[ANT] How large must the ground plane be for a monopole whip antenna?

Ideally the ground plane for a monopole whip antenna is a circle with the monopole ship in the center. The circle should have a diameter equal to lambda/4 (1/4 of wavelength).
However in practical designs this is rarely possible. So the general rule of tomb apply: Try to keep ground plane as large as possible.

Last Update: August 8, 2017  

January 11, 2017   1212    Antenna Q&A