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101 quantum noise limited receiver
English-Russian household appliances > quantum noise limited receiver
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102 low-noise receiver
малошумящий приемник, МШПEnglish-Russian dictionary of telecommunications and their abbreviations > low-noise receiver
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103 low-noise receiver
English-Russian dictionary on household appliances > low-noise receiver
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104 quantum noise limited receiver
English-Russian dictionary on household appliances > quantum noise limited receiver
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105 low-noise receiver
Englsh-Russian aviation and space dictionary > low-noise receiver
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106 low-noise receiver
English-Russian dictionary of telecommunications > low-noise receiver
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107 decrease the noise temperature of the receiver
English-Russian dictionary of telecommunications > decrease the noise temperature of the receiver
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108 собственные шум приемника
Большой англо-русский и русско-английский словарь > собственные шум приемника
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109 собственный шум приемника
Большой англо-русский и русско-английский словарь > собственный шум приемника
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110 собственный шум приемника
Англо-русский словарь технических терминов > собственный шум приемника
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111 Armstrong, Edwin Howard
[br]b. 18 December 1890 New York City, New York, USAd. 31 January 1954 New York City, New York, USA[br]American engineer who invented the regenerative and superheterodyne amplifiers and frequency modulation, all major contributions to radio communication and broadcasting.[br]Interested from childhood in anything mechanical, as a teenager Armstrong constructed a variety of wireless equipment in the attic of his parents' home, including spark-gap transmitters and receivers with iron-filing "coherer" detectors capable of producing weak Morse-code signals. In 1912, while still a student of engineering at Columbia University, he applied positive, i.e. regenerative, feedback to a Lee De Forest triode amplifier to just below the point of oscillation and obtained a gain of some 1,000 times, giving a receiver sensitivity very much greater than hitherto possible. Furthermore, by allowing the circuit to go into full oscillation he found he could generate stable continuous-waves, making possible the first reliable CW radio transmitter. Sadly, his claim to priority with this invention, for which he filed US patents in 1913, the year he graduated from Columbia, led to many years of litigation with De Forest, to whom the US Supreme Court finally, but unjustly, awarded the patent in 1934. The engineering world clearly did not agree with this decision, for the Institution of Radio Engineers did not revoke its previous award of a gold medal and he subsequently received the highest US scientific award, the Franklin Medal, for this discovery.During the First World War, after some time as an instructor at Columbia University, he joined the US Signal Corps laboratories in Paris, where in 1918 he invented the superheterodyne, a major contribution to radio-receiver design and for which he filed a patent in 1920. The principle of this circuit, which underlies virtually all modern radio, TV and radar reception, is that by using a local oscillator to convert, or "heterodyne", a wanted signal to a lower, fixed, "intermediate" frequency it is possible to obtain high amplification and selectivity without the need to "track" the tuning of numerous variable circuits.Returning to Columbia after the war and eventually becoming Professor of Electrical Engineering, he made a fortune from the sale of his patent rights and used part of his wealth to fund his own research into further problems in radio communication, particularly that of receiver noise. In 1933 he filed four patents covering the use of wide-band frequency modulation (FM) to achieve low-noise, high-fidelity sound broadcasting, but unable to interest RCA he eventually built a complete broadcast transmitter at his own expense in 1939 to prove the advantages of his system. Unfortunately, there followed another long battle to protect and exploit his patents, and exhausted and virtually ruined he took his own life in 1954, just as the use of FM became an established technique.[br]Principal Honours and DistinctionsInstitution of Radio Engineers Medal of Honour 1917. Franklin Medal 1937. IERE Edison Medal 1942. American Medal for Merit 1947.Bibliography1922, "Some recent developments in regenerative circuits", Proceedings of the Institute of Radio Engineers 10:244.1924, "The superheterodyne. Its origin, developments and some recent improvements", Proceedings of the Institute of Radio Engineers 12:549.1936, "A method of reducing disturbances in radio signalling by a system of frequency modulation", Proceedings of the Institute of Radio Engineers 24:689.Further ReadingL.Lessing, 1956, Man of High-Fidelity: Edwin Howard Armstrong, pbk 1969 (the only definitive biography).W.R.Maclaurin and R.J.Harman, 1949, Invention \& Innovation in the Radio Industry.J.R.Whitehead, 1950, Super-regenerative Receivers.A.N.Goldsmith, 1948, Frequency Modulation (for the background to the development of frequency modulation, in the form of a large collection of papers and an extensive bibliog raphy).KFBiographical history of technology > Armstrong, Edwin Howard
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112 factor
1) коэффициент; множитель || выносить за скобки; разлагать на множители2) фактора) коэффициент; константа; постояннаяб) поправочный коэффициент; корректирующий множитель3) делитель ( числа или выражения)4) регрессор•- absorption factor
- accountable factor
- alternating-quantity form factor
- amplification factor
- amplifier distortion factor
- amplitude factor
- array factor
- AT form factor
- attenuation factor
- ATX form factor
- autonomous factor
- avalanche multiplication factor
- average noise factor
- Baby AT form factor
- bandwidth factor
- base-transport factor
- beam compression factor
- between factor
- blocking factor
- Boltzmann factor
- branching factor
- bunching factor
- capacitive branch quality factor
- causal factor
- chance factor
- chill factor
- coincidence factor
- collector-current multiplication factor
- color correction factor
- commutation factor
- commutative factor
- compensation factor
- complex factor
- complexity factor
- confidence factor
- constant factor
- constraint factor
- correction factor
- correlation factor
- coupling factor
- crest factor
- cross-modulation factor
- current-amplification factor
- current-multiplication factor
- current-stability factor
- cyclic duration factor
- damping factor
- daylight factor
- Debye-Waller factor
- deflection factor
- deflection uniformity factor
- degeneracy factor
- degeneration factor
- demagnetization curve fullness factor
- demagnetizing factor
- demand factor
- depolarization factor
- depreciation factor
- derating factor
- determining factor
- design factor
- dielectric dissipation factor
- dielectric filling factor
- dielectric loss factor
- dielectric power factor
- diffusion factor
- dimension factor
- dimensionless factor
- directivity factor
- dissipation factor
- distortion factor
- distribution factor
- diversity factor
- duty factor
- electrical form factor
- element factor
- elimination factor
- exogenous factor
- exponential factor
- feedback factor
- ferrite filling factor
- fill factor
- filling factor
- filter factor
- fineness factor
- fixed factor
- flare factor
- flex-ATX form factor
- force factor
- form factor
- free factor
- frequency multiplication factor
- fudge factor
- fullness factor
- g-factor
- gap factor
- gas-amplification factor
- gas-content factor
- gas-multiplication factor
- geometric factor
- geometry factor
- greatest common factor
- greatest prime factor
- grouping factor
- growth factor
- harmonic distortion factor
- heat conductivity factor
- human factor
- hysteresis factor
- impedance mismatch factor
- improvement factor
- inductive branch quality factor
- injection factor
- interlace factor
- interleave factor
- K-factor
- Kell factor
- Landé factor
- leakage factor
- literal factor
- load factor
- loss factor - luminosity factor
- luminous factor
- magnetic dissipation factor
- magnetic form factor
- magnetic leakage factor
- magnetic loss factor
- magnetic power factor
- magnetic splitting factor
- magnetostrictive sensitivity factor
- magnification factor
- magnitude factor
- mains decoupling factor
- mains-interference immunity factor
- mechanical quality factor
- micro-ATX form factor
- mini-ATX form factor
- mismatch factor
- mismatching factor
- modifying factor
- modulation factor
- mu factor
- multiplication factor
- multiplying factor
- mutual inductance factor
- nature factor
- NLX form factor
- noise factor
- noise improvement factor
- nonlinear distortion factor
- nuclear g-factor
- nuclear Landé factor
- nuclear magnetic splitting factor
- numerical factor
- operation factor
- output factor
- overload factor
- packing factor
- peak factor
- penetration factor
- performance factor
- permeability rise factor
- phase factor
- photomultiplication factor
- piezoelectric coupling factor
- pitch factor
- plane-Earth factor
- polarization mismatch factor
- polarization receiving factor
- post-deflection acceleration factor
- power factor
- propagation factor
- propagation terrain factor
- proximity factor
- pulse duty factor
- punch-through factor
- Q-factor
- quality factor
- radiance factor
- reactive factor
- readiness factor
- receiver noise factor
- rectification factor
- rectifier form factor
- reduced quality factor
- reflection factor
- regularization factor
- relative erythemal factor
- relative severity factor
- reliability factor
- relocation factor
- repairability factor
- repeatability factor
- repeating measure factor
- restorability factor
- RF demagnetizing factor
- ripple factor
- rolloff factor
- SA factor
- safety factor
- saturation factor
- scale factor
- scaling factor
- secondary-electron emission factor
- sector interleave factor
- selective availability factor
- shadow factor
- shape factor
- shield factor
- shielding factor
- signal-to-noise factor
- skip factor
- sky factor
- slowing factor
- smoothing factor
- space factor
- space-charge growth factor
- speed-up factor
- spherical-Earth factor
- spot noise factor
- spread factor
- stability factor
- stabilization factor
- standing-wave loss factor
- storage factor
- structure factor
- surround factor
- switching factor
- time-scaling factor
- transfer factor
- transition factor
- transmission factor
- transport factor
- unitary factor
- unity power factor
- unloaded dissipation factor
- utilization factor
- vacuum factor
- velocity factor
- visibility factor
- voltage amplification factor
- weight factor
- weighting factor
- windchill factor
- winding factor
- within factor
- WTX form factor
- Y-factor
- Z-factor
- μ-factor -
113 factor
1) коэффициент; множитель || выносить за скобки; разлагать на множители2) фактора) коэффициент; константа; постояннаяб) поправочный коэффициент; корректирующий множитель3) делитель ( числа или выражения)4) регрессор•- μ factor- absorption factor
- accountable factor
- alternating-quantity form factor
- amplification factor
- amplifier distortion factor
- amplitude factor
- array factor
- AT form factor
- attenuation factor
- ATX form factor
- autonomous factor
- avalanche multiplication factor
- average noise factor
- Baby AT form factor
- bandwidth factor
- base-transport factor
- beam compression factor
- between factor
- blocking factor
- Boltzmann factor
- branching factor
- bunching factor
- capacitive branch quality factor
- causal factor
- chance factor
- chill factor
- coincidence factor
- collector-current multiplication factor
- color correction factor
- commutation factor
- commutative factor
- compensation factor
- complex factor
- complexity factor
- confidence factor
- constant factor
- constraint factor
- correction factor
- correlation factor
- coupling factor
- crest factor
- cross-modulation factor
- current-amplification factor
- current-multiplication factor
- current-stability factor
- cyclic duration factor
- damping factor
- daylight factor
- Debye-Waller factor
- deflection factor
- deflection uniformity factor
- degeneracy factor
- degeneration factor
- demagnetization curve fullness factor
- demagnetizing factor
- demand factor
- depolarization factor
- depreciation factor
- derating factor
- design factor
- determining factor
- dielectric dissipation factor
- dielectric filling factor
- dielectric loss factor
- dielectric power factor
- diffusion factor
- dimension factor
- dimensionless factor
- directivity factor
- dissipation factor
- distortion factor
- distribution factor
- diversity factor
- duty factor
- electrical form factor
- element factor
- elimination factor
- exogenous factor
- exponential factor
- factor of production
- feedback factor
- ferrite filling factor
- fill factor
- filling factor
- filter factor
- fineness factor
- fixed factor
- flare factor
- flex-ATX form factor
- force factor
- form factor
- free factor
- frequency multiplication factor
- fudge factor
- fullness factor
- gap factor
- gas-amplification factor
- gas-content factor
- gas-multiplication factor
- geometric factor
- geometry factor
- g-factor
- greatest common factor
- greatest prime factor
- grouping factor
- growth factor
- harmonic distortion factor
- heat conductivity factor
- human factor
- hysteresis factor
- impedance mismatch factor
- improvement factor
- inductive branch quality factor
- injection factor
- interlace factor
- interleave factor
- Kell factor
- K-factor
- Landé factor
- leakage factor
- literal factor
- load factor
- loss factor
- lowest common factor
- LPX form factor
- luminosity factor
- luminous factor
- magnetic dissipation factor
- magnetic form factor
- magnetic leakage factor
- magnetic loss factor
- magnetic power factor
- magnetic splitting factor
- magnetostrictive sensitivity factor
- magnification factor
- magnitude factor
- mains decoupling factor
- mains-interference immunity factor
- mechanical quality factor
- micro-ATX form factor
- mini-ATX form factor
- mismatch factor
- mismatching factor
- modifying factor
- modulation factor
- mu factor
- multiplication factor
- multiplying factor
- mutual inductance factor
- nature factor
- NLX form factor
- noise factor
- noise improvement factor
- nonlinear distortion factor
- nuclear g-factor
- nuclear Landé factor
- nuclear magnetic splitting factor
- numerical factor
- operation factor
- output factor
- overload factor
- packing factor
- peak factor
- penetration factor
- performance factor
- permeability rise factor
- phase factor
- photomultiplication factor
- piezoelectric coupling factor
- pitch factor
- plane-Earth factor
- polarization mismatch factor
- polarization receiving factor
- post-deflection acceleration factor
- power factor
- propagation factor
- propagation terrain factor
- proximity factor
- pulse duty factor
- punch-through factor
- Q-factor
- quality factor
- radiance factor
- reactive factor
- readiness factor
- receiver noise factor
- rectification factor
- rectifier form factor
- reduced quality factor
- reflection factor
- regularization factor
- relative erythemal factor
- relative severity factor
- reliability factor
- relocation factor
- repairability factor
- repeatability factor
- repeating measure factor
- restorability factor
- RF demagnetizing factor
- ripple factor
- rolloff factor
- SA factor
- safety factor
- saturation factor
- scale factor
- scaling factor
- secondary-electron emission factor
- sector interleave factor
- selective availability factor
- shadow factor
- shape factor
- shield factor
- shielding factor
- signal-to-noise factor
- skip factor
- sky factor
- slowing factor
- smoothing factor
- space factor
- space-charge growth factor
- speed-up factor
- spherical-Earth factor
- spot noise factor
- spread factor
- stability factor
- stabilization factor
- standing-wave loss factor
- storage factor
- structure factor
- surround factor
- switching factor
- time-scaling factor
- transfer factor
- transition factor
- transmission factor
- transport factor
- unitary factor
- unity power factor
- unloaded dissipation factor
- utilization factor
- vacuum factor
- velocity factor
- visibility factor
- voltage amplification factor
- weight factor
- weighting factor
- windchill factor
- winding factor
- within factor
- WTX form factor
- Y factor
- Z factorThe New English-Russian Dictionary of Radio-electronics > factor
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114 threshold
1) порог; пороговая величина; пороговое значение || пороговый2) предел; граница || предельный; граничный3) исходная точка; начало4) вход ( в помещение)•- threshold of companding
- threshold of degeneracy
- threshold of detectability
- threshold of discomfort
- threshold of feeling
- threshold of hearing
- threshold of instability
- threshold of pain
- threshold of parametric excitation
- threshold of sensitivity
- threshold of tickle
- absolute luminance threshold
- achromatic luminance threshold
- adaptive threshold
- adjustable threshold
- brightness difference threshold
- chromatic threshold
- clipping threshold
- contrast threshold
- damage threshold
- decision threshold
- detection threshold
- difference threshold
- differential threshold of loudness
- differential threshold of pitch
- energy threshold
- flicker-fusion threshold
- Geiger-Muller threshold
- identification threshold
- improvement threshold
- instrument threshold
- intelligibility threshold
- inversion threshold
- jumming threshold
- laser-damage threshold
- lasing threshold
- likelihood threshold
- long-wavelength threshold of photoeffect
- luminance threshold
- luminance difference threshold
- luminescence threshold
- muting threshold
- noise threshold
- odor threshold
- odour threshold
- off threshold
- offset threshold
- on threshold
- oscillation threshold
- perception threshold
- photodetachment threshold
- photoelectric threshold
- photoemission threshold
- preset threshold
- receiver threshold
- receiver noise threshold
- recognition threshold
- resolution threshold
- riding threshold
- signal threshold
- speech intelligibility threshold
- stability threshold
- susceptibility threshold
- tracking threshold
- variable threshold
- visual perception threshold -
115 factor
1) коэффициент; множитель2) фактор•- activity factor
- antenna factor
- attenuation factor
- average power factor
- beam compression factor
- biologic factor
- capacity factor
- coil Q-factor
- coincidence factor
- compensation factor
- control factor
- cooperation factor
- damping factor
- daylight factor
- degradation factor
- delta factor
- demand factor
- demodulation factor
- diffusion factor
- drum factor
- duty factor
- effective-demand factor
- feedback factor
- f-factor
- filter factor
- FM-improvement factor
- form factor
- frequency repeating factor
- Kell factor
- K-factor
- load factor
- loss factor
- luminance factor
- mismatch factor
- mismatching factor
- modulation factor
- natural power factor
- net bit-rate reduction factor
- noise factor
- noise-improvement factor
- omission factor
- operation factor
- operations factor
- optical channel factor
- overload factor
- peak factor
- phase factor
- picture mux factor
- pitch factor
- power factor
- power-conversion factor
- propagation factor
- Q-factor
- real power factor
- receiver noise factor
- reflectance factor
- reflection factor
- repetition factor
- ripple factor
- roll-off factor
- saturation factor
- scale factor
- shape factor
- shielded factor
- shielding factor
- signal-to-noise improvement factor
- sky factor
- summary Q-factor
- total power factor
- velocity factor
- weight factor
- weighting factor
- winding factorEnglish-Russian dictionary of telecommunications and their abbreviations > factor
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116 RNF
1) Военный термин: Royal Northumberland Fusiliers, Russian No-holds-barred Fighting, radio navigation facility2) Техника: radio noise figure, receiver noise figure3) Оптика: refracted near field4) Сокращение: Radio Navigation Facilities, radio noise factor (figure)5) Университет: Research Network Forum6) Деловая лексика: Return Notification Form7) Программирование: Residence Not Flag8) Общественная организация: Rural Network Foundation -
117 temperature
температура- color temperature@absolute temperatureабсолютная температура@apparent temperatureэффективная температура@apparent disk temperatureприведенная к диску (планеты, Солнца) эффективная температура@atmospheric temperatureтемпература атмосферы@blackbody temperatureэквивалентная температура, приближающаяся к температуре абсолютно черного тела@boundary temperatureграничная температура@brightness temperatureяркостная температура@chromospheric temperatureтемпература хромосферы@coronal temperatureтемпература короны (Солнца)@cosmic{ (noise) brightness temperatureяркостная температура космического радиоизлучения@disk temperatureприведенная к диску эффективная температура@effective temperatureэффективная температура@equilibrium temperatureравновесная температура@equivalent temperatureэквивалентная температура@excitation temperatureтемпература возбуждения@ground temperatureсоставляющая шумовой температуры, обусловленная радиоизлучением Земли@infrared temperatureтемпература в инфракрасных лучах@internal temperatureвнутренняя температура@ionization temperatureионизационная температура@ionospheric temperatureтемпература ионосферы@kinetic temperatureкинетическая температура@luminance temperatureяркостная температура@lunar temperatureтемпература Луны@Moon's temperatureтемпература Луны@noise temperatureшумовая температура@optical brightness temperatureяркостная температура в оптическом диапазоне@photospheric temperatureтемпература фотосферы@planetary temperatureтемпература планеты@radiation temperatureтемпература излучения@radio temperatureтемпература радиоизлучения@radio sky temperatureрадиотемпература неба@receiver noise temperatureшумовая температура приемника@sky brightness temperatureяркостная температура неба@solar temperatureтемпература Солнца@stellar temperatureтемпература звезды@subsolar temperatureтемпература (планеты) в подсолнечной точке@subsurface temperatureподповерхностная температура@Sun's central temperatureтемпература в центре Солнца@surface temperatureповерхностная температура@ -
118 pulling figure
noise figure — коэффициент шума; шум-фактор
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119 RNF
1. radio noise figure - коэффициент радиопомех;2. receiver noise figure - коэффициент шума радиоприёмника -
120 density
- carrier-to-receiver noise density
- current density
- load density
- magnetic flux density
- mobile communication density
- mode density
- packing density
- phase-spectrum density
- power density
- radiant-flux density
- recording density
- spectral-noise density
- surface density
- telephone density
- track density
- transmission density
- writing densityEnglish-Russian dictionary of telecommunications and their abbreviations > density
См. также в других словарях:
Carrier-to-receiver noise density — ( C /k T ): In satellite communications, the ratio of the received carrier power to the receiver noise power density. Note 1: The carrier to receiver noise density ratio is usually expressed in dB. Note 2: The carrier to receiver noise density is … Wikipedia
Noise figure — (NF) is a measure of degradation of the signal to noise ratio (SNR), caused by components in a radio frequency (RF) signal chain. The noise figure is defined as the ratio of the output noise power of a device to the portion thereof attributable… … Wikipedia
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Noise measurement — is carried out in various fields. In acoustics, it can be for the purpose of measuring environmental noise, or part of a test procedure using white noise, or some other specialised form of test signal. In electronics it relates to the sensitivity … Wikipedia
Noise (audio) — Noise in audio, recording, and broadcast systems refers to the residual low level sound (usually hiss and hum) that is heard in quiet periods of a programme. In audio engineering, it can refer either to the acoustic noise from loudspeakers, or to … Wikipedia
Noise temperature — In electronics, noise temperature is one way of expressing the level of available noise power introduced by a component or source. The power spectral density of the noise is expressed in terms of the temperature (in kelvins) that would produce… … Wikipedia
Noise (video) — For other uses, see Noise (disambiguation). On an empty channel, an analog TV receiver shows a snowy noise pattern. A similar pattern is shown if on a digital channel when not using a DTV converter box … Wikipedia
Noise (radio) — In radio reception, noise is the superposition of white noise (also called static ) and other disturbing influences on the signal, caused either by thermal noise and other electronic noise from receiver input circuits or by interference from… … Wikipedia
Noise — This article is about noise as an unwanted phenomenon. For other uses, see Noise (disambiguation). NASA researchers at Glenn Research Center conducting tests on aircraft engine noise in 1967 In common use, the word noise means any unwanted … Wikipedia
Noise (electronics) — Electronic noise [1] is a random fluctuation in an electrical signal, a characteristic of all electronic circuits. Noise generated by electronic devices varies greatly, as it can be produced by several different effects. Thermal noise is… … Wikipedia
Noise floor — This article is about physics term. For the Bright Eyes album, see Noise Floor (Rarities: 1998 2005). In signal theory, the noise floor is the measure of the signal created from the sum of all the noise sources and unwanted signals within a… … Wikipedia