CN103378395B - A kind of E face waveguide magic T with coplanar arm - Google Patents
A kind of E face waveguide magic T with coplanar arm Download PDFInfo
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- CN103378395B CN103378395B CN201310275820.7A CN201310275820A CN103378395B CN 103378395 B CN103378395 B CN 103378395B CN 201310275820 A CN201310275820 A CN 201310275820A CN 103378395 B CN103378395 B CN 103378395B
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Abstract
The invention provides a kind of E face waveguide magic T with coplanar arm, be applied in microwave technical field; Comprise the first I/O waveguide, the second I/O waveguide, the 3rd I/O waveguide and the 4th I/O waveguide; It is characterized in that: the first I/O waveguide, the second I/O waveguide, the 3rd I/O waveguide and the 4th I/O waveguide are disposed on the same plane.The present invention's evil spirit T is convenient to process and assemble and is connected with compact systems; In addition the present invention's evil spirit T has good merit point amplitude balance and phase equilibrium, has isolation performance between good port.
Description
Technical field
The present invention relates to microwave technical field, more particularly, relate to a kind of waveguide magic T.
Background technology
Along with developing rapidly of frequency microwave technology, in order to meet various technical need, people's invention devises various frequency microwave device, and magic T is then one conventional in these devices.Evil spirit T is 4 port devices, is usually combined into by E face knot and H face.Evil spirit T has several key property: dividing equally the property of power, and namely magic T-phase neighbour two mouthfuls has the coupling amount of 3dB; Counterpart isolation, two namely orthogonal ports are mutually isolated; Automatic Scheduling Matching, after two namely orthogonal port match, two remaining port Auto-matchings.Due to these characteristics, magic T extensive application.Evil spirit T is used to balanced mixer, two independently signal respectively deciles between two quartz crystals.Evil spirit T is used as power splitter, realizes input signal power decile.Evil spirit T is also used as impedance bridge, standard phase shifter.In addition, magic T is also through being usually used in antenna feed system.
The magic T of tradition is formed by E-T and H-T splice combinations, as shown in Figure 3.Due to structural symmetry, mutually isolated between two orthogonal ports.In addition, in order to eliminate the discontinuity of joint, usually adding the elements such as some cones, pin, metallic membrane, realizing the coupling of port.Four arms of the magic T of tradition are in 4 directions, and 4 arms are not in same plane, are unfavorable for the system integration like this.Matching element also more difficult processing and the assemblings such as cone, pin, metallic membrane.Then, there is scholar to propose E face and fold magic T and H face and fold magic T, exactly two, E face arm is folded into same direction or two, H face arm is folded into same direction, as shown in Figure 4.Like this, facilitate system to connect in some occasion, but its 4th arm and 3 remaining arms are not still in same plane.E face folds magic T and H face evil spirit T also to be needed to add metallic membrane etc. and is difficult to process and the matching element of assembling realizes the coupling of port.Have again scholar be beneficial to directional coupler and phase shifter designed in conjunction go out novel magic T structure.Due to the asymmetry of structure, the merit of the magic T of this structure divides Amplitude balance and phase balance poor.In addition, the more difficult design of broad-band phase shifter, therefore the limited bandwidth of the magic T of general this structure.Recently there is scholar to lead TE10-TE20 mould mode converter designs based on H ground roll and go out magic T.This magic T is by optimizing the outline line in H face and realizing in the position of the Metallic rod of joint area and size.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide one to have coplanar arm, be convenient to process and assemble and be connected with compact systems, there is good merit point amplitude balance and phase equilibrium, there is the E face waveguide magic T of isolation performance between good port.
In order to achieve the above object, the present invention adopts following technical scheme: a kind of E face waveguide magic T with coplanar arm, comprises the first I/O waveguide, the second I/O waveguide, the 3rd I/O waveguide and the 4th I/O waveguide; It is characterized in that: the first I/O waveguide, the second I/O waveguide, the 3rd I/O waveguide and the 4th I/O waveguide are disposed on the same plane.The all waveguides of the present invention evil spirit T, all in same plane, are convenient to carry out cascade and are formed Iarge-scale system, be also convenient to be connected with other device.
Described first I/O waveguide, the second I/O waveguide and the 3rd I/O waveguide are connected to form "T"-shaped device; The first described I/O waveguide, the second I/O waveguide and the 3rd I/O waveguide are connected to form "T"-shaped device and refer to, second I/O waveguide and the 3rd I/O waveguide are arranged on the same axis, and the first I/O waveguide is arranged in the vertical direction of the second I/O waveguide and the 3rd I/O waveguide place axis; Described 4th I/O waveguide is arranged on the top of "T"-shaped device.
Further scheme is: the "T"-shaped device that the 4th I/O waveguide consists of microstrip line and the first I/O waveguide, the second I/O waveguide and the 3rd I/O waveguide is connected.
The symmetrical configuration of described second I/O waveguide and the 3rd I/O waveguide; Described second I/O waveguide and the 3rd I/O waveguide include half height waveguide segment, waveguide impedance matching section and the standard waveguide port be connected successively.The structure of the present invention's evil spirit T has symmetry, from the signal that the first I/O waveguide enters, and power decile between the second I/O waveguide and the 3rd I/O waveguide, and phase 180 degree; From the signal that the 4th I/O waveguide is entered, power decile between the second I/O waveguide and the 3rd I/O waveguide, phase place is identical; Structural symmetry makes magic T have good merit point amplitude balance and phase equilibrium.
Be provided with in the joint that the first I/O waveguide, the second I/O waveguide and the 3rd I/O waveguide are formed for eliminating joint discontinuity and realizing the waveguide corner cut of port match.The joint of the second I/O waveguide and the 3rd I/O waveguide has discontinuity, adds the discontinuity that waveguide corner cut can eliminate joint, can realize the port match of the first I/O waveguide simultaneously.
Described microstrip line is arranged on the axis of the first I/O waveguide; One end of described microstrip line extend in the 4th I/O waveguide, and the other end extend into the joint that the first I/O waveguide, the second I/O waveguide and the 3rd I/O waveguide are formed.
Described microstrip line comprises the first coupled section, the first impedance matching section, the second impedance matching section and the second coupled section that connect successively; Described first coupled section is arranged on the joint that the first I/O waveguide, the second I/O waveguide and the 3rd I/O waveguide are formed; Described second coupled section is arranged in the 4th I/O waveguide.The microstrip line segment design of the present invention's evil spirit T, can realize the port match of the 4th I/O waveguide by the size adjusting each section.
The present invention possesses following outstanding advantages and effect relative to prior art:
1, all waveguides of the present invention's evil spirit T are arranged in same plane, are convenient to processing, are convenient in compact systems, carry out cascade and form Iarge-scale system, be also convenient to be connected with other device;
2, the present invention's evil spirit T does not need to add similar cone, metallic membrane, pin etc. and is difficult to process and the matching element of assembling, realizes the port match of each waveguide by means of only waveguide corner cut, microstrip line and waveguide impedance matching section, is easy to processing and assembling realizes;
3, the present invention's evil spirit T can have very wide bandwidth, has good merit point amplitude balance and phase equilibrium, and isolation performance between good port.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's evil spirit T;
Fig. 2 is the cutaway view of the present invention's evil spirit T;
Fig. 3 is the structural representation of traditional magic T;
Fig. 4 is the structural representation that E face folds magic T;
Fig. 5 is the reflection coefficient of the first I/O waveguide and signal when inputting from the first I/O waveguide 11, and the merit of the second I/O waveguide 12 and the 3rd I/O waveguide 13 divides coefficient;
Fig. 6 is the reflection coefficient of the 4th I/O waveguide 14 and signal when inputting from the 4th I/O waveguide 14, and the merit of the second I/O waveguide 12 and the 3rd I/O waveguide 13 divides coefficient;
Fig. 7 is the isolation characteristic between the first I/O waveguide 11 and the 4th I/O waveguide 14 and the isolation characteristic between the second I/O waveguide 12 and the 3rd I/O waveguide 13;
Wherein, 11 be the first I/O waveguide, 12 be the second I/O waveguide, 13 be the 3rd I/O waveguide, 14 be the 4th I/O waveguide, 21 be waveguide impedance matching section, 31 be half height waveguide segment for waveguide corner cut, 41 be the first coupled section, 42 be the first impedance matching section, 43 be the second impedance matching section, 44 is the second coupled section, 51.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
E face of the present invention waveguide magic T, its structure is as shown in Figure 1; Comprise the first I/O waveguide 11, second I/O waveguide 12, the 3rd I/O waveguide 13 and the 4th I/O waveguide 14; First I/O waveguide 11, second I/O waveguide 12, the 3rd I/O waveguide 13 and the 4th I/O waveguide 14 are disposed on the same plane.The all waveguides of the present invention evil spirit T, all in same plane, are convenient to carry out cascade and are formed Iarge-scale system, be also convenient to be connected with other device.
First I/O waveguide 11, second I/O waveguide 12 and the 3rd I/O waveguide 13 are connected to form "T"-shaped device; First I/O waveguide 11, second I/O waveguide 12 and the 3rd I/O waveguide 13 are connected to form "T"-shaped device and refer to, second I/O waveguide 12 and the 3rd I/O waveguide 13 arrange on the same axis, and the first I/O waveguide 11 is arranged in the vertical direction of the second I/O waveguide 12 and the 3rd I/O waveguide 13 place axis.4th I/O waveguide 14 is arranged on the top of "T"-shaped device.The symmetrical configuration of the second I/O waveguide 12 and the 3rd I/O waveguide 13.The "T"-shaped device that 4th I/O waveguide 14 consists of microstrip line and the first I/O waveguide 11, second I/O waveguide 12 and the 3rd I/O waveguide 13 is connected, as shown in Figure 2.Microstrip line is arranged on the axis of the first I/O waveguide 12; One end of microstrip line extend in the 4th I/O waveguide 14, and the other end extend into the joint of the first I/O waveguide 11, second I/O waveguide 12 and the 3rd I/O waveguide 13 formation.
The structure of evil spirit T has symmetry, from the signal that the first I/O waveguide 11 enters, and power decile between the second I/O waveguide 12 and the 3rd I/O waveguide 13, and phase 180 degree; From the signal that the 4th I/O waveguide 14 is entered, power decile between the second I/O waveguide 12 and the 3rd I/O waveguide 13, phase place is identical; Structural symmetry makes magic T have good merit point amplitude balance and phase equilibrium.Simultaneously, the symmetry of structure, microstrip line put and the optimal design of microstrip line makes there is good isolation between the first I/O waveguide 11 and the 4th I/O waveguide 14, also have good isolation between the second I/O waveguide 12 and the 3rd I/O waveguide 13.
Microstrip line comprises the first coupled section 41, first impedance matching section 42, second impedance matching section 43 and the second coupled section 44 connected successively; First coupled section 41 is arranged on the joint of the first I/O waveguide 11, second I/O waveguide 12 and the 3rd I/O waveguide 13 formation; Second coupled section 44 is arranged in the 4th I/O waveguide 14.Microstrip line segment design of the present invention, first passes through the size of adjustment first coupled section 41 and the second coupled section 44, optimizes signal coupling; Adjust the size of the first impedance matching section 42 and the second impedance matching section 43 again, realize the port match of the 4th I/O waveguide 14.
Second I/O waveguide 12 and the 3rd I/O waveguide 13 include half height waveguide segment 51, waveguide impedance matching section 21 and the standard waveguide port be connected successively.By waveguide impedance matching section 21, half height waveguide segment 51 is transformed to standard waveguide port.
Be provided with in the joint that the first I/O waveguide 11, second I/O waveguide 12 and the 3rd I/O waveguide 13 are formed for eliminating joint discontinuity and realizing the waveguide corner cut 31 of port match.The joint that second I/O waveguide 12 and the 3rd I/O waveguide 13 are formed has discontinuity, adds the discontinuity that waveguide corner cut 31 eliminates joint, can realize the port match of the first I/O waveguide 11 simultaneously.The shape of waveguide corner cut 31 and size adjust parameter by electromagnetic simulation software AnsoftHighFrequencyStructureSimulator and carry out emulation to determine.The way of realization of waveguide corner cut 31 and shape have a variety of, and the design of waveguide corner cut 31 will realize discontinuity and the port match of eliminating joint on the one hand; On the other hand, waveguide corner cut 31 will have sufficient size to window, and places microstrip line, realizes the connection with the 4th I/O waveguide 14.
The present invention's evil spirit T can be used for multiple occasion.Such as: one, can matching connection load in the first I/O waveguide 11 or the 4th I/O waveguide 14, the present invention's evil spirit T can be used as power distributor/synthesizer; This power distributor/synthesizer cascade forms the power division/comprise network of more large route number; Two, the present invention's evil spirit first I/O waveguide 11 of T and the 4th I/O waveguide 14 can obtain from the differential signal of the signal of the second I/O waveguide 12 and the 3rd I/O waveguide 13 input with and signal, therefore magic T can be applicable in the feed system of radar or antenna system; Three, the present invention's evil spirit T can be used as primary element, is used in the aspects such as standard phase shifter, impedance bridge, balanced mixer.
Be that the magic T of 30GHz is described as an example below with operating center frequency, the width edge length of the first I/O waveguide 11, second I/O waveguide 12, the 3rd I/O waveguide 13 and the 4th I/O waveguide 14 gets 7.12mm, narrow edge lengths gets 3.56mm, then the narrow edge lengths of half height waveguide 51 gets 1.78mm.The size adjusting corner cut 31 by electromagnetic simulation software realizes discontinuity and the port match of eliminating joint, and the upper base length finally obtaining the corner cut isosceles trapezoid of corresponding cutaway view Fig. 2 is 1.8mm, and length of going to the bottom is 2.52mm, and hypotenuse length is 0.86mm.When the reflection coefficient of the first I/O waveguide and signal input from the first I/O waveguide 11, the merit of the second I/O waveguide 12 and the 3rd I/O waveguide 13 divides coefficient as shown in Figure 5.Finally, adjustment microstrip line first coupled section 41, first impedance matching section 42, second impedance matching section 43 and the second coupled section 44 make the 4th I/O waveguide realize coupling, realize the isolation between the first I/O waveguide 11 and the 4th I/O waveguide 14 and the isolation between the second I/O waveguide 12 and the 3rd I/O waveguide 13 simultaneously.When the reflection coefficient of the 4th I/O waveguide 14 and signal input from the 4th I/O waveguide 14, the merit of the second I/O waveguide 12 and the 3rd I/O waveguide 13 divides coefficient as shown in Figure 6.Isolation characteristic between port as shown in Figure 7.
Above-described embodiment is the present invention's preferably execution mode; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. there is an E face waveguide magic T for coplanar arm, comprise the first I/O waveguide, the second I/O waveguide, the 3rd I/O waveguide and the 4th I/O waveguide; It is characterized in that: the first I/O waveguide, the second I/O waveguide, the 3rd I/O waveguide and the 4th I/O waveguide are disposed on the same plane; The first described I/O waveguide, the second I/O waveguide, the 3rd I/O waveguide and the 4th I/O waveguide are disposed on the same plane and refer to, the upper surface of the first I/O waveguide, the second I/O waveguide, the 3rd I/O waveguide and the 4th I/O waveguide is all positioned in plane one, and the lower surface of the first I/O waveguide simultaneously, the second I/O waveguide, the 3rd I/O waveguide and the 4th I/O waveguide is all positioned in plane two;
Described first I/O waveguide, the second I/O waveguide and the 3rd I/O waveguide are connected to form "T"-shaped device; The "T"-shaped device that 4th I/O waveguide consists of microstrip line and the first I/O waveguide, the second I/O waveguide and the 3rd I/O waveguide is connected.
2. the E face waveguide magic T with coplanar arm according to claim 1, it is characterized in that: the first described I/O waveguide, the second I/O waveguide and the 3rd I/O waveguide are connected to form "T"-shaped device and refer to, second I/O waveguide and the 3rd I/O waveguide are arranged on the same axis, and the first I/O waveguide is arranged in the vertical direction of the second I/O waveguide and the 3rd I/O waveguide place axis; Described 4th I/O waveguide is arranged on the top of "T"-shaped device.
3. the E face waveguide magic T with coplanar arm according to claim 2, is characterized in that: the symmetrical configuration of described second I/O waveguide and the 3rd I/O waveguide; Described second I/O waveguide and the 3rd I/O waveguide include half height waveguide segment, waveguide impedance matching section and the standard waveguide port be connected successively.
4. the E face waveguide magic T with coplanar arm according to claim 3, is characterized in that: be provided with in the joint that the first I/O waveguide, the second I/O waveguide and the 3rd I/O waveguide are formed for eliminating joint discontinuity and realizing the waveguide corner cut of port match.
5. the E face waveguide magic T with coplanar arm according to claim 1, is characterized in that: described microstrip line is arranged on the axis of the first I/O waveguide; One end of described microstrip line extend in the 4th I/O waveguide, and the other end extend into the joint that the first I/O waveguide, the second I/O waveguide and the 3rd I/O waveguide are formed.
6. the E face waveguide magic T with coplanar arm according to claim 5, is characterized in that: described microstrip line comprises the first coupled section, the first impedance matching section, the second impedance matching section and the second coupled section that connect successively; Described first coupled section is arranged on the joint that the first I/O waveguide, the second I/O waveguide and the 3rd I/O waveguide are formed; Described second coupled section is arranged in the 4th I/O waveguide.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229598B (en) * | 2016-07-13 | 2018-08-14 | 西北核技术研究所 | The coplanar evil spirit T of kW grades of ultra-compact high-isolations and microwave power synthesis method |
| CN109616732A (en) * | 2018-11-05 | 2019-04-12 | 贵州航天电子科技有限公司 | A kind of Planar Magic-T applied to pulse Planar Slot Antenna |
| CN109860971A (en) * | 2019-03-18 | 2019-06-07 | 贵州航天电子科技有限公司 | A kind of Ka frequency range Planar Magic-T |
| CN110085961A (en) * | 2019-04-29 | 2019-08-02 | 中国电子科技集团公司第三十六研究所 | A kind of waveguide magic T structure |
| RU192642U1 (en) * | 2019-07-01 | 2019-09-25 | Акционерное общество "Научно-исследовательский институт Приборостроения имени В.В. Тихомирова" | DOUBLE WAVE TEE |
| RU198720U1 (en) * | 2020-04-03 | 2020-07-23 | Акционерное общество "Научно-исследовательский институт Приборостроения имени В.В. Тихомирова" | WAVEGUIDE DOUBLE TEE |
| CN113193321A (en) * | 2021-05-17 | 2021-07-30 | 西安华腾微波有限责任公司 | One-to-seven-path waveguide power divider |
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| EP0492357A1 (en) * | 1990-12-20 | 1992-07-01 | Hughes Aircraft Company | Coplanar 3dB quadrature coupler |
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2013
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|---|---|---|---|---|
| EP0492357A1 (en) * | 1990-12-20 | 1992-07-01 | Hughes Aircraft Company | Coplanar 3dB quadrature coupler |
| CN202474174U (en) * | 2012-03-15 | 2012-10-03 | 成都赛纳赛德科技有限公司 | Magic-T power divider |
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Non-Patent Citations (1)
| Title |
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| 高隔离度功分器仿真;刘亚威等;《微波学报》;20120831;论文第300-302页以及图2、4 * |
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