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- W4243269589 abstract "An antenna is a device that is used in both wireless transmitters and receivers. This chapter begins with some aspects of three-dimensional geometry useful for antenna work, then compares the near field to the far field, and discusses polarization. It considers a range of topics related to the antenna patterns. The chapter also considers concepts of aperture. Antennas come in all shapes and sizes. The chapter presents few important examples to survey briefly, such as dipole antennas, grounded vertical antennas, folded dipoles, turnstiles, loop antennas, parabolic dish antennas, and mobile device antennas. Antenna arrays are collections of simple antennas with a particular spatial distribution and that are excited by voltages and currents with particular phase and amplitude relationships. Common and useful arrangements of antenna arrays include: linear; planar; and circular. The chapter ends with a brief look at some practical issues in using and connecting antennas, and in feeding them. Controlled Vocabulary Terms antenna arrays; antenna radiation patterns; antennas; aperture antennas; polarisation" @default.
- W4243269589 created "2022-05-12" @default.
- W4243269589 date "2011-11-28" @default.
- W4243269589 modified "2023-10-17" @default.
- W4243269589 title "Antennas" @default.
- W4243269589 cites W4206271555 @default.
- W4243269589 doi "https://doi.org/10.1002/9781118121115.ch4" @default.
- W4243269589 hasPublicationYear "2011" @default.
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