CN106856262B - A kind of broadband opening ridge waveguide phased array antenna unit - Google Patents
A kind of broadband opening ridge waveguide phased array antenna unit Download PDFInfo
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- CN106856262B CN106856262B CN201510894765.9A CN201510894765A CN106856262B CN 106856262 B CN106856262 B CN 106856262B CN 201510894765 A CN201510894765 A CN 201510894765A CN 106856262 B CN106856262 B CN 106856262B
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- wave guide
- ridge
- guide wall
- waveguide
- broadside
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
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- 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
- H01Q13/06—Waveguide mouths
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Abstract
The present invention provides a kind of broadband opening ridge waveguide phased array antenna units, including rectangular wave guide wall, transition ridge, wave guide ridge and floor.Add ridge inside open rectangle waveguide, reduce the cutoff frequency of waveguide, reduces open ended waveguide sectional dimension, and then antenna element spacing can be shortened, ensure that antenna large-angle scanning in broader frequency range does not have graing lobe；Floor certain altitude is stretched out into open rectangle waveguide, optimizes the structure of open ended waveguide Yu antenna floor, reduces the mutual coupling between antenna element, ensure that antenna port Impedance matching in wideband wide scan is good, do not scan blind spot；The impedance that transition ridge is equivalent to air impedance and feeds between ridge waveguide impedance converts, therefore antenna current feed port can match in more wide frequency ranges.
Description
Technical field
The present invention relates to microwave technical fields, more particularly to a kind of broadband opening ridge waveguide phased array antenna unit.
Background technique
Open ended waveguide is common radiating element, has many advantages, such as that loss is small, high-efficient, power capacity is big, is widely applied
In microwave frequency band especially C, X and its in super band phased array antenna system.
Open ended waveguide in antenna element many documents at home and abroad as all being reported, such as 1998 seas Nian Lijian
Deng in depth analyzing in " analysis of mutual coupling between open end waveguide " text mutual symplectic unit reflection coefficient and mouth face
The influence of field distribution；Zhu Yiguo etc. is in " Design of a Wideband Active Phased Array Antenna
Using Open-ended Rectangular Waveguide as Radiating Element " in a text with opening square
Radiating element of the shape waveguide as active phased array, calculation result table line tomorrow have 20% bandwidth, have ± 45 degree in the face E
Scan capability.
But these documents are all based on simple open rectangle waveguide and carry out analysis and design, and bandwidth is also limited to
Within 20%, when bandwidth further increases, cell spacing can be further decreased, and the mutual coupling between unit can further deteriorate, and
And rectangular waveguide mouth size is necessarily less than cell spacing and is in cutoff modes in low frequency end when requiring in the face H progress large-angle scanning
Formula and be unable to Net long wave radiation.Therefore, this disadvantage seriously limits the use scope of open ended waveguide, such as high-resolution imaging radar
Just need antenna that there is the ability to work of big instant bandwidth and large-angle scanning in antenna and unjammable radar antenna.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, provide a kind of opening ridge waveguide phased array antenna of wideband wide scan
Unit can significantly improve the beamwidth of antenna, reduce the mutual coupling between unit, expand the use scope of antenna.
In view of the above problem of the prior art, according to one aspect of the present disclosure, the present invention uses following technology
Scheme:
A kind of broadband opening ridge waveguide phased array antenna unit, which is characterized in that including rectangular wave guide wall, transition ridge, wave
Lead ridge and floor, it is characterised in that:
Rectangular wave guide wall includes wave guide wall 1b, the left wave guide wall 1c of broadside and the right wave of broadside after wave guide wall 1a, narrow side before narrow side
Guide wall 1d, rectangular wave guide wall with a thickness of 0.7mm to 1mm, rectangular wave guide wall is the rectangular waveguide upper, open end distance surrounded
The height on floor is 0.2 to 0.3 times of wavelength, and the rectangular waveguide inner section width edge length surrounded is less than λh/(1+sinθB), and be greater than
0.5 times of wavelength, wherein λhFor wavelength corresponding to highest frequency in frequency band, θBFor the face H maximum scan angle, narrow side length is less than 0.5
Times wavelength；
Transition ridge includes left transition ridge 2a and right transition ridge 2b, and left transition ridge 2a is cuboid, and length is less than rectangular waveguide
The length of broadside, width are less than the half of rectangular waveguide narrow side width, are highly 0.1 to 0.15 times of wavelength, 2a, left transition ridge
It is connect in the inside of rectangular wave guide wall, and with the left wave guide wall 1c of broadside, upper end and rectangular wave guide wall are on the rectangular waveguide surrounded
Portion open end is concordant, and long side is parallel with the left wave guide wall 1c of broadside, and wave guide wall 1a before two broadsides to narrow side of left transition ridge 2a
Distance be equidistant with to wave guide wall 1b after narrow side；Right transition ridge 2b is identical as left transition ridge 2a in structure, position with
Left transition ridge 2a is symmetrical, and connect with the right wave guide wall 1d of broadside；
Wave guide ridge includes left wave guide ridge 3a and right wave guide ridge 3b, and left wave guide ridge 3a is cuboid, and length is less than rectangular waveguide
The length of broadside, width are less than the half of rectangular waveguide narrow side width, and left wave guide ridge 3a is located at the inside of rectangular wave guide wall, and with
The left wave guide wall 1c connection of broadside, upper end are connect with left excessively ridge 2a, and lower end is concordant with floor, and long side and the left wave guide wall 1c of broadside are flat
Row, and the distance of wave guide wall 1a is equidistant with to wave guide wall 1b after narrow side before two broadsides to narrow side of left wave guide ridge 3a；
Right wave guide ridge 3b is identical as left wave guide ridge 3a in structure, and position and left wave guide ridge 3a are symmetrical, and connects with the right wave guide wall 1d of broadside
It connects；
Floor includes left floor 4a and right floor 4b, respectively with the outer surface broadside left wave guide wall 1c and broadside right wave guide wall 1d
Connection, 4 longitudinal separation of floor is equal with the longitudinal separation of rectangular wave guide wall, and the left and right distance on floor 4 is by frequency range and maximum
Scan angle determines；
Rectangular wave guide wall, transition ridge, wave guide ridge and floor are good conductor metal material or surface layer is good conductor metal,
Microwave signal is radiated from the feed end feed-in below rectangular wave guide wall from open end above.
Compared with existing open rectangle waveguide phased array antenna unit, open rectangle waveguide of the invention is added due to inside
Ridge reduces the cutoff frequency of waveguide, greatly reduces the size of rectangular section, it is thus possible to realize in more broad frequency range
Wide-angle scanning in the face H significantly reduces the mutual coupling between antenna element, therefore since open ended waveguide stretches out floor certain altitude
Impedance matching can be realized in more broad frequency range.
The invention can be widely applied to the radar of the multi-targets recognition in broadband, SAR imaging and the fields such as anti-interference
In phased array antenna system.
Detailed description of the invention
Fig. 1 is stereoscopic schematic diagram of the invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the front view of Fig. 1.
Fig. 4 is that the rectangle in 8~12GHz frequency range of embodiment 1 is structured the formation periodic unit H Surface scan standing-wave ratio.
Fig. 5 is that the rectangle in 8~12GHz frequency range of embodiment 2 is structured the formation periodic unit H Surface scan standing-wave ratio.
Fig. 6 is that the rectangle in 8~12GHz frequency range of embodiment 2 is structured the formation periodic unit E Surface scan standing-wave ratio.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
Referring to Fig. 1-6, a kind of broadband opening ridge waveguide phased array antenna unit of the invention, including rectangular wave guide wall, mistake
Cross ridge, wave guide ridge and floor, it is characterised in that:
Rectangular wave guide wall includes wave guide wall 1b, the left wave guide wall 1c of broadside and the right wave of broadside after wave guide wall 1a, narrow side before narrow side
Guide wall 1d, rectangular wave guide wall with a thickness of 0.7mm to 1mm, rectangular wave guide wall is the rectangular waveguide upper, open end distance surrounded
The height on floor is 0.2 to 0.3 times of wavelength, and the rectangular waveguide inner section width edge length surrounded is less than λh/(1+sinθB), and be greater than
0.5 times of wavelength, wherein λhFor wavelength corresponding to highest frequency in frequency band, θBFor the face H maximum scan angle, narrow side length is less than 0.5
Times wavelength.
Transition ridge includes left transition ridge 2a and right transition ridge 2b, and left transition ridge 2a is cuboid, and length is less than rectangular waveguide
The length of broadside, width are less than the half of rectangular waveguide narrow side width, are highly 0.1 to 0.15 times of wavelength, 2a, left transition ridge
It is connect in the inside of rectangular wave guide wall, and with the left wave guide wall 1c of broadside, upper end and rectangular wave guide wall are on the rectangular waveguide surrounded
Portion open end is concordant, and long side is parallel with the left wave guide wall 1c of broadside, and wave guide wall 1a before two broadsides to narrow side of left transition ridge 2a
Distance be equidistant with to wave guide wall 1b after narrow side；Right transition ridge 2b is identical as left transition ridge 2a in structure, position with
Left transition ridge 2a is symmetrical, and connect with the right wave guide wall 1d of broadside.
Wave guide ridge includes left wave guide ridge 3a and right wave guide ridge 3b, and left wave guide ridge 3a is cuboid, and length is less than rectangular waveguide
The length of broadside, width are less than the half of rectangular waveguide narrow side width, and left wave guide ridge 3a is located at the inside of rectangular wave guide wall, and with
The left wave guide wall 1c connection of broadside, upper end are connect with left excessively ridge 2a, and lower end is concordant with floor, and long side and the left wave guide wall 1c of broadside are flat
Row, and the distance of wave guide wall 1a is equidistant with to wave guide wall 1b after narrow side before two broadsides to narrow side of left wave guide ridge 3a；
Right wave guide ridge 3b is identical as left wave guide ridge 3a in structure, and position and left wave guide ridge 3a are symmetrical, and connects with the right wave guide wall 1d of broadside
It connects.
Floor includes left floor 4a and right floor 4b, respectively with the outer surface broadside left wave guide wall 1c and broadside right wave guide wall 1d
Connection, 4 longitudinal separation of floor is equal with the longitudinal separation of rectangular wave guide wall, and the left and right distance on floor 4 is by frequency range and maximum
Scan angle determines.
Rectangular wave guide wall, transition ridge, wave guide ridge and floor are good conductor metal material or surface layer is good conductor metal,
Microwave signal is radiated from the feed end feed-in below rectangular wave guide wall from open end above.
The working principle of the invention is: compared with existing open rectangle waveguide radiator, the present invention is in open rectangle wave
Internal plus ridge is led, the cutoff frequency of waveguide is reduced, reduces open ended waveguide sectional dimension, and then antenna element spacing can be shortened,
It ensure that antenna large-angle scanning in broader frequency range does not have graing lobe；Floor certain altitude is stretched out into open rectangle waveguide,
The structure of open ended waveguide Yu antenna floor is optimized, the mutual coupling between antenna element is reduced, ensure that antenna is swept in broadband and wideangle
Port Impedance matching is good when retouching, and does not scan blind spot；The air that functions as of transition ridge inside open rectangle waveguide hinders
The anti-impedance between feed ridge waveguide impedance converts, therefore antenna current feed port can match in more wide frequency ranges.
2 specific embodiments of the invention are given below.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, rectangular wave guide wall with a thickness of 0.7mm, open end above is apart from floor
Height is 10.4mm, the rectangular waveguide long 15mm of inner section broadside, narrow side length 12mm surrounded.
Transition ridge includes left transition ridge 2a and right transition ridge 2b, and left transition ridge 2a is cuboid, length 6mm, and width is
2mm is highly 6.5mm, and right transition ridge 2b is identical as left transition ridge 2a in structure, and position and left transition ridge 2a are symmetrical.
Wave guide ridge includes left wave guide ridge 3a and right wave guide ridge 3b, and left wave guide ridge 3a is cuboid, length 6mm, and width is
3mm, right wave guide ridge 3b is identical as left wave guide ridge 3a in structure, and position and left wave guide ridge 3a are symmetrical.
The longitudinal separation on floor is 16.4mm, left and right distance 22mm.
Antenna element spacing is 22mm in the face E direction, is 16.6mm in the face H direction, rectangle is structured the formation, in 8~12GHz frequency
Meet the scanning requirement of 30 degree of the face E, from the point of view of Fig. 4 simulation result, the phased array antenna unit within the scope of X frequency range full bandwidth in range
Standing-wave ratio under periodic boundary condition is less than 2.
Embodiment 2
As shown in Fig. 1 to Fig. 3 and Fig. 5 and Fig. 6, rectangular wave guide wall with a thickness of 0.7mm, open end above distance ground
The height of plate is 9.54mm, the rectangular waveguide long 15mm of inner section broadside, narrow side length 12mm surrounded.
Transition ridge includes left transition ridge 2a and right transition ridge 2b, and left transition ridge 2a is cuboid, length 6mm, and width is
1.6mm is highly 4mm, and right transition ridge 2b is identical as left transition ridge 2a in structure, and position and left transition ridge 2a are symmetrical.
Wave guide ridge includes left wave guide ridge 3a and right wave guide ridge 3b, and left wave guide ridge 3a is cuboid, length 6mm, and width is
2.6mm, right wave guide ridge 3b is identical as left wave guide ridge 3a in structure, and position and left wave guide ridge 3a are symmetrical.
The longitudinal separation on floor is 16.4mm, left and right distance 16.6mm.
Antenna element spacing is 16.6mm in the face E direction, is 16.6mm in the face H direction, and rectangle is structured the formation, in 8~12GHz frequency
Meet the face E and the scanning requirement of 30 degree of the face H within the scope of rate simultaneously, from the point of view of Fig. 5 and Fig. 6 simulation result, in X frequency range full bandwidth range
Interior phased array antenna unit under periodic boundary condition 30 degree of the face H scanning range standing internal wave ratio less than 30 degree of the face 2, E scanning range
Standing internal wave ratio is less than 2.5.
Claims (2)
- The ridge waveguide phased array antenna unit 1. a kind of broadband is open, including rectangular wave guide wall, transition ridge, wave guide ridge and floor, It is characterized in that:Rectangular wave guide wall includes that wave guide wall (1b), the left wave guide wall of broadside (1c) and broadside are right after wave guide wall (1a), narrow side before narrow side Wave guide wall (1d), rectangular wave guide wall with a thickness of 0.7mm to 1mm, rectangular waveguide upper, open end that rectangular wave guide wall surrounds away from The height of liftoff plate is 0.2 to 0.3 times of wavelength, and the rectangular waveguide inner section width edge length surrounded is less than λh/(1+sinθB), and it is big In 0.5 times of wavelength, wherein λhFor wavelength corresponding to highest frequency in frequency band, θBFor the face H maximum scan angle, narrow side length is less than 0.5 times of wavelength；Transition ridge includes left transition ridge (2a) and right transition ridge (2b), and left transition ridge (2a) is cuboid, and length is less than rectangular wave The length of broadside is led, it is highly 0.1 to 0.15 times of wavelength that width, which is less than the half of rectangular waveguide narrow side width, left transition ridge (2a) is located at the inside of rectangular wave guide wall, and connect with the left wave guide wall of broadside (1c), the rectangle that upper end is surrounded with rectangular wave guide wall Waveguide upper, open end is concordant, and long side is parallel with broadside left wave guide wall (1c), and two broadsides of left transition ridge (2a) are to narrow side The distance of preceding wave guide wall (1a) and being equidistant to wave guide wall after narrow side (1b)；Right transition ridge (2b) in structure with left transition Ridge (2a) is identical, and position and left transition ridge (2a) symmetrically, and connect with the right wave guide wall of broadside (1d)；Wave guide ridge includes left wave guide ridge (3a) and right wave guide ridge (3b), and left wave guide ridge (3a) is cuboid, and length is less than rectangular wave The length of broadside is led, width is less than the half of rectangular waveguide narrow side width, and left wave guide ridge (3a) is located at the inside of rectangular wave guide wall, And connect with the left wave guide wall of broadside (1c), upper end is connect with left transition ridge (2a), and lower end is concordant with floor, and long side and broadside are left Wave guide wall (1c) in parallel, and before two broadsides to narrow side of left wave guide ridge (3a) distance of wave guide wall (1a) with to waveguide after narrow side Wall (1b's) is equidistant；Right wave guide ridge (3b) is identical as left wave guide ridge (3a) in structure, and position and left wave guide ridge (3a) are right Claim, and is connect with the right wave guide wall of broadside (1d)；Floor includes left floor (4a) and right floor (4b), respectively outside with the left wave guide wall of broadside (1c) and the right wave guide wall of broadside (1d) Surface connection, floor (4) longitudinal separation is equal with the longitudinal separation of rectangular wave guide wall, and the left and right distance of floor (4) is by frequency band model It encloses with maximum scan angle and determines.
- The ridge waveguide phased array antenna unit 2. a kind of broadband as described in claim 1 is open, it is characterised in that: the rectangular wave It is good conductor metal that guide wall, transition ridge, wave guide ridge and floor, which are good conductor metal material or surface layer, and microwave signal is from rectangle Feed end feed-in below wave guide wall is radiated from open end above.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108899655A (en) * | 2018-06-22 | 2018-11-27 | 中国人民解放军63653部队 | A kind of shaped grooved low axis of High power microwave measurement broadband waveguide compares circular polarized antenna |
| CN111180846A (en) * | 2020-03-13 | 2020-05-19 | 成都锦江电子系统工程有限公司 | Integrated wide-narrow ridge waveguide and preparation process thereof |
| CN113889766A (en) * | 2021-10-19 | 2022-01-04 | 中国舰船研究设计中心 | All-metal frequency scanning leaky-wave antenna based on backward radiation mode |
| CN114094318B (en) * | 2021-11-05 | 2024-06-14 | 中国航空工业集团公司雷华电子技术研究所 | Structure for realizing microstrip antenna wide-bandwidth angle scanning and microstrip antenna unit |
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| CN202712415U (en) * | 2012-07-18 | 2013-01-30 | 深圳市耐斯拓科技有限公司 | Novel matrix-type panel antenna |
| CN204375967U (en) * | 2014-12-27 | 2015-06-03 | 中国人民解放军63655部队 | A kind of decay adds ridge formula broadband low-gain antenna |
| CN104852124A (en) * | 2015-04-27 | 2015-08-19 | 北京空间飞行器总体设计部 | Satellite-borne K-band phased array antenna circularly-polarized waveguide radiation array |
| CN105006635A (en) * | 2015-08-10 | 2015-10-28 | 中国电子科技集团公司第三十八研究所 | Open-ended ridge waveguide array antenna integrated with internal correction channels |
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2015
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202712415U (en) * | 2012-07-18 | 2013-01-30 | 深圳市耐斯拓科技有限公司 | Novel matrix-type panel antenna |
| CN204375967U (en) * | 2014-12-27 | 2015-06-03 | 中国人民解放军63655部队 | A kind of decay adds ridge formula broadband low-gain antenna |
| CN104852124A (en) * | 2015-04-27 | 2015-08-19 | 北京空间飞行器总体设计部 | Satellite-borne K-band phased array antenna circularly-polarized waveguide radiation array |
| CN105006635A (en) * | 2015-08-10 | 2015-10-28 | 中国电子科技集团公司第三十八研究所 | Open-ended ridge waveguide array antenna integrated with internal correction channels |
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