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单词 horn antenna
释义

> as lemmas

horn antenna
horn antenna n. (see 15b).
extracted from hornn.
horn antenna
b. Radio. Any hollow waveguide that increases in one or both transverse dimensions towards the open end and can consequently act as a transmitting or receiving aerial. Also attributive, as horn aerial, horn antenna.
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society > communication > telecommunication > radio communications > radio equipment > [noun] > aerial
radiator1897
aerial wire1899
aerial1902
antenna1902
loop antenna1906
loop aerial1913
twin aerial1913
frame aerial1916
loop1922
beam aerial1926
cage aerial1926
Adcock1928
dipole1929
V antenna1932
beam antenna1935
rig1935
horn1936
whip1940
whip aerial1941
whip antenna1943
polyrod1945
unipole1945
slot aerial1946
slot antenna1946
dish1948
quad1951
V aerial1961
dish aerial1962
rectenna1964
omni-antenna1966
monopole1974
1936 W. L. Barrow in Proc. IRE 24 1328 [The pipe can be flared into a horn-shaped radiator].
1936 W. L. Barrow in Proc. IRE 24 1328 The application of horn radiators is not confined to the hollow tube system, for they may be fed by a coaxial or other lines... Thus, electromagnetic horns may be used as radiators in the wave band below ten meters.
1939 Proc. IRE 27 51 The operation of the electromagnetic horn ‘antenna’.
1949 H. E. Penrose Princ. & Pract. Radar xxii. 511 In general, the longer the opening of the horn, the more directive is the resulting field pattern.
1961 H. Jasik Antenna Engin. Handbk. x. 7 The pyramidal horn is frequently used as a standard horn of known gain in making measurements of other antennas.
1961 G. R. Miczaika & W. M. Sinton Tools of Astronomer viii. 261 Often a parabola is fed by a wave guide that terminates in a horn aimed at the disk.
1962 Observer 10 June 20/1 A huge 340-ton horn antenna at Andover, Maine, will beam signals at the satellite.
1970 Sci. Jrnl. Jan. 18/1 To maintain permanent radio illumination of the Earth the horn aerial mounted at one axis is mechanically despun in the opposite direction to spin stabilization.
1972 Daily Tel. 28 June 11/8 Mounted inconspicuously in its front grille were two four-inch-square radar ‘horns’—one for transmitting, the other for receiving.
extracted from hornn.
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更新时间:2024/12/24 10:39:18