Stub (circuit)

The stub (Stub) in the electrical engineering is a distributed constant track connected to a transmission line in parallel in a high frequency circuit. The name depends on a state branching off from a transmission line looking like a stump (Stub).

In the distributed constant track, seeing from an input edge, it becomes the capacitor by terminal load and the ratio for the wavelength of the Mayor of track and is used for an inductor as a substitute of a condenser and the coil to perform an impedance matching by a high frequency circuit because it is.

The thing which the tip throws open by a kind of the terminal load calls the thing which the open stub (Open stub), tip shunt with shortstop stub (Short stub).

Because a shape grows big, at the point of view in the implementation, I am often comprised on the printed circuit boards more than number GHz at the low frequency. In addition, I am known as a method to take the matching by the antenna production of the ham operator.

Allied item

• Distributed constant circuit

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