 Using
patented technology and digital architecture, Dotcast’s technology
allows antenna manufacturers to provide reception that is as much
as 225 times more powerful than traditional rabbit ears, yet fits
in a sleek design smaller than 1/3 the size of a typical indoor TV
antenna. The result? Off-air digital TV reception is radically improved
in neighborhoods and buildings where digital reception is not now
feasible.
Dotcast’s antenna technology:
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Combines a simple electric field
(e-field) sensing structure, coupled to an electronic amplifier,
which presents very high impedance across its input terminals.
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This amplifier transfers any voltage presented
across its input to a resistive load across its output. |
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As the amplifier input impedance approaches
infinity, the amount of power consumed from the sensing structure
approaches zero. |
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Since the electric field sensing structure responds
only to the integral of the electric field applied along the
length of the structure, and presents a voltage proportional
to the applied field at the sensing terminals, it has an inherently
wide bandwidth, and, coupled with the high-impedance amplifier,
an enormous power gain. |
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Since it is a non-linear system, achieving a
multiple octave bandwidth, such as required for broadcast television
reception, is very simple. |
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Antennas are manufactured with a scatterplate,
which reduces reflections and multi-path reception issues. |
Antennas manufactured with Dotcast technology will
deliver significant improvements in digital and high-definition
“over-the-air” reception. These antennas will also enable
digital television (DTV) off-air reception in many neighborhoods
and buildings where it is not now feasible. Analog broadcast reception
is also improved.
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