CCNA Wireless 640-722 Official Cert Guide

Antenna Characteristics

The world of wireless LANs would be rather simple if all antennas were created equal—too simple, in fact. To provide good wireless LAN coverage in a building, an outdoor area, or between two locations, you might be faced with a number of variables. For example, an office space might be arranged as a group of open cubicles or as a strip of closed offices down a long hallway. You might have to cover a large open lobby, a large open classroom, a section of a crowded sports arena, an oblong portion of a hospital roof where helicopters land, a large expanse of an outdoor park, city streets where public safety vehicles travel, and so on.

In other words, one type of antenna cannot fit every application. Instead, antennas come ...