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单词 superheterodyne
释义

superheterodyneadj.n.

Brit. /ˌsuːpəˈhɛt(ə)rədʌɪn/, /ˌsjuːpəˈhɛt(ə)rədʌɪn/, U.S. /ˌsupərˈhɛdərəˌdaɪn/
Origin: Formed within English, by compounding. Etymons: supersonic adj., heterodyne adj.
Etymology: < super- (in supersonic adj.) + heterodyne adj.
Radio and Television.
A. adj.
Employing or involving a method of radio and television reception in which the receiver produces a tunable signal which is combined with the incoming signal to produce a predetermined intermediate frequency (typically ultrasonic), on which amplification and other processing is performed; of or relating to this method of reception. Cf. heterodyne adj. 1
ΘΚΠ
society > communication > telecommunication > radio communications > [adjective] > method of receiving or detecting signal
heterodyne1908
autodyne1918
autoheterodyne1919
superheterodyne1920
neutrodyning1924
superhet1926
homodyne1928
frequency shift1944
1920 Wireless Age Aug. 43/1 You may obtain condensers suitable for use in the super-heterodyne receiver.
1922 Wireless World 1 Apr. 11/1 The Armstrong super~heterodyne principle, in which the incoming signals are heterodyned before the first detector valve.
1948 Life 15 Mar. 3 (advt.) An AC-DC superheterodyne table radio in warm brown plastic.
1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) XI. 257/1 Frequency-modulation (FM) receivers are almost always superheterodyne.
1986 Pop. Mech. June 11/1 (advt.) Exactly what the discerning driver needs, superheterodyne performance in a package the size of a cassette tape.
2003 Daily News (N.Y.) (Nexis) 29 July 28 He was a reassuring weekly constant on everyone's big superheterodyne living room radio for more than 20 years.
B. n.
A superheterodyne receiver.
ΘΚΠ
society > communication > telecommunication > radio communications > radio equipment > [noun] > radio set > receiver > types of
crystal receiver1910
heterodyne1915
self-heterodyne1915
crystal set1921
crystal radio1922
superheterodyne1922
superhet1924
battery-receiver1928
battery-set1930
mobile unit1961
1922 Q.S.T. July 7/1 Super-regeneration is..the method that makes two tubes do all the work that ten used to do in the super-heterodyne.
1944 Pop. Sci. Jan. 157/1 Let's suppose you have an A.C.-D.C. superheterodyne with a 12SA7 converter.
1965 Wireless World July 336/2 The various oscillators in superheterodynes have all set their own problems.
2010 C. Drentea Mod. Communications Receiver Design & Technol. iii. 13 Today there are several types of superheterodynes, and their mixing schemes dictate their terminology.
This entry has been updated (OED Third Edition, June 2012; most recently modified version published online June 2022).
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adj.n.1920
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