ANTENNAS


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ANTENNAS
ANTENNASThe performance of radio systems on aircraft is profoundly affected by the design and placement of antennas. This is particularly true of antennas for transmitters, since the antenna system is a tuned circuit, and its ability to radiate energy into space is determined by its length in relation to the frequency to be transmitted. In general, the higher the frequency, the shorter the antenna. In practice it is possible to adjust the length of an antenna electronically by means of an inductance coil in series with the antenna. As radio systems become more sophisticated, antenna lengths become less critical; that is, a sophisticated low-frequency radio may operate perfectly with a relatively short antenna. On this type of system the effective length of the antenna is changed by means of electronic circu…
Citation
Thomas K. Eismin: Aircraft Electricity and Electronics, Sixth Edition. ANTENNAS, Chapter (McGraw-Hill Professional, 2014), AccessEngineering Export