CN104112894B - A kind of ring-shape bridge - Google Patents
A kind of ring-shape bridge Download PDFInfo
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- CN104112894B CN104112894B CN201410316371.0A CN201410316371A CN104112894B CN 104112894 B CN104112894 B CN 104112894B CN 201410316371 A CN201410316371 A CN 201410316371A CN 104112894 B CN104112894 B CN 104112894B
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- annular chamber
- ring
- base
- coupling loop
- shape bridge
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Abstract
The invention discloses a kind of ring-shape bridge, comprise base, annular chamber lid, coupling loop and probe; Annular chamber lid is fixed on base, and coupling loop is arranged in the annular chamber of base; Probe base periphery is socketed with copper ring, and the periphery of copper ring is nested with cylindrical insulator medium, and the periphery of insulator medium is socketed with negative joint, and probe, insulator medium and negative joint form coaxial transmission line.Ring-shape bridge disclosed by the invention, goes for the microwave Sampling device of clinac, and annular bridge structure of the present invention is simple, is easy to assembling, can hold larger power simultaneously; High-power equipment can be applied to.
Description
Technical field
The present invention relates to microwave transmission device, be specifically related to a kind of ring-shape bridge.
Background technology
Clinac is that one makes its displacement by accelerating electronics, and produce and have the higher electron beam of energy, bombardment lesion tissue, kills focus cell, reach the object equipment for the treatment of.This equipment needs the microwave source of more than employing 2.6 megawatt, for checking the electric field that microwave is set up at accelerating cavity, and with the matching degree of electronics, need to detect the size of Microwave emission end and reflection end microwave in waveguide, and then determine whether needing to change adjusting micro-wave frequency.3dB ring-shape bridge is exactly a kind of microwave Sampling device, and traditional 3dB ring-shape bridge is mostly the electric bridge of micro-band forms, and the power that can hold is low, cannot realize the requirement of high-power equipment.
In order to solve above-mentioned deficiency of the prior art, the present invention proposes a kind of new solution.
Summary of the invention
The object of this invention is to provide a kind of ring-shape bridge.
For reaching above-mentioned purpose, the technical solution adopted in the present invention is: provide a kind of ring-shape bridge, comprises base, annular chamber lid, coupling loop and the probe with annular chamber; Annular chamber lid is fixed on base, and coupling loop is arranged in the annular chamber of base;
Probe base periphery is socketed with copper ring, is nested with cylindrical insulator medium, the periphery of insulator medium is nested with negative joint outside copper ring;
The semi arch of coupling loop is evenly distributed with four probes, adjacent probe is arranged on the both sides of coupling loop respectively; Be provided with two in the annular chamber of described base for being connected and fixed the screwed hole of negative joint, all there is a through hole at base center and annular chamber lid center, and annular chamber covers and is provided with two for being connected and fixed the screwed hole of negative joint; The insulator medium being in two probes of homonymy is embedded in the annular chamber of homonymy respectively.
In sum, the present invention has the following advantages:
Ring-shape bridge disclosed by the invention, goes for the microwave Sampling device of clinac, and annular bridge structure of the present invention is simple, is easy to assembling, can hold larger power simultaneously; High-power equipment can be applied to.
Accompanying drawing explanation
Fig. 1 is the schematic diagram after the present invention assembles;
Fig. 2 is the stereogram of base;
Fig. 3 is the schematic diagram of annular chamber lid;
Fig. 4 is the schematic diagram of negative joint;
Fig. 5 is the schematic diagram of copper ring;
Fig. 6 is the schematic diagram of insulator medium;
Fig. 7 is the schematic diagram of coupling loop;
Fig. 8 is the schematic diagram of probe;
Fig. 9 is the position view of A, B, C, D tetra-ports;
Figure 10 is the assembling sectional view of probe and copper ring, negative joint, insulator medium.
Wherein, 1, base; 2, annular chamber lid; 3, coupling loop; 4, screwed hole; 5, through hole; 6, negative joint; 21, annular chamber; 7, probe; 8, copper ring; 9, insulator medium.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
In one embodiment of the present of invention, disclose a kind of 3db ring-shape bridge.As shown in Figure 1, base 1, annular chamber lid 2, coupling loop 3 and the probe 7 with annular chamber 21 is comprised.Annular chamber lid 2 is fixed on base 1, and coupling loop 3 is arranged in the annular chamber 21 of base 1.
Bottom probe 7, periphery is socketed with copper ring 8, is nested with cylindrical insulator medium 9, the periphery of insulator medium 9 is nested with negative joint 6 outside copper ring 8.Probe 7, insulator medium 9, copper ring 8 and negative joint 6 are coaxial, form coaxial transmission line.
The semi arch of coupling loop 3 is evenly distributed with four probes 7, adjacent probe 7 is arranged on the both sides of coupling loop 3 respectively.Be provided with two in the annular chamber 21 of base 1 for being connected and fixed the screwed hole 4 of negative joint 6, all there is a through hole 5 at base 1 center and annular chamber lid 2 center, and annular chamber lid 2 is provided with two for being connected and fixed the screwed hole 4 of negative joint 6; The insulator medium 9 being in two probes 7 of homonymy is embedded in the annular chamber 21 of homonymy respectively.
In one embodiment of the present of invention, an end face of insulator medium 9 penetrates in annular chamber 21 and contacts with coupling loop 3, and the other end passes annular chamber 21 and embeds negative joint 6 inside, coupling loop 3 is fixed on annular chamber 21 etc. center.The dielectric constant of insulator medium 9 is 2.0.
In one embodiment of the present of invention, two negative joint 6 end faces of coupling loop 3 side and the screwed hole 4 of annular chamber 21 base 1 are connected and fixed, and two negative joint 6 end faces of coupling loop 3 opposite side are also connected and fixed with the screwed hole 4 of annular chamber lid 2.
In one embodiment of the present of invention, the internal diameter girth of coupling loop 3 and the ratio of microwave wavelength are 3:2.On the semi arch of coupling loop 3, the minor arc between adjacent probe 7 is quarter-wave.When the microwave wavelength used changes, need to carry out respective change to the internal diameter of coupling loop 3, corresponding effect can be reached.
In one embodiment of the present of invention, the end face that base 1 contacts with annular chamber lid 2 is equipped with screwed hole, and both are fixedly connected with by screw.
In one embodiment of the present of invention, the center of base 1 and annular chamber lid 2 is provided with and coordinates all-in-one-piece through hole 5, the central coaxial of through hole 5, base 1 and annular chamber lid 2.
In one embodiment of the present of invention, two probes 7 of coupling loop 3 side are microwave signal input, and two probes 7 of opposite side are microwave signal output.
In one embodiment of the present of invention, probe 7 top is provided with external screw thread, and coupling loop 3 is provided with the screw hole for stationary probe 7.
Operation principle of the present invention:
After base 1 of the present invention and annular chamber lid 2 combine, its inside has annular chamber 21, and annular chamber 21 has two end faces, each end face is all provided with two probes 7, if two of one of them end face probes 7 are as input port, then two probes 7 of the other end are all as output port.
Point-blank, three can form coaxial transmission waveguide to the center line of probe 7, the insulator collar and negative joint 6, and the insulator collar can make the characteristic impedance of this coaxial transmission line equal.Cloudy shape joint 6 is connected and fixed with base 1 and annular chamber lid 2, so can utilize insulator medium 9 that coupling loop 3 is fixed on the center of base 1.
As shown in Figure 9, microwave inputs from port A, carries out the microwave transmission of same-phase with amplitude clockwise and counterclockwise after power-sharing along coupling loop 3.The wavelength of microwave can be 1cm ~ 10cm, and when after microwave transmission to port D, two ripple cophase stackings export; After being transferred to port C, two wave phases differ 2 π superpositions and export; When being transferred to port B, two wave phase phase difference of pi subtract each other output, because two wave-amplitude same phases are contrary, so inactivity exports.
When microwave inputs from port B, power-sharing carries out the microwave transmission of same-phase with amplitude clockwise and counterclockwise along coupling loop 3, when microwave transmission is to port D, and two train wave phase 2 π, then in-phase stacking exports; When being transferred to port C, two train wave phase 2 π, cophase stacking exports; When being transferred to port A, two train wave phase by pi antiphases subtract each other output, again because two wave-amplitude same phases are contrary, so inactivity exports.And when only having the phase 90 ° when two port input microwave signals, the power of two output port outputs is equal.
Claims (10)
1. a ring-shape bridge, is characterized in that: comprise base, annular chamber lid, coupling loop and the probe with annular chamber; Annular chamber lid is fixed on base, and coupling loop is arranged in the annular chamber of base;
Described probe base periphery is socketed with copper ring, is nested with cylindrical insulator medium, the periphery of insulator medium is nested with negative joint outside copper ring;
The semi arch of described coupling loop is evenly distributed with four probes, adjacent probe is arranged on the both sides of coupling loop respectively; Be provided with two in the annular chamber of described base for being connected and fixed the screwed hole of negative joint, all there is a through hole at base center and annular chamber lid center, and annular chamber covers and is provided with two for being connected and fixed the screwed hole of negative joint; The insulator medium being in two probes of homonymy is embedded in the annular chamber of homonymy respectively.
2. ring-shape bridge as claimed in claim 1, is characterized in that: an end face of described insulator medium penetrates in annular chamber and contacts with coupling loop, and the other end passes annular chamber and embeds negative joint inside.
3. ring-shape bridge as claimed in claim 1, it is characterized in that: two negative joint end faces of described coupling loop side are connected with the screwed hole of annular chamber in base, two negative joint end faces of coupling loop opposite side and the screwed hole of annular chamber lid are connected and fixed.
4. ring-shape bridge as claimed in claim 1, is characterized in that: the dielectric constant of described insulator medium is 2.0.
5. ring-shape bridge as claimed in claim 1, is characterized in that: the internal diameter girth of described coupling loop and the ratio of microwave wavelength are 3:2.
6. ring-shape bridge as claimed in claim 1, is characterized in that: on the semi arch of described coupling loop, and the minor arc between adjacent probe is long is quarter-wave.
7. ring-shape bridge as claimed in claim 1, is characterized in that: the end face that described base contacts with annular chamber lid is equipped with screwed hole, and both are connected by screw fixing.
8. ring-shape bridge as claimed in claim 1, is characterized in that: the cooperation all-in-one-piece through hole that the center of described base and annular chamber lid is provided with, the central coaxial of through hole, base and annular chamber lid.
9. ring-shape bridge as claimed in claim 1, it is characterized in that: two probes of described coupling loop side are microwave signal input, two probes of opposite side are microwave signal output.
10. ring-shape bridge as claimed in claim 1, it is characterized in that: described tips of probes is provided with external screw thread, coupling loop is provided with the screw hole for stationary probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410316371.0A CN104112894B (en) | 2014-07-04 | 2014-07-04 | A kind of ring-shape bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410316371.0A CN104112894B (en) | 2014-07-04 | 2014-07-04 | A kind of ring-shape bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104112894A CN104112894A (en) | 2014-10-22 |
| CN104112894B true CN104112894B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410316371.0A Active CN104112894B (en) | 2014-07-04 | 2014-07-04 | A kind of ring-shape bridge |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2729735B1 (en) * | 1995-01-25 | 1997-03-21 | Levivier Yves | FLANGE FOR TUBE OR COMPENSATOR SLEEVE |
| US6142878A (en) * | 1998-11-23 | 2000-11-07 | Barin; Jose Florian B. | Flexible coupling with elastomeric belt |
| CN201178127Y (en) * | 2008-04-23 | 2009-01-07 | 中国航天科技集团公司第五研究院第五〇四研究所 | Loop coupling duplex device |
| CN103904400B (en) * | 2014-04-08 | 2017-12-15 | 徐玉玉 | A kind of 3dB electric bridges |
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2014
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| CN104112894A (en) | 2014-10-22 |
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