CN106887716B - A kind of CTS flat plate array antenna - Google Patents
A kind of CTS flat plate array antenna Download PDFInfo
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- CN106887716B CN106887716B CN201710030209.6A CN201710030209A CN106887716B CN 106887716 B CN106887716 B CN 106887716B CN 201710030209 A CN201710030209 A CN 201710030209A CN 106887716 B CN106887716 B CN 106887716B
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
- H01P5/082—Transitions between hollow waveguides of different shape, e.g. between a rectangular and a circular waveguide
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/064—Two dimensional planar arrays using horn or slot aerials
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Abstract
The invention discloses a kind of CTS flat plate array antennas, and including polarization layer, radiating layer, mode conversion layer and the transmission network network layers set gradually from top to bottom, transmission network network layers include 4nA H-type single ridged waveguides power division network and waveguide magic T, 4nA H-type single ridged waveguides power division network is uniformly distributed to form the 1st grade of feeding network array of k row × k column, and the 1st grade of feeding network array includes 4n‑1A 1st grade of H-type single ridged waveguides power division network unit, the 2nd grade of the midpoint feeding network array connection of 4 H-type single ridged waveguides power division networks in each 1st grade of H-type single ridged waveguides power division network unit, waveguide magic T are arranged at the center of H-type single ridged waveguides power division network；Single ridged waveguides-rectangular waveguide converter is respectively arranged at four ports of each H-type single ridged waveguides power division network in the 1st grade of feeding network array；Advantage is that broadband equal amplitude feed can be provided for radiating layer, thereby guarantees that CTS flat plate array antenna has wider frequency band.
Description
Technical field
The present invention relates to a kind of array antennas, more particularly, to a kind of CTS flat plate array antenna.
Background technique
In satellite-based communications field, the high performance antenna of highly sensitive, broadband and low section can not only work multiple
Use cost can be greatly reduced in frequency range again, be widely used.Currently used plate aerial mainly has micro-strip plate
Array antenna and Waveguide slot flat plate array antenna.
Micro-strip flat plate array antenna has many advantages, such as that section is low, light-weight and easy to process, but works as frequency raising or micro-
When array scale with flat plate array antenna becomes larger, the conductor losses and dielectric loss of micro-strip flat plate array antenna will increase, by
This leads to micro-strip flat plate array antenna efficiency and gain reduction.When work is in the system of millimeter wave or higher frequency, micro-strip
The efficiency of flat plate array antenna is usually less than 30%.Although broadband may be implemented in micro-strip flat plate array antenna as a result, its
High-frequency, high efficiency and high-gain are not can be implemented simultaneously.
Waveguide slot flat plate array antenna dielectric loss is low, and efficiency and gain are not influenced by dielectric loss, can be real simultaneously
Existing high-frequency, high efficiency and high-gain.Waveguide slot flat plate array antenna is divided into Waveguide slot plate traveling-wave array antenna and wave
Two kinds of array antenna of seam guide gap plate standing wave.Wherein, the antenna beam of Waveguide slot plate traveling-wave array antenna is directed toward with frequency
It is inconsistent that variation causes antenna beam to be directed toward in broad frequency range, thus Waveguide slot plate traveling-wave array antenna ordinary circumstance
It can only be applied in extremely narrow bandwidth down, frequency band can not broaden, and limit the application of Waveguide slot plate traveling-wave array antenna；Wave
Seam guide gap standing wave array antenna is due to being substantially resonant antenna, once frequency departure resonance frequency, directional diagram and minor lobe electricity
Equality electrical performance indexes can occur obviously to deteriorate, and be also only applicable to narrow-band so as to cause Waveguide slot standing wave array antenna and answer
With frequency band can not broaden.
It is flat that CTS (continuous transverse minor matters) have been invented by nineteen ninety Hughes Electronics, the U.S. (Hughes Aircraft Company)
Plate array antenna.CTS flat plate array antenna is that a kind of Waveguide slot plate traveling-wave array antenna has low standing wave, high-frequency, height
Gain, high efficiency, and the characteristics such as at low cost insensitive to production precision.The main structure of CTS flat plate array antenna is parallel
Plate is fed in one end of parallel-plate, and the plane wave of transmission will be propagated along parallel plate region, in the flat of vertical incidence wave direction
Andante upper surface increases continuously tangential section, and increased tangential section shuts off the current distribution of upper surface, at this time inside parallel-plate
The energy of transmitting can pass through tangentially section coupling and outside radiated electromagnetic wave.The structure of the CTS flat plate array antenna only can
Using series feed, it is limited to series feed network and feed port switching network, which compares
It is narrow, it can not broaden.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of broadbands, the CTS flat plate array antenna of Sidelobe.
The technical scheme of the invention to solve the technical problem is: a kind of CTS flat plate array antenna, including from upper
Polarization layer, radiating layer, mode conversion layer and the transmission network network layers set gradually under, the transmission network network layers include 4nA H
Type single ridged waveguides power division network and waveguide magic T, n are the integer more than or equal to 0；As n=0, the waveguide magic T is arranged in institute
At the center for the H-type single ridged waveguides power division network stated；As n >=1,4nA H-type single ridged waveguides power division network uniformly divides
Cloth forms the 1st grade of feeding network array of k row × k column, whereinBy 2 rows in the 1st grade of feeding network array
The H-type single ridged waveguides power division network of × 2 column is as the 1st grade of H-type single ridged waveguides power division network unit, the 1st grade of transmission network
Network array includes 4n-1A 1st grade of H-type single ridged waveguides power division network unit, each 1st grade of H-type single ridged waveguides function subnetting
The midpoint of 4 H-type single ridged waveguides power division networks in network unit passes through a H-type single ridged waveguides power division network connection；Connection 4n-1
The H-type list ridge at the midpoint of 4 H-type single ridged waveguides power division networks in a 1st grade of H-type single ridged waveguides power division network unit
Waveguide power division network constitutes the 2nd grade of feeding network array of j row × j column, whereinBy the 2nd grade of transmission network
2 rows × 2 column H-type single ridged waveguides power division network is described as the 2nd grade of H-type single ridged waveguides power division network unit in network array
2nd grade of feeding network array includes 4n-1A 2nd grade of H-type single ridged waveguides power division network unit, each 2nd grade of H-type list ridge
The midpoint of 4 H-type single ridged waveguides power division networks in waveguide power division network unit is connected by a H-type single ridged waveguides power division network
It connects；And so on, until only including (n-1)th grade of H-type single ridged waveguides power division network unit of 4 H-type single ridged waveguides power division networks
It constitutes, the midpoint of 4 H-type single ridged waveguides power division networks in (n-1)th grade of H-type single ridged waveguides power division network unit also leads to
A H-type single ridged waveguides power division network connection is crossed, and the waveguide magic T is arranged in the H-type single ridged waveguides power division network
At the heart；It is respectively arranged at four ports of each H-type single ridged waveguides power division network in the 1st grade of feeding network array
Single ridged waveguides-rectangular waveguide converter.
The single ridged waveguides-rectangular waveguide converter includes the first rectangular waveguide, is set in first rectangular waveguide
It is equipped with the first rectangular enclosure, the face E step is provided on the left of first rectangular enclosure, the height of the face the E step is low
In the height of first rectangular enclosure, the front side wall of the face the E step and first rectangular enclosure, rear wall and
Left side wall connects, and the face H step, the face the H step and first square are provided on the right side of first rectangular enclosure
The right side wall of shape cavity is connected with rear wall, and the height of the face the H step is equal with the height of the first rectangular enclosure,
The upper surface of first rectangular waveguide is provided with the rectangular waveguide mouth communicated with first rectangular enclosure, and described
Single ridged waveguides mouth is provided on the leading flank of one rectangular waveguide, the single ridged waveguides mouth and first rectangular enclosure connect
Logical, the height of the single ridged waveguides mouth is equal with the height of the first rectangular enclosure, the bottom of the single ridged waveguides mouth
Face and the bottom surface of first rectangular enclosure are in the same plane, and the bottom surface of the single ridged waveguides mouth, which is provided with, to be extended to
Ridge ladder on the first rectangular enclosure bottom surface, the ridge ladder include being sequentially connected the first rectangle spine and the second square
Shape spine, the first rectangular ridge depth of beam are greater than the second rectangular ridge depth of beam, first rectangular ridge
Depth of beam is less than the height of first rectangular enclosure, and the single ridged waveguides mouth is used to connect the H-type list ridge ripple
Lead the port of power division network.In the structure, by being provided with ridge ladder in single ridged waveguides and the first rectangular waveguide joint, the
One face rectangular waveguide H corner is provided with the H face step contour with the first rectangular enclosure, in the first face rectangular waveguide E corner
It is provided with the face E step, ridge ladder, the face H step and the face E step are used to impedance matching, reduce because of CTS flat plate array antenna structure
Discontinuity bring return loss, make CTS flat plate array antenna have good broadband transmission characteristics.
The mode conversion layer includes multiple 1-4 constant amplitudes being evenly spaced on phase power splitter, the 1-4 constant amplitude
Include the second rectangular waveguide with phase power splitter, is provided with the second rectangular enclosure in second rectangular waveguide, described second
The first matching partition, the left side of second rectangular enclosure are respectively arranged in the middle part of the leading flank of rectangular enclosure and trailing flank
Be respectively arranged with the second matching partition in the middle part of face and right side, the upper surface of second rectangular waveguide be provided with it is described
The rectangular waveguide input port that communicates of the second rectangular enclosure, the two sides of each second matching disc are symmetrically arranged with rectangular wave
Delivery outlet is led, the rectangular waveguide delivery outlet extends to second rectangular wave from the bottom surface of second rectangular enclosure
The bottom surface led.In the structure, the first matching partition is respectively arranged in the middle part of the leading flank of the second rectangular enclosure and trailing flank, the
The second matching partition is respectively arranged in the middle part of the left side and right side of two rectangular enclosures, thus 1-4 constant amplitude is the same as phase power splitter
Essence, which is superimposed by an E-T power splitter with two H-T power splitters, to be formed, working band mistake caused by avoiding because of cavity resonant
Narrow problem.
Center spacing positioned at two rectangular waveguide input ports of the same side is W, wherein 0.75 λ0<W<1.15λ0, λ0For
The centre frequency of the working band of CTS flat plate array antenna.The structure can produce that amplitude is uniform, the consistent TEM wave of phase, have
Effect improves the gain and efficiency of CTS flat plate array antenna.
The radiating layer includes the multiple face E ladder horns being evenly spaced on.In the structure, the E of radiating layer use
Face ladder horn can make CTS flat plate array antenna obtain higher gain under conditions of broadband transmission.
The polarization layer includes medium substrate, the first metal layer and second metal layer, and the first metal layer includes
It etches in the medium substrate upper surface and in multiple first metal bands of periodic distribution, the second metal layer packet
Etching is included in the medium substrate lower surface and in multiple second metal bands of periodic distribution, second metal strip
The direction of band is parallel with the radiation direction of the radiating layer, first metal band and second metal band it
Between angle be 45 degree.The structure can be such that CTS flat plate array antenna E face directional diagram and the face H directional diagram is optimized, and realize low
Minor lobe.
Compared with the prior art, the advantages of the present invention are as follows pass through 4nA H-type single ridged waveguides power division network and waveguide magic T come
Transmission network network layers are constructed, n is the integer more than or equal to 0, and as n=0, H-type single ridged waveguides power division network is arranged in waveguide magic T
At center；As n >=1,4nA H-type single ridged waveguides power division network is uniformly distributed to form the 1st grade of feeding network battle array of k row × k column
Column, whereinUsing 2 rows in the 1st grade of feeding network array × 2 column H-type single ridged waveguides power division network as the 1st grade of H
Type single ridged waveguides power division network unit, the 1st grade of feeding network array include 4n-1A 1st grade of H-type single ridged waveguides power division network list
The midpoint of member, 4 H-type single ridged waveguides power division networks in each 1st grade of H-type single ridged waveguides power division network unit passes through a H
The connection of type single ridged waveguides power division network；Connection 4n-14 H-type list ridge ripples in a 1st grade of H-type single ridged waveguides power division network unit
The H-type single ridged waveguides power division network for leading the midpoint of power division network constitutes the 2nd grade of feeding network array of j row × j column, whereinUsing 2 rows in the 2nd grade of feeding network array × 2 column H-type single ridged waveguides power division network as the 2nd grade of H-type list ridge ripple
Power division network unit is led, the 2nd grade of feeding network array includes 4n-1A 2nd grade of H-type single ridged waveguides power division network unit, each 2nd
The midpoint of 4 H-type single ridged waveguides power division networks in grade H-type single ridged waveguides power division network unit passes through a H-type single ridged waveguides
Power division network connection；And so on, until only including (n-1)th grade of H-type single ridged waveguides function of 4 H-type single ridged waveguides power division networks
Subnetwork unit is constituted, the midpoint of 4 H-type single ridged waveguides power division networks in (n-1)th grade of H-type single ridged waveguides power division network unit
It is connected also by a H-type single ridged waveguides power division network, and the center of the H-type single ridged waveguides power division network is arranged in waveguide magic T
Place；Single ridge ripple is respectively arranged at four ports of each H-type single ridged waveguides power division network in the 1st grade of feeding network array
Lead-rectangular waveguide converter；Transmission network network layers using single ridged waveguides and present network, mould in CTS flat plate array antenna of the invention
Formula converter uses traveling-wave structure, and broadband equal amplitude feed can be provided for radiating layer, thereby guarantees that CTS flat plate array antenna
With wider frequency band.
Detailed description of the invention
Fig. 1 is the structural schematic diagram (non-polarized layer) of CTS flat plate array antenna of the invention)；
Fig. 2 is the partial schematic diagram of Fig. 1；
Fig. 3 is the exploded view of CTS flat plate array antenna of the invention；
Fig. 4 is the top view of the transmission network network layers of CTS flat plate array antenna of the invention；
Fig. 5 is the top view of the mode conversion layer of CTS flat plate array antenna of the invention；
Fig. 6 is the top view of the radiating layer of CTS flat plate array antenna of the invention；
Fig. 7 is the top view of the polarization layer of CTS flat plate array antenna of the invention；
Fig. 8 (a) is single ridged waveguides-rectangular waveguide converter structure chart of CTS flat plate array antenna of the invention；
Fig. 8 (b) is single ridged waveguides-rectangular waveguide converter exploded view of CTS flat plate array antenna of the invention；
Fig. 9 (a) is internal structure chart of the 1-4 constant amplitude with phase power splitter of CTS flat plate array antenna of the invention；
Fig. 9 (b) is top view of the 1-4 constant amplitude with phase power splitter of CTS flat plate array antenna of the invention；
Fig. 9 (c) is exploded view of the 1-4 constant amplitude with phase power splitter of CTS flat plate array antenna of the invention；
Figure 10 is the return loss plot of CTS flat plate array antenna of the invention in 71-76GHz；
Figure 11 is the return loss plot of CTS flat plate array antenna of the invention in 81-86GHz；
Figure 12 is the E-plane and H-plane pattern of CTS flat plate array antenna of the invention in 71GHz.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment one: as shown, a kind of CTS flat plate array antenna, including set gradually from top to bottom polarization layer 1,
Radiating layer 2, mode conversion layer 3 and transmission network network layers 4, transmission network network layers 4 include 4nA H-type single ridged waveguides power division network 5 and wave
Magic T6 is led, n is the integer more than or equal to 0, and as n=0, the center of H-type single ridged waveguides power division network 5 is arranged in waveguide magic T 6
Place；As n >=1,4nA H-type single ridged waveguides power division network 5 is uniformly distributed to form the 1st grade of feeding network array of k row × k column,
Wherein,It regard 2 rows in the 1st grade of feeding network array × 2 column H-type single ridged waveguides power division network 5 as the 1st grade of H-type
Single ridged waveguides power division network unit, the 1st grade of feeding network array include 4n-1A 1st grade of H-type single ridged waveguides power division network unit,
The midpoint of 4 H-type single ridged waveguides power division networks 5 in each 1st grade of H-type single ridged waveguides power division network unit passes through a H-type
Single ridged waveguides power division network 5 connects；Connection 4n-14 H-type single ridged waveguides in a 1st grade of H-type single ridged waveguides power division network unit
The H-type single ridged waveguides power division network 5 at the midpoint of power division network 5 constitutes the 2nd grade of feeding network array of j row × j column, whereinIt regard 2 rows in the 2nd grade of feeding network array × 2 column H-type single ridged waveguides power division network 5 as the 2nd grade of H-type list ridge
Waveguide power division network unit, the 2nd grade of feeding network array include 4n-1A 2nd grade of H-type single ridged waveguides power division network unit, each
The midpoint of 4 H-type single ridged waveguides power division networks 5 in 2nd grade of H-type single ridged waveguides power division network unit passes through a H-type list ridge
Waveguide power division network 5 connects；And so on, until only including (n-1)th grade of H-type list ridge of 4 H-type single ridged waveguides power division networks 5
Waveguide power division network unit is constituted, 4 H-type single ridged waveguides power division networks in (n-1)th grade of H-type single ridged waveguides power division network unit
5 midpoint is connected also by a H-type single ridged waveguides power division network 5, and waveguide magic T 6 is arranged in the H-type single ridged waveguides function subnetting
At the center of network 5；It is respectively set at four ports of each H-type single ridged waveguides power division network 5 in the 1st grade of feeding network array
There is single ridged waveguides-rectangular waveguide converter 7.
Embodiment two: as shown, a kind of CTS flat plate array antenna, including set gradually from top to bottom polarization layer 1,
Radiating layer 2, mode conversion layer 3 and transmission network network layers 4, transmission network network layers 4 include 4nA H-type single ridged waveguides power division network 5 and wave
Magic T6 is led, n is the integer more than or equal to 0, and as n=0, the center of H-type single ridged waveguides power division network 5 is arranged in waveguide magic T 6
Place；As n >=1,4nA H-type single ridged waveguides power division network 5 is uniformly distributed to form the 1st grade of feeding network array of k row × k column,
Wherein,It regard 2 rows in the 1st grade of feeding network array × 2 column H-type single ridged waveguides power division network 5 as the 1st grade of H-type
Single ridged waveguides power division network unit, the 1st grade of feeding network array include 4n-1A 1st grade of H-type single ridged waveguides power division network unit,
The midpoint of 4 H-type single ridged waveguides power division networks 5 in each 1st grade of H-type single ridged waveguides power division network unit passes through a H-type
Single ridged waveguides power division network 5 connects；Connection 4n-14 H-type single ridged waveguides in a 1st grade of H-type single ridged waveguides power division network unit
The H-type single ridged waveguides power division network 5 at the midpoint of power division network 5 constitutes the 2nd grade of feeding network array of j row × j column, whereinIt regard 2 rows in the 2nd grade of feeding network array × 2 column H-type single ridged waveguides power division network 5 as the 2nd grade of H-type list ridge
Waveguide power division network unit, the 2nd grade of feeding network array include 4n-1A 2nd grade of H-type single ridged waveguides power division network unit, each
The midpoint of 4 H-type single ridged waveguides power division networks 5 in 2nd grade of H-type single ridged waveguides power division network unit passes through a H-type list ridge
Waveguide power division network 5 connects；And so on, until only including (n-1)th grade of H-type list ridge of 4 H-type single ridged waveguides power division networks 5
Waveguide power division network unit is constituted, 4 H-type single ridged waveguides power division networks in (n-1)th grade of H-type single ridged waveguides power division network unit
5 midpoint is connected also by a H-type single ridged waveguides power division network 5, and waveguide magic T 6 is arranged in the H-type single ridged waveguides function subnetting
At the center of network 5；It is respectively set at four ports of each H-type single ridged waveguides power division network 5 in the 1st grade of feeding network array
There is single ridged waveguides-rectangular waveguide converter 7.
In the present embodiment, single ridged waveguides-rectangular waveguide converter 7 includes the first rectangular waveguide 71, the first rectangular waveguide 71
It is inside provided with the first rectangular enclosure 72, the left side of the first rectangular enclosure 72 is provided with the face E step 73, and the height of the face E step 73 is low
In the height of the first rectangular enclosure 72, the face E step 73 is connect with front side wall, rear wall and the left side wall of the first rectangular enclosure 72,
The right side of first rectangular enclosure 72 is provided with the face H step 74, the right side wall and rear wall of the face H step 74 and the first rectangular enclosure 72
Connection, the height of the face H step 74 is equal with the height of the first rectangular enclosure 72, the upper surface of the first rectangular waveguide 71 be provided with and
The rectangular waveguide mouth 75 that first rectangular enclosure 72 communicates is provided with single ridged waveguides mouth 76 on the leading flank of the first rectangular waveguide 71,
Single ridged waveguides mouth 76 is connected to the first rectangular enclosure 72, the height phase of the height of single ridged waveguides mouth 76 and the first rectangular enclosure 72
Deng the bottom surface of single ridged waveguides mouth 76 and the bottom surface of the first rectangular enclosure 72 are in the same plane, the bottom surface of single ridged waveguides mouth 76
It is provided with the ridge ladder extended on 72 bottom surface of the first rectangular enclosure, ridge ladder includes being sequentially connected the first rectangle spine 77 and the
Two rectangle spine 78, the height of the first rectangle spine 77 are greater than the height of the second rectangle spine 78, the height of the first rectangle spine 77
The height less than the first rectangular enclosure 72 is spent, single ridged waveguides mouth 76 is used to connect the port of H-type single ridged waveguides power division network 5.
Embodiment three: as shown, a kind of CTS flat plate array antenna, including set gradually from top to bottom polarization layer 1,
Radiating layer 2, mode conversion layer 3 and transmission network network layers 4, transmission network network layers 4 include 4nA H-type single ridged waveguides power division network 5 and wave
Magic T6 is led, n is the integer more than or equal to 0, and as n=0, the center of H-type single ridged waveguides power division network 5 is arranged in waveguide magic T 6
Place；As n >=1,4nA H-type single ridged waveguides power division network 5 is uniformly distributed to form the 1st grade of feeding network array of k row × k column,
Wherein,It regard 2 rows in the 1st grade of feeding network array × 2 column H-type single ridged waveguides power division network 5 as the 1st grade of H-type
Single ridged waveguides power division network unit, the 1st grade of feeding network array include 4n-1A 1st grade of H-type single ridged waveguides power division network unit,
The midpoint of 4 H-type single ridged waveguides power division networks 5 in each 1st grade of H-type single ridged waveguides power division network unit passes through a H-type
Single ridged waveguides power division network 5 connects；Connection 4n-14 H-type single ridged waveguides in a 1st grade of H-type single ridged waveguides power division network unit
The H-type single ridged waveguides power division network 5 at the midpoint of power division network 5 constitutes the 2nd grade of feeding network array of j row × j column, whereinIt regard 2 rows in the 2nd grade of feeding network array × 2 column H-type single ridged waveguides power division network 5 as the 2nd grade of H-type list ridge
Waveguide power division network unit, the 2nd grade of feeding network array include 4n-1A 2nd grade of H-type single ridged waveguides power division network unit, each
The midpoint of 4 H-type single ridged waveguides power division networks 5 in 2nd grade of H-type single ridged waveguides power division network unit passes through a H-type list ridge
Waveguide power division network 5 connects；And so on, until only including (n-1)th grade of H-type list ridge of 4 H-type single ridged waveguides power division networks 5
Waveguide power division network unit is constituted, 4 H-type single ridged waveguides power division networks in (n-1)th grade of H-type single ridged waveguides power division network unit
5 midpoint is connected also by a H-type single ridged waveguides power division network 5, and waveguide magic T 6 is arranged in the H-type single ridged waveguides function subnetting
At the center of network 5；It is respectively set at four ports of each H-type single ridged waveguides power division network 5 in the 1st grade of feeding network array
There is single ridged waveguides-rectangular waveguide converter 7.
In the present embodiment, single ridged waveguides-rectangular waveguide converter 7 includes the first rectangular waveguide 71, the first rectangular waveguide 71
It is inside provided with the first rectangular enclosure 72, the left side of the first rectangular enclosure 72 is provided with the face E step 73, and the height of the face E step 73 is low
In the height of the first rectangular enclosure 72, the face E step 73 is connect with front side wall, rear wall and the left side wall of the first rectangular enclosure 72,
The right side of first rectangular enclosure 72 is provided with the face H step 74, the right side wall and rear wall of the face H step 74 and the first rectangular enclosure 72
Connection, the height of the face H step 74 is equal with the height of the first rectangular enclosure 72, the upper surface of the first rectangular waveguide 71 be provided with and
The rectangular waveguide mouth 75 that first rectangular enclosure 72 communicates is provided with single ridged waveguides mouth 76 on the leading flank of the first rectangular waveguide 71,
Single ridged waveguides mouth 76 is connected to the first rectangular enclosure 72, the height phase of the height of single ridged waveguides mouth 76 and the first rectangular enclosure 72
Deng the bottom surface of single ridged waveguides mouth 76 and the bottom surface of the first rectangular enclosure 72 are in the same plane, the bottom surface of single ridged waveguides mouth 76
It is provided with the ridge ladder extended on 72 bottom surface of the first rectangular enclosure, ridge ladder includes being sequentially connected the first rectangle spine 77 and the
Two rectangle spine 78, the height of the first rectangle spine 77 are greater than the height of the second rectangle spine 78, the height of the first rectangle spine 77
The height less than the first rectangular enclosure 72 is spent, single ridged waveguides mouth 76 is used to connect the port of H-type single ridged waveguides power division network 5.
In the present embodiment, mode conversion layer 3 includes multiple 1-4 constant amplitudes being evenly spaced on phase power splitter 31,1-4 etc.
Width includes the second rectangular waveguide 311 with phase power splitter 31, is provided with the second rectangular enclosure 312 in the second rectangular waveguide 311, and second
The first matching partition 313 is respectively arranged in the middle part of the leading flank of rectangular enclosure 312 and trailing flank, the second rectangular enclosure 312
Be respectively arranged with the second matching partition 314 in the middle part of left side and right side, the upper surface of the second rectangular waveguide 311 be provided with
The two sides of the rectangular waveguide input port 315 that second rectangular enclosure 312 communicates, each second matching partition 314 are symmetrically arranged with square
Shape wave guide outlet 316, rectangular waveguide delivery outlet 316 extend to the second rectangular waveguide 311 from the bottom surface of the second rectangular enclosure 312
Bottom surface.
In the present embodiment, the center spacing positioned at two rectangular waveguide input ports 315 of the same side is W, wherein 0.75 λ0
<W<1.15λ0, λ0For the centre frequency of the working band of CTS flat plate array antenna.
In the present embodiment, radiating layer 2 includes the multiple face E ladder horns being evenly spaced on.
In the present embodiment, polarization layer 1 includes medium substrate, the first metal layer and second metal layer, and the first metal layer includes
It etches in medium substrate upper surface and in multiple first metal bands of periodic distribution, second metal layer includes etching in medium
Base lower surface and be in periodic distribution multiple second metal bands, the radiation in the direction of the second metal band and radiating layer 2
Direction is parallel, and the angle between the first metal band and the second metal band is 45 degree.
CTS flat plate array antenna of the invention is emulated using CST Electromagnetic Simulation tool.CTS plate of the invention
Input port return loss simulation curve figure of the array antenna in 71GHz to 76GHz is as shown in Figure 10, and CTS of the invention is flat
Input port return loss simulation curve figure of the plate array antenna in 81GHz to 86GHz CTS as shown in figure 11, of the invention
E-plane and H-plane pattern of the flat plate array antenna in 71GHz is as shown in figure 12.Analysis chart 10 it is found that the present invention 71GHz extremely
Return loss (S11) is better than -16dB in the entire frequency band of 76GHz；Analysis chart 11 it is found that the present invention in the entire frequency of 81GHz to 86GHz
It is better than -22dB with interior return loss (S11)；Analysis chart 12 it is found that in 71GHz frequency antenna E-plane and H-plane pattern minor lobe by
In -25dB, main lobe width is less than 2 degree.In conclusion the CTS flat plate array antenna of the invention echo in 71GHz to 86GHz
Loss is better than -16dB, covers the entire frequency range of E-band, and relative bandwidth reaches 20%；Antenna E-plane and H-plane pattern minor lobe is excellent
In -25dB, belong to Sidelobe scope.
Claims (5)
1. a kind of CTS flat plate array antenna, including polarization layer, radiating layer, mode conversion layer and the feedback set gradually from top to bottom
Power grid network layers, it is characterised in that the transmission network network layers include 4nA H-type single ridged waveguides power division network and waveguide magic T, n are big
In be equal to 0 integer,
As n=0, the waveguide magic T is arranged at the center of the H-type single ridged waveguides power division network；
As n >=1,4nA H-type single ridged waveguides power division network is uniformly distributed to form the 1st grade of feeding network of k row × k column
Array, wherein2 rows in the 1st grade of feeding network array × 2 column H-type single ridged waveguides power division network is made
For the 1st grade of H-type single ridged waveguides power division network unit, the 1st grade of feeding network array includes 4n-1A 1st grade of H-type list ridge ripple
Power division network unit is led, 4 H-type single ridged waveguides function subnettings in each 1st grade of H-type single ridged waveguides power division network unit
The midpoint of network passes through a H-type single ridged waveguides power division network connection；Connection 4n-1A 1st grade of H-type single ridged waveguides function subnetting
The H-type single ridged waveguides power division network at the midpoint of 4 H-type single ridged waveguides power division networks in network unit constitutes j row × j column the 2nd
Grade feeding network array, whereinBy 2 rows in the 2nd grade of feeding network array × 2 column H-type single ridged waveguides
For power division network as the 2nd grade of H-type single ridged waveguides power division network unit, the 2nd grade of feeding network array includes 4n-1A 2nd
Grade H-type single ridged waveguides power division network unit, 4 H-type lists in the 2nd grade of H-type single ridged waveguides power division network unit
The midpoint of ridge waveguide power division network passes through a H-type single ridged waveguides power division network connection；And so on, until only including 4 H-types
(n-1)th grade of H-type single ridged waveguides power division network unit of single ridged waveguides power division network is constituted, (n-1)th grade of H-type single ridged waveguides
The midpoint of 4 H-type single ridged waveguides power division networks in power division network unit connects also by a H-type single ridged waveguides power division network
It connects, and the waveguide magic T is arranged at the center of the H-type single ridged waveguides power division network；The 1st grade of feeding network array
In each H-type single ridged waveguides power division network four ports at be respectively arranged with single ridged waveguides-rectangular waveguide converter；
The single ridged waveguides-rectangular waveguide converter includes the first rectangular waveguide, is provided in first rectangular waveguide
First rectangular enclosure, the face E step is provided on the left of first rectangular enclosure, and the height of the face the E step is lower than institute
The height for the first rectangular enclosure stated, front side wall, rear wall and the left side of the face the E step and first rectangular enclosure
Wall connects, and the face H step is provided on the right side of first rectangular enclosure, and the face the H step and first rectangle are empty
The right side wall of chamber is connected with rear wall, and the height of the face the H step is equal with the height of the first rectangular enclosure, described
The upper surface of the first rectangular waveguide be provided with the rectangular waveguide mouth communicated with first rectangular enclosure, first square
Single ridged waveguides mouth is provided on the leading flank of shape waveguide, the single ridged waveguides mouth is connected to first rectangular enclosure, institute
The height for the single ridged waveguides mouth stated is equal with the height of the first rectangular enclosure, the bottom surface of the single ridged waveguides mouth and institute
The bottom surface for the first rectangular enclosure stated is in the same plane, the bottom surface of the single ridged waveguides mouth be provided with extend to it is described
Ridge ladder on first rectangular enclosure bottom surface, the ridge ladder include being sequentially connected the first rectangle spine and the second rectangular ridge
Beam, the first rectangular ridge depth of beam are greater than the second rectangular ridge depth of beam, the first rectangle spine
Height is less than the height of first rectangular enclosure, and the single ridged waveguides mouth is used to connect the H-type single ridged waveguides function
The port of subnetwork.
2. a kind of CTS flat plate array antenna according to claim 1, it is characterised in that the mode conversion layer includes more
A 1-4 constant amplitude being evenly spaced on includes the second rectangular waveguide, institute with phase power splitter with phase power splitter, the 1-4 constant amplitude
The second rectangular enclosure, the leading flank of second rectangular enclosure and the middle part of trailing flank are provided in the second rectangular waveguide stated
It is respectively arranged with the first matching partition, is respectively arranged with second in the middle part of the left side and right side of second rectangular enclosure
Partition is matched, it is defeated that the upper surface of second rectangular waveguide is provided with the rectangular waveguide communicated with second rectangular enclosure
The two sides of entrance, each second matching disc are symmetrically arranged with rectangular waveguide delivery outlet, the rectangular waveguide delivery outlet
The bottom surface of second rectangular waveguide is extended to from the bottom surface of second rectangular enclosure.
3. a kind of CTS flat plate array antenna according to claim 2, it is characterised in that two rectangular waves positioned at the same side
The center spacing for leading input port is W, wherein 0.75 λ0<W<1.15λ0, λ0For the center of the working band of CTS flat plate array antenna
Frequency.
4. a kind of CTS flat plate array antenna according to claim 1, it is characterised in that the radiating layer includes multiple equal
The even face the E ladder horn being spaced apart.
5. a kind of CTS flat plate array antenna according to claim 1, it is characterised in that the polarization layer includes medium base
Plate, the first metal layer and second metal layer, the first metal layer include etching in the medium substrate upper surface and being in
Multiple first metal bands of periodic distribution, the second metal layer include etch in the medium substrate lower surface and
In multiple second metal bands of periodic distribution, the radiation side in the direction of second metal band and the radiating layer
It is 45 degree to the angle between parallel, described the first metal band and second metal band.
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| CN108123220B (en) * | 2018-02-02 | 2024-02-13 | 苏州灵致科技有限公司 | Low-sidelobe waveguide slot array antenna |
| CN109037928B (en) | 2018-07-09 | 2020-08-04 | 宁波大学 | Ultra-wideband CTS (clear to send) flat array antenna |
| CN109687099B (en) * | 2018-12-20 | 2021-01-15 | 宁波大学 | Vehicle-mounted radar antenna |
| CN109755766B (en) * | 2018-12-29 | 2020-10-20 | 宁波大学 | CTS frequency-scanning antenna with large scanning frequency ratio |
| CN111585049B (en) * | 2020-05-18 | 2021-04-16 | 宁波大学 | Low-sidelobe flat plate array antenna |
| CN111585050B (en) * | 2020-05-18 | 2021-03-02 | 宁波大学 | Broadband flat array antenna |
| CN113488769B (en) * | 2020-06-30 | 2024-03-12 | 浙江大学 | Parallel plate waveguide power divider and CTS antenna |
| CN112018524B (en) * | 2020-07-09 | 2022-08-05 | 中国人民解放军战略支援部队信息工程大学 | Design method of single-port input arbitrary N-port output VICTS feed excitation layer |
| CN112467396B (en) * | 2020-11-17 | 2022-08-26 | 上海航天电子通讯设备研究所 | Novel broadband array antenna |
| CN114583429B (en) * | 2020-11-30 | 2024-04-16 | 京东方科技集团股份有限公司 | Waveguide conversion structure, waveguide feed network and antenna system |
| CN113437532B (en) * | 2021-04-06 | 2022-09-06 | 浙江大学 | CTS antenna based on multilayer hybrid waveguide power division structure |
| CN115117616B (en) * | 2022-08-25 | 2022-12-02 | 成都国恒空间技术工程股份有限公司 | VICTS antenna based on RGW structure |
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| US7061443B2 (en) * | 2004-04-01 | 2006-06-13 | Raytheon Company | MMW electronically scanned antenna |
| JP5219139B2 (en) * | 2008-10-24 | 2013-06-26 | 国立大学法人東京工業大学 | Waveguide slot array antenna, waveguide slot array antenna design method, and waveguide slot array antenna manufacturing method |
| CN103414027B (en) * | 2013-07-18 | 2015-08-19 | 北京遥测技术研究所 | A kind of wide band single pulse flat plate slot array antenna |
| CN103414030B (en) * | 2013-07-18 | 2015-08-19 | 北京遥测技术研究所 | A kind of wide band low profile flat plate slot array antenna |
| CN105098366A (en) * | 2015-09-09 | 2015-11-25 | 西安三维通信有限责任公司 | Ridge waveguide planar array antenna employing mechanical center feeding |
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