction band unit, and the transmission conduction band unit both sides are equipped with ground connection plate unit, and the medium substrate back side is without gold
Possession plate.Post radiating element on the medium substrate, the radiating element is rectangle frame 1, in first of the rectangle frame 1
It is loaded with 1/4 annulus unit 2 on angle, is loaded with rectangular ring element 3 on the second interior angle, on third interior angle and the 4th interior angle
It is loaded with 1/4 circular cell 4, one in 1/4 circular cell 4 of two of them is connected with resonance minor matters；The feed line 6 is located at
The indentation, there on 1 bottom edge of rectangle frame, and be connected with quasi- L-type unit.
Wherein, the resonance minor matters include that horizontal minor matters 51, the first vertical minor matters 52, the second vertical minor matters 53 and third are perpendicular
Straight minor matters 54, one end of the first vertical minor matters 52 are connected with one in described two 1/4 circular cells, the other end and water
One end of flat minor matters 51 is connected, and the other end of horizontal minor matters 51 is connected with one end of the second vertical minor matters 53, the second vertical minor matters
53 other end is located at horizontal 51 lower section of minor matters；Also it is connected with one end of the vertical minor matters 54 of third in the horizontal minor matters 51, the
The other end of three vertical minor matters 54 is located at the top of horizontal minor matters 51；The vertical minor matters 52 of the vertical minor matters 54 to the first of third
Distance is less than the distance to the second vertical minor matters 53.The load of resonance minor matters can change aerial radiation chip surface electric current to
The active path for extending electric current, extends bandwidth, and make voltage standing wave ratio VSVR consistent with return loss bandwidth.
The quasi- L-type unit includes vertical rectangle part 71, horizontal rectangular part 72 and semi-circular portions 73, the feed line
6 are connected to the middle position of horizontal rectangular part 72, and the side of the horizontal rectangular part 72 is connected with vertical rectangle part 71,
The top of the vertical rectangle part 71 is connected with semi-circular portions 73.It can be into one by loading quasi- L-type unit on feed line
Step increases the impedance bandwidth of antenna.
The antenna structure of present embodiment mainly includes dielectric layer, quasi- L-type unit, rectangular ring element, resonance minor matters, feed
Line, the Taconic TLT (tm) that these radiating elements are printed on a thickness of 1mm, having a size of 54mm × 54mm, opposite dielectric
Constant εrOn the medium substrate of δ=0.0006=2.25, loss tangent tan, and medium substrate lower surface does not have metal ground plate.
Size when Antenna Design calculates and can be analyzed and be calculated by symmetrical dipole from monopole microstrip antenna, usually works
In quarter-wave long pattern, the wavelength in corresponding free space wavelength and medium can be calculated by formula λ=c/f.It
The specific size parameter of line is as shown in table 1.
| Antenna size parameter | Parameter value (mm) | Antenna size parameter | Parameter value (mm) |
| G | 54 | a | 5 |
| L1 | 5.2 | W1 | 1.5 |
| L2 | 16.5 | W2 | 5.2 |
| L3 | 13.8 | W3 | 9.5 |
| L4 | 18 | W4 | 25 |
| L5 | 4 | W5 | 3 |
| L6 | 11 | W6 | 3 |
| L7 | 7 | W7 | 8.47 |
| b | 3 | W8 | 6 |
| R1 | 12 | R2 | 4.75 |
| R3 | 6 | g | 0.5 |
| Wf | 3.2 | h | 1 |
1 antenna parameter table of table
Since antenna works in free space, in order to make to design Antenna Operation parameter closer to reality, in antenna
After the completion of structural model creation, when analyzing antenna performance parameters using HFSS13.0, need to set the boundary condition of antenna to
Perfact conductor boundary, radiation border surface (i.e. air Cavity surface) are needed apart from radiator not less than λ/4, antenna model medium substrate
Bottom surface need to be set as ideal boundary, the input port of antenna is set as waveguide port excitation, and microstrip feed line is made to be located at end
The center of mouth, sets rapid frequency-sweeping type for antenna, carries out analytical calculation to its performance in 1-5GHz frequency range.
Antenna of the invention realizes good performance indicator, and the return wave loss parameter (S11) of antenna is as shown in Fig. 2, be
91% (3GHz, 1.8-4.8GHz).Fig. 3 shows the case where aerial voltage standing-wave ratio changes with frequency, can from Fig. 3
Out, VSVR < 2dB in 1.8-4.8GHz frequency range, meets technical indicator.Fig. 4 is the gain situation of antenna, can from Fig. 4
For antenna in the frequency range, gain can reach 4.5dB all substantially in 2.7dB or more out.
In general, each characterisitic parameter of antenna is all the function of frequency, and antenna may have most in centre frequency
Good characteristic.Return loss S11 and gain G ain is two important parameters of antenna performance superiority and inferiority, wherein theory calls S11 <-
10dB and Gain > 2.5dB could illustrate that antenna has actual application value in same band.The frequency band of antenna of the invention
Range is 1.8-4.8GHz, and opposite bandwidth of operation is 91%, and the voltage standing wave ratio VSVR of antenna and return loss bandwidth are kept
Unanimously, show that the input resistant matching of antenna is good, gain extreme value is 4.5dB, and covers the frequency of bluetooth and WiMAX work
Section, to ensure that the antenna structure of design can be applied to work in the wireless communication system of this frequency range.The present invention fills
The small size of micro-strip paster antenna has been waved in distribution, low section and the features such as be easily integrated, and breaches that frequency band is relatively narrow, gain is more low
Disadvantage extends micro-strip paster antenna and applies the range in the frequency range.
Claims (10)
1. a kind of monopole microstrip antenna of coplanar wave guide feedback, including feed section, the feed section is presented using co-planar waveguide
Electricity, the co-planar waveguide include medium substrate and feed line, and the medium substrate center is equipped with transmission conduction band unit, the transmission
Conduction band unit both sides are equipped with ground connection plate unit, which is characterized in that radiating element, the radiating element are posted on the medium substrate
For rectangle frame, it is loaded with 1/4 annulus unit on first interior angle of the rectangle frame, is loaded with Q-RING list on the second interior angle
Be loaded with 1/4 circular cell on member, third interior angle and the 4th interior angle, one in 1/4 circular cell of two of them with
Resonance minor matters are connected；The feed line is located at the indentation, there on rectangle frame bottom edge, and is connected with quasi- L-type unit.
2. the monopole microstrip antenna of coplanar wave guide feedback according to claim 1, which is characterized in that the resonance minor matters packet
Include horizontal minor matters, the first vertical minor matters, the second vertical minor matters and the vertical minor matters of third, one end of the first vertical minor matters and institute
It states one in two 1/4 circular cells to be connected, the other end is connected with one end of horizontal minor matters, the other end of horizontal minor matters and the
One end of two vertical minor matters is connected, and the other end of the second vertical minor matters is located at below horizontal minor matters；In the horizontal minor matters also with
One end of the vertical minor matters of third is connected, and the other end of the vertical minor matters of third is located at the top of horizontal minor matters；The vertical branch of third
The distance to the first vertical minor matters is saved less than the distance to the second vertical minor matters.
3. the monopole microstrip antenna of coplanar wave guide feedback according to claim 1, which is characterized in that the quasi- L-type unit
Including vertical rectangle part, horizontal rectangular part and semi-circular portions, the feed line is connected to the interposition of horizontal rectangular part
It sets, the side of the horizontal rectangular part is connected with vertical rectangle part, and the top of the vertical rectangle part is connected with semicircle
Part.
4. the monopole microstrip antenna of coplanar wave guide feedback according to claim 1, which is characterized in that above and below the rectangle frame
The width on two sides is 7mm, and the width on two sides in left and right is 6mm.
5. the monopole microstrip antenna of coplanar wave guide feedback according to claim 1, which is characterized in that the 1/4 annulus list
The inner circle radius of member is 6mm, width 3mm.
6. the monopole microstrip antenna of coplanar wave guide feedback according to claim 1, which is characterized in that the rectangular ring element
Inner edge a length of 5mm, width 3mm.
7. the monopole microstrip antenna of coplanar wave guide feedback according to claim 1, which is characterized in that described 1/4 is round single
The radius of member is 12mm.
8. the monopole microstrip antenna of coplanar wave guide feedback according to claim 2, which is characterized in that the first vertical branch
The length of section is 18mm, and the length of the second vertical minor matters is 11mm, and the length of the vertical minor matters of third is 4mm, the length of horizontal minor matters
Degree is 25mm；The horizontal minor matters, the first vertical minor matters, the second vertical minor matters and the vertical minor matters width of third are 3mm.
9. the monopole microstrip antenna of coplanar wave guide feedback according to claim 3, which is characterized in that the horizontal rectangular portion
The length divided is 16.5mm, width 5.2mm；The length of the vertical rectangle part is 13.8mm, width 9.5mm；It is described
The radius of semi-circular portions is 4.75mm.
10. the monopole microstrip antenna of coplanar wave guide feedback according to claim 1, which is characterized in that the feed line with
Gap between rectangle frame is 0.5mm, and the length of the feed line is 7.5mm, width 3.2mm.
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| CN201910321738.0A CN109980347B (en) | 2019-04-22 | 2019-04-22 | Monopole microstrip antenna of coplanar waveguide feed |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112909526A (en) * | 2021-01-22 | 2021-06-04 | 宁波大学 | Dual-frequency point ultrahigh-frequency bandwidth tagged antenna |
| CN115441147A (en) * | 2020-05-29 | 2022-12-06 | 合肥本源量子计算科技有限责任公司 | Method for constructing coplanar waveguide resonator layout and method for constructing air bridge layer |
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| CN112909526A (en) * | 2021-01-22 | 2021-06-04 | 宁波大学 | Dual-frequency point ultrahigh-frequency bandwidth tagged antenna |
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