Integrated circuits for multiband multimode receivers

The need for different types of wireless connections to mobile terminals has increased rapidly during the last few years. The mobile terminal must be able to connect to globally existing cellular networks, as well as to different ad-hoc networks. The receivers designed for these terminals must achieve a high integration level and a high level of component sharing to meet the strict size and cost requirements. In addition, the performance of a multimode receiver must be compatible with existing single-system receivers. New process technologies, which use low supply voltages and are optimised for digital circuitry, set additional challenges for future receiver design. Several integrated receiver ICs for the multimode and multiband transceivers have been published to meet these demands. This paper gives a review of these circuit solutions and a brief introduction to the demands set by different systems and receiver architectures for the design of the multimode and multiband receiver