The simple broadband TV antenna works at the 580- 760- MHz. Passband of the antenna is 180- MHz.
Antenna has input impedance 300- Ohm at the pass
band.
The Design also can modified from Band frequency 470-806 and with impedance 50 Ohm.
Antenna may be used with antenna amplifier
that has such input impedance. Antenna may be used
with coaxial cable with broadband transformer.
The antenna is critical to any nearby metal subjects. Place the antenna with isolator connected to Antenna body and tower or antenna holder.
They can destroy the DD of the antenna. Space in 50
cm near the antenna should be free from such metal
or conductive subjects. If antenna is used for reception
purposes the best way is place low noise amplifier at
the antenna terminal.
LNA or Low Noise Amplifier can be made with 2SC3358 or 2SC3355, Low Noise Wideband Amplifier 0 - 1 GHz
Figure 1 shows view of the antenna. Figure 2 shows
design of the antenna. Figure 3 shows impedance of
the antenna (antenna placed at 7- meter above the
real ground). Figure 4 shows SWR of the antenna
(antenna placed at 7- meter above the real ground).
Figure 5 shows DD of the antenna (antenna placed at
7- meter above the real ground).
The MMANA model of the Broadband TV Antenna
may be loaded: http: //
www.antentop.org/018/ur0gt_tv_018.htm (Source : Antentop with modification in content)
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