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Number used to evaluate the performance of an amplifier
Noise figure (NF) and noise factor (F) are figures of merit that indicate degradation of the signal-to-noise ratio (SNR) that is caused by components in
Noise_figure
A noise-figure meter is an instrument for measuring the noise figure of an amplifier, mixer, or similar device. An example instrument is the 1983-era Agilent
Noise-figure_meter
available noise power density (the noise is thermal noise, Johnson noise). As a numerical example: A receiver has a bandwidth of 100 MHz, a noise figure of 1
Minimum_detectable_signal
Signal amplifier that doesn't significantly degrade the signal-noise ratio
factor of two (a 3 dB noise figure (NF)). Although LNAs are primarily concerned with weak signals that are just above the noise floor, they must also
Low-noise_amplifier
Level of noise power introduced by a component or source
the definition of a system's noise factor or noise figure. The noise factor specifies the increase in noise power (referred to the input of an amplifier)
Noise_temperature
Telecommunication formula by Harald T. Friis
matched at each stage). The total noise factor can then be used to calculate the total noise figure. The total noise factor is given as F total = F 1 +
Friis_formulas_for_noise
Receiving device on satellite dishes
expressed as the noise figure (or sometimes noise temperature). This is the signal-to-noise ratio at the input divided by the signal-to-noise ratio at the
Low-noise_block_downconverter
Electrical noise due to thermal vibration within a conductor
Johnson–Nyquist noise (thermal noise, Johnson noise, or Nyquist noise) is the voltage or current noise generated by the thermal agitation of the charge
Johnson–Nyquist_noise
Circuit that produces electrical noise
generators are used to test signals for measuring noise figure, frequency response, and other parameters. Noise generators are also used for generating random
Noise_generator
Method for reducing unwanted sound
Active noise control (ANC), also known as noise cancellation (NC), or active noise reduction (ANR), is a method for reducing unwanted sound by the addition
Active_noise_control
Cascade of electronic components
The key electrical parameters for an RF chain are system gain, noise figure (or noise factor) and overload level. Other important parameters, related
RF_chain
Noise generated by an atmosphere
Atmospheric noise is radio noise, or "static", caused by natural atmospheric processes, primarily lightning discharges in thunderstorms. On a worldwide
Atmospheric_noise
Device generating calibrated broadband noise for RF and microwave measurements
microwave frequencies. Radio noise sources are used primarily as reference standards in the measurement of the noise figure of amplifiers, radio receivers
Radio_noise_source
Random fluctuation in an electrical signal
In electronics, noise is an unwanted disturbance in an electrical signal. Noise generated by electronic devices varies greatly as it is produced by several
Noise_(electronics)
to as Y) the noise figure of the amplifier can be determined without having to measure the amplifier gain. Any amplifier generates noise. In a radio receiver
Excess_noise_ratio
Instrument that measures the network parameters of electrical networks
measurement of noise figure. The vector error correction permits higher accuracy than is possible with other forms of commercial noise figure meters. Bode
Network_analyzer_(electrical)
Exterior structure on infrastructure used to prevent loud sounds from escaping
A noise barrier (also called a soundwall, noise wall, sound berm, sound barrier, or acoustical barrier) is an exterior structure designed to protect inhabitants
Noise_barrier
Method for converting signals between digital and analog
and pattern noise in delta-sigma converters. However, adding dithering noise (Figure 3) reduces such distortion by making quantization noise more random
Delta-sigma_modulation
Level of background noise in a signal
as incidental noise. If the dominant noise is generated within the measuring equipment (for example by a receiver with a poor noise figure) then this is
Noise_floor
Device for electrically amplifying the power of an electrical radio frequency signal
that the noise power is one hundred times larger than that caused by the source. The noise figure in this case is 20 dB. To obtain low noise figure the impedance
Valve_RF_amplifier
Device that amplifies an optical signal
calculation of the noise figure. For the electrical measurement method, the detected photocurrent noise is evaluated with a low-noise electrical spectrum
Optical_amplifier
Topics referred to by the same term
appearance Figure (music), distinguished from musical motif Noise figure, in telecommunication Dance figure, an elementary dance pattern A person's figure, human
Figure
base transceiver stations. A TMA reduces the base transceiver station noise figure (NF) and therefore improves its overall sensitivity; in other words the
Tower_Mounted_Amplifier
Process of removing noise from a signal
Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort
Noise_reduction
Excessive displeasing noise
Noise pollution, is the propagation of noise or sound with potential harmful effects on humans and animals. The main sources of outdoor noise worldwide
Noise_pollution
Technical specifications and detailed information on the valve audio amplifier
noise is 1/101/2 lower than the sources's own noise, and the noise figure is ~1 dB. For a low-impedance source of 250 Ω, on the other hand, the noise
Valve audio amplifier technical specification
Valve_audio_amplifier_technical_specification
Ratio of the fundamental signal to the output's strongest spurious signal
input of a receiver, which can be calculated through a knowledge of the noise figure and the input signal bandwidth of the receiver or the system. The difference
Spurious-free_dynamic_range
Types of noise
science Seismic noise, random tremors of the ground Noise figure, the ratio of the output noise power to attributable thermal noise Ambient noise level, the
Noise_(spectral_phenomenon)
Numeric statement of performance
which a 50% detection probability is achieved Noise figure of a radio receiver The thermoelectric figure of merit, zT, a material constant proportional
Figure_of_merit
Microwave network module
array (PESA) Gain: The phase shifter amplifies while phase shifting Noise figure (NF) Reciprocity: not reciprocal Passive: Applications: active electronically
Phase_shift_module
Study and modification of the noise and vibration characteristics of vehicles
Noise, vibration, and harshness (NVH), also known as noise and vibration (N&V), is the study and modification of the noise and vibration characteristics
Noise, vibration, and harshness
Noise,_vibration,_and_harshness
Health consequences of exposure to elevated sound levels
Noise health effects are the physical and psychological health consequences of regular exposure to consistent elevated sound levels. Noise from traffic
Health_effects_from_noise
In signal processing, unwanted modifications to a signal
Carrier-to-noise ratio, the signal-to-noise ratio of a modulated signal Noise power Noise figure Noise-equivalent flux density, a measure of noise in astronomy
Noise_(signal_processing)
Amplifier that converts current to voltage
transistor for the gain element. This has been done where a very low noise figure was required. Operational transconductance amplifier – converts differential
Transimpedance_amplifier
Gilbert cell component that is no longer in production
cell” multiplier configuration which provides both a gain of 14 dB and a noise figure of 5 dB at 45 MHz. The IC belongs to a family of the following ICs: NE602
NE612
cost, frequency, gain, large-scale integration, lifetime, linearity, noise figure, packaging, power handling, power consumption, reliability, ruggedness
Radio-frequency microelectromechanical system
Radio-frequency_microelectromechanical_system
Electronic systems with a continuously variable signal
itself will add to the noise according to its noise figure. A number of factors affect how precise a signal is, mainly the noise present in the original
Analogue_electronics
Strategies to reduce noise pollution or its impact
Noise control or noise mitigation is a set of strategies to reduce noise pollution or to reduce the impact of that noise, whether outdoors or indoors.
Noise_control
Motor vehicle
name of the bigger engined LNA stood for Athlétique (Athletic). Its noise figure is 69 decibels. The LN was introduced in July 1976. It combined the bodyshell
Citroën_LNA
Electronic amplifier that converts weak signal into strong signal
the final signal is determined by the SNR of the input signal and the noise figure of the preamplifier. Three basic types of preamplifiers are available:
Preamplifier
US long-range C-band instrumentation radar
uncooled parametric amplifiers and a system noise temperature of 440 K (167 °C; 332 °F) giving it a noise figure of 4 dB. A major feature of the radar was
AN/FPQ-6
Methods to reduce sound pressure
absorption, or using active anti-noise sound generators. Acoustic quieting and noise control can be used to limit unwanted noise. Soundproofing can reduce the
Soundproofing
Electrode used to control electron flow within a vacuum tube
The noise figure of a valve is inversely proportional to its transconductance; higher transconductance generally means lower noise figure. Lower noise can
Control_grid
Russian fighter jet radar
more powerful. While the hybrid phased array antenna is retained, the noise figure is slightly worse at 3.5 dB, but the receiver has four rather than three
Irbis-E
Circuit that creates new frequencies from two signals
characterized by their properties such as conversion gain (or loss), noise figure and nonlinearity. Nonlinear electronic components that are used as mixers
Frequency_mixer
South Korean anti-ballistic missile system
speeds. Operating frequency: S-band (2–4 GHz) Tx gain: 10 dB ± 0.5 dB Rx noise figure: <4 dB Phase range: 6 bits Attenuation range: 6 bits The L-SAM battery
L-SAM
Method for determining noise temperature
(see figure). The slope of this line is equal to the amplifier power gain. The x intercept of the line is equal to the negative of the amplifier noise temperature
Y-factor
Radio receiver subsystem
contaminating them with noise, so that they can stay above the noise level in succeeding stages. It must have a very low noise figure (NF). The RF amplifier
RF_front_end
Topics referred to by the same term
top-level domain for Norfolk Island NF file format, used by TRUMPF machines Noise figure, in radio and radar signal processing Normal forms, criteria for determining
NF
Noise control by legal regulation of noise-producing items
States Noise Control Act of 1972, other local and state governments passed further regulations. A noise regulation restricts the amount of noise, the duration
Noise_regulation
ISSN 0021-8979. Noise Noise (audio) – residual low level "hiss or hum" Noise (electronic) – related to electronic circuitry. Noise figure – the ratio of
Generation–recombination noise
Generation–recombination_noise
KF-21 Boramae fire-control radar
low-noise amplifier (LNA), and 6-bit phase shift technology. Operating frequency: X-band (8–12 GHz) Tx gain: >36 dB Rx gain: >26 dB Noise figure: <4.5
APY-016K
Noise power per unit of bandwidth
important figure-of-merit ratios, such as carrier-to-noise-density ratio as well as Eb/N0 and Es/N0. If the noise is one-sided white noise, i.e., constant
Noise_spectral_density
Numerical measures that characterize amplifier properties and performance
much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor
Amplifier_figures_of_merit
Non-linear digital filtering technique to remove noise
digital filtering technique, often used to remove noise from an image, signal, and video. Such noise reduction is a typical pre-processing step to improve
Median_filter
American technology company
D-Series handheld analyzer with 120-MHz gap-free IQ data transfer Noise figure and phase noise analyzers Signal sources RF vector transceivers Network analyzers
Keysight
Noise figure in optics
In optics the noise-equivalent flux density (NEFD) or noise-equivalent irradiance (NEI) of a system is the level of flux density required to be equivalent
Noise-equivalent_flux_density
Object detection system using radio waves
the noise. The noise figure is a measure of the noise produced by a receiver compared to an ideal receiver, and this needs to be minimized. Shot noise is
Radar
Hearing loss caused by an inner ear or vestibulocochlear nerve defect
environmental noise, or noise-induced hearing loss. Exposure to a single very loud noise, such as a gunshot or bomb blast, can cause noise-induced hearing
Sensorineural_hearing_loss
power Noise figure Noise floor Noise gate Noise generator Noise level Noise measurement Noise power Noise print Noise shaping Noise temperature Noise wall
List_of_noise_topics
French military radar family
in the band (λ = 3 cm), is a 4J 50 type magnetron. The receiver has a noise figure of 9 dB, with mixers and preamplifiers. The entire system consists of
Cyrano_radar_family
Electronic testing device
average noise level is fed there will be a 3 dB display. To increase the sensitivity of the spectrum analyzer a preamplifier with lower noise figure may be
Spectrum_analyzer
Expression concerning electronic oscillators
"noise figure", but this is misleading." John van der Merwe, An Experimental Investigation into the Validity of Leeson's Equation for Low Phase Noise Oscillator
Leeson's_equation
American electrical engineer (born 1951)
Circuits Best Paper Award) "A blocker-tolerant wideband noise-cancelling receiver with a 2dB noise figure" (San Francisco, CA. Distinguished Technical Paper
M._C._Frank_Chang
Statistical filter
buried in seasonality and noise. Figure 2 is a plot of a seasonal sine wave with amplitude of 1 unit, normally distributed noise (σ = 1), and a base signal
Kolmogorov–Zurbenko_filter
Type of parabolic antenna
feet (3.0 m) in diameter. As the front-end technology improved and the noise figure of the LNBs fell, the size shrank to 8 feet (2.4 m) a few years later
Satellite_dish
(e.g., better antenna locations and/or shorter paths); lower receiver noise figure; improved error correction coding (FEC); reduced interference; or a lower
Link_margin
Noise that reduces quantization error
Dither or dithering is an intentionally applied form of noise used to randomize quantization error, preventing large-scale patterns such as color banding
Dither
Improvisational game show on Dropout
Make Some Noise is an American improvisational comedy game show on Dropout, created and hosted by Sam Reich. The show is a spin-off of the Dropout game
Make_Some_Noise_(TV_series)
United States defense standard
Open loop performance 4005.1 Output performance 4006.1 Power gain and noise figure 4007 Automatic gain control range 5001 Parameter mean value control 5002
MIL-STD-883
Silicon NPN transistors
the family). Noise figure (at 1 kHz, for a 2 kilohm source, BW = 200 Hz, IC=0.2 mA/VCE=5 V) is <10 dB for those not tabulated as "Low Noise". All types
BC108_family
High-precision voltage reference
output voltage ranges from 7 to 7.5V on a chip-to-chip basis, with a noise figure of 1.2 μV peak to peak and a long-term drift of 2 μV/√kHr. The LTZ1000
LTZ1000
Noise removal process during image processing
known as total variation regularization or total variation filtering, is a noise removal process (filter). It is based on the principle that signals with
Total_variation_denoising
Damping unwanted vibrations of machinery
that the reception of noise by the observer is minimized. Acoustic quieting might consider: Noise generation: by limiting the noise at its source, Sympathetic
Acoustic_quieting
Device for producing coherent EM waves in the sub-visible spectrum
whole system noise temperature looking at cold sky (2.7 kelvin in the microwave band) was 17 kelvin. This gave such a low noise figure that the Mariner
Maser
Type of field-effect transistor
device is equivalent to a normally open (off) switch. Due to their low noise figure in the RF region, and better gain, these devices are often preferred
MOSFET
French environmental non-profit organization
environmental organization responsible for monitoring the environmental noise in the Paris agglomeration. It was founded in 2004. Bruitparif is a non-profit
Bruitparif
prevent signals from being obscured by thermal noise. A very good receiver design may have a noise figure of only a few times the theoretical minimum for
Radio_receiver_design
Smoothing filler for images
A bilateral filter is a non-linear, edge-preserving, and noise-reducing smoothing filter for images. It replaces the intensity of each pixel with a weighted
Bilateral_filter
Problem in naval architecture
On maritime vessels, noise and vibration are not the same but they have the same origin and come in many forms. The methods to handle the related problems
Noise and vibration on maritime vessels
Noise_and_vibration_on_maritime_vessels
When a particle's interactions with a material cause it to emit new particles
tube size, increasing the transconductance of the tube and reducing its noise figure. A typical such "orbital beam hexode" was the RCA 1630, introduced in
Secondary_emission
Effect in signal processing
leakage. Figure 3 depicts the effects of three different window functions on the same data set, comprising two equal strength sinusoids in additive noise. The
Spectral_leakage
United States legislation
between the UHF and VHF television services, including a 14 dB maximum UHF noise figure for television receivers. While the first U.S. commercially licensed
All-Channel_Receiver_Act
Radio telescope array
in transistors with a low-enough noise figure at room temperature to remove the need for cooling of the input low-noise amplifier (LNA). In addition, very
Deep_Synoptic_Array
mapping by ambient noise tomography is the mapping underground geological structures under the assistance of seismic signals. Ambient noise, which is not associated
Subsurface mapping by ambient noise tomography
Subsurface_mapping_by_ambient_noise_tomography
Topics referred to by the same term
Look up noise in Wiktionary, the free dictionary. Noise is any unwanted sound. More broadly, noise (spectral phenomenon) describes many types of random
Noise_(disambiguation)
antenna directly contributes to the losses the system—including the system noise figure. Other common RF system components such as filters, attenuators, splitters
Mismatch_loss
Electronic circuit structure
reducing amplifier output power, increasing reflections, worsening noise figure, causing amplifier instability, and providing undesirable feedback paths
Via_fence
Family of software-defined radios
flew on VAP. These include reduction of SWaP, improved robustness, lower noise, higher speed signal conversion and processing, and better signal acquisition
Frontier_Radio
Ground-based monopulse single object tracking radar
within 0.001 duty cycle limitation of transmitter. Radar receiver data - Noise Figure: 11 dB Intermediate Frequency: 30 MHz Bandwidth: 8 MHz Narrow Bandwidth:
AN/FPS-16 Instrumentation Radar
AN/FPS-16_Instrumentation_Radar
Electronic device/component that increases the strength of a signal
a tiny amount of power to achieve very high gain, maintaining a good noise figure at the same time. Video amplifiers are designed to process video signals
Amplifier
Chemical compound
Retrieved July 26, 2024. Kaler, Rajneesh; Kaler, R.S. (2011). "Gain and Noise figure performance of erbium doped fiber amplifiers (EDFAs) and Compact EDFAs"
Erbium(III)_oxide
1985 novel by Don DeLillo
White Noise is the eighth novel by Don DeLillo, published by Viking Press in 1985. It won the U.S. National Book Award for Fiction. White Noise is a cornerstone
White_Noise_(novel)
Experiment undertaken on the Apollo 17 mission
power (W) 130 118 95 Antenna effective Gain (dB one-way) –0.8 –0.7 +7.3 Noise Figure (dB) 11.4 11.4 10.0 Pulse Repetition Frequency (Hz) 397 397 1984 Acquisition
ALSE
Radar tracking system
Receiver noise figure 14 dB Receiver threshold sensitivity −132 dBm Predetection bandwidth 100 kHz Threshold noise bandwidth 600 Hz Strong signal noise bandwidth
ODOP
Definitions of terms used in amateur radio
two different signal durations, called dots and dashes. NB Noise Blanker NF Noise Figure NiCd Nickel-Cadmium, a type of rechargeable battery NiMH Nickel-Metal
Glossary_of_amateur_radio
Type of radar system
filter), N = noise figure. This equation is derived by combining the radar equation with the noise equation and accounting for in-band noise distribution
Pulse-Doppler_radar
Radar system that does not transmit
must have a low noise figure, high dynamic range and high linearity. Despite this, the received echoes are normally well below the noise floor and the system
Passive_radar
Transmission of sound through indirect pathways in buildings
Flanking transmission, also known as noise flanking, a flanking path, or indirect sound transmission, is the transmission of sound between spaces through
Flanking_transmission
of a lower frequency (65.8 to 74 MHz) and allowed for less stringent noise figure requirements for receiver components compared to the higher frequency
6N14P
NOISE FIGURE
NOISE FIGURE
Male
Norse
Old Norse name HJORTR means "hart, stag."
Boy/Male
French
Forest.
Male
Norse
Old Norse name YNGLING means "descendant of Ing."
Male
Norse
Old Norse name SVEINN means "boy."
Male
Norse
Old Norse name composed of the name of the god Thor and the word gn�r "grumble, noise," hence "voice of Þórr."
Male
Norse
Old Norse name ÃRNI means "eagle."
Male
Norse
Old Norse form of Hebrew David, DAVIÃ means "beloved."
Girl/Female
Australian, French, German
Renowned in Battle
Female
Norse
Variant spelling of Old Norse Siv, SIF means "bride."
Male
Celtic
, snipe(?).
Girl/Female
Australian, Nigerian
God will be Yours
Female
French
French form of Latin Elwisia, ÉLOISE means "hale-wide; very healthy and sound."Â
Male
Irish
Irish Gaelic name, of unknown NAOISE means. In Celtic mythology, this is the name of the warrior nephew of King Conchobar and beloved of Deirdre.
Boy/Male
Australian, Celtic, Irish
Mythical Name
Male
Norse
Old Norse name ÃRI means "eagle."
Female
French
Feminine form of French François, FRANÇOISE means "French."
Surname or Lastname
English
English : variant spelling of Noyce.
Female
Norse
Old Norse name AUÃR means "deeply rich."
Male
English
Middle English form of French Moisé, MOISE means "drawn out."
Surname or Lastname
English
English : variant spelling of Boyce.
NOISE FIGURE
NOISE FIGURE
Boy/Male
Tamil
Deyvayanakantan | தேயà¯à®µà®¯à®¾à®¨à®¾à®•à®¾à®¨à¯à®¤à®¨
Lord Murugan
Boy/Male
Native American
Wildcat.
Girl/Female
Arabic
First born.
Girl/Female
Hindu
Fishlike beautiful eyes
Boy/Male
Hindu, Indian, Tamil
Related to God Murugan
Boy/Male
Arabic, Muslim, Pashtun
Dawn; Morning
Surname or Lastname
English
English : habitational name from Buxton in Derbyshire, which in Middle English was called Buchestanes, Bucstones (i.e. ‘bowing stones’, from Middle English b(o)ugen, Old English būgan ‘to bow’ + stanes ‘stones’). It is probably named for logan stones in the vicinity. (Logan stones are boulders so poised that they rock at a touch.)English : less commonly, a habitational name from Buxton in Norfolk, which is named with the genitive case of the Old English personal name Bucc (see Buck 1) + Old English tūn ‘settlement’, ‘enclosure’.
Boy/Male
Muslim
Devoted
Girl/Female
Hindu
Goddess Durga
Female
Swedish
Old Swedish form of Old Norse ÞorrÃðr, THORFRIDH means "Thor's beauty."
NOISE FIGURE
NOISE FIGURE
NOISE FIGURE
NOISE FIGURE
NOISE FIGURE
n.
Confused, clattering noise; din; noisy talk or sport.
n.
Hence: Any assembly characterized by noise and confusion; a noisy frolic or gathering.
superl.
Making a noise, esp. a loud sound; clamorous; vociferous; turbulent; boisterous; as, the noisy crowd.
v. t.
To utter in a nasal manner; to pronounce with a nasal twang; as, to nose a prayer.
n.
Great tumult; violent disturbance and noise; noisy confusion; bustle and clamor.
superl.
Full of noise.
v. t.
To touch with the nose; to push the nose into or against; hence, to interfere with; to treat insolently.
v. i.
To run at the nose; to make a snuffling noise.
n.
The Norse language.
imp. & p. p.
of Noise
n.
A projecting end or beak at the front of an object; a snout; a nozzle; a spout; as, the nose of a bellows; the nose of a teakettle.
n.
A loud noise resulting from collision; a noisy collision of bodies; a collision.
v. t.
To disturb with noise.
n.
To balance; to make of equal weight; as, to poise the scales of a balance.
v. i.
To sound; to make a noise.
n.
A red nose.
a.
Attended by, or making, a loud and tumultuous noise; clamorous; noisy; vociferous.
n.
A snub nose.
v. t.
To tie in a noose; to catch in a noose; to entrap; to insnare.