A Microstrip Slow Wave Structure
A technology of slow-wave structure and microstrip line, which is applied to the circuit components of transit-time electron tubes, etc., and can solve problems such as large working voltage, small coupling impedance, and small coupling impedance of traveling wave tubes.
Inactive Publication Date: 2015-10-21
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0004] However, the coupling impedance of the N-type metal microstrip slow-wave structure TWT is relatively small, and the operating voltage is relatively large. The coupling impedance is a parameter that characterizes the strength of the electron beam and the slow-wave system, and the coupling impedance directly affects Gain and Efficiency of Traveling Wave Tubes
The relatively small coupling impedance and large operating voltage of the N-type metal microstrip slow-wave structure limit its application development
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[0017] A microstrip meander slow-wave structure, such as image 3 , 4 As shown, it includes a microstrip transmission line structure formed by a metal microstrip line 1 , a dielectric substrate 2 and a metal backplane 3 ; The metal microstrip line 1 is composed of several "O" type metal microstrip line units connected end to end to form a periodic structure, wherein the "O" type metal microstrip line unit is composed of an elliptical split ring microstrip line and two sections respectively It consists of a microstrip line connected to both ends of the opening of the elliptical split ring microstrip line.
[0018] Define the size parameters of the above-mentioned microstrip slow wave structure: a is the length of the transverse axis of the elliptical split ring, b is the length of the longitudinal axis of the elliptical split ring, c is the thickness of the dielectric substrate 2, w1 is the opening width of the elliptical split ring, w is the width of the metal microstrip lin...
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The invention discloses a microstrip line slow-wave structure and belongs to the technical field of microwave vacuum electrons and relates to an O-shaped electron vacuum device. The microstrip line slow-wave structure comprises a microsrip transmission line structure which is formed by a metal microstrip line (1), a medium substrate (2) and a metal base plate (3), wherein the metal microstrip line (1) is of a periodic structure which is formed by a plurality of O-shaped metal microstrip line units, the O-shaped metal microstrip line units are in end-to-end connection, each O-shaped metal microstrip line unit is composed of an ellipse opening ring microstrip line and two microstrip lines, and the two microstrip lines are respectively connected with two ends of an opening of the ellipse opening ring microstrip line respectively. Compared with a traditional N-shaped microstrip line slow-wave structure, the microstrip line slow-wave structure has higher coupling impedance and lower working voltages under the size of the same devices, and comprehensive requirements for the aspects such as output power, the working voltages and weight of a traveling-wave tube can be further met.
Description
technical field [0001] The invention belongs to the technical field of microwave vacuum electronics and relates to an "O" type electric vacuum device. Background technique [0002] "O" type electric vacuum device is the most important type of microwave and millimeter wave source in the field of vacuum electronics. It has the characteristics of high power, high efficiency, high gain, wide frequency bandwidth and long life, and is widely used in millimeter wave and sub- Millimeter wave radar, guidance, communication, microwave remote sensing, radiation measurement and other fields are also praised as the "heart" of weapons and equipment, and its performance directly determines the level of the overall equipment. And its microstrip slow-wave structure is mainly used in traveling wave tubes. Compared with other types of devices, the advantages of traveling wave tubes are wide frequency band, good heat dissipation performance, high gain of single tube, excellent nonlinear perfor...
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IPC IPC(8): H01J23/24
Inventor 廖雷魏彦玉程兆亮王森林彭立宫玉彬
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA