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The Quarter-wave stub


The Quarter-wave stub

The Quarter-wave stub can be used for many purposes. If it is left with an open end it can be used as a notch filter to attenuate certain frequencies

The Quarter-wave stub

Antenna Calculator Links

Antenna Trap Design
Enter desired frequency MHz, Results inductance L (uH) Capacitance C (pF)

Butterworth Filter
Select the desired parameters below and press the synthesize button to design your Butterworth filter

Calcul antenne helice
Calculation of Helical Antenna with frequency of work, Number of turns, Wavelength m

Antenna Modeling Software, AC6LA