Method for stripping insertion loss of PCB transmission line
A technology of insertion loss and transmission line, applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve simple and effective peeling effect
Pending Publication Date: 2019-12-13
SHENNAN CIRCUITS
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Problems solved by technology
Therefore, in the PCB design, it is hoped to reduce the insertion loss of the PCB transmission line as much as possible, so that the signal can have a higher transmission rate and better transmission quality on the PCB. At present, industry engineers know that the insertion loss of the PCB transmission line is determined by the smooth conductor. Loss, roughness loss, and dielectric loss, but the proportion of these three parts to the overall loss and how to strip the overall insertion loss are rarely understood by engineers. There is almost no effective stripping of PCB transmission line insertion loss in the industry. method
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[0021] The application will be described in further detail below in conjunction with the accompanying drawings and embodiments. In particular, the following examples are only used to illustrate the present application, but not to limit the scope of the present application. Likewise, the following embodiments are only some of the embodiments of the present application but not all of them, and all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.
[0022] The insertion loss of the PCB transmission line is divided into three parts: smooth conductor loss, dielectric loss and roughness loss. Among them, the insertion loss is the signal attenuation caused by the introduction of other devices between the transmitter and receiver; the conductor loss is the insertion loss The attenuation part caused by the conductor; the dielectric loss is the attenuation part caused by the medium in the insertio...
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The invention discloses a method for stripping the insertion loss of a PCB transmission line, and the method comprises the steps: obtaining the related data of the PCB transmission line, and the related data comprises dielectric parameters, physical dimensions and the insertion loss; establishing a first model according to the physical size, and extracting smooth conductor loss of the PCB transmission line through simulation; establishing a second model on the basis of the first model, and extracting the dielectric loss of the PCB transmission line through simulation; obtaining the roughness loss of the PCB transmission line according to the insertion loss, the smooth conductor loss and the dielectric loss. The insertion loss of the PCB transmission line can be efficiently and accurately stripped into smooth conductor loss, dielectric loss and roughness loss; complex measurement, a large amount of mathematical formula calculation and theoretical inference are avoided, the PCB transmission line insertion loss stripping process is simplified, and the PCB transmission line insertion loss stripping efficiency is improved.
Description
technical field [0001] The present application relates to the field of insertion loss of PCB transmission lines, in particular to a method for stripping the insertion loss of PCB transmission lines. Background technique [0002] A printed circuit board (PCB) is a carrier for electronic components and a provider of electrical connections for electronic components. [0003] In the printed circuit board, the signal is transmitted through the transmission line. Due to the existence of the transmission conductor, the surrounding medium and the skin effect, the transmission of the signal in the PCB board will cause the signal energy to attenuate. The attenuation can be measured by the insertion loss index. Insertion loss is divided into conductor loss and dielectric loss. Conductor loss is the loss caused by the metal signal line itself, which is composed of smooth conductor loss and surface roughness loss. Smooth conductor loss is directly related to the conductivity of the cond...
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Inventor 陆平
Owner SHENNAN CIRCUITS