CN114039207B - High-integration series-fed circular polarization correction network and working method thereof - Google Patents
High-integration series-fed circular polarization correction network and working method thereof Download PDFInfo
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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
- H01Q3/267—Phased-array testing or checking devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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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
- H01Q15/242—Polarisation converters
- H01Q15/244—Polarisation converters converting a linear polarised wave into a circular polarised wave
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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
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Abstract
A high-integration series-feed type circular polarization correction network and a working method thereof belong to the technical field of phased array antennas and solve the problems that the traditional series-feed type correction network does not have a circular polarization forming function and is not suitable for a circular polarization phased array antenna system; the technical scheme of the invention structurally realizes the three-dimensional integration of the correction network and the circular polarization bridge, thereby reducing the number of connectors and cable assemblies, reducing feeder line loss, reducing volume, weight and cost and improving reliability; the dual circular polarization radiation and the series feed correction of the antenna are realized functionally at the same time; the circular polarization bridge is embedded in the rectangular hollow space of the correction medium plate, so that the separation design of the circular polarization bridge and the correction coupler is realized, the independent replacement of any circular polarization bridge can be realized, and the maintainability is improved; the method has the advantage of controllable coupling degree, and the purpose of regulating and controlling the coupling degree is achieved by regulating the size of the inclined coupling hole; and the coupling strip line structure is adopted to effectively isolate external interference.
Description
Technical Field
The invention belongs to the technical field of phased array antennas, and particularly relates to a high-integration series-fed circular polarization correction network and a working method thereof.
Background
In order to prevent the loss of polarization mismatch caused by faraday rotation effect when electromagnetic waves penetrate the ionosphere, the antenna is required to have circular polarization performance, and the same antenna array plane works simultaneously in a receiving mode and a transmitting mode, so that the antenna is required to have double circular polarization working capability.
The phased array antenna system must correct the phased array antenna system because of various reasons such as inconsistency of devices, manufacturing tolerance, assembly tolerance, etc., the initial amplitude and phase errors of each channel are necessary, that is, the initial amplitude-phase characteristics of each channel are accurately measured to obtain the error between the initial amplitude-phase characteristics and the ideal amplitude-phase distribution, and then the amplitude-phase distribution of each channel is adjusted to compensate, so that the whole antenna reaches the optimal technical state of the design requirement. Channel amplitude and phase correction is achieved by a correction network. Thus for a circularly polarized phased array antenna system, a set of correction networks and a set of circularly polarized networks are required. However, the correction networks designed in the prior art cannot satisfy both the functions of correction and circular polarization.
The correction network designed in the prior art has two implementation modes, namely series feed type and parallel feed type.
(1) The parallel feed type correction network has the advantages of planarization, symmetrical structure, good consistency of coupling degree of each channel, large coupling degree design range and the like, but has the defects of complex structure, large size and difficult integration.
(2) The series feed type correction network is used for integrally designing the antenna unit and the correction network, the correction network couples radio frequency signals on the antenna feed line to a microstrip line of the correction network through an inclined 45-degree coupling gap, and the correction network has the characteristics of high integration level, light weight, simple structure and the like, but has the defects of high section, poor maintainability, easiness in external interference of the correction line and the like, for example, the document Ku-band integrated array antenna design with correction function (Feng Sen, jin Mouping, 2015 national microwave millimeter wave conference).
Disclosure of Invention
The invention aims to design a high-integration series-fed circular polarization correction network so as to solve the problems that the traditional series-fed circular polarization correction network does not have a circular polarization forming function and is not suitable for a circular polarization phased array antenna system.
The invention solves the technical problems through the following technical scheme:
A high integration series fed circular polarization correction network comprising: a plurality of circular polarization correction network units (1), 2 correction connectors (15), 1 coupling strip line (14); the plurality of circular polarization correction network units (1) are linearly arranged in the same direction at equal intervals in a traveling wave series feed mode to form a strip rectangular dielectric plate, a coupling strip line (14) is etched in the strip rectangular dielectric plate along the length direction of the strip rectangular dielectric plate, two ends of the coupling strip line (14) are respectively connected with correction connectors (15), and 2 correction connectors (15) are respectively connected to a matching load and a correction extension; the circular polarization correction network unit (1) comprises: a multilayer correction medium plate (2) and a circular polarization bridge (10); the first layer of correction medium plates (20), the metal floors (21) of the first layer of correction medium plates, the second layer of correction medium plates (22), the third layer of correction medium plates (23) and the metal floors (24) of the third layer of correction medium plates are sequentially stacked from top to bottom to form a rectangular multilayer correction medium plate (2); rectangular hollows (25) are formed in the multilayer correction medium plates (2), the size of each rectangular hollowing (25) is matched with that of each circular polarization bridge (10), each circular polarization bridge (10) is embedded in each rectangular hollowing, and each rectangular hollowing penetrates through the first layer correction medium plate (20), the metal floor (21) of the first layer correction medium plate, the second layer correction medium plate (22) and the third layer correction medium plate (23); a through arm microstrip line (11) and a coupling arm microstrip line (12) are etched on the upper surface of the first layer of correction dielectric plate (20) along the rear side of the rectangular width direction, and the through arm microstrip line (11) and the coupling arm microstrip line (12) are correspondingly connected with a through arm and a coupling arm of the circular polarization bridge (10) respectively; two coupling microstrip lines (16) are etched on the front side of the upper surface of the first layer of correction dielectric plate (20) along the rectangular width direction, and the two coupling microstrip lines (16) are respectively and correspondingly connected with the input end and the isolation end of the circular polarization bridge (10); the straight-through arm microstrip line (11) and the coupling arm microstrip line (12) are respectively connected with two linear polarization antennas, and the two coupling microstrip lines (16) are respectively connected with a transmitting filter and a receiving filter; the coupling strip line (14) is etched on the upper surface of the third layer of correction dielectric plate (23) along the length direction of the rectangle, the coupling strip line (14) and the coupling microstrip line (16) are mutually orthogonal in space position, and two symmetrical oblique coupling holes (17) are formed in the metal floor (21) of the first layer of correction dielectric plate in the space position between the coupling strip line (14) and the coupling microstrip line (16) which are mutually orthogonal; the oblique coupling hole (17) couples the radio frequency signal of the coupling microstrip line (16) to the coupling strip line (14), and then the radio frequency signal is transmitted to the correction extension through the coupling strip line (14).
The traditional series feed correction network design does not have a circular polarization function, and when the series feed correction network design is applied to a circular polarization phased array radar system, a circular polarization network is added outside the correction network, so that the size, the weight and the feeder loss of the system are increased. The technical scheme of the invention structurally realizes the three-dimensional integration of the correction network and the circular polarization bridge, thereby reducing the number of connectors and cable assemblies, reducing feeder line loss, reducing volume, weight and cost and improving reliability; the dual circular polarization radiation and the series feed correction of the antenna are realized functionally at the same time; the circular polarization bridge is embedded in the rectangular hollow space of the correction medium plate, so that the separation design of the circular polarization bridge and the correction coupler is realized, the independent replacement of any circular polarization bridge can be realized, and the maintainability is improved; the method has the advantage of controllable coupling degree, and the purpose of regulating and controlling the coupling degree is achieved by regulating the size of the inclined coupling hole; by adopting the coupling strip line structure, external interference can be effectively isolated, and the reliability is improved.
As a further improvement of the technical scheme of the invention, the working process of the series-fed circular polarization correction network is as follows:
① Circular polarization process: the horizontal polarization signal and the vertical polarization signal are respectively input into a through port and a coupling port of a circular polarization bridge (10) through a through arm microstrip line (11) and a coupling arm microstrip line (12), and are synthesized by the circular polarization bridge (10), and then are connected with a transmitting filter and a receiving filter through two coupling microstrip lines (16) to form a transmitting left-hand circular polarization and a receiving right-hand circular polarization;
② The correction process comprises the following steps: the coupling microstrip line (16) transmits the energy of the circular polarization bridge (10), the collected energy is coupled to the coupling strip line (14) through the inclined coupling hole (17), the coupling strip line (14) is connected with the correction connector (15), one correction connector (13) is connected to the correction extension, the energy is transmitted to the correction extension, the correction extension obtains amplitude and phase data of the correction network, the digital beam forming computer compares the data with original reference data, thus obtaining amplitude and phase correction codes, and amplitude and phase correction is completed.
As a further improvement of the technical scheme of the invention, the circular polarization bridge (10) is a 90-degree directional coupler.
As a further improvement of the technical scheme of the invention, a plurality of metallized holes are formed on both sides of the coupling strip line (14) and the long side of the long rectangular dielectric plate.
As a further improvement of the technical solution of the present invention, the spacing between the plurality of the circular polarization correcting network units (1) and between the two coupling microstrip lines (16) of each circular polarization correcting network unit (1) is 0.063 λ 0, wherein λ 0 is the center frequency free space wavelength.
As a further improvement of the technical scheme of the invention, the matching load adopts a sheet type load.
The working method of the series fed circular polarization correction network with high integration level comprises a circular polarization process and a correction process, wherein the circular polarization process comprises the following steps of: the horizontal polarization signal and the vertical polarization signal are respectively input into a through port and a coupling port of a circular polarization bridge (10) through a through arm microstrip line (11) and a coupling arm microstrip line (12), and are synthesized by the circular polarization bridge (10), and then are connected with a transmitting filter and a receiving filter through two coupling microstrip lines (16) to form a transmitting left-hand circular polarization and a receiving right-hand circular polarization; the correction process comprises the following steps: the coupling microstrip line (16) transmits the energy of the circular polarization bridge (10), the collected energy is coupled to the coupling strip line (14) through the inclined coupling hole (17), the coupling strip line (14) is connected with the correction connector (15), one correction connector (13) is connected to the correction extension, the energy is transmitted to the correction extension, the correction extension obtains amplitude and phase data of the correction network, the digital beam forming computer compares the data with original reference data, thus obtaining amplitude and phase correction codes, and amplitude and phase correction is completed.
The invention has the advantages that:
The technical scheme of the invention structurally realizes the three-dimensional integration of the correction network and the circular polarization bridge, thereby reducing the number of connectors and cable assemblies, reducing feeder line loss, reducing volume, weight and cost and improving reliability; the dual circular polarization radiation and the series feed correction of the antenna are realized functionally at the same time; the circular polarization bridge is embedded in the rectangular hollow space of the correction medium plate, so that the separation design of the circular polarization bridge and the correction coupler is realized, the independent replacement of any circular polarization bridge can be realized, and the maintainability is improved; the method has the advantage of controllable coupling degree, and the purpose of regulating and controlling the coupling degree is achieved by regulating the size of the inclined coupling hole; by adopting the coupling strip line structure, external interference can be effectively isolated, and the reliability is improved.
Drawings
FIG. 1 is a front perspective view of a high integration series-fed circular polarization correction network according to an embodiment of the present invention;
FIG. 2 is a front perspective view of a circularly polarized correction network element according to an embodiment of the present invention;
FIG. 3 is an exploded view of a circularly polarized correction network element according to an embodiment of the present invention;
FIG. 4 is a chart showing the voltage standing wave ratio test of the total port and the split port of the high-integration series-fed circular polarization correction network according to the embodiment of the invention;
FIG. 5 is a coupling degree test chart of a high-integration series-fed circular polarization correction network according to an embodiment of the present invention;
fig. 6 is an insertion loss test chart of a high-integration series-fed circular polarization correction network according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The technical scheme of the invention is further described below with reference to the attached drawings and specific embodiments:
Example 1
As shown in fig. 1, a high-integration series-fed circular polarization correction network includes: 8 circularly polarized correction network elements 1,2 correction connectors 15, 1 coupling strip line 14; the 8 circular polarization correction network units are linearly arranged in the same direction at equal intervals in a traveling wave series feed mode to form a long rectangular dielectric plate, the coupling strip line 14 is etched in the long rectangular dielectric plate along the length direction of the long rectangular dielectric plate, and two ends of the coupling strip line 14 are respectively connected with correction connectors 15; a plurality of metallized holes are provided along both sides of the coupling strip line 14 and along the long sides of the elongated rectangular dielectric plate. In order to avoid the occurrence of a large reflection coefficient superposition singular point in the band, the distance between the 8 circular polarization correction network units 1 and between the two coupling microstrip lines 16 of each circular polarization correction network unit 1 is 0.063 lambda 0, wherein lambda 0 is the free space wavelength of the center frequency, and the series-fed circular polarization correction network does not generate a large reflection coefficient in the working frequency band.
As shown in fig. 2-3, the circular polarization correcting network unit 1 includes: a multilayer correction dielectric plate 2, a circular polarization bridge 10; the circular polarization bridge 10 is a 90-degree directional coupler; an embedded bridge of Chengdu Tagn company is adopted, and the model is TGD-E2055; the first layer of correction medium plates 20, the metal floors 21 of the first layer of correction medium plates, the second layer of correction medium plates 22, the third layer of correction medium plates 23 and the metal floors 24 of the third layer of correction medium plates are sequentially laminated together from top to bottom to form a rectangular multilayer correction medium plate 2; rectangular hollows 25 are formed in the multilayer correction medium plates 2, the size of each rectangular hollowing 25 is matched with that of the circular polarization bridge 10, the circular polarization bridge 10 is embedded in the rectangular hollows, and the rectangular hollows penetrate through the first layer correction medium plates 20, the metal floors 21 of the first layer correction medium plates, the second layer correction medium plates 22 and the third layer correction medium plates 23.
A through arm microstrip line 11 and a coupling arm microstrip line 12 are etched on the upper surface of the first layer of correction dielectric plate 20 along the rear side of the rectangular width direction, and the through arm microstrip line 11 and the coupling arm microstrip line 12 are respectively and correspondingly connected with the through arm and the coupling arm of the circular polarization bridge 10; two coupling microstrip lines 16 are etched on the front side of the upper surface of the first layer of correction dielectric plate 20 along the rectangular width direction, and the two coupling microstrip lines 16 are respectively and correspondingly connected with the input end and the isolation end of the circular polarization bridge 10; the straight-through arm microstrip line 11 and the coupling arm microstrip line 12 are respectively connected with two linear polarization antennas, and the two coupling microstrip lines 16 are respectively connected with a transmitting filter and a receiving filter to form transmitting left-hand circular polarization and receiving right-hand circular polarization.
The coupling strip line 14 is etched on the upper surface of the third layer of correction dielectric plate 23 along the length direction of the rectangle, the coupling strip line 14 and the coupling microstrip line 16 are mutually orthogonal in space position, and two symmetrical oblique coupling holes 17 are formed on the metal floor 21 of the first layer of correction dielectric plate in the space position between the coupling strip line 14 and the coupling microstrip line 16 mutually orthogonal; the two ends of the coupling strip line 14 are respectively connected with correction connectors 15, and the two correction connectors 15 are respectively connected to a matching load and a correction extension machine, wherein the matching load adopts a sheet type load and ensures good grounding; the radio frequency signals of the coupling microstrip line 16 are coupled to the coupling strip line 14 through the inclined coupling hole 17, and then transmitted to the correction extension through the coupling strip line 14, and the purpose of regulating and controlling the coupling degree is achieved by regulating the size of the inclined coupling hole 17.
The working process and working principle of the invention are as follows:
① Circular polarization process: the horizontal polarization and vertical polarization signals are respectively input into a through port and a coupling port of the circular polarization bridge 10 through the through arm microstrip line 11 and the coupling arm microstrip line 12, are synthesized by the circular polarization bridge 10, and are connected with a transmitting filter and a receiving filter through the two coupling microstrip lines 16 to form transmitting left-hand circular polarization and receiving right-hand circular polarization.
② The correction process comprises the following steps: the coupling microstrip line 16 transmits the energy of the circular polarization bridge 10 and couples the collected energy to the coupling strip line 14 through the oblique coupling hole 17, the coupling strip line 14 is connected with the correction connector 15, one of the correction connectors 13 is connected to the correction extension, the energy is transmitted to the correction extension, the correction extension obtains the amplitude and phase data of the correction network, the digital beam forming computer compares the data with the original reference data, thus obtaining amplitude and phase correction codes, and the amplitude and phase correction is completed.
Fig. 4 shows a measured plot of the total port and split port standing waves for this embodiment, indicating that the port standing waves are better than 1.3 at the operating band of the circular polarization correction network at about 26% of the relative bandwidth.
The coupling degree test results of this embodiment are shown in fig. 5, where the coupling degree of the circular polarization correction network is about-37 dB to-41 dB in the operating band with a relative bandwidth of about 26%.
Fig. 6 shows the loss test results of this embodiment, the circular polarization recovery network having an insertion loss better than 0.3dB in the operating band of about 26% of the relative bandwidth.
The traditional series feed correction network design does not have a circular polarization function, and when the series feed correction network design is applied to a circular polarization phased array radar system, a circular polarization network is added outside the correction network, so that the size, the weight and the feeder loss of the system are increased. The circular polarization bridge is embedded in the rectangular hollow space of the correction medium plate, and three-dimensional integration of the correction network and the circular polarization bridge is realized structurally, so that the number of connectors and cable components is reduced, the feeder loss is reduced, the volume, the weight and the cost are reduced, and meanwhile, the reliability is improved; the dual circular polarization radiation and the series feed correction of the antenna are realized functionally at the same time; the device has the advantages of small volume, light weight, low cost, small loss, easy maintenance, controllable coupling degree and the like. The invention embeds the circular polarization bridge in the rectangular hollow space of the correction medium plate, realizes the separation design of the circular polarization bridge and the correction coupler, can realize independent replacement of any circular polarization bridge and improves maintainability. The invention has the advantage of controllable coupling degree. The correction coupler can achieve the purpose of adjusting and controlling the coupling degree by adjusting the size of the inclined hole. The invention adopts a coupling strip line structure, can effectively isolate external interference and improves reliability. The invention can be used for realizing circularly polarized receiving and transmitting beams and correcting channel inconsistency in a phased array antenna system.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A high integration series fed circular polarization correction network comprising: a plurality of circular polarization correction network units (1), 2 correction connectors (15), 1 coupling strip line (14); the plurality of circular polarization correction network units (1) are linearly arranged in the same direction at equal intervals in a traveling wave series feed mode to form a strip rectangular dielectric plate, a coupling strip line (14) is etched in the strip rectangular dielectric plate along the length direction of the strip rectangular dielectric plate, two ends of the coupling strip line (14) are respectively connected with correction connectors (15), and 2 correction connectors (15) are respectively connected to a matching load and a correction extension; the circular polarization correction network unit (1) comprises: a multilayer correction medium plate (2) and a circular polarization bridge (10); the first layer of correction medium plates (20), the metal floors (21) of the first layer of correction medium plates, the second layer of correction medium plates (22), the third layer of correction medium plates (23) and the metal floors (24) of the third layer of correction medium plates are sequentially stacked from top to bottom to form a rectangular multilayer correction medium plate (2); rectangular hollows (25) are formed in the multilayer correction medium plates (2), the size of each rectangular hollowing (25) is matched with that of each circular polarization bridge (10), each circular polarization bridge (10) is embedded in each rectangular hollowing, and each rectangular hollowing penetrates through the first layer correction medium plate (20), the metal floor (21) of the first layer correction medium plate, the second layer correction medium plate (22) and the third layer correction medium plate (23); a through arm microstrip line (11) and a coupling arm microstrip line (12) are etched on the upper surface of the first layer of correction dielectric plate (20) along the rear side of the rectangular width direction, and the through arm microstrip line (11) and the coupling arm microstrip line (12) are correspondingly connected with a through arm and a coupling arm of the circular polarization bridge (10) respectively; two coupling microstrip lines (16) are etched on the front side of the upper surface of the first layer of correction dielectric plate (20) along the rectangular width direction, and the two coupling microstrip lines (16) are respectively and correspondingly connected with the input end and the isolation end of the circular polarization bridge (10); the straight-through arm microstrip line (11) and the coupling arm microstrip line (12) are respectively connected with two linear polarization antennas, and the two coupling microstrip lines (16) are respectively connected with a transmitting filter and a receiving filter; the coupling strip line (14) is etched on the upper surface of the third layer of correction dielectric plate (23) along the length direction of the rectangle, the coupling strip line (14) and the coupling microstrip line (16) are mutually orthogonal in space position, and two symmetrical oblique coupling holes (17) are formed in the metal floor (21) of the first layer of correction dielectric plate in the space position between the coupling strip line (14) and the coupling microstrip line (16) which are mutually orthogonal; the oblique coupling hole (17) couples the radio frequency signal of the coupling microstrip line (16) to the coupling strip line (14), and then the radio frequency signal is transmitted to the correction extension through the coupling strip line (14).
2. The high-integration series-fed circular polarization calibration network according to claim 1, wherein the series-fed circular polarization calibration network comprises the following working procedures:
① Circular polarization process: the horizontal polarization signal and the vertical polarization signal are respectively input into a through port and a coupling port of a circular polarization bridge (10) through a through arm microstrip line (11) and a coupling arm microstrip line (12), and are synthesized by the circular polarization bridge (10), and then are connected with a transmitting filter and a receiving filter through two coupling microstrip lines (16) to form a transmitting left-hand circular polarization and a receiving right-hand circular polarization;
② The correction process comprises the following steps: the coupling microstrip line (16) transmits the energy of the circular polarization bridge (10), the collected energy is coupled to the coupling strip line (14) through the inclined coupling hole (17), the coupling strip line (14) is connected with the correction connector (15), one correction connector (13) is connected to the correction extension, the energy is transmitted to the correction extension, the correction extension obtains amplitude and phase data of the correction network, the digital beam forming computer compares the data with original reference data, thus obtaining amplitude and phase correction codes, and amplitude and phase correction is completed.
3. A highly integrated series-fed circular polarization recovery network according to claim 1, wherein the circular polarization bridge (10) is a 90 ° directional coupler.
4. The high-integration series-fed circular polarization calibration network according to claim 1, wherein a plurality of metallized holes are formed on both sides of the coupling strip line (14) and on the long side of the rectangular long dielectric plate.
5. A highly integrated series-fed circular polarization recovery network according to claim 1, wherein the spacing between the plurality of circular polarization recovery network elements (1) and between the two coupled microstrip lines (16) of each circular polarization recovery network element (1) is 0.063 λ 0, where λ 0 is the center frequency free space wavelength.
6. The high integration series-fed circular polarization recovery network of claim 1, wherein said matched load is a sheet load.
7. A working method applied to the high-integration series-fed circular polarization correction network as claimed in any one of claims 1 to 6, and characterized by comprising a circular polarization process and a correction process; the circular polarization process comprises the following steps: the horizontal polarization signal and the vertical polarization signal are respectively input into a through port and a coupling port of a circular polarization bridge (10) through a through arm microstrip line (11) and a coupling arm microstrip line (12), and are synthesized by the circular polarization bridge (10), and then are connected with a transmitting filter and a receiving filter through two coupling microstrip lines (16) to form a transmitting left-hand circular polarization and a receiving right-hand circular polarization; the correction process comprises the following steps: the coupling microstrip line (16) transmits the energy of the circular polarization bridge (10), the collected energy is coupled to the coupling strip line (14) through the inclined coupling hole (17), the coupling strip line (14) is connected with the correction connector (15), one correction connector (13) is connected to the correction extension, the energy is transmitted to the correction extension, the correction extension obtains amplitude and phase data of the correction network, the digital beam forming computer compares the data with original reference data, thus obtaining amplitude and phase correction codes, and amplitude and phase correction is completed.
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| 一种Q 波段校正网络的设计;高初;《2018年全国微波毫米波会议》;20180506;全文 * |
| 大口径天线校正网络中功率和相位分析;戈海清;冯文文;王惠生;赖清华;;雷达科学与技术;20170215(第01期);全文 * |
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