Below
are described two broadband antennas for the 145- MHz.
The antennas have low SWR at all 145- MHz Band also those ones
are covered nearest parts of the frequencies to the 145- MHz Band.
The antennas are easy to make and easy to tune.
Figure
1 shows design of the
Crest Antenna for 145- MHz. The antenna
has low SWR (less the 2.0:1.0) in the frequencies range from 135
up to 152- MHz. Figure 2 shows the impedance of the antenna in
the working range. Figure 3 shows the SWR of the antenna. Figure 4
shows the DD of the antenna.
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Figure
5 shows design of the
Twin Delta Antenna for 145- MHz. The
antenna has low SWR (less the 2.0:1.0) in the frequencies range
from 139 up to 150- MHz. Figure 6 shows the impedance of the antenna in
the working range. Figure 7 shows the SWR of the antenna. Figure 8
shows the DD of the antenna.
The MMANA models of the Crest
and Twin
Delta Antenna may be loaded:
http: // www.antentop.org/017/ur0gt_145_017.htm
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