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Local oscillator, the Glossary

In electronics, a local oscillator (LO) is an electronic oscillator used with a mixer to change the frequency of a signal.^[1]

33 relations: Allies of World War II, Atomic clock, Axis powers, Cable television, Crystal oscillator, Direct-conversion receiver, Electronic countermeasure, Electronic oscillator, Electronics, Foxhole radio, Frequency mixer, Frequency synthesizer, Frequency-division multiplexing, Heterodyne, Homodyne detection, Microwave, Microwave transmission, Modem, NE612, Optical heterodyne detection, Pentagrid converter, Phase noise, Radar detector, Radio receiver, Radio telescope, Satellite television, Set-top box, Superheterodyne receiver, Telecommunications link, Telemetry, Television licensing in the United Kingdom, Variable-frequency oscillator, World War II.
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Allies of World War II

The Allies, formally referred to as the United Nations from 1942, were an international military coalition formed during World War II (1939–1945) to oppose the Axis powers.

See Local oscillator and Allies of World War II

Atomic clock

An atomic clock is a clock that measures time by monitoring the resonant frequency of atoms.

See Local oscillator and Atomic clock

Axis powers

The Axis powers, originally called the Rome–Berlin Axis and also Rome–Berlin–Tokyo Axis, was a military coalition that initiated World War II and fought against the Allies.

See Local oscillator and Axis powers

Cable television is a system of delivering television programming to consumers via radio frequency (RF) signals transmitted through coaxial cables, or in more recent systems, light pulses through fibre-optic cables.

See Local oscillator and Cable television

Crystal oscillator

A crystal oscillator is an electronic oscillator circuit that uses a piezoelectric crystal as a frequency-selective element. Local oscillator and crystal oscillator are electronic oscillators.

See Local oscillator and Crystal oscillator

Direct-conversion receiver

A direct-conversion receiver (DCR), also known as homodyne, synchrodyne, or zero-IF receiver, is a radio receiver design that demodulates the incoming radio signal using synchronous detection driven by a local oscillator whose frequency is identical to, or very close to the carrier frequency of the intended signal. Local oscillator and direct-conversion receiver are radio electronics.

See Local oscillator and Direct-conversion receiver

Electronic countermeasure

An electronic countermeasure (ECM) is an electrical or electronic device designed to trick or deceive radar, sonar, or other detection systems, like infrared (IR) or lasers.

See Local oscillator and Electronic countermeasure

Electronic oscillator

An electronic oscillator is an electronic circuit that produces a periodic, oscillating or alternating current (AC) signal, usually a sine wave, square wave or a triangle wave, powered by a direct current (DC) source. Local oscillator and electronic oscillator are electronic oscillators.

See Local oscillator and Electronic oscillator

Electronics

Electronics is a scientific and engineering discipline that studies and applies the principles of physics to design, create, and operate devices that manipulate electrons and other electrically charged particles.

See Local oscillator and Electronics

Foxhole radio

A foxhole radio is a makeshift radio that was built by soldiers in World War II for entertainment, to listen to local radio stations using amplitude modulation.

See Local oscillator and Foxhole radio

Frequency mixer

In electronics, a mixer, or frequency mixer, is an electrical circuit that creates new frequencies from two signals applied to it. Local oscillator and frequency mixer are radio electronics.

See Local oscillator and Frequency mixer

Frequency synthesizer

A frequency synthesizer is an electronic circuit that generates a range of frequencies from a single reference frequency. Local oscillator and frequency synthesizer are electronic oscillators.

See Local oscillator and Frequency synthesizer

Frequency-division multiplexing

In telecommunications, frequency-division multiplexing (FDM) is a technique by which the total bandwidth available in a communication medium is divided into a series of non-overlapping frequency bands, each of which is used to carry a separate signal.

See Local oscillator and Frequency-division multiplexing

Heterodyne

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.

See Local oscillator and Heterodyne

Homodyne detection

In electrical engineering, homodyne detection is a method of extracting information encoded as modulation of the phase and/or frequency of an oscillating signal, by comparing that signal with a standard oscillation that would be identical to the signal if it carried null information.

See Local oscillator and Homodyne detection

Microwave

Microwave is a form of electromagnetic radiation with wavelengths shorter than other radio waves (as originally discovered) but longer than infrared waves.

See Local oscillator and Microwave

Microwave transmission

Microwave transmission is the transmission of information by electromagnetic waves with wavelengths in the microwave frequency range of 300 MHz to 300 GHz (1 m - 1 mm wavelength) of the electromagnetic spectrum.

See Local oscillator and Microwave transmission

Modem

A modulator-demodulator or most commonly referred to as modem is a computer hardware device that converts data from a digital format into a format suitable for an analog transmission medium such as telephone or radio.

See Local oscillator and Modem

NE612

The NE612 is an integrated circuit for processing of signals, such as in the transmission of radio signals. Local oscillator and NE612 are electronic oscillators.

See Local oscillator and NE612

Optical heterodyne detection

Optical heterodyne detection is a method of extracting information encoded as modulation of the phase, frequency or both of electromagnetic radiation in the wavelength band of visible or infrared light.

See Local oscillator and Optical heterodyne detection

Pentagrid converter

The pentagrid converter is a type of radio receiving valve (vacuum tube) with five grids used as the frequency mixer stage of a superheterodyne radio receiver.

See Local oscillator and Pentagrid converter

Phase noise

In signal processing, phase noise is the frequency-domain representation of random fluctuations in the phase of a waveform, corresponding to time-domain deviations from perfect periodicity (jitter).

See Local oscillator and Phase noise

Radar detector

A radar detector is an electronic device used by motorists to detect if their speed is being monitored by police or law enforcement using a radar gun.

See Local oscillator and Radar detector

Radio receiver

In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form.

See Local oscillator and Radio receiver

Radio telescope

A radio telescope is a specialized antenna and radio receiver used to detect radio waves from astronomical radio sources in the sky.

See Local oscillator and Radio telescope

Satellite television

Satellite television is a service that delivers television programming to viewers by relaying it from a communications satellite orbiting the Earth directly to the viewer's location.

See Local oscillator and Satellite television

Set-top box

A set-top box (STB), also known as a cable box, receiver, or simply box, and historically television decoder or a converter, is an information appliance device that generally contains a TV tuner input and displays output to a television set, turning the source signal into content in a form that can then be displayed on the television screen or other display device.

See Local oscillator and Set-top box

Superheterodyne receiver

A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed intermediate frequency (IF) which can be more conveniently processed than the original carrier frequency. Local oscillator and superheterodyne receiver are radio electronics.

See Local oscillator and Superheterodyne receiver

References

[1] https://en.wikipedia.org/wiki/Local_oscillator

Also known as Autogenerator, Local Oscillator Chain.