- #1
quicksilver123
- 173
- 0
- TL;DR Summary
- Coax vs open wire feed
Could I get a conceptual answer, supported by math, explaining why coax has less characteristic impedance than open wire feeds?I’m new to EE. Thanks for you patience.
Characteristic impedance is a measure of the resistance and reactance of a transmission line or medium. It is the ratio of voltage to current in a wave that is propagating through the line or medium.
Characteristic impedance is important because it determines the efficiency of signal transmission in a given medium. It also helps to match the impedance of the source and load in order to minimize signal reflections and maximize power transfer.
Characteristic impedance refers to the overall impedance of a transmission line or medium, while characteristic impedance differences refer to variations in impedance along the length of the line. These differences can cause signal reflections and distortions, which can affect the overall performance of the transmission line.
Characteristic impedance differences can be caused by changes in the physical properties of the transmission line, such as variations in its width or thickness, or by the presence of impedance-disrupting components like connectors or splices. These differences can also be caused by impedance mismatches between different sections of the transmission line.
Characteristic impedance differences can be minimized by using high-quality transmission lines with consistent physical properties, and by properly matching the impedance of the source and load. Additionally, using impedance-matching components like baluns and transformers can help to reduce reflections and distortions caused by characteristic impedance differences.