专利名称：Switch for high-frequency electrical
oscillations
发明人：ESPLEY DENNIS CLARK申请号：US5386848申请日：19481011公开号：US2640878A公开日：19530602
摘要：637,121. Keying carrier frequencies. GENERAL ELECTRIC CO., Ltd., and ESPLEY, D.C. July 29, 1947, No. 20423. [Class 40 (v)] [Also in Group XL (b)] A switch for high-frequency oscillations comprises a uniform line an integral number of quarter
wavelengths long connected at one end to the terminals to be switched and a conductorwhich can be placed so as to couple the line by a reactance - X to a second line of
reactance +X, or withdrawn to give negligibly small coupling. As shown, a coaxial line 10 isconnected at one end to the terminals 15, 16 to be switched. A second coaxial line 11 isarranged with its outer conductor continuous with that of line 10 and a bellows 19 isformed so that the enlarged ends of inner conductors 17, 18 may be approached orwithdrawn. The line 11 may be open or short-circuited and has an equal and oppositereactance to that of the capacity between the enlarged ends of the inner conductors.One inner may be provided with a spigot co-operating with a recess in the end of theopposing inner, Fig. 4 (not shown), or a separate conductor may act as a coupling. Twoswitches in parallel spaced apart by a quarter wavelength may be used in each of twobranch lines. The common feeder is a quarter wavelength from the nearest switch and iseffectively connected to the line in which the couplings are operative. Specification
564,988 is referred to.
申请人：THE GENERAL ELECTRIC COMPANY, LIMITED
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