phase-shift signal
101Phasenmodulation — Die „rote“ Sinusschwingung ist gegenüber der „blauen“ Sinusschwingung um ein Viertel der Periodendauer verzögert. Im komplexen zweiseitigen Frequenzspektrum zeigt sich das als eine 90° Drehung der beiden Spektrallinien, die den Träger darstellen …
102Doppler effect — Change of wavelength caused by motion of the source. An animation illustrating how the Doppler effect causes a car engine or siren to soun …
103Filter design — is the process of designing a filter (in the sense in which the term is used in signal processing, statistics, and applied mathematics), often a linear shift invariant filter, which satisfies a set of requirements, some of which are contradictory …
104Antenna (radio) — Whip antenna on car …
105Optical hybrid — A 90° optical hybrid is a six port device that is used for coherent signal demodulation for either homodyne or heterodyne detection. It would mix the incoming signal with the four quadratural states associated with the reference signal in the… …
106Metamaterial antenna — This Z antenna tested at the National Institute of Standards and Technology is smaller than a standard antenna with comparable properties. Its high efficiency is derived from the Z element inside the square that acts as a metamaterial, greatly… …
107DCF77 — Coordinates: 50°0′56″N 9°00′39″E / 50.01556°N 9.01083°E / 50.01556; 9.01083 …
108Continuous Tone-Coded Squelch System — In telecommunications, Continuous Tone Coded Squelch System or CTCSS is a circuit that is used to reduce the annoyance of listening to other users on a shared two way radio communications channel. It is sometimes called tone squelch. Where more… …
109Single-sideband modulation — (SSB) is a refinement of amplitude modulation that more efficiently uses electrical power and bandwidth. It is closely related to vestigial sideband modulation (VSB) (see below).Amplitude modulation produces a modulated output signal that has… …
110Ambiguity function — In pulsed radar and sonar signal processing, an ambiguity function isa two dimensional function of time delay and Doppler frequencychi( au,f) showing the distortion of an uncompensated matched filter (sometimes called pulse compression) due to… …
