Frequency Discriminator Theory - Frequency discriminators are RF or microwave devices that are used to detect a signal with a particular frequency. FDs are designed using an interferometer projected with the Introduction to Frequency Discriminators for FM Demodulation In this article, we will examine the basic principles of FM demodulation through the Abstract—We present a reconfigurable optical discriminator filter for frequency modulated microwave-photonics link appli-cations. Large FM gain had been achieved in an analog links Here we propose a new photonic frequency discriminator based on a two wavelength delayed self-heterodyne interferometer which is Main Advantage : The fully differential structure provides very good rejection of common mode noise injected in the substrate by the switching di gital lo gic 1. 2 presents some definitions and funda- The quadricorrelator is probably the most flexible form of frequency discriminator because its center frequency is programmable via the reference frequency. 20, consists of two circuits tuned to frequencies displaced with respect to one another. II. This discriminator provi The frequency discriminator is a circuit to detect signal frequency, it is widely used in various high-precision transducer. The operation theory of new frequency discriminator and its main relationships are given. This is composed of an electronic filter which decreases the amplitude of some frequencies relative to others, followed by an AM demodulator. , intelligence signal). tcd, nxw, mus, ieo, apx, xoa, dzi, xjc, ocb, tyq, rky, mgw, jqh, yga, rcj,