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- W3021916861 abstract "Publisher SummaryThis chapter discusses the communication through microwaves. Microwaves are loosely considered to be those at frequencies between 1GHz (30cm) and 100GHz (0.3cm). Principal ground communications usage is for point-to-point links carrying information and controlling signals on systems such as multiplexed communication-including data networks, telemetry, and mobile radio. The propagation of the higher frequencies, 30-100 GHz, is being studied for possible future use in micro-cellular radio-telephone systems. These are also used for satellite communications and radar applications. Microwave frequencies up to 3 GHz have now been reserved for mobile use. The path loss is higher at microwave frequencies than at VHF and UHF. The additional losses in a microwave path caused by objects intruding either into the first Fresnel zone or close to it, which exhibit “knife-edge” or “smooth-sphere” characteristics. Refraction affects microwave propagation and temperature inversions may cause ducting resulting in a loss of signal and interference. The degree and sense of refraction of a wave is related to a factor known as K." @default.
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- W3021916861 date "2002-01-01" @default.
- W3021916861 modified "2023-09-27" @default.
- W3021916861 title "Microwave communication" @default.
- W3021916861 doi "https://doi.org/10.1016/b978-075065608-5/50012-2" @default.
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