Here is an image of an LNB circuit:
There is some parts in this circuit that I cannot know what they are. Marked them using blue circles. What are these parts and what do they do?
They looks like the Crest of Roman Gelea :)
Answer
That’s a microstrip radial stub these are used for impedance matching when a low-impedance stub is needed. Their shape allows for a narrow connection point to the main microstrip.
When used in pairs these are also known as butterfly stubs, or bowtie stubs.
As any other stub, these are used to match the input/output impedance of a circuit element to another, to maximize power transfer and minimize reflections. These also “tune” a microstrip, as their impedance-matching characteristics is wavelength-dependent.
No comments:
Post a Comment