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Revision as of 02:04, 26 March 2017 edit786b6364 (talk | contribs)Extended confirmed users2,143 editsm Disambiguated: quadratic → quadratic function, linear → LinearityTag: Dispenser [2.4]← Previous edit Latest revision as of 19:03, 16 May 2017 edit undoChetvorno (talk | contribs)Extended confirmed users65,424 edits Merged article into Heterodyne 
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'''Heterodyne detection''' is a method of extracting information encoded as ] of the ] and/or ] of an oscillating signal, by comparing that signal with a standard or reference oscillation that would have a fixed offset in frequency and phase from the signal if it carried null information. "Heterodyne" signifies more than one frequency, in contrast to the single frequency employed in ]. The heterodyne technique is commonly used in ], ],<ref name="Issakov2010">{{cite book |last1=Issakov|first1=Vadim |title=Microwave Circuits for 24 GHz Automotive Radar in Silicon-based Technologies | chapter=Chapter 2 — Radar Systems|year=2010| pages=5–18 |doi=10.1007/978-3-642-13598-9_2}}</ref> ]<ref name="Baylon-FuentesHernandez-Nava2011">{{cite journal|last1=Baylon-Fuentes|first1=A.|last2=Hernandez-Nava|first2=P.|last3=Zaldivar-Huerta|first3=I. E.|last4=Rodriguez-Asomoza|first4=J.|last5=Garcia-Juarez|first5=A.|last6=Aguayo-Rodriguez|first6=G.|title=Microwave signal generation based on optical heterodyne and its application in optical telecommunication system|year=2011|pages=334–338|doi=10.1109/CONIELECOMP.2011.5749336}}</ref> and ].

The processed signals are most commonly produced by the reception of radiation in the form of either radio waves (see ]) or light (see ] or ]). The reference signal is known as the ]. The signal and the local oscillator are compared in the receiver using a type of technology suitable for the wavelength of the radiation. For ] signals, a ] may be used, while for ], a common mixer is a ], which has a response that is ] in ], and hence ] in ].

==See also==
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==References==
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Latest revision as of 19:03, 16 May 2017

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