Second Generation. In mobile telephony, 2G protocols use digital encoding and support limited data communication capabilities. Digital technologies such as GSM, TDMA, and CDMA are examples of 2G technology.
Second and a half Generation. Extension of 2G wireless systems to increase data bandwidth and provide additional features such as packet-switched connection (for example, GPRS).
A folded dipole antenna consisting of two straight conductors connected in parallel.
Third Generation. The next generation of wireless digital communication technology offering a substantially higher data rate than 2.5G.
A folded dipole antenna consisting of three straight conductors connected in parallel.