Radio frequency delay line and test method thereof

Abstract

The invention discloses a radio frequency delay line and a test method thereof. The delay line is a snakelike delay line, and the snakelike delay line is formed by arranging microstrip lines in a zigzag structure. The method comprises the steps: through simulation and calculation, comparing the delay amount of the radio frequency delay line, thereby improving the precision; confirming the snakelike winding parallel spacing and coupling distance of the microstrip lines and the number of bulges of the snakelike winding, and checking whether a planar resonance point can be moved out of a passbandfrequency range or not and an influence factor on the delay amount by utilizing a simulation tool. The invention achieves the structural design, theoretical analysis and delay line design index confirmation of the delay line, and the modeling proofreading confirmation on the delay line by utilizing a simulation tool. When a signal acts on a linear system and a linear grid, under the condition that the whole system is completely matched, group delay is enabled to be small in dispersion as much as possible, pass band loss is enabled to be low, pass band reflection is enabled to be small, and time constant is enabled to be stable.

Description

technical field [0001] The invention relates to the field of electronic information, in particular to a radio frequency delay line and a testing method thereof. Background technique [0002] The structures of serpentine delay lines generally include microstrip lines, coplanar waveguides and striplines. In the coplanar structure, the lines are isolated from each other, which reduces the crosstalk between each other, which is a major advantage of the coplanar waveguide; another advantage is that the selection of the line width is flexible. Of course, the coplanar line also has disadvantages, because the current is concentrated at the edge, which makes the insertion loss higher. The other is the problem of mode, which may produce odd mode effects due to the bend, bend of the line or the asymmetry of the center line. The stripline is the only planar transmission line without modal dispersion. Its advantages are as follows: First, because both sides of the stripline are media w...

AI Technical Summary

Problems solved by technology

In general, its advantages are mainly long delay time and small dispersion, but the biggest disadvantage is that it is more difficult to manufacture than other structures.

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