Patent ID: 6737935
Filing Date: 2004-05-18
Classification: H01P,H03H,H04N

Abstract:
A bandstop filter for CATV applications having an input for receiving signals having frequencies in a predetermined range and an output carrying signals having frequencies below a first value within said range and above a second value, higher than said first value, within said range with signals having frequencies between said first and second values being blocked from reaching said output, said filter comprising:a) a first diplexer to which said input is connected at a first node; b) a lowpass filter having a first input end connected to said first node and a first output end, said lowpass filter having components between said first input and output ends which pass signals having frequencies below said first value and block signals having frequencies above said first value; c) a highpass filter having a second input end connected to said first node and a second output end, said highpass filter having components between said second input and output ends which pass signals having frequencies above said second value and block signals having frequencies below said second value; and d) a second diplexer having a second node to which said first output end of said lowpass filter, said second output end of said highpass filter and said output are all connected.