CN114050391B - Broadband arbitrary power distribution ratio H-plane waveguide power divider - Google Patents
Broadband arbitrary power distribution ratio H-plane waveguide power divider Download PDFInfo
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- CN114050391B CN114050391B CN202111278173.6A CN202111278173A CN114050391B CN 114050391 B CN114050391 B CN 114050391B CN 202111278173 A CN202111278173 A CN 202111278173A CN 114050391 B CN114050391 B CN 114050391B
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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
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The broadband arbitrary power distribution ratio H-plane waveguide power divider disclosed by the invention has the advantages of simple structure, wide working frequency band, and good amplitude balance and phase balance. The invention is realized by the following technical scheme: the flat waveguide is transitionally matched with a standard waveguide by an M-grade H-surface stepped waveguide, the flat waveguide is transitionally matched with the standard waveguide by an N-grade H-surface stepped waveguide, a metal cushion block embedded between the butt joint surfaces of the flat waveguide and an inverse standard waveguide is terminated by a matching boss embedded in an ┎ -shaped right-angle notch below the end surface of the flat waveguide, a necking boss on the fixed end of the T-arm flat waveguide is symmetrical about the butt joint surface of the flat waveguide and the inverse standard waveguide, the flat waveguide, the inverse standard waveguide and the T-arm flat waveguide form a T-shaped branch waveguide, power distribution of any power ratio output by two paths of the T-shaped branch waveguide is obtained by different arm heights, impedance discontinuity is matched by the metal cushion block, the matching boss and the necking boss, and good standing wave coefficient, amplitude and phase balance are obtained.
Description
Technical Field
The invention belongs to the field of microwave/millimeter wave, and particularly relates to a signal conversion transmission technology which is mainly applied to a solid-state power amplifier of a satellite communication and measurement and control system.
Background
Power splitters are the most common passive devices used to split the input signal power into equal or unequal power outputs. In a microwave circuit, a power divider is required to divide power into two or more paths according to a certain ratio. The power divider is used in turn as a power combiner for combining multiple signal energies into one output, so that the power divider/combiner is usually referred to as power divider for shortA device. The power divider is applied to a microwave solid-state amplifier, can combine a plurality of signals into an output signal with higher power, is a key microwave component of a solid-state transmitter, and the design quality of the power divider is directly related to the performance quality of the solid-state transmitter, such as efficiency, amplitude-frequency characteristics and the like. The design of the multi-path power divider can be divided into two types: the first type is that one path of signal is divided into multiple paths for outputting at one time through a structure; the second type is to divide a signal into multiple outputs successively through a series of one-to-two structures. The number of power branches in a power divider of the second type is usually 2 n The power divider usually adopts 3dB power divider cascade connection, and has the advantages of simple structure and simple and convenient design, but the problems of overlarge volume and increased cost are often brought because the number of power dividing paths is exponentially multiplied, and the requirements of small volume and low cost of the solid-state power amplifier are higher and higher but not 2 n The power divider gradually becomes a research focus, and the ratio of any power distribution to the power divider is not 2 n The key technology of the power divider. However, the problem of narrow bandwidth and poor amplitude phase balance of the current power divider with arbitrary power distribution ratio can result in large insertion loss and low synthesis efficiency of the power divider, and waste of power resources is caused.
Disclosure of Invention
In order to solve the problems of narrow bandwidth and poor amplitude phase balance degree of the power divider with arbitrary power distribution ratio, the invention provides the H-plane waveguide power divider with the arbitrary power distribution ratio of the broadband, which has the advantages of simple structure, wide working frequency band, good amplitude balance and phase balance, good standing-wave ratio and convenience for integration into other systems.
The technical scheme adopted by the invention is as follows: a broadband arbitrary power distribution ratio H-plane waveguide power divider comprises: the width of two arms is the same, and the inverted output standard waveguide 6 and the flat waveguide 8 that link to each other back to back orthogonalize and link to each other on the T arm flat waveguide 7 of the butt joint face of inverted output standard waveguide 6, flat waveguide 8, form three port T type branch waveguide, its characterized in that: the flat waveguide 8 is transitionally matched with the second standard waveguide 5 by an M-level H-surface stepped waveguide 10, the T-arm flat waveguide 7 is transitionally matched with the first standard waveguide 4 by an N-level H-surface stepped waveguide 9, a metal cushion block 11 embedded between the butt joint surfaces of the flat waveguide 8 and the inverted output standard waveguide 6, the end connection is carried out through a matching boss 12 embedded in an ┎ -shaped right-angle notch below the end face of the flat waveguide 8, a necking boss 13 on the fixed end of the T-arm flat waveguide 7 is symmetrical about the butt joint face of the flat waveguide 8 and the inverted output standard waveguide 6, the power distribution of the T-shaped branched waveguide with any power ratio of two-path output is obtained by the flat waveguide 8, the inverted output standard waveguide 6 and the T-arm flat waveguide 7 according to different arm heights, impedance discontinuity is matched through the metal cushion block 11, the matching boss 12 and the necking boss 13, so that good standing wave coefficient, amplitude and phase balance degree are obtained, wherein M, N is a natural number not less than 1.
Compared with the prior art, the invention has the following beneficial effects:
the invention adopts the flat waveguide 8, the inverted output standard waveguide 6 connected with the flat waveguide, and the T-arm flat waveguide 7 orthogonally connected with the butt joint surface of the flat waveguide 8 and the inverted output standard waveguide 6 to form the H-surface T-shaped branch waveguide, all ports are in the same plane, the flat waveguide 8, the output inverted standard waveguide 6 and the T-arm flat waveguide 7 are in coplanar connection through one H surface, a cavity is split and processed from the coplanar H surface, and the structure is simple and compact, the size is small, and the weight is light.
According to the invention, power distribution of any power ratio of two paths of output of the T-shaped branch waveguide is obtained through different arm heights of the flat waveguide 8, the inverted output standard waveguide 6 and the T-arm flat waveguide 7, and stepped impedance matching brought by different height differences has the advantage of bandwidth expansion; meanwhile, the stepped impedance discontinuity of the T-arm flat waveguide 7, the flat waveguide 8 and the output inverse standard waveguide 6 is matched through the metal cushion block 11 and the matching boss 12, and the working frequency band is wide. The necking boss 13 matches the impedance discontinuity at the waveguide junction to obtain good standing wave coefficient and amplitude and phase balance. The multistage H-surface stepped waveguide 9 and the H-surface stepped waveguide 10 transition the T-arm flat waveguide 7 and the flat waveguide 8 to the first standard waveguide 4 and the second standard waveguide 5 in a wider working frequency band, so that the good amplitude balance and phase balance are kept, and the cascade connection with a system is facilitated.
Compared with the traditional unequal power divider, the invention can obviously expand the working bandwidth and has good input-output standing wave ratio.
Drawings
FIG. 1 is a schematic diagram of a broadband arbitrary power distribution ratio H-plane waveguide power divider according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a two-to-one power distribution ratio H-plane waveguide power divider S parameter;
fig. 4 is a curve of phase balance degree of an output port of an H-plane waveguide power divider with a two-to-one power distribution ratio along with frequency variation;
the waveguide coupler comprises a main waveguide input port, a branch arm flat waveguide output port, a branch arm inverted waveguide output port, a first standard waveguide, a second standard waveguide and an inverted output standard waveguide, wherein 1 is the main waveguide input port, 2 is the branch arm flat waveguide output port, 3 is the branch arm inverted waveguide output port, 4 is the first standard waveguide, 5 is the second standard waveguide and 6 is the inverted output standard waveguide; 7 is a T-arm flat waveguide, and 8 is a flat waveguide; 9 is an N-level H-surface step waveguide; 10 is an M-level H-surface step waveguide, 11 is a metal cushion block, 12 is a matching boss, and 13 is a necking boss.
In order to facilitate understanding of the technical contents of the present invention by those skilled in the art, the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
Refer to FIGS. 1-2. In an exemplary preferred embodiment described below, a broadband arbitrary power division ratio H-plane waveguide power divider includes: the width of two arms is the same, and the inverted output standard waveguide 6 and the flat waveguide 8 that link to each other back to back orthogonalize and link to each other on the T arm flat waveguide 7 of the butt joint face of inverted output standard waveguide 6, flat waveguide 8, form three port T type branch waveguide, its characterized in that: the flat waveguide 8 is transitionally matched with a second standard waveguide 5 by an M-level H-surface stepped waveguide 10, the T-arm flat waveguide 7 is transitionally matched with a first standard waveguide 4 by an N-level H-surface stepped waveguide 9, a metal cushion block 11 embedded between the butt joint surfaces of the flat waveguide 8 and the inverted output standard waveguide 6 is terminated by a matching boss 12 embedded in an ┎ -shaped right-angle notch below the end surface of the flat waveguide 8, a necking boss 13 on the fixed end of the T-arm flat waveguide 7 is symmetrical about the butt joint surface of the flat waveguide 8 and the inverted output standard waveguide 6, the flat waveguide 8, the inverted output standard waveguide 6 and the T-arm flat waveguide 7 obtain power distribution of any power ratio of two paths of output of the T-type branch waveguide at different arm heights, and impedance discontinuity is matched by the metal cushion block 11, the matching boss 12 and the necking boss 13 to obtain good standing wave coefficient, amplitude and phase balance, wherein M, N is a natural number more than or equal to 1.
In an alternative embodiment, the necking boss 13 is symmetrical about the butt interface of the flat waveguide 8, the inverted output standard waveguide 6. And the input standard waveguide and the output standard waveguide adopt a standard BJ320 waveguide.
In an alternative embodiment, the N-level H-plane step waveguide 9 and the M-level H-plane step waveguide 10 may be two-level steps, and the power divider is a two-to-one power dividing ratio power divider. An inverted output standard waveguide 6 connected with the flat waveguide 8 and a T-arm flat waveguide 7 orthogonally connected with the butt joint surface of the flat waveguide 8 and the inverted output standard waveguide 6 form an H-surface T-shaped branch waveguide. The flat waveguide 8, the output inverted output standard waveguide 6 and the T-arm flat waveguide 7 are in coplanar connection through an H surface on one side, and the cavity is split and processed from the coplanar H surface.
The three-port T-shaped branch waveguide is divided into a main waveguide input port 1, a branch arm flat waveguide output port 2 and a branch arm reversed-phase waveguide output port 3 which are arranged at the tail end of a T-arm flat waveguide 7. When a signal is input from the main waveguide input port 1 in a TE10 mode, the branch arm flat waveguide output port 2 and the branch arm inverted waveguide output port 3 output in-phase waves with two to one amplitudes.
When signals are input from the branch arm flat waveguide output end 2 and the branch arm reversed-phase waveguide output port 3 in the same phase according to a two-to-one power ratio in a TE10 mode, the main waveguide input port 1 outputs a maximum power signal, the output power is the sum of the powers of the branch arm flat waveguide output end 2 and the branch arm reversed-phase waveguide output port 3, and traveling waves are presented in the main waveguide.
When signals are input from the branch arm flat waveguide output end 2 and the branch arm reversed-phase waveguide output port 3 in a two-to-one power ratio in a reverse phase mode in a TE10 mode, the main waveguide input port 1 outputs a minimum power signal, and the output power is equal to the power of the reversed-phase waveguide output port 3 and is half of the power of the branch arm flat waveguide output end 2.
Refer to FIGS. 3-4. As can be seen from fig. 3, the two-to-one power splitting ratio is wider than the operating frequency band of the H-plane waveguide power splitter, and has good standing wave coefficient and amplitude balance. As can be seen from fig. 4, the two output ports have good phase consistency in a wider frequency band.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (9)
1. A broadband arbitrary power distribution ratio H-plane waveguide power divider comprises: the width of two arms is the same, and negative phase output standard waveguide (6) and flat waveguide (8) that link to each other back to back, quadrature link on negative phase output standard waveguide (6), flat waveguide (8) butt joint face's T arm flat body waveguide (7), form three port H face T type branch waveguide, its characterized in that: all ports are in the same plane, the flat waveguide (8) and the inverted output standard waveguide (6) are in coplanar connection with the T-arm flat waveguide (7) through one H surface, a cavity is split from the coplanar H surface, power distribution is realized in the direction of a parallel electric field, the integrity of a power line is maintained, the flat waveguide (8) is in transition matching with the second standard waveguide (5) through an M-level H surface stepped waveguide (10), the T-arm flat waveguide (7) is in transition matching with the first waveguide (4) through an N-level H surface stepped waveguide (9), a metal cushion block (11) embedded between the butt-joint surfaces of the flat waveguide (8) and the inverted output standard waveguide (6) is in end connection through a matching boss (12) embedded in an ┎ -shaped right-angle notch below the end surface of the flat waveguide (8), and the fixed end of the inverted output standard waveguide (6) on the necking boss (13) on the T-arm flat waveguide (7) is symmetrical about the butt-joint surfaces of the flat waveguide (8) and the inverted output standard waveguide (6), the planar waveguide (8), the inverted output standard waveguide (6) and the T-arm planar waveguide (7) obtain power distribution of any power ratio of two paths of output of the T-shaped branch waveguide at different arm heights, bandwidth is expanded through step impedance matching brought by different height differences, impedance discontinuity is matched through the metal cushion block (11), the matching boss (12) and the necking boss (13), and good standing wave coefficient, amplitude and phase balance are obtained, wherein M, N is a natural number larger than or equal to 1.
2. The broadband arbitrary power splitting ratio H-plane waveguide power divider of claim 1, wherein: the necking lug boss (13) is symmetrical about the butt joint surface of the flat waveguide (8) and the inverted output standard waveguide (6).
3. The broadband arbitrary power division ratio H-plane waveguide power divider as claimed in claim 1, wherein: the three-port T-shaped branch waveguide is divided into a main waveguide input port (1), a branch arm flat waveguide output port (2) and a branch arm reversed-phase waveguide output port (3) on the tail end of a T-arm flat waveguide (7).
4. The broadband arbitrary power division ratio H-plane waveguide power divider as claimed in claim 3, wherein: the main waveguide input port (1) outputs one path of input signals to different-amplitude homophase waves through the branch arm flat waveguide output port (2) and the branch arm reversed-phase waveguide output port (3).
5. The broadband arbitrary power division ratio H-plane waveguide power divider as claimed in claim 1, wherein: and a metal cushion block (11) embedded between the butt joint surfaces of the flat waveguide (8) and the inverted output standard waveguide (6) is terminated through a matching boss (12) embedded in an ┎ -shaped right-angle notch below the end surface of the flat waveguide (8).
6. The broadband arbitrary power division ratio H-plane waveguide power divider as claimed in claim 1, wherein: the N-level H-surface step waveguide (9) and the M-level H-surface step waveguide (10) are step waveguides with the step number not less than 1.
7. The broadband arbitrary power division ratio H-plane waveguide power divider as claimed in claim 1, wherein: an inverted output standard waveguide (6) connected with the flat waveguide (8), and a T-arm flat waveguide (7) orthogonally connected with the butt joint surface of the flat waveguide (8) and the inverted standard waveguide (6) form an H-surface T-shaped branch waveguide.
8. The broadband arbitrary power division ratio H-plane waveguide power divider as claimed in claim 7, wherein: the flat waveguide (8), the inverted output standard waveguide (6) and the T-arm flat waveguide (7) are in coplanar connection through one H surface, and the cavity is split and processed from the coplanar H surface.
9. The broadband arbitrary power splitting ratio H-plane waveguide power divider of claim 1, wherein: the first standard waveguide (4), the second standard waveguide (5) and the reverse phase output standard waveguide (6) adopt corresponding standard waveguides according to specific working frequency bands.
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| CN204905408U (en) * | 2015-08-18 | 2015-12-23 | 中国电子科技集团公司第五十四研究所 | Ware is divided to broadband waveguide evil spirit T merit |
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| CN103236584A (en) * | 2013-04-18 | 2013-08-07 | 山东国威卫星通信有限公司 | Side-lobe level controllable planar antenna |
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| CN105006625A (en) * | 2015-08-18 | 2015-10-28 | 中国电子科技集团公司第五十四研究所 | Broadband waveguide magic-T power splitter |
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