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:
“I went to a very militantly Republican grammar school and, under its influence, began to revolt against the Establishment, on the simple rule of thumb, highly satisfying to a ten-year-old, that Irish equals good, English equals bad.”
—Bernadette Devlin (b. 1947)
“He was the product of an English public school and university. He was, moreover, a modern product of those seats of athletic exercise. He had little education and highly developed muscles—that is to say, he was no scholar, but essentially a gentleman.”
—H. Seton Merriman (1862–1903)