A 3 V data transceiver chip for dual-mode cellular communication systems

Wireless communication is of crucial importance in the information era, especially with the rapid trends toward digital communication industries. Furthermore, the growing demand for physical mobility and service portability is one of the driving market forces for personal communication systems. A 3V data transceiver chip is described for both the conventional analog and dual-mode analog/digital cellular mobile telephone systems. With enhanced data reception capability, it features a low operating voltage, low power consumption and is suitable for battery-operated, hand-held operation. Our development of the data transceiver chip adopts the mixed analog/digital approach to greatly simplify the integration of the mobile phone set.