PERANCANGAN ANTENA 5/8λ BERPOLARISASI CIRCULAR PADA BAND VHF (30-300 MHz)
ABSTRACT: Since Hertz and
Marconi, antennas have became increasingly important to our society until now
they are indispensable. They are everywhere: at home and workplaces, on cars
and aircraft, also in ships and satellites. So far most used antenna is an
antenna with a single polarization, the horizontal polarization or vertical
polarization only. The advantage of circular polarization is the radiation of
antenna can be well received by the vertical receiving antenna or horizontal
receiving antenna. The purpose of this research is to design and build a
circular polarized antenna. Then the values of the parameters measured using
Hewlett Packard 8656B Signal Generator as a transmitter and Hewlett Packard
8901A Modulation Analyzer as a receiver. Both measuring devices were used to
determine the frequency and power generated by the antenna. SX-1000 SWR meter
as a measuring VSWR and analog VU meters are used to determine the signal
strength of the antenna. The result shows that the antenna works well on a
predetermined frequency (144 MHz), has omni directional radiation pattern and its
VSWR is 1.09. The result of the antenna radiation can also be well received,
using vertical and horizontal polarization antenna. VU meter shows that the
highest value when antenna used as transmitter is 10 μV and 11 μV when antenna
is used as receiver antenna.
Penulis: YULI CHRISTYONO, IMAM
SANTOSO, BUDI SETIAWAN
Kode Jurnal: jptlisetrodd090093
