High-frequency inductance coil for shortwave and ultra-short wave radio station

Abstract

The invention provides a high-frequency inductance coil for a shortwave and ultra-short wave radio station. The high-frequency inductance coil comprises a coil frame (1) and a copper wire (2); the coil frame (1) is a hollow ceramic frame; the copper wire (2) densely winds the hollow ceramic frame (1); the cross section of the copper wire (2) is in a flat rectangular shape and is provided with coil pins; a silver coating or a gold coating coats the surface layer of the copper wire (2) and insulating varnish coats the outer surface of the silver coating or the gold coating; the hollow ceramic frame (1) comprises an installation end surface which is arranged on an automatic antenna tuner frame (6) through fixing screws (3); a thermal conductive silicone grease layer (4) coats between the installation end surface and the contact surface of the automatic antenna tuner frame (6). According to the high-frequency inductance coil for the shortwave and ultra-short wave radio station, the problem of the coil burning of a tuning network of an automatic antenna tuner of a series of shortwave radio stations is well solved and accordingly the shortwave radio station can stably and reliably work, the fault-free working hour is significantly improved, and the technical effect is significant.

Description

technical field [0001] The invention belongs to the technical field of short-wave and ultra-short-wave communication, and in particular relates to a high-frequency inductive coil, which is mainly used for automatic antenna tuners of short-wave and ultra-short-wave radio stations. Background technique [0002] At present, in the automatic antenna tuner circuit of short-wave and ultra-short-wave radio stations, the inductance coil is mainly made of metal enameled wire with circular cross-section wound on a non-metallic frame, usually with a diameter of Φ2, which is tightly wound, and the non-metallic frame is usually made of polyamide. Materials with poor thermal conductivity such as tetrafluoroethylene, epoxy glass cloth, nylon, etc. According to the installation needs, the skeleton is processed into various forms. The characteristics of this kind of coil are simple processing technology and low production cost. However, when this kind of coil is used in a high-frequency, hig...

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Problems solved by technology

[0003] In order to effectively overcome the problem of "coil burning", the present invention attempts to design a coil to solve or reduce the serious problem of coil heating, so that the heat generated by the coil and the heat dissipation of the environment can be relatively balanced, so as to prevent the phenomenon of "coil burning"

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