Antenna types

In radio systems, many different antenna types are used whose properties are especially crafted for particular applications.

• Most often, the greatest effect is due to the size (wavelength) of the radio waves the antenna is to intercept or produce.
• A competing second effect is differences in optimization for receiving and for transmitting.
• A competing third influence is the number and bandwidth of the frequenc(y/ies) that any single antenna must intercept or emit.