Found in a 90s Electronic Design, this circuit employs CMOS functions to mix signals from two inputs. Capacitors and resistors depend on how the signals are to be sampled.
This circuit is from an 80's electronic component manual. It has the way to simulate an inductor...
This is the receiver for the previous circuit found in the November 1991 Radio Electronics...
This circuit was found in a Popular Electronics documentation from the 90s. It is possible to switch...