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In particular for low frequencies this antenna form is interesting. [4] The angle of the slope is usually between 45°–60° and the lower end of the wire is at least 1 ⁄ 6 wavelength above the electrical ground .
A sloper or sloper dipole is a half-wave wire slanting down from a single elevated mounting point. It is usually fed at its center with the feedline cable itself slanting away at a perpendicular counter-slope from the sloping antenna wire, towards a small pole or a ground anchor near the base of the mast.
A ground plane antenna. The white, downward sloping arms are radials. When the radials are mechanically incorporated into the structure of a small antenna it is called a ground plane antenna. For these antennas the radials slope off at an angle and are also called a skirt.
The G5RV antenna is a dipole antenna fed indirectly, through a carefully chosen length of 300 Ω or 450 Ω twin lead, which acts as an impedance matching network to connect (through a balun) to a standard 50 Ω coaxial transmission line. The sloper antenna is a slanted vertical dipole antenna attached to the top of a single tower. The element ...
The trideco antenna is a huge specialized umbrella antenna used in a few high power military transmitters at very low frequency (VLF). [5] [6] In a conventional umbrella antenna, the use of the sloping guy wires as the capacitive top load has some disadvantages: First, since the umbrella wires must be anchored to the ground, their length is ...
In a slanted range, the receive antenna is mounted higher above ground than the AUT is, either by having the earth surface of the range sloping downward from the AUT mount, or by placing the receive antenna on a much higher mast. The sloping earth (either actual or effective) serves as a means to eliminate or reduce interference from ...