CN208423158U - A kind of feed layer structure using H-shaped gap - Google Patents
A kind of feed layer structure using H-shaped gap Download PDFInfo
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- CN208423158U CN208423158U CN201821355136.4U CN201821355136U CN208423158U CN 208423158 U CN208423158 U CN 208423158U CN 201821355136 U CN201821355136 U CN 201821355136U CN 208423158 U CN208423158 U CN 208423158U
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Abstract
The utility model discloses a kind of feed layer structures using H-shaped gap, including Wilkinson power splitter, it further include two orthogonal H-shaped gaps, Wilkinson power splitter feeds two orthogonal H-shaped gaps, and the length difference of two feeder lines of Wilkinson power splitter is λg/ 4, λgFor waveguide wavelength.The utility model devises a kind of feed layer structure using H-shaped gap, is fed by Wilkinson power splitter to two orthogonal H-shaped gaps, and energy to patch, has motivated that amplitude is equal, 90 ° of phase difference of TM by slot-coupled01Mould and TM10Mould, to obtain Broadband Circular Polarization Microstrip Antenna.Power splitter provides constant amplitude excitation, passes through the feed line length difference λ between portg/ 4 obtain 90 ° of phase difference.
Description
Technical field
The utility model relates to a kind of feed layer structures, and in particular to a kind of feed layer structure using H-shaped gap.
Background technique
Commonly used several antenna types mainly have stereo spiral antenna, four-arm spiral antenna and circle in satellite mobile communication
Polarization micro-strip antenna.
Document devises a kind of 4 × 4 axial mode helical antenna array applied to mobile satellite communication.The design uses
A kind of axial mode helical antenna of low profile is reduced as far as possible by reducing the methods of the screw pitch of antenna, load cross director
The height of helical antenna, and too much influence will not be brought to cross polarization and gain, so that gain is reached 16dBic or more, intersects
Polarization is below -40dB.
The prior art includes a kind of four-arm spiral antenna for mobile satellite communication.The spiral arm of antenna uses cone and becomes
Mode of the structure in conjunction with parasitic minor matters designs, and effectively improves the bandwidth of antenna.It devises a kind of for four arm spiral days
The feeding network of line, the network are preferably realized by simple and present from the improvement of network integration Wilkinson power divider principle
The differences such as the constant amplitude to four-arm spiral antenna spiral arm feed.By actual measurement, the gain of antenna reaches 4dB, and beam angle is
110 ° or so.
A kind of design for INMARSAT ground based terminal antenna array element, the design use single feed point circular polarisation bore coupling
The multi-layer microstrip antenna form of conjunction, using low price, the foamed plastics of low-k and medium substrate mixed structure, to reduce
Cost and the impedance bandwidth for widening antenna.Measurement result shows the impedance bandwidth (voltage standing wave ratio VSWR≤2) and entelechy of antenna
Change bandwidth (axis ratio AR≤3dB) and respectively reaches l8.8% and 12.3%.Meanwhile gain of the antenna in centre frequency 1593MHz reaches
To 9.4dBi.
A kind of duplex feeding circular polarization microstrip antenna cellular construction for maritime satellite communications, utilizes the coplanar double-fed of microstrip line
Electricity realizes circular polarisation, and makes antenna using microwave dielectric material plate, has reached 9% impedance bandwidth (VSWR≤2).Article does not have
There are the performance parameters such as the Circular polarization ratio for providing the antenna, in fact, the parasitic radiation of the power division network of coplanar feed will be certain
The directionality and axis ratio characteristic that antenna is influenced in degree, make circular polarisation degradation.
A kind of circular polarized antenna for the co-planar waveguide CPW of global positioning system and marisat system feed,
Tape and oblique L ground connection tape perturbation are grounded to realize circular polarization radiation by load T-type, in the case where T-type tape is fixed, are led to
Overregulate tuning and impedance matching that oblique L tape can be easily achieved frequency.The axis ratio of final test is less than 3dB circular polarisation band
It is wide to reach 11.1%, antenna gain 3dBi.But the slightly aobvious complexity of antenna structure, and the size of perturbation tape is to antenna entelechy
Changing performance has great influence, requires so as to cause antenna machining tolerance stringent.
Above-mentioned antenna has that volume is larger, feeding network is more complex, gain is lower, need to organize battle array, complex structure and other problems.
Utility model content
Technical problem to be solved in the utility model is that the antenna volume in existing satellite mobile communication is larger, transmission network
Network is more complex, gain is lower, need to organize battle array, structure is complicated, and it is an object of the present invention to provide a kind of feed layer structure using H-shaped gap, solution
Antenna volume in certainly existing satellite mobile communication is larger, feeding network is more complex, gain is lower, need to organize battle array, is complicated
Problem.
The utility model is achieved through the following technical solutions:
A kind of feed layer structure using H-shaped gap, including feed laminar substrate and the Wilkinson function being disposed on the substrate
Dividing device, further includes two orthogonal H-shaped gaps, Wilkinson power splitter feeds two orthogonal H-shaped gaps,
The length difference of two feeder lines of Wilkinson power splitter is λg/ 4, λgFor waveguide wavelength.The present invention devises a kind of using H-shaped seam
The feed layer structure of gap feeds two orthogonal H-shaped gaps by Wilkinson power splitter, and energy passes through slot-coupled
To patch, motivate that amplitude is equal, 90 ° of phase difference of TM01Mould and TM10Mould, to obtain Broadband Circular Polarization Microstrip Antenna.By
One Wilkinson power splitter provides constant amplitude excitation, passes through the feed line length difference λ between portg/ 4 obtain 90 ° of phase
Difference.
Two feeder lines are isolated using the pellet resistance of 100 Ω in Wilkinson power splitter.Ensure between two ports mutually every
From absorbing unbalanced reflected energy.
The characteristic impedance of two feeder lines is 50 Ω.
The H-shaped gap includes gap and a gap midpoint perpendicular to two parallel faces for two parallel faces
Gap.The length in three gaps is identical.Two H-shaped gaps do not have intersection point.
The utility model compared with prior art, has the following advantages and benefits:
1, a kind of feed layer structure using H-shaped gap of the utility model, solves that prior art size is larger, transmission network
The complex problem of network；
2, a kind of feed layer structure using H-shaped gap of the utility model, gain is higher compared with existing element antenna,
Small volume, structure are simple compared with array antenna.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application
Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings:
FIG. 1 is a schematic structural view of the utility model.
Label and corresponding parts title in attached drawing:
1- substrate, 2-Wilkinson power splitter, the gap 3-, 4- feeder line, 5- pellet resistance.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment 1
As shown in Figure 1, a kind of feed layer structure using H-shaped gap, including feed laminar substrate 1 and setting are on substrate 1
Wilkinson power splitter 2, further include two orthogonal H-shaped gaps 3, Wilkinson power splitter 2 stitches two orthogonal H-shaped
Gap 3 is fed, and the length difference of two feeder lines 4 of Wilkinson power splitter 2 is λg/ 4, λgFor waveguide wavelength.Present invention design
A kind of feed layer structure using H-shaped gap, by Wilkinson power splitter 2 feeds two orthogonal H-shaped gaps 3,
Energy is coupled to patch by gap 3, has motivated that amplitude is equal, 90 ° of phase difference of TM01Mould and TM10Mould, to obtain broadband
Circular polarization microstrip antenna.Constant amplitude excitation is provided by a Wilkinson power splitter 2, passes through 4 length difference of feeder line between port
λg/ 4 obtain 90 ° of phase difference.
Two feeder lines 4 are isolated using the pellet resistance 5 of 100 Ω in Wilkinson power splitter 2.
The characteristic impedance of two feeder lines 4 is 50 Ω.Ensure it is mutually isolated between two ports, absorb it is unbalanced
Reflected energy.
The gap 3 in the H-shaped gap 3 including two parallel faces in a gap 3 perpendicular to two parallel faces
The gap 3 of point.The length in three gaps 3 is identical.Two H-shaped gaps 3 do not have intersection point.
Embodiment 2
As shown in Figure 1, a kind of feed layer structure using H-shaped gap, including feed laminar substrate 1 and setting are on substrate 1
Wilkinson power splitter 2, further include two orthogonal H-shaped gaps 3, Wilkinson power splitter 2 stitches two orthogonal H-shaped
Gap 3 is fed, and the length difference of two feeder lines 4 of Wilkinson power splitter 2 is λg/ 4, λgFor waveguide wavelength.
The gap 3 in the H-shaped gap 3 including two parallel faces in a gap 3 perpendicular to two parallel faces
The gap 3 of point.The length in three gaps 3 is identical.Two H-shaped gaps 3 do not have intersection point.
Coordinate system is established as origin in center to feed laminar substrate 1, and three gaps 3 in one of H-shaped gap 3 are l1:
Y1=S, (- S/2 < x1 < S/2)；L2:y2=0, (- S/2 < x2 < S/2)；L3:x3=0, (0 < y3 < S)；Another H-shaped gap 3
Three gaps are l4:x4=S/2, (- S < y4 < 0)；L5:x5=-S/2, (- S < y5 < 0)；L6:y6=-S/2, (- S/2 < x6 < S/
2)。
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of feed layer structure using H-shaped gap, including feed laminar substrate and the Wilkinson function being disposed on the substrate point
Device, which is characterized in that further include two orthogonal H-shaped gaps, Wilkinson power splitter carries out two orthogonal H-shaped gaps
Feed, the length difference of two feeder lines of Wilkinson power splitter are λg/ 4, λgFor waveguide wavelength.
2. a kind of feed layer structure using H-shaped gap according to claim 1, which is characterized in that Wilkinson function point
Two feeder lines are isolated using the pellet resistance of 100 Ω in device.
3. a kind of feed layer structure using H-shaped gap according to claim 1, which is characterized in that two feeder lines
Characteristic impedance be 50 Ω.
4. a kind of feed layer structure using H-shaped gap according to claim 1, which is characterized in that the H-shaped gap packet
Include the gap of two parallel faces and the gap at a gap midpoint perpendicular to two parallel faces.
5. a kind of feed layer structure using H-shaped gap according to claim 4, which is characterized in that three gaps
Length it is identical.
6. a kind of feed layer structure using H-shaped gap according to claim 1, which is characterized in that two H-shaped seam
Gap does not have intersection point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821355136.4U CN208423158U (en) | 2018-08-21 | 2018-08-21 | A kind of feed layer structure using H-shaped gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821355136.4U CN208423158U (en) | 2018-08-21 | 2018-08-21 | A kind of feed layer structure using H-shaped gap |
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| Publication Number | Publication Date |
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| CN208423158U true CN208423158U (en) | 2019-01-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818155A (en) * | 2019-03-26 | 2019-05-28 | 东南大学 | A kind of double-circle polarization millimeter wave reflective array antenna that wave beam is individually controllable |
-
2018
- 2018-08-21 CN CN201821355136.4U patent/CN208423158U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818155A (en) * | 2019-03-26 | 2019-05-28 | 东南大学 | A kind of double-circle polarization millimeter wave reflective array antenna that wave beam is individually controllable |
| CN109818155B (en) * | 2019-03-26 | 2020-12-11 | 东南大学 | Dual-circular polarization millimeter wave reflective array antenna with independently controllable wave beams |
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