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Dual-orientation electrical bridge

A double directional bridge and resistance technology, applied in the direction of measuring electrical variables, measuring devices, instruments, etc., can solve the problems of poor productivity, poor reliability and stability of the bridge, etc., and achieve good directionality, good directionality, Simple structure and practical effect

Active Publication Date: 2013-10-09
CHINA ELECTRONIS TECH INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a dual-directional electric bridge, which aims to solve the problems of poor reliability and stability of the electric bridge realized in the prior art, and its poor productivity.

Method used

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] The double directional electric bridge described in the present invention has a large working bandwidth, especially the low end can work up to 40kHz, has good directivity, can improve the test accuracy of the low end of the test instrument, is realized by a printed board, and has a simple structure It is reliable, avoids complicated debugging, has high productivity, and has good use value in broadband test instruments.

[0027] Such as figure 1 As shown, the present invention discloses an ultra-wideband high-performance dual-directional electric bridge realized by a printed board, with coup...

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Abstract

The invention belongs to the technical field of printed board design, and provides a dual-orientation electrical bridge. The dual-orientation electrical bridge is characterized in that the dual-orientation electrical bridge comprises a printed board, a coaxial cable, a magnetic core, a plurality of resistors, a capacitor C1 and a capacitor C2, wherein the coaxial cable is placed on the printed board, the magnetic core is sleeved on the magnetic core, the resistors are evenly distributed at the two ends of the coaxial cable, the capacitor C1 is arranged at a first end of the coaxial cable, and the capacitor C2 is arranged at a second end of the coaxial cable. Due to the fact that electric bridge balance is constructed, the dual-orientation electrical bridge has high directivity within a 40 kHz-3 GHz frequency band, is achieved through the dual-orientation electrical bridge, and has the advantages of being simple in structure and high in producibility.

Description

technical field [0001] The invention belongs to the technical field of printed board design, in particular to a double-directional electric bridge. Background technique [0002] With the continuous development of electronic testing technology, the frequency band is required to be wider and wider. Dual directional bridges are widely used in electronic test systems, and their main function is to separate forward waves and reverse waves through forward coupling and reverse isolation. The directivity index is one of the main parameters to measure the performance of the broadband dual-directional bridge, and it is also one of the key factors affecting the test accuracy of the test system. [0003] At present, the same kind of double directional bridge generally adopts the microstrip structure with thick film resistors, and the directionality and other indicators are guaranteed by adjusting the position of the magnetic ring and pasting the absorber. [0004] Through the analysis...

Claims

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Application Information

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IPC IPC(8): G01R17/00
Inventor 张海洋刘军刘敬坤段喜东赵苏宇
Owner CHINA ELECTRONIS TECH INSTR CO LTD
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