| 释义 |
duplexer|ˈdjuːplɛksə(r)|
[f. duplex a. + -er1.]
A device by means of which signals are alternately transmitted from and received by a single radar or radio aerial.
1952Reintjes & Coate Princ. Radar (ed. 3) i. 10 The use of a single antenna for both transmission and reception in nearly all radar sets is made possible by a transmit-receive device..also called a duplexer and a receiver-protective device. 1954H. C. Minnett in E. G. Bowen Textbk. Radar (ed. 2) ix. 294 An aerial duplexer or TR/RT switch is an electronically operated switching device, which enables the same aerial to be used for both transmitting and receiving in pulsed radar equipments. 1962Engineering 5 Oct. 434 Discussions on valves..will cover..magnetrons, modulators, duplexers. |