Antenna Behavior: Size Matters

The August 2005 issue of the IEEE Antennas & Propagation Magazine contained an interesting paper by Dr. Steven Best [1]. His paper described the results of an extensive modeling exercise that examined sev-eral different configurations of reduced-size anten-nas—an important family of antennas for portable wireless communications. In his paper, Best compared a number of folded monopole topologies in self-resonant and impedance matched configurations. Figure 1 illustrates a four-arm structure with additional electrical length added to each arm as a meander line.
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