What is stub length?
In microwave and radio-frequency engineering, a stub or resonant stub is a length of transmission line or waveguide that is connected at one end only. The free end of the stub is either left open-circuit, or short-circuited (as is always the case for waveguides).
What is stub length in PCB?
The length of the stub itself is the main culprit that causes the resonant peak to appear at lower frequencies. In a typical 1.6mm PCB the maximum stub length would be somewhere around 1.2mm – 1.3mm so the resonant frequency for such stubs will be quite high.
What is a shorted stub?
3 Short-Circuited Stub. A stub is a section of open-circuited or short-circuited transmission line and is used as a series or shunt element in a microwave circuit. There are several representations. A shorted stub is shown in Figure 2.4.
What is stub in power system?
STUB Protection is simple overcurrent protection it is used to protect the power system transmission line when the line isolator is in open condition. STUB protection is mainly required in one and half breaker busbar schemes.
What is stub in impedance matching?
Stub tuning is an impedance matching technique, when an open-circuited or short-circuited transmission line is connected to the main transmission line. A stub is usually made as part of circuit which allows the avoidance of lumped elements.
What is series stub?
Series Stub Like the name implies, a shunt stub of some unknown length will be placed in parallel with the transmission line at some point near the load, the parameters of which we will generate using a Smith chart.
What is a stub on PCB?
A Little Background on a Big Problem To begin, a stub is a branch off the main line of a transmission line. If it’s the right length, it will function as a short circuit at some frequency.
What is a stub in it terms?
A stub is a small program routine that substitutes for a longer program, possibly to be loaded later or that is located remotely. For example, a program that uses Remote Procedure Calls ( RPC ) is compiled with stubs that substitute for the program that provides a requested procedure.