Active Inductor Circuits for Filtering in a Cable Tuner Circuit

An integrated circuit tuner front end, responsive to a tuner controller signal, for tuning to a designated information modulated signal from a plurality of multiplexed information modulated signals each in a predetermined band of frequencies, comprising:

• an input port for receiving the multiplexed information modulated signals;
• a first filter for passing all the multiplexed information modulated signals and for attenuating signals that are other than the multiplexed information modulated signals;
• a first amplifier for amplifying all the passed multiplexed information modulated signals from the first filter;
• a first IF filter for receiving the amplified and passed multiplexed information modulated signals from the first amplifier, the first IF filter for selecting at least one of a designated information modulated signal;
• a frequency conversion circuit for receiving a selected at least one of a designated information modulated signal and for converting a baseband frequency thereof;
• and,
• a second IF filter for receiving the converted signal from the frequency conversion circuit and for passing a single designated information modulated signal to an output port thereof, the integrated tuner circuit absent an amplifier circuit electrically between the first IF filter and the second IF filter.