CN105633587B - A kind of circular polarisation Waveguide slot antenna and its design method - Google Patents
A kind of circular polarisation Waveguide slot antenna and its design method Download PDFInfo
- Publication number
- CN105633587B CN105633587B CN201610052970.5A CN201610052970A CN105633587B CN 105633587 B CN105633587 B CN 105633587B CN 201610052970 A CN201610052970 A CN 201610052970A CN 105633587 B CN105633587 B CN 105633587B
- Authority
- CN
- China
- Prior art keywords
- waveguide
- wave guide
- straight slot
- guide wall
- slot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/22—Longitudinal slot in boundary wall of waveguide or transmission line
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0037—Particular feeding systems linear waveguide fed arrays
- H01Q21/0043—Slotted waveguides
- H01Q21/005—Slotted waveguides arrays
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a kind of circular polarisation Waveguide slot antenna and its design methods.Circular polarisation Waveguide slot antenna includes the metallic waveguide for hollow metallic waveguide, and parallel two rows of backrest wave guide walls are being equipped with along the same side of metallic waveguide extending direction, with the backrest wave guide wall interval setting on row.A pair of lateral straight slot is offered on each backrest wave guide wall, each pair of transverse direction straight slot cuts the wave guide wall into backrest wave guide wall both sides.On the backrest wave guide wall of same row, opened up between two neighboring backrest wave guide wall there are one longitudinal straight slot, two rows of longitudinal direction straight slots deviate the center line of metallic waveguide.With longitudinal straight slot of the row above or between two rows setting is spaced with pairs of lateral straight slot.The center of two rows of longitudinal direction straight slots and the center of corresponding a pair of lateral straight slot are in metallic waveguide in " L " just as in a cross section.Design method of the present invention also for opening circular polarisation Waveguide slot antenna.
Description
Technical field
The present invention relates to a kind of antenna and its design method more particularly to a kind of circular polarisation Waveguide slot antenna and its designs
Method.
Background technology
In recent years, with the extensive use of satellite communication, the antenna system for receiving satellite broadcasting communication has obtained quickly
Development low profile, efficient antenna system are needed, such as direct broadcast satellite (DBS) communication system to improve system
(G is the gain of antenna system to G/T values；T is the noise temperature of antenna system), to increase the data transfer rate of antenna and satellite communication；
Also, the effective aperture of antenna is limited by antenna scanning volume, and for given scan volume, low profile antenna can obtain
Maximum system gain, to improve the G/T values of whole system.
Wave guide slot array antenna is widely applied since it is efficient, be easy to width phase control, processes the factors such as simple, especially
It is radar system.Wave guide slot array antenna has two kinds of traveling wave battle array and standing-wave array (resonance battle array), waveguide traveling wave battle array broader bandwidth to have frequency
Characteristic is swept, but its is less efficient, is suitble to do large planar array；Standing-wave array is efficient, narrower bandwidth, is suitble to do small-sized plane battle array
Row.
For the antenna system for receiving direct broadcasting satellite communication, it is typically mounted on aircraft or automobile top, therefore this
A little antenna systems all have good mobility, and the requirement hence for these antenna is also just relatively high, such as：It minimizes, is low
Profile, low-loss, high-gain etc..In order to reduce the height of antenna system, antenna is typically designed as planar array antenna, therefore wave
It leads slot array and has obtained good application.
In commercial satellite communication system, the signal of satellite reception and transmitting is all circularly polarised wave, no matter radar and is defended in this way
Star will not all cause cross polar component at what angle.That is satellite reception and transmitting circularly polarised wave, will not cause pole
The mismatch of change so as to cause the efficiency of data transmission reduction.
Open at existing rectangular waveguide broadside center the leaky-wave antenna and the low-loss low profile dual polarization waveguide moon in the gap " X " in the U.S.
The gap between teeth antenna array, but both circular polarized antennas are all waveguide travelling-wave aerials, and there are beam position dispersion, effects in operating bandwidth
The problems such as rate is low.
Existing ridge waveguide wide-edge transverse straight slot antenna (Zhang Hongtao, Wang Wei, Qi Meiqing, the patent No.
201110356616.9), (Wang Wei, Zhang Hongtao is neat U.S. clear etc., the patent No. for antenna of ridge waveguide inclined slot pairs：
200910184962.6), broadband dual L wave guide narrow edge gap antenna array (Wang Wei, Jin Jian etc., the patent No.：
And a kind of broadband single ridge waveguide broadside longitudinal seam standing-wave antenna (Jin Jian, Wang Wei etc., the patent No. 200720042499.8)：
200620169079.1) in, each antenna is ridge waveguide single line poliarizing antenna.
There are a kind of circular polarization waveguide standing-wave antenna (Zhang Hongtao, Wang Wei, the patent No. in the prior art：
200910185457.3) complex in structure, it comprises feed waveguide and open ended waveguide double-layer structure, antenna thickness compared with
Thickness, and circular polarisation narrower bandwidth.
There are a kind of circular polarized antenna (Wang Wei, Qi Meiqing, Zhang Hongtao etc., the patent No. in the prior art：
201310454644.3), it uses and opens up two kinds of radiating slots in single ridged waveguides：Inclined slot pair and longitudinal straight slot, to
Circular polarized antenna is formed, but this circular polarized antenna, due to being limited by real processing technology, this kind of circular polarized antenna is in milli
VHF band is difficult that processing is realized.Antenna structure in the prior art is complex and working efficiency is relatively low, cannot be satisfied day increasingly
The militarization requirement of exhibition.
Invention content
The present invention is intended to provide one kind having good broadband characteristics, and it is simple in structure, convenient for being individually composed large-scale plane
Battle array circular polarisation Waveguide slot antenna and its design method, to solve antenna structure in the prior art it is complex and work
It is less efficient, the problem of cannot be satisfied growing communication and radar system demand.
The present invention solution be：A kind of circular polarisation Waveguide slot antenna comprising metallic waveguide, metallic waveguide
Tube wall on offer several longitudinal straight slots and several longitudinal straight slots it is corresponding and be symmetrical inclined slot it is several at
To lateral straight slot；Several longitudinal direction straight slots are mutually parallel and along the extending direction settings for being parallel to metallic waveguide, several
Pairs of lateral straight slot is mutually parallel and is arranged along the extending direction perpendicular to metallic waveguide；Metallic waveguide is hollow gold
Belong to waveguide, and be equipped with parallel two rows of backrest wave guide walls along the same side of metallic waveguide extending direction, on row
Backrest wave guide wall interval setting；A pair of lateral straight slot, each pair of transverse direction straight slot cutting are offered on each backrest wave guide wall
Enter the wave guide wall of backrest wave guide wall both sides；On the backrest wave guide wall of same row, one is offered between two neighboring backrest wave guide wall
A longitudinal direction straight slot, two rows of longitudinal direction straight slots deviate the center line of metallic waveguide；With on row longitudinal straight slot with it is pairs of
Lateral straight slot interval is arranged, and longitudinal straight slot between two rows is also spaced setting with pairs of lateral straight slot；It is two rows of longitudinal
The center of straight slot and the center of corresponding a pair of lateral straight slot are in metallic waveguide in " L " just as in a cross section.
As being further improved for said program, also it is staggered, makes with backrest wave between two rows of backrest wave guide walls
The cross section of the position of guide wall, metallic waveguide is L-shaped.
Further, metallic waveguide meets the following conditions：
The width (a) of the bottom surface wave guide wall of metallic waveguide is less than 0.7 wavelength；
The width (b) of backrest wave guide wall is less than 0.35 wavelength；
The height (ah) of the bottom surface wave guide wall of metallic waveguide is less than 0.5 wavelength；
The height (bh) of backrest wave guide wall is 0.25 wavelength.
As being further improved for said program, one end of metallic waveguide is antenna input port, and the other end is set as sealing
It closes short circuit or connects matched load.
As being further improved for said program, several longitudinal straight slot spaced sets on metallic waveguide are several
Pairs of lateral straight slot spaced set, and the gap length of adjacent two pairs lateral straight slots and two neighboring longitudinal straight slot
Gap length it is identical.
As being further improved for said program, the material of metallic waveguide is metal material, or is plating metal on surface
Composite material.
The present invention also provides a kind of design methods of circular polarisation Waveguide slot antenna, for designing above-mentioned arbitrary circularly polarised wave
Lead slot antenna comprising following steps：
Main mould transmission requirement under the spatial dimension and low-limit frequency that are limited according to frequency range, structure determines metal waveguide
The sectional dimension of pipe；
The arrange parameter of longitudinal straight slot and lateral straight slot on metallic waveguide is determined according to sectional dimension；
Circular polarisation Waveguide slot antenna is manufactured according to the sectional dimension and the arrange parameter.
As being further improved for said program, under the spatial dimension and low-limit frequency that are limited according to frequency range, structure
Main mould transmission requirement determine that the sectional dimension of metallic waveguide includes：
The width (a) of the bottom surface wave guide wall of metallic waveguide is less than 0.7 wavelength；
The width (b) of backrest wave guide wall is less than 0.35 wavelength；
The height (ah) of the bottom surface wave guide wall of metallic waveguide is less than 0.5 wavelength；
The height (bh) of backrest wave guide wall is 0.25 wavelength.
Further, determine that the arrange parameter of longitudinal straight slot on metallic waveguide includes according to sectional dimension：
The length L of longitudinal straight slotsIt is determined by following formula：Ls=0.45 λ0；
The width W of longitudinal straight slotsIt is determined by following formula：0.1λ0≤Ws≤0.125λ0。
Further, determine that the arrange parameter of lateral straight slot on metallic waveguide includes according to sectional dimension：
In symmetrical inclined slot：L2≤bh, L1=b+2*t, gap size total length L 1+L2*2 are 0.45 λ0, wherein
Gap length on upper L-shaped waveguide backrest wave guide wall top surface is L1, is located at L-shaped waveguide backrest wave guide wall both sides metallic walls
A length of L2.
The present invention is provided with longitudinal straight slot and lateral straight slot on metallic waveguide, passes through the metal hollow in L-shaped
Longitudinal straight slot and lateral straight slot are set on waveguide, construct the circular polarisation Waveguide slot antenna for having advantage, the antenna
Simple in structure and working efficiency is higher, solves that antenna structure is complex in the prior art and working efficiency is relatively low, Wu Faman
The problem of growing communication of foot and radar system demand.
Description of the drawings
Fig. 1 is the structural schematic diagram of circular polarisation Waveguide slot antenna of the present invention；
Fig. 2 is " L " corrugated waveguide cross-sectional view of circular polarisation Waveguide slot antenna in Fig. 1；
Fig. 3 is the vertical view of circular polarisation Waveguide slot antenna in Fig. 1；
Fig. 4 is circular polarisation Waveguide slot antenna in Fig. 3 along the sectional view of hatching line A-A；
Fig. 5 is circular polarisation Waveguide slot antenna in Fig. 3 along the sectional view of hatching line B-B；
Fig. 6 is that the centre frequency axis of four element antennas of the invention compares curve；
Fig. 7 is axis ratio-frequency curve of four element antennas of the invention；
Fig. 8 is the centre frequency directional diagram curve of four element antennas of the invention；
Fig. 9 is the circular polarisation Waveguide slot standing-wave antenna battle array structural schematic diagram of 8 × unit 8 of the invention；
Figure 10 is the circular polarisation Waveguide slot antenna travelling wave array structural schematic diagram of 8 × unit 8 of the invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Based on antenna structure in the prior art, complex and working efficiency is relatively low, cannot be satisfied growing communication
The problem of with the requirement of radar system, an embodiment of the present invention provides a kind of designs of circular polarisation Waveguide slot antenna and the antenna
Method, wherein the structural representation of the circular polarisation Waveguide slot antenna is as shown in Figures 1 and 2, including：Metallic waveguide 1, longitudinal direction
Straight slot 2 and transverse slot 3.Metallic waveguide 1 is the L-shaped hollow metallic waveguide in cross section, is set on metallic waveguide 1
There are multiple longitudinal straight slots 2 and multiple lateral straight slots 3；One end 5 of metallic waveguide 1 is antenna input port, and the other end 6 is arranged
For closing short circuit or matched load is connect, to constitute the main frame of circular polarisation Waveguide slot antenna.
Several longitudinal straight slots 2 are offered on the tube wall of metallic waveguide 1 and several longitudinal straight slots 2 are corresponding and equal
For several pairs of lateral straight slots 3 of symmetrical inclined slot.Several longitudinal direction straight slots 2 are mutually parallel and edge is parallel to metal wave
The extending direction of conduit 1 is arranged, and several pairs of lateral straight slots 3 are mutually parallel and along the extension perpendicular to metallic waveguide 1
Direction is arranged.Metallic waveguide 1 is hollow metallic waveguide, and is set along the same side of 1 extending direction of metallic waveguide
There are parallel two rows of backrest wave guide walls 10, often the interval of backrest wave guide wall 10 setting on row.It is opened up on each backrest wave guide wall 10
There are a pair of lateral straight slot 3, each pair of transverse direction straight slot 3 to cut the wave guide wall into 10 both sides of backrest wave guide wall.In the backrest of same row
On wave guide wall 10, opened up between two neighboring backrest wave guide wall 10 there are one longitudinal straight slot 2, two rows of longitudinal direction straight slots 2 deviate
The center line of metallic waveguide 1.Often longitudinal straight slot 2 on row is arranged with the pairs of interval of lateral straight slot 3, between two rows of
Longitudinal straight slot 2 is also spaced setting with pairs of lateral straight slot 3.The center of two rows of longitudinal direction straight slots 2 and corresponding a pair of cross
Metal waveguide 1 is in " L " just as in a cross section to the center of straight slot 3.
In the embodiment of the present invention, also it is staggered, makes with backrest wave guide wall 10 between two rows of backrest wave guide walls 10
The cross section of position, metallic waveguide 1 is L-shaped.Longitudinal straight slot 2 and lateral straight slot are provided on metallic waveguide 1
3, by the way that longitudinal straight slot 2 and lateral straight slot 3 are arranged on the hollow metallic waveguide 1 of L-shaped, construct the circle for having advantage
Poled waveguide slot antenna, the antenna structure is simple and working efficiency is higher, and it is more multiple to solve antenna structure in the prior art
Miscellaneous and working efficiency is relatively low, the problem of cannot be satisfied growing communication and radar system demand.
As shown in figs. 1 and 3, when setting, longitudinal straight slot 2 and lateral straight slot 3 are opened on the tube wall of metallic waveguide 1；
Longitudinal straight slot 2 is opened in the metallic walls of 1 bottom surface of metallic waveguide, along 1 longitudinal arrangement of metallic waveguide, and is deviateed in waveguide
Heart line；Lateral straight slot 3 is the lateral straight slot pair being opened on the backrest wave guide wall of metallic waveguide 1, and is cut into both sides
Wave guide wall；The center of longitudinal straight slot 2 and the center of lateral straight slot 3 are in the same cross section of " L " shape metallic waveguide 1
It is interior.
2 spaced set of multiple longitudinal straight slots on metallic waveguide 1, multiple transverse direction 3 spaced sets of straight slot, and
The length that each two longitudinal direction straight slot 2 is spaced is identical as the length that each two transverse direction straight slot 3 is spaced.
In implementation process, the main mould transmission requirement under the spatial dimension and low-limit frequency that are limited according to frequency range, structure
Determine that the sectional dimension of metallic waveguide may include following process：
Main mould transmission requirement under the spatial dimension and low-limit frequency that are limited according to frequency range, structure determines metal waveguide
The sectional dimension of pipe includes：" L " the shape metallic waveguide bottom width a is less than 0.7 wavelength；" L " the shape metallic waveguide
Width b is less than 0.35 wavelength above；The height ah of " L " the shape metallic waveguide surface wave guide wall is less than 0.5 wavelength；It is described
The height bh of " L " shape metallic waveguide backrest is 0.25 wavelength.
Determine that the arrange parameter of longitudinal straight slot on the metallic waveguide includes according to sectional dimension：The longitudinal direction vertical masonry joint
Gap length LsIt is determined by following formula：Ls=0.45 λ0；The longitudinal direction straight slot width WsIt is determined by following formula：0.1λ0≤Ws≤0.125
λ0。
Determine that the arrange parameter of lateral straight slot on the metallic waveguide includes according to sectional dimension：In lateral straight slot
In：L2≤bh, L1=b+2*t, lateral straight slot size total length L 1+L2*2 are 0.45 λ0, wherein it is leaned on positioned at upper L-shaped waveguide
It is L1 to carry on the back the gap length on the wave guide wall of top surface, is located at a length of L2 of L-shaped waveguide backrest wave guide wall both sides metallic walls.
Preferred embodiment
As shown in Figure 1, an embodiment of the present invention provides a kind of broadband circle polarized Waveguide slot antenna simple in structure, the circle
Poled waveguide slot antenna not only can be standing-wave antenna, but also can be travelling-wave aerial.The program is the metal in " L " corrugated waveguide
Two radiating slots are opened on wall, to realize circular polarization radiation unit, are had the advantages that simple in structure, easy to process.Technical solution
It is as follows：
L-shaped Waveguide slot circular polarized antenna, including metallic waveguide 1, metallic waveguide 1 are equipped with equidistantly more than two
Elongated longitudinal straight slot 2 and lateral straight slot 3, the L-shaped hollow metal waveguide in cross section of the metallic waveguide 1
Pipe；Described 1 one end of metallic waveguide is antenna input port, other end closing short circuit or connects matched load, constitutes circularly polarised wave
Seam guide gap standing-wave antenna or circular polarisation Waveguide slot travelling-wave aerial.
Wherein, the material of waveguide 1 can be metal material, or plate the composite material of metal, longitudinal straight slot 2
It is opened in lateral straight slot 3 on the tube wall of metallic waveguide 1；Longitudinal straight slot 2 is opened in the metallic walls of 1 bottom surface of metallic waveguide
On, along 1 longitudinal arrangement of metallic waveguide, and deviate waveguide tube hub line；Lateral straight slot 3 is opened in the metallic waveguide backrest
Wave guide wall on, and cut the wave guide wall into both sides；The center of longitudinal straight slot 2 and the center of lateral straight slot 3 are in " L " shape
In the same cross section of waveguide.
The said program of the embodiment of the present invention is described further below in conjunction with the accompanying drawings.
As shown in Fig. 2, the caliber size base width of " L " corrugated waveguide be a, above width be b, the height of bottom surface wave guide wall
Degree is ah, and the height of backrest wave guide wall is bh, and metal wall thickness is t；As shown in Fig. 2, longitudinal straight slot length is Ls, width Ws,
Disalignment Xs；Lateral straight slot width is also Ws, and the length for being located at upper L-shaped waveguide backrest top surface is L1, as shown in figure 4,
A length of L2 positioned at backrest wave guide wall both sides.
When specific design, certain antenna array index is provided, general circular polarized antenna index is：Working frequency, axis ratio, wave
Beam width, minor level and structural requirement are described below and how to be set by antenna of the present invention according to index request
Count circular polarization antenna array.
Assuming that given frequency range is fl—fh, wherein flFor low-limit frequency, fhFor highest frequency, f0It is centre frequency.
Specific parameter determines as follows：
As shown in figure 5, according to frequency range, the spatial dimension and low-limit frequency f of structure limitationlLower main mould transmission is wanted
It asks, determines the sectional dimension of waveguide.
Waveguide bottom width a is less than 0.7 wavelength；Width b is less than 0.35 wavelength above waveguide；The waveguide of waveguide bottom surface
The height ah of wall is less than 0.5 wavelength；The height bh of waveguide backrest is 0.25 wavelength；
Metal waveguide pipe thickness t determines with working ability, preferably 1.0mm.
Above-mentioned longitudinal direction straight slot length is determined by following formula：Ls=0.45 λ0；Width is determined by following formula：0.1λ0≤Ws≤
0.125λ0。
In above-mentioned transverse direction straight slot：L2≤bh, L1=b+2*t, gap size total length L 1+L2*2 are 0.45 λ0.It is above-mentioned
Xs is equal to admittance value using two gaps and the sum of four gaps are 1 as design criteria, the parameter for the length in gap and biasing
Computational methods be this professional designer known to, details are not described herein again.
A specific example is provided below to illustrate above-mentioned setting.
As shown in fig. 6, by 4 unit circular polarization waveguide standing-wave antenna battle arrays of equally distributed X-band, centre frequency is
10GHz is uniformly distributed.This antenna array has 4 units, i.e. 4 L-shaped waveguide bottom surface wave guide walls on single " L " corrugated waveguide
Lateral straight slot in upper longitudinal direction straight slot and 4 L-shaped waveguide backrest wave guide walls.Longitudinal straight slot is along wave on adjacent bottom surface wave guide wall
Catheter center's line both sides staggeredly bias.Longitudinal straight slot amount of bias is identical on 4 bottom surface wave guide walls, and seam length is identical, and 4 transverse directions are straight
The length in gap is identical.The center of longitudinal straight slot and lateral straight slot is located at the same cross section of " L " corrugated waveguide.4 longitudinal directions
Straight slot and 4 lateral straight slots are along the longitudinal equidistantly arrangement of " L " corrugated waveguide, spacing d.
One end 5 of " L " corrugated waveguide is feed excitation end；The other end 6 is short circuit metal face, its nearest seam of short-circuit identity distance
0.25 centre frequency waveguide wavelength of centre distance.
The determination of design parameter is as follows：
The bottom surface broadside a of " L " corrugated waveguide is 20mm, and the height ah of both sides shoulder wave guide wall is 6mm, above width b be
6mm, height of head bh are 5mm.L2 is 6.19mm on the outside of the wave guide wall of symmetrical inclined slot, rake joist on the shoulder wave guide wall of both sides
Length L1 is 16.7mm, and biasing Xs is 1.5mm, and slit width degree Ws is 2mm.Adjacent seam is 25mm along waveguide longitudinal pitch d.Short circuit
Identity distance is from the last one unit center 12.5mm.
Fig. 6 is that 4 element antenna embodiment centre frequency axis are less than 0.4dB than curve, normal beam axis ratio in Fig. 1, vertically
In linear array direction section, it is less than 3dB in ± 40 ° of range inner shaft ratios.Fig. 7 is that 4 element antenna embodiment axis ratios become with frequency in Fig. 1
Rate response curve is less than 3dB in frequency 8.6GHz~10.6GHz bandwidth inner shaft ratio.Fig. 8 is 4 element antenna embodiment in Fig. 1
Centre frequency antenna pattern and its cross polarization, the antenna array cross polarization level are less than main polarization 32dB or more.
The different antennae battle array shown in Fig. 9 and Figure 10 may be implemented by extension for the antenna of the embodiment of the present invention.For example, waveguide
Two terminal short circuits of pipe constitute middle feedback circular polarisation standing wave shown in Fig. 9 in the centre of linear array using the feed excitation of coaxial line 9
Planar array.One end of waveguide is as input port, and other end matching connection loads 8, then constitutes circular polarisation row shown in Fig. 10
Wave planar array.
A kind of broadband circle polarized Waveguide slot antenna provided in an embodiment of the present invention solves lacking for circularly polarised wave lead antenna
Point is tied using realizing circular polarisation on waveguide (L-shaped cross section metal pipe) while by the way of lateral straight slot and longitudinal straight slot
Structure is simple, is connected by multiple units, it is easy to realize circular polarisation traveling wave battle array or circular polarisation standing-wave array.Its advantageous effects body
Present the following aspects：
1. opening longitudinal straight slot on lateral straight slot and bottom surface wave guide wall using being opened on the backrest wave guide wall of " L " corrugated waveguide
Realize circular polarisation, it is simple in structure, easy to process, light-weight；
2. by selecting the backrest of L-shaped waveguide in the left or right side of waveguide, left-handed entelechy can be readily obtained
Change or right-handed circular polarization antenna element；
3. being loaded by metallic waveguide terminal short circuit or matching connection, circular polarisation standing-wave antenna or entelechy may be implemented
Change travelling-wave aerial；
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of circular polarisation Waveguide slot antenna comprising metallic waveguide (1) offers on the tube wall of metallic waveguide (1)
Several longitudinal direction straight slots (2) and several longitudinal straight slots (2) are corresponding and be several pairs of transverse directions of symmetrical inclined slot
Straight slot (3)；Several longitudinal direction straight slots (2) are mutually parallel and along the extending direction settings for being parallel to metallic waveguide (1), several
Each pair of lateral straight slot (3) in pairs of lateral straight slot (3) is mutually parallel, and in several pairs of lateral straight slots (3)
Each pair of lateral straight slot (3) be arranged along the extending direction perpendicular to metallic waveguide (1)；It is characterized in that：Metallic waveguide
(1) it is hollow metallic waveguide, and is being equipped with parallel two rows of backrests along the same side of metallic waveguide (1) extending direction
Wave guide wall (10), with backrest wave guide wall (10) the interval setting on row；It is offered on each backrest wave guide wall (10) a pair of lateral
Straight slot (3), each pair of transverse direction straight slot (3) cut the wave guide wall into backrest wave guide wall (10) both sides；In the backrest waveguide of same row
It on wall (10), is opened up between two neighboring backrest wave guide wall (10) there are one longitudinal direction straight slot (2), two rows of longitudinal direction straight slots (2)
Deviate the center line of metallic waveguide (1)；It is arranged with pairs of lateral straight slot (3) interval with longitudinal straight slot (2) on row,
Longitudinal straight slot (2) between two rows is also spaced setting with pairs of lateral straight slot (3)；In two rows of longitudinal direction straight slots (2)
The center of the heart and corresponding a pair of lateral straight slot (3) is in the L-shaped same cross section of metallic waveguide (1).
2. circular polarisation Waveguide slot antenna as described in claim 1, which is characterized in that between two rows of backrest wave guide walls (10)
It is staggered, makes in the position with backrest wave guide wall (10), the cross section of metallic waveguide (1) is L-shaped.
3. circular polarisation Waveguide slot antenna as claimed in claim 2, which is characterized in that metallic waveguide (1) meets following item
Part：
The width (a) of the bottom surface wave guide wall of metallic waveguide (1) is less than 0.7 wavelength；
The width (b) of backrest wave guide wall (10) is less than 0.35 wavelength；
The height (ah) of the bottom surface wave guide wall of metallic waveguide (1) is less than 0.5 wavelength；
The height (bh) of backrest wave guide wall (10) is 0.25 wavelength.
4. circular polarisation Waveguide slot antenna as described in claim 1, which is characterized in that one end (5) of metallic waveguide (1) is
Antenna input port, the other end (6) are set as closing short circuit or connect matched load.
5. circular polarisation Waveguide slot antenna as described in claim 1, which is characterized in that several vertical on metallic waveguide (1)
To straight slot (2) spaced set, several pairs of lateral straight slot (3) spaced sets, and adjacent two pairs lateral straight slots
(3) gap length is identical as two neighboring longitudinal gap length of straight slot (2).
6. circular polarisation Waveguide slot antenna as described in claim 1, which is characterized in that the material of metallic waveguide (1) is gold
Belong to material, or the composite material for plating metal on surface.
7. a kind of design method of circular polarisation Waveguide slot antenna, for designing entelechy according to any one of claims 1 to 6
Change Waveguide slot antenna, which is characterized in that including：
Main mould transmission requirement under the spatial dimension and low-limit frequency that are limited according to frequency range, structure determines metallic waveguide
(1) sectional dimension；
The arrange parameter of longitudinal straight slot (2) and lateral straight slot (3) on metallic waveguide (1) is determined according to sectional dimension；
Circular polarisation Waveguide slot antenna is manufactured according to the sectional dimension and the arrange parameter.
8. the design method of circular polarisation Waveguide slot antenna as claimed in claim 7, which is characterized in that according to frequency range,
Main mould transmission requirement under the spatial dimension and low-limit frequency of structure limitation determines that the sectional dimension of metallic waveguide (1) includes：
The width (a) of the bottom surface wave guide wall of metallic waveguide (1) is less than 0.7 wavelength；
The width (b) of backrest wave guide wall (10) is less than 0.35 wavelength；
The height (ah) of the bottom surface wave guide wall of metallic waveguide (1) is less than 0.5 wavelength；
The height (bh) of backrest wave guide wall (10) is 0.25 wavelength.
9. the design method of circular polarisation Waveguide slot antenna as claimed in claim 8, which is characterized in that true according to sectional dimension
The arrange parameter for determining on metallic waveguide (1) longitudinal straight slot (2) includes：
The length L of longitudinal straight slot (2)sIt is determined by following formula：Ls=0.45 λ0；
The width W of longitudinal straight slot (2)sIt is determined by following formula：0.1λ0≤Ws≤0.125λ0。
10. the design method of circular polarisation Waveguide slot antenna as claimed in claim 8, which is characterized in that according to sectional dimension
Determine that the arrange parameter of lateral straight slot (3) on metallic waveguide (1) includes：
In symmetrical inclined slot：L2≤bh, L1=b+2*t, gap size total length L 1+L2*2 are 0.45 λ0, wherein it is located at
Gap length on upper L-shaped waveguide backrest wave guide wall (10) top surface is L1, is located at L-shaped waveguide backrest wave guide wall (10) both sides metal
A length of L2 of wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610052970.5A CN105633587B (en) | 2016-01-25 | 2016-01-25 | A kind of circular polarisation Waveguide slot antenna and its design method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610052970.5A CN105633587B (en) | 2016-01-25 | 2016-01-25 | A kind of circular polarisation Waveguide slot antenna and its design method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105633587A CN105633587A (en) | 2016-06-01 |
| CN105633587B true CN105633587B (en) | 2018-07-20 |
Family
ID=56048279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610052970.5A Active CN105633587B (en) | 2016-01-25 | 2016-01-25 | A kind of circular polarisation Waveguide slot antenna and its design method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105633587B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018207796A1 (en) * | 2017-05-11 | 2018-11-15 | Nidec Corporation | Waveguide device, and antenna device including the waveguide device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0548323A (en) * | 1991-08-09 | 1993-02-26 | Asahi Chem Ind Co Ltd | Antenna in common use for two polarized waves |
| EP0775373A1 (en) * | 1993-11-30 | 1997-05-28 | Saab-Ericsson Space Aktiebolag | Waveguide antenna |
| US5638079A (en) * | 1993-11-12 | 1997-06-10 | Ramot University Authority For Applied Research & Industrial Development Ltd. | Slotted waveguide array antennas |
| WO2009084050A9 (en) * | 2007-12-28 | 2010-12-02 | Selex Communications S.P.A. | Slot antenna and method for operating the same |
| JP4606199B2 (en) * | 2005-02-24 | 2011-01-05 | 日本無線株式会社 | Waveguide slot array antenna |
| CN103490168A (en) * | 2013-09-29 | 2014-01-01 | 中国电子科技集团公司第三十八研究所 | Circular polarized antenna |
| JP5424954B2 (en) * | 2010-03-29 | 2014-02-26 | 三菱電機株式会社 | Waveguide slot array antenna |
| CN104538742A (en) * | 2015-01-09 | 2015-04-22 | 中国电子科技集团公司第三十八研究所 | Circular polarization waveguide slot antenna and design method thereof |
-
2016
- 2016-01-25 CN CN201610052970.5A patent/CN105633587B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0548323A (en) * | 1991-08-09 | 1993-02-26 | Asahi Chem Ind Co Ltd | Antenna in common use for two polarized waves |
| US5638079A (en) * | 1993-11-12 | 1997-06-10 | Ramot University Authority For Applied Research & Industrial Development Ltd. | Slotted waveguide array antennas |
| EP0775373A1 (en) * | 1993-11-30 | 1997-05-28 | Saab-Ericsson Space Aktiebolag | Waveguide antenna |
| JP4606199B2 (en) * | 2005-02-24 | 2011-01-05 | 日本無線株式会社 | Waveguide slot array antenna |
| WO2009084050A9 (en) * | 2007-12-28 | 2010-12-02 | Selex Communications S.P.A. | Slot antenna and method for operating the same |
| JP5424954B2 (en) * | 2010-03-29 | 2014-02-26 | 三菱電機株式会社 | Waveguide slot array antenna |
| CN103490168A (en) * | 2013-09-29 | 2014-01-01 | 中国电子科技集团公司第三十八研究所 | Circular polarized antenna |
| CN104538742A (en) * | 2015-01-09 | 2015-04-22 | 中国电子科技集团公司第三十八研究所 | Circular polarization waveguide slot antenna and design method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105633587A (en) | 2016-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108987911B (en) | Millimeter wave beam forming microstrip array antenna based on SIW and design method | |
| US8648759B2 (en) | Variable height radiating aperture | |
| CN104332714B (en) | Dual-polarized oblique beam waveguide slot array antenna | |
| US8193990B2 (en) | Microstrip array antenna | |
| EP3220481B1 (en) | Waveguide slot array antenna | |
| CN104538742B (en) | A kind of circular polarisation Waveguide slot antenna and its method for designing | |
| US7498989B1 (en) | Stacked-disk antenna element with wings, and array thereof | |
| CN1941505B (en) | Microband antenna C-band left-hand material and its array | |
| EP2908380A1 (en) | Wideband dual-polarized patch antenna array and methods useful in conjunction therewith | |
| CN103490168B (en) | Circular polarized antenna | |
| CN106058450A (en) | Plane patch filter antenna | |
| CN107331965B (en) | Low gain low sidelobe micro base station antenna | |
| CN101702467B (en) | Circular polarization waveguide standing-wave antenna | |
| CN204289717U (en) | Dual polarization oblique wave beam waveguide slot array antenna | |
| CN109286066A (en) | A kind of leaky-wave antenna of Stepped Impedance composite left-and-right-hand structure | |
| EP2381531B1 (en) | Phased array antenna | |
| CN204011734U (en) | A kind of circular polarized antenna | |
| CN105742807B (en) | A kind of Vivaldi antenna assemblies applied to imaging system | |
| CN107834181A (en) | Ka wave band large-angle scanning circular polarization microstrip antennas | |
| CN105633587B (en) | A kind of circular polarisation Waveguide slot antenna and its design method | |
| CN101814659A (en) | Triangular slotted waveguide array antenna | |
| CN112688057A (en) | Broadband circularly polarized microstrip antenna based on crossed dipole | |
| CN107994325B (en) | Three-mode broadband dual circularly polarized microstrip antenna for U-band and S-band | |
| US6759992B2 (en) | Pyramidal-corrugated horn antenna for sector coverage | |
| Miura et al. | Bandwidth enhancement of a series-fed microstrip patch array antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |