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- W1878412897 abstract "International civil standards require the generation of a reasonable constant field strength over a large area. In this paper it is shown that the dipole-like biconical and log-periodic antennas are less favourable compared to double ridged guide antennas. Due to the near field antenna pattern of the dipole-like antennas, considerable power is radiated to the floor and walls of a shielded enclosure. Although the floor and walls are covered by absorbing material, these absorbers are not performing well in the near field of antennas resulting in a high standing wave ratio of the antenna. Due to the high standing wave ratio the antennas present a low efficiency and poor quality of the field. A double ridged guide antenna has less sidelobes, higher gain and is less influenced by the floor and walls of a shielded enclosure. An extended double ridged guide antenna, extending the frequency range of classic double ridged guide antennas (200 MHz-1 GHz) to 80 MHz up to 1 GHz, has been developed and presented in this paper. The theoretical background and practically obtained results are shown." @default.
- W1878412897 created "2016-06-24" @default.
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- W1878412897 date "2002-11-28" @default.
- W1878412897 modified "2023-09-25" @default.
- W1878412897 title "High field strength in a large volume: the extended double ridged guide vs. the biconical and log-periodic antenna" @default.
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- W1878412897 doi "https://doi.org/10.1109/isemc.1998.750113" @default.
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