An undamped electromagnetic wave power transmission device
A power transmission, electromagnetic wave technology, applied in the direction of connecting devices, circuits, electrical components, etc., can solve problems such as thrust measurement interference, and achieve the effects of avoiding contact damping, improving operability and measurement accuracy, and reducing load-bearing.
Active Publication Date: 2017-11-07
CHINA ACADEMY OF SPACE TECHNOLOGY
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Problems solved by technology
[0004] The technical problem solved by the present invention is to overcome the deficiencies of the prior art and provide an electromagnetic wave power transmission device, which can solve the interference problem of the microwave transmission line interference torque on the thrust measurement during the thrust measurement process of the existing electromagnetic thruster
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Embodiment Construction
[0013] The invention combines the transmission performance of the semi-open cylindrical structure and the shielding performance of the two-dimensional moving mechanism to form a composite geometry microwave power transmission cavity. By adjusting the two-dimensional moving mechanism, the microwave input at the input end can be extracted at the output end in a form that satisfies the requirement that the power attenuation is less than 0.5dB under the condition of centering.
[0014] (1) Given a microwave frequency f (unit GHz), the semi-open resonant cavity body 1 of the composite geometry transmission cavity is designed according to the resonant frequency. Calculate the radius R (unit meter) and height H (unit meter) of the semi-open resonator body 1 according to the given microwave frequency f and the required resonance mode. The specific method is as follows.
[0015] According to passive Maxwell's equations
[0016]
[0017] Where E and H represent the electric field c...
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An undamped electromagnetic wave power transmission device, comprising a semi-open resonant cavity body (1), an input end (2), an upper cover (3) and an output end (4), the semi-open resonant cavity body (1) being open at one end A hollow cylinder with a height H and a bottom radius R. The upper cover (3) is a disk with a radius of R1, and R1>R, the disk is parallel to the open end of the hollow cylinder and the axis of the hollow cylinder passes through the center of the disk. Both the input end (2) and the output end (4) are coaxial cables, and the input end (2) is located at the center of the upper cover (3), and the output end (4) is located at the outer bottom of the hollow cylinder and is at a distance from the bottom At the center R / 2~R / 3 position. The transmission device of the invention not only ensures that the electromagnetic wave can be effectively transmitted from the microwave source to the thruster, but also avoids the contact damping between the microwave source and the thruster, and can greatly improve the operability and measurement accuracy of the thrust measurement test of the electric thruster.
Description
technical field [0001] The invention relates to a microwave power transmission device, which is suitable for thrust calibration of electromagnetic thrusters. Background technique [0002] In recent years, as a new concept of propulsion technology, electromagnetic propulsion technology has been continuously developed, and has become a focus of attention and research in the aerospace field of various countries. Related experiments and verifications of electromagnetic propulsion technology have been carried out one after another. In order to calibrate the small thrust generated by electromagnetic propulsion, it is necessary to eliminate the interference torque caused by test equipment, such as microwave transmission lines, to achieve accurate measurement. [0003] The current method of accurately measuring the thrust of the electromagnetic thruster is to install the electromagnetic thruster on the torsion pendulum. The microwave equipment that provides the electromagnetic wave ...
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IPC IPC(8): H01P5/00
Inventor 彭维峰陈粤白光明
Owner CHINA ACADEMY OF SPACE TECHNOLOGY