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radio-frequency source

См. также в других словарях:

  • Radio noise source — A radio noise source is a device that emits radio waves at a certain frequency, used to calibrate radio telescopes such that received data may be compared to a known value, as well as to find the focal point of a telescope soon after construction …   Wikipedia

  • Radio-frequency identification — (RFID) is a technology that uses radio waves to transfer data from an electronic tag, called RFID tag or label, attached to an object, through a reader for the purpose of identifying and tracking the object. Some RFID tags can be read from… …   Wikipedia

  • Radio frequency heating — is the heating of materials by radio frequency (otherwise called electromagnetic) energy. This can be divided into 3 general categories as below. The term radio frequency is misleading electromagnetic energy of any frequency is absorbed (and… …   Wikipedia

  • Radio Frequency Identification — Radio identification Une puce de radio identification EPC utilisée par Wal Mart La radio identification plus souvent désignée pa …   Wikipédia en Français

  • Radio frequency identification — Radio identification Une puce de radio identification EPC utilisée par Wal Mart La radio identification plus souvent désignée pa …   Wikipédia en Français

  • radio frequency interference —    (RFI)    Noise caused by any source that generates radio waves at the same frequency and along the same path of another radio wave which interferes with radio reception …   IT glossary of terms, acronyms and abbreviations

  • Superconducting Radio Frequency — (SRF) science and technology involves the application of electrical superconductors to radio frequency devices. The ultra low electrical loss of the superconductor yields RF resonators with extremely high quality factors, or Q . For example, it… …   Wikipedia

  • Digital radio frequency memory — (DRFM) is an electronic method for digitally capturing and retransmitting RF signal. DRFMs are typically used in radar jamming, although applications in cellular communications are becoming more common. Overview A DRFM system is designed to… …   Wikipedia

  • NTIA Manual of Regulations and Procedures for Federal Radio Frequency Management — The NTIA Manual of Regulations and Procedures for Federal Radio Frequency Management, also known as the Red Book, is a publication of the United States Office of Spectrum Management of the National Telecommunications and Information… …   Wikipedia

  • Radio propagation — is a term used to explain how radio waves behave when they are transmitted, or are propagated from one point on the Earth to another. [ H. P. Westman et al, (ed), Reference Data for Radio Engineers, Fifth Edition , 1968, Howard W. Sams and Co.,… …   Wikipedia

  • Radio — is the transmission of signals, by modulation of electromagnetic waves with frequencies below those of visible light.Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of… …   Wikipedia

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