单词 | homodyne |
释义 | > as lemmashomodyne homodyne n. Brit. /ˈhəʊmə(ʊ)dʌɪn/ , /ˈhɒmə(ʊ)dʌɪn/ , U.S. /ˈhoʊməˌdaɪn/ , /ˈhɑməˌdaɪn/ [after heterodyne adj. and n.] a name given to a radio receiver and a method of detection which employs a local oscillator tuned to the carrier frequency of the detected signal.ΘΚΠ society > communication > telecommunication > radio communications > [adjective] > method of receiving or detecting signal heterodyne1908 autodyne1918 autoheterodyne1919 superheterodyne1920 neutrodyning1924 superhet1926 homodyne1928 frequency shift1944 1928 G. E. Sterling & R. S. Kruse Radio Man. iv. 149 If the local generated frequency is tuned to exactly the same frequency as the received signals..the condition of ‘zero beat’ is said to exist. This means of receiving has also been termed ‘homodyne’ method. 1965 New Scientist 11 Feb. 344/1 The approach adopted..is to stabilise the laser at a single frequency, using an ‘optical homodyne’ receiver. The system uses a helium-neon laser stabilised at 6328 angstroms as both transmitter and local oscillator. < as lemmas |
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