Apparatus and method for processing a radio frequency signal

摘要

Many advanced signal receiving devices include more than one tuner. An apparatus is described that includes a first circuit operating as a first portion of a signal attenuator, a second circuit operating as a second portion of the signal attenuator and outputting a first differential output signal, and a third circuit also operating as the second portion of the signal attenuator and outputting a second differential output signal. A method is described including receiving a signal, splitting the received signal to produce a first output signal and a second output signal, the splitting being performed using a differential signal format and further being performed using only at least one of a resistor, capacitor, and inductor, and outputting the first output signal in a differential signal format and the second output signal in a differential signal format.

主权项

1. An apparatus for dividing signal power comprising:
a first circuit coupled to an input, the first circuit operating as a first portion of a signal attenuator for an input signal; a second circuit coupled to the output of the first circuit, the second circuit operating as a second portion of the signal attenuator for the input signal and outputting a first differential output signal; and a third circuit coupled to the output of the first circuit, the third circuit also operating as the second portion of the signal attenuator for the input signal and outputting a second differential output signal, wherein the first circuit comprises two series elements and one shunt element, the second circuit comprises two series elements and one shunt element, and the third circuit comprises two series elements and one shunt element.