Full Form of 1/4WA
| Full Form: | Quarter Wave Antenna |
|---|---|
| Category: | Academic & Science |
| Sub Category: | Amateur Radio |
What is 1/4WA Full Form?
1/4WA full form is Quarter Wave Antenna.
What is Quarter Wave Antenna?
As the name suggests the quarter wave vertical antenna consists of a quarter wavelength vertical element. The antenna is what is termed "un-balanced" having one connection to the vertical element and using an earth connection or simulated earth connection to provide an image for the other connection.
The voltage and current waveforms show that at the end the voltage rises to a maximum whereas the current falls to a minimum. Then at the base of the antenna at the feed point, the voltage is at a minimum and the current is at its maximum. This gives the antenna a low feed impedance. Typically this is around 20Ω.