systems include 15-inch (381 mm) standoff brackets for mounting on poles or tower legs from 1.5-inches (35 mm) to 7.5-inches (191 mm) OD.
For the radiation patterns test of the prototype, we have used a standard antenna
test set with a horn antenna as a source in an anechoic chamber.
To measure the radiation pattern and antenna gain according to the directions of the designed antenna, the standard antenna
and the designed antenna were rotated horizontally and vertically and the pattern and gain were measured in the four different aspects.
They are commonly employed as feed elements in satellite tracking systems or communication systems and serve as standard antenna
for calibration and gain measurement.
On the other hand, the standard antenna
method is less demanding of the quality of the site because if the standard antenna
has similar dimensions to the antenna under test, the unwanted site effects can mostly cancel.
In some studies we replaced the standard antenna
with an external TP-LINK antenna with better characteristics.
For a test flight outside of Reno, Nev., in June, the team painted an Iridium antenna on an airship that also carried a standard antenna
. Once the craft was aloft, the researchers received GPS signals using each antenna.
The problem was ultimately solved by convincing the manufacturer to modify the standard antenna
mount and feedline.
40.7% Direct TV satellite 25.7% Dish network satellite 33.2% Wireless cable 2% Cable 5.8%
The methods for adjusting amplitude and phase of each antenna element were also developed, including auxiliary hardware compatible with the standard antenna
control board and auxiliary software for parameter settings.
The signal was beamed from atop the Empire State Building, picked up by a standard antenna
, decoded by a set-top box, and displayed on a 56-inch widescreen TV.