Matching stub
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Impedance Matching and Smith Charts - Fermilab
uspas.fnal.govA shorted stub transforms to an infinite impedance at odd multiples of a quarter wavelength. A quarter-wave stub is a convenient way of supporting an inner conductor without an insulator, and accessing the inner conductor with water cooling, for example. Stubs are also used in matching a load to a source by introducing an intentional reflection.
Impedance Calculations - University of New Hampshire
unh.eduSingle-Stub Matching As shown previously, the input impedance (admittance) of a shorted transmission line (a “stub”) is purely reactive. By placing a stub in parallel with another transmission line, the reactive component can be cancelled, leaving a pure-real input impedance. This can be used to achieve a perfect match. Z 0 = 50 Z in = 50 Z L d
422 and 485 Overview and System Configurations
www.ti.com30 Stub Cables Connected to the Main Backbone..... 22 31 Point-to-PointConnection ... matching termination impedance to Zo often is difficult to achieve and is application dependent, typically, ±20% is sufficient. Also, up to nine additional receivers can be …