A standing wave ratio adjusting device
A technology of adjusting device and standing wave ratio, which is applied in accelerators, electrical components, etc., can solve the problems of reflected power radio frequency transmission equipment, such as extremely harmful, large standing wave ratio, and total reflection
Pending Publication Date: 2019-01-08
BEIJING CHANGFENG BROADCASTING COMM EQUIP
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Problems solved by technology
[0003] Because the accelerator is not always an ideal purely resistive matching load, during the training process of the high-frequency cavity of the accelerator, the high-frequency cavity will work in a mismatched state for a long time, and the standing wave ratio is usually large, resulting in large reflected power, even Generate total reflection; when the transmitter outputs high power, excessive reflection power will be extremely harmful to radio frequency transmission equipment or transmitters
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[0034] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.
[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct...
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The invention discloses a standing wave ratio adjusting device which comprises a main body and a sliding contact ring. The body includes an outer feed line and an inner feed line arranged coaxially, an inner annular surface of the sliding contact ring is in electrical contact with the inner feed line, an outer annular surface of the sliding contact ring is in electrical contact with the outer feedline, and the sliding contact ring is capable of reciprocating sliding along an axial direction of the body; The body is provided with a first port for connecting the transmitter and a second port for connecting the matching load. The VSWR adjusting device provided by the invention can simulate the different VSWR corresponding to the matching state to the mismatch state of the accelerator high-frequency cavity with the change of the equivalent impedance, and is used for detecting and testing the anti-reflection ability of the front-end equipment of the accelerator high-frequency cavity, suchas the transmitter and the radio frequency transmission equipment.
Description
technical field [0001] Embodiments of the present invention relate to the technical field of particle accelerators, and in particular to a standing wave ratio adjusting device. Background technique [0002] Ultrashort-wave high-power transmitters, with rated output power (average power) of tens to hundreds of kilowatts, are used to provide radio frequency voltage for particle accelerators to accelerate charged particles. [0003] Since the accelerator is not always an ideal purely resistive matching load, during the training process of the high-frequency cavity of the accelerator, the high-frequency cavity will work in a mismatched state for a long time, and the standing wave ratio is usually large, resulting in large reflected power, even Generate total reflection; when the transmitter outputs high power, excessive reflection power will do great harm to the radio frequency transmission equipment or transmitter. [0004] The load mismatch state in actual operation is uncont...
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IPC IPC(8): H05H7/02
CPCH05H7/02
Inventor 郭际高岷民
Owner BEIJING CHANGFENG BROADCASTING COMM EQUIP