Admittance slide block for impedance adapter
A adjuster and admittance technology, used in transmission monitoring, electrical components, transmission systems, etc., can solve problems such as measurement accuracy limitations, achieve a wide range of impedance matching ratios, solve high-voltage breakdown, and achieve good consistency.
Inactive Publication Date: 2011-05-04
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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Problems solved by technology
In the slotted measurement line method, because it relies on the probe sliding along the slotted section to detect the electric field distribution in the line body to measure the voltage standing wave ratio, and the sliding transmission mechanism causes irregular changes in the probe coupling, the slotting The measurement error caused by the residual reflection of the measurement line, the unsteady loading of the probe, and the nonlinearity of detection and indication are inherent defects, which limits the measurement accuracy
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[0024] The implementation of the present invention will be further described below in conjunction with the accompanying drawings. figure 1 , figure 2 It is two structural schematic diagrams of the lumped element L-section matching network method adopted in the prior art. Among them: Z L is the load impedance, Z 0 Is the characteristic impedance, and X, B are the reactance components for deployment. The lumped element L-section matching network method is to use an L-section network composed of two reactive elements to realize the deployment of any load impedance. This lumped element L-section matching network method, for different load impedances, the reactive element can be inductance or capacitance. The lumped element L-section matching network method adopts the method of lumped elements, the operating frequency is low, and it cannot flexibly change and adjust the matching impedance in a wide operating frequency band to meet the deployment requirements of vector impedanc...
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The invention belongs to the technical field of microwave test, and relates to an admittance slide block for an impedance adapter. The admittance slide block is connected to a panel coaxial transmission line in parallel, the left side and the right side of the impedance adapter are provided with two elastic conductor surfaces capable of being parallel to each other in working states, a discontinuous arc-shaped working surface is arranged at the lower part of the admittance slide block and between the two elastic conductor surfaces, a hole block for improving and regulating the elasticity of the elastic conductor surfaces is arranged on the arc-shaped working surface, and a dielectric film for enlarging a dielectric constant is arranged on the discontinuous arc-shaped working surface. The admittance slide block can change the admittance value by horizontally and vertically moving on the panel coaxial transmission line to realize transformation and adaption of apparent impedances in a joint input port, and in the working frequency range of the impedance adapter, the admittance slide realizes favorable consistence, stable grounding impedance and high repeatability; and the admittance slide block solves the problem of high-voltage breakdown of the impedance adapter in a large-signal working state.
Description
technical field [0001] The invention belongs to the technical field of microwave testing, and relates to an admittance slider used in an impedance adjuster suitable for multi-parameter measurement of a microwave network in a microwave large signal state, and solves the realization problem of vector impedance adjustment in an actual working state. Background technique [0002] Impedance matching technology is not only widely used in the transmission system of microwave equipment to obtain good working performance and transmission efficiency, but also very important for microwave measurement. The quality of the impedance matching of the measurement system is directly related to the accuracy of the measurement data. At present, in terms of solving the realization problem of vector impedance allocation under actual working conditions, there are mainly lumped element L-section matching network method, λ / 4 transformation method, gradient line method and slotted measurement line me...
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IPC IPC(8): H04B17/00H04L25/02
Inventor 郭敏路波
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP