Legacy converter filter with extended frequency range
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United States of America Patent
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Sep 13, 2016
Grant Date -
Dec 17, 2015
app pub date -
Jun 12, 2015
filing date -
Jun 12, 2014
priority date (Note) -
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Abstract
The present invention provides a converter filter that includes a bandstop frequency range to protect against overloading of the input circuits of legacy converter boxes from the relatively high power upstream return path signal between 5 and 85 MHz. The converter filter also functions to pass the downstream signal path with minimal loss and reflection. The converter filter comprises a circuit including a low pass filter and high pass filter in parallel with each other that operate to substantially pass signals in a first frequency band of approximately 5 to 52 MHz and a second frequency band of approximately 85 MHz to 2 GHz while substantially blocking signals in a third frequency band of approximately 52 MHz to 85 MHz.
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