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Frequency mixer. In electronics, a mixer, or frequency mixer, is an electrical circuit that creates new frequencies from two signals applied to it. In its most common application, two signals are applied to a mixer, and it produces new signals at the sum and difference of the original frequencies. Other frequency components may also be produced ...
Frequency mixer symbol used in schematic diagrams. A heterodyne is a signal frequency that is created by combining or mixing two other frequencies using a signal processing technique called heterodyning, which was invented by Canadian inventor-engineer Reginald Fessenden.
Frequency multiplier. In electronics, a frequency multiplier is an electronic circuit that generates an output signal and that output frequency is a harmonic (multiple) of its input frequency. Frequency multipliers consist of a nonlinear circuit that distorts the input signal and consequently generates harmonics of the input signal.
Local oscillator. In electronics, a local oscillator (LO) is an electronic oscillator used with a mixer to change the frequency of a signal. This frequency conversion process, also called heterodyning, produces the sum and difference frequencies from the frequency of the local oscillator and frequency of the input signal.
Given 3.0bcd MHz, mix with 24 MHz and filter to get 27.0bcd MHz, mix with 3.a MHz and filter to get 30.abcd MHz; divide by 10 and filter to get 3.0abcd MHz; feed to next stage to get another digit or mix up to 360.abcd MHz and start mixing and filtering with other frequencies in 1 MHz (30–39 MHz) and 10 MHz (350–390 MHz) steps.
This diagram describes the four-wave mixing interaction between frequencies f 1, f 2, f 3 and f 4. When three frequencies (f 1 , f 2 , and f 3 ) interact in a nonlinear medium, they give rise to a fourth frequency (f 4 ) which is formed by the scattering of the incident photons, producing the fourth photon.