Traditionally, a wireless bridge allows you to connect a wired network to a wireless network, and that still holds true. However, we can also think of a wireless bridge as connecting two wireless networks together, such as when you want to connect one building to another building but cannot lay cables (Figure 4.9):
In this sort of implementation, you will most likely use a unidirectional antenna, such as a Yagi. I would also like to mention that, although the preceding diagram shows a straight line connecting the two antennae, this ...