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- W53463605 abstract "An antenna is a device that is used to transfer guided electromagnetic waves (signals) to radiating waves in an unbounded medium, usually free space, and vice versa (i.e., in either the transmitting or receiving mode of operation). Antennas are frequency-dependent devices. Each antenna is designed for a certain frequency band. Beyond the operating band, the antenna rejects the signal. Therefore, we might look at the antenna as a bandpass filter and a transducer. Antennas are essential parts in communication systems. Therefore, understanding their principles is important. In this chapter, we introduce the reader to antenna fundamentals. There are many different antenna types. The isotropic point source radiator, one of the basic theoretical radiators, is useful because it can be considered a reference to other antennas. The isotropic point source radiator radiates equally in all directions in free space. Physically, such an isotropic point source cannot exist. Most antennas’ gains are measured with reference to an isotropic radiator and are rated in decibels with respect to an isotropic radiator (dBi)." @default.
- W53463605 created "2016-06-24" @default.
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- W53463605 date "2009-01-01" @default.
- W53463605 modified "2023-09-26" @default.
- W53463605 title "Fundamentals of Antennas" @default.
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