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1 intermediate-frequency amplification
English-German dictionary of Electrical Engineering and Electronics > intermediate-frequency amplification
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2 intermediate-frequency amplification
Англо-русский словарь технических терминов > intermediate-frequency amplification
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3 intermediate-frequency amplification
1) Техника: усиление на ПЧ, усиление по промежуточной частоте2) Электроника: усиление по ПЧУниверсальный англо-русский словарь > intermediate-frequency amplification
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4 intermediate-frequency amplification
English-russian dictionary of physics > intermediate-frequency amplification
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5 intermediate-frequency amplification
English-Russian electronics dictionary > intermediate-frequency amplification
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6 intermediate-frequency amplification
The New English-Russian Dictionary of Radio-electronics > intermediate-frequency amplification
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7 intermediate-frequency amplification
nELECTRON, TELECOM amplificación de frecuencia intermedia fEnglish-Spanish technical dictionary > intermediate-frequency amplification
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8 intermediate-frequency amplification
s.amplificación de frecuencia intermedia.Nuevo Diccionario Inglés-Español > intermediate-frequency amplification
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9 intermediate-frequency amplification
English-Russian dictionary of electronics > intermediate-frequency amplification
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10 intermediate-frequency amplification
English-Russian dictionary of telecommunications > intermediate-frequency amplification
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11 amplification takes place largely at the intermediate frequency
Универсальный англо-русский словарь > amplification takes place largely at the intermediate frequency
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12 intermediate
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13 amplification
1) усиление3) бион амплификация, размножение копий генетических признаков•- acoustic-wave amplification
- acoustoelectric amplification
- acoustoelectronic amplification
- audio amplification
- carrier-frequency amplification
- cascade amplification
- cell amplification
- coherent amplification
- current amplification
- dc amplification
- distributed amplification
- electronic amplification
- feedback amplification
- gas amplification
- integral amplification
- intermediate-frequency amplification
- laser amplification
- light amplification
- linear amplification
- maser amplification
- microwave amplification
- molecular amplification
- near-threshold amplification
- net amplification
- one-port amplification
- overall amplification
- parametric amplification
- photoelectric amplification
- piezoelectric amplification
- post-threshold amplification
- power amplification
- quantum amplification
- radio-frequency amplification
- regenerative amplification
- single-pass amplification
- small-signal amplification
- space-charge wave amplification
- sub-threshold amplification
- superregenerative amplification
- traveling-wave amplification
- two-port amplification
- voltage amplification -
14 amplification
1) усиление3) бион. амплификация, размножение копий генетических признаков•- acoustic-wave amplification
- acoustoelectric amplification
- acoustoelectronic amplification
- audio amplification
- carrier-frequency amplification
- cascade amplification
- cell amplification
- coherent amplification
- current amplification
- dc amplification
- distributed amplification
- electronic amplification
- feedback amplification
- gas amplification
- integral amplification
- intermediate-frequency amplification
- laser amplification
- light amplification
- linear amplification
- maser amplification
- microwave amplification
- molecular amplification
- near-threshold amplification
- net amplification
- one-port amplification
- overall amplification
- parametric amplification
- photoelectric amplification
- piezoelectric amplification
- post-threshold amplification
- power amplification
- quantum amplification
- radio-frequency amplification
- regenerative amplification
- single-pass amplification
- small-signal amplification
- space-charge wave amplification
- sub-threshold amplification
- superregenerative amplification
- traveling-wave amplification
- two-port amplification
- voltage amplificationThe New English-Russian Dictionary of Radio-electronics > amplification
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15 amplification
1) усиление3) бтх амплификация (1. размножение (увеличение) числа копий генетических признаков 2. обработка, приводящая к увеличению числа копий ДНК)•-
ac amplification
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audio amplification
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biological amplification
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carrier-frequency amplification
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carrier amplification
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chloramphenicol amplification
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current amplification
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dc amplification
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distributed amplification
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feedback amplification
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gas amplification
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heterodyne amplification
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integral amplification
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intermediate-frequency amplification
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microwave amplification
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multibeam amplification
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net amplification
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parametric amplification
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photoelectric amplification
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power amplification
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pressure amplification
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radio-frequency amplification
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regenerative amplification
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small-signal amplification
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voltage amplification -
16 frequency
1) частота2) радиостанция•- A2A frequency
- absolute cutoff frequency
- acoustical frequency
- aircraft emergency frequency
- air-ground frequency
- alternative frequencies
- angular frequency
- assigned frequency
- audio-signals frequency
- authorized frequency
- auxiliary frequency
- beat frequency
- break frequency
- calling frequency
- carrier frequency
- center frequency
- central frequency
- channel frequency
- characteristic frequency
- chrominance frequency
- chrominance sampling frequency
- chrominance-carrier frequency
- circular transducing frequency
- clock frequency
- closed-loop frequency
- color-difference signal sampling frequency
- corner frequency
- critical flickering frequency
- crossover frequency
- cutoff frequency
- cyclotron frequency
- dedicated frequency
- difference frequency
- distress frequency
- divisible frequency
- dropout frequency
- extremely-high frequency
- extremely-low frequency
- field frequency
- filter frequency
- fixed frequency
- folding frequency
- frame frequency
- free-running frequency
- frequency of operation
- frequency of optimum traffic
- frequency of optimum transmission
- fundamental frequency
- fusion frequency
- gain-crossover frequency
- ground-to-air frequency
- group frequency
- guarded frequency
- H2A frequency
- harmonic frequency
- heterodyne frequency
- high frequency
- horizontal-line frequency
- horizontal-scanning frequency
- image frequency
- imaginary frequency
- infralow frequency
- instantaneous frequency
- intercarrier frequency
- intermediate frequency
- intrinsic frequency
- J2A frequency
- keying frequency
- knee frequency
- limiting frequency
- line control frequency
- line frequency
- lock-in frequency
- low frequency
- lower frequencies
- lower half-power frequency
- lowest-usable high frequency
- lowest-useful high frequency
- master frequency
- maximum modulating frequency
- maximum modulation frequency
- maximum operating frequency
- maximum usable frequency
- maximum-keying frequency
- medium frequency
- microwave frequency
- multiple frequency
- natural frequency
- nominal pass-band center frequency
- NON frequency
- normalized frequency
- note frequency
- Nyquist frequency
- operating frequency
- optical frequency
- optimum traffic frequency
- optimum transmission frequency
- optimum working frequency
- peak amplification frequency
- picture frequency
- power frequency
- precise frequency
- primary frequency
- protected frequency
- pulse-repetition frequency
- pump frequency
- pumping frequency
- quenching frequency
- R2A frequency
- radial frequency
- rated-network frequency
- reduced frequency
- reference frequency
- repetition frequency
- resonance frequency
- resonant frequency
- ringing frequency
- sampling frequency
- scanning frequency
- scanning line frequency
- second-channel frequency
- self-resonant frequency
- side frequency
- signal frequency
- slip frequency
- sound-carrier frequency
- spatial frequency
- speech frequency
- standard frequency
- subtelephone frequency
- super-high frequency
- supersonic frequency
- supertelephone frequency
- sweep frequency
- swept frequency
- tone frequency
- transition frequency
- translation frequency
- ultra-high frequency
- ultra-low frequency
- upper frequencies
- vertical frequency
- very-high frequency
- very-low frequency
- virtual-carrier frequency
- voice frequency
- wow frequencyEnglish-Russian dictionary of telecommunications and their abbreviations > frequency
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17 low
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18 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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19 stage
1) каскад2) ступень, фаза•- balancing stage
- control stage
- dc inserter stage
- dead-end stage
- detection stage
- differential stage
- direct channel stage
- double-step stage
- driver stage
- first-audio stage
- group stage
- high-frequency stage
- incoming group stage
- input stage
- intermediate-frequency stage
- inverse stage
- line sweep stage
- mixing stage
- modulator stage
- MOSFET output stage
- multiplying stage
- neutralized radio-frequency stage
- outgoing group stage
- output stage
- parallel stage
- power amplifier stage
- power stage
- preamplification stage
- preselector stage
- preterminal stage
- quiet input stage
- register selection stage
- register stage
- resistor gain stage
- resonance stage
- scanning stage
- single-ended stage
- single-step stage
- space switching stage
- stage of selection
- subscriber selection stage
- switch stage
- switching stage
- terminal stage
- time-switching stage
- unbalanced stageEnglish-Russian dictionary of telecommunications and their abbreviations > stage
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20 IF
См. также в других словарях:
intermediate frequency — n. Radio in superheterodyne reception, a frequency resulting from combining the incoming signal with a locally produced signal for amplification prior to detection … English World dictionary
Intermediate frequency — In communications and electronic engineering, an intermediate frequency (IF) is a frequency to which a carrier frequency is shifted as an intermediate step in transmission or reception. The intermediate frequency is created by mixing the carrier… … Wikipedia
intermediate frequency — Radio. the middle frequency in a superheterodyne receiver, at which most of the amplification takes place. Abbr.: if [1920 25] * * * … Universalium
intermediate frequency — /ɪntəˌmidiət ˈfrikwənsi/ (say intuh.meedeeuht freekwuhnsee) noun Radio the middle frequency in a superheterodyne receiver, at which most of the amplification takes place …
Intermediate power amplifier — An Intermediate power amplifier (IPA) is one stage of the amplification process in a radio transmitter which usually occurs prior to the final high power amplification. The IPA provides lower power RF energy necessary to drive the final. In very… … Wikipedia
radio — /ray dee oh /, n., pl. radios, adj., v., radioed, radioing. n. 1. wireless telegraphy or telephony: speeches broadcast by radio. 2. an apparatus for receiving or transmitting radio broadcasts. 3. a message transmitted by radio. adj. 4. pertaining … Universalium
Superheterodyne receiver — A 5 tube superheterodyne receiver made in Japan around 1955 In electronics, a superheterodyne receiver (sometimes shortened to superhet) uses frequency mixing or heterodyning to convert a received signal to a fixed intermediate frequency, which… … Wikipedia
Wavelength-division multiplexing — For the radio station, see DWDM FM. Multiplex techniques Circuit mode (constant bandwidth) TDM · FDM · SDM Polarization multiplexing Spatial m … Wikipedia
Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… … Wikipedia
Satellite modem — A satellite modem or sat modem is a modem used to establish data transfers using a communications satellite as a relay.There is a wide range of satellite modems from cheap devices for home internet access to expensive multifunctional equipment… … Wikipedia
Differential gain — is a kind of linearity distortion which affects the color saturation in TV broadcasting. Contents 1 Composite color video signal 2 Non linearity in the broadcast system 3 Differential gain … Wikipedia
