Low profile, broad band monopole antenna with heat dissipating ferrite/powder iron network and method for constructing the same
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United States of America Patent
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Jul 15, 2014
Grant Date -
May 10, 2012
app pub date -
Jul 21, 2010
filing date -
Jul 24, 2009
priority date (Note) -
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Abstract
An antenna operable over a predetermined range of frequency includes a transmission line, a transformer network connected to one end of the transmission line, and at least one ferrite/powder iron network connected to an opposite end of the transformer network. The ferrite/powder iron network changes the effective electrical length of the antenna such that as the frequency of operation changes, the current distribution above and below the network changes in corresponding manner. A second ferrite/powder iron network may be serially positioned with respect to the other network, wherein both function to reduce the current thereabove. Accordingly, as the frequency of operation increases, the electrical height of the antenna decreases. The network also encompasses a way to safely dissipate otherwise destructive heat created by the operation of the antenna system at high radio-frequency power.
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