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High-power overmode microwave elbow with controllable polarization

A high-power, elbow technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problems of increasing the transmission loss of high-power microwave systems, reducing transmission efficiency, and increasing cost, so as to improve transmission efficiency and improve The effect of compactness and loss reduction

Inactive Publication Date: 2016-09-07
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these circular polarizers can effectively change the microwave polarization mode, the use of such devices will increase the transmission loss of the high-power microwave system and reduce the transmission efficiency; on the other hand, it will increase the volume of the entire system , increase the cost

Method used

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  • High-power overmode microwave elbow with controllable polarization
  • High-power overmode microwave elbow with controllable polarization
  • High-power overmode microwave elbow with controllable polarization

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Embodiment 2

[0041] Embodiment 2 is different from Embodiment 1 in that image 3 In the shown internal cavity structure, the length of the elliptical waveguide 3-3 becomes 92 mm, the length of the second transition section B becomes 62 mm, and the other dimensions are the same as those in Embodiment 1. The longitudinal length of the entire elbow in this embodiment is 256mm. TE 1,1 After the die passes through the elbow under this size, the two polarization directions TE 1,1 mode will produce a phase difference of about 180° or so. In this way, the elbow can realize a turning with constant polarization, that is, turning from linear polarization to linear polarization, and from circular polarization to circular polarization.

[0042] This embodiment TE 1,1 The relationship between the output mode amplitude of the elbow and the frequency is as follows: Figure 7 As shown in the figure, the operating frequency is in the range of 13.628GHz to 14.662GHz, the bandwidth of the amplitude of th...

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Abstract

The invention discloses a high-power overmode microwave elbow with controllable polarization, and belongs to the technical field of high-power microwave transmission devices. The external integral structure of the elbow is a 90-degree bending rectangular shell with two ends symmetrically extending outwards, and the internal cavity structure of the elbow comprises a 90-degree bending square waveguide and a second transition section, an elliptical waveguide, a first transition section and a circular waveguide which are communicated with the two ends of the 90-degree bending square waveguide in sequence respectively, wherein all joints of the internal cavity are in smooth transition, and two ends of the elbow are symmetrical. According to the high-power overmode microwave elbow, the amount of functional devices in a transmission system is reduced as much as possible under the precondition that application requirements of turning and polarization change for a high-power microwave transmission system are met, and the compact degree, transmission efficiency and mode purity of the system are improved. Moreover, the provided high-power elbow realizes the conversion of wave beam linear polarization and circular polarization states according to the application requirements while wave beam high-efficiency turning is guided.

Description

technical field [0001] The invention belongs to the technical field of high-power microwave transmission devices, and in particular relates to a high-power over-molded microwave elbow with controllable polarization. Background technique [0002] In a high-power microwave transmission system, in order to effectively guide the beam propagation and reduce the system volume, it is inevitable to use an overmodulated circular waveguide elbow to change the beam propagation direction. Due to the introduction of the waveguide bend, the uniformity of the transmission line is destroyed, and the spurious mode is easily introduced, and the transmission efficiency is reduced. How to suppress the emergence of parasitic modes through certain technical means and maintain good transmission efficiency is the key to the design of high-power overmode waveguide elbows, and it is also the main difficulty. TE 1,1 mode is the fundamental mode of the circular waveguide and is easily converted to TM...

Claims

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Application Information

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IPC IPC(8): H01P1/02
CPCH01P1/02H01P1/022
Inventor 李浩江翠玲吴泽威李天明
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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