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- W2047492005 abstract "The physical limitations of omni-directional antennas are considered. With the use of the spherical wave functions to describe the field, the directivity gain G and the Q of an unspecified antenna are calculated under idealized conditions. To obtain the optimum performance, three criteria are used, (1) maximum gain for a given complexity of the antenna structure, (2) minimum Q, (3) maximum ratio of G/Q. It is found that an antenna of which the maximum dimension is 2a has the potentiality of a broad band width provided that the gain is equal to or less than 4a/λ. To obtain a gain higher than this value, the Q of the antenna increases at an astronomical rate. The antenna which has potentially the broadest band width of all omni-directional antennas is one which has a radiation pattern corresponding to that of an infinitesimally small dipole." @default.
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- W2047492005 date "1948-12-01" @default.
- W2047492005 modified "2023-10-11" @default.
- W2047492005 title "Physical Limitations of Omni-Directional Antennas" @default.
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- W2047492005 doi "https://doi.org/10.1063/1.1715038" @default.
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