A Simple Product Detector
The simplest form of product detector mixes (or hetrodynes) the RF or IF signal with a locally derived carrier (the Beat Frequency Oscillator, or BFO) to produce an audio frequency copy of the original audio signal and a mixer product at twice the original RF or IF frequency. This high-frequency component can then be filtered out, leaving the original audio frequency signal.
Read more about this topic: Product Detector
Famous quotes containing the words simple and/or product:
“Christina Bailey: I was just thinking how much you can tell about a person from such simple things. Your car, for instance.
Mike Hammer: Now what kind of message does it send you?
Christina: You have only one real, lasting love.
Mike: Now who could that be?
Christina: You. You’re one of those self-indulgent males who thinks about nothing but his clothes, his car, himself. I’ll bet you do push-ups every morning just to keep your belly hard.”
—A.I. (Albert Isaac)
“The end product of child raising is not only the child but the parents, who get to go through each stage of human development from the other side, and get to relive the experiences that shaped them, and get to rethink everything their parents taught them. The get, in effect, to reraise themselves and become their own person.”
—Frank Pittman (20th century)