Cellular operators have longed for the ability to deploy versatile wireless infrastructure that can be field programmed to serve a range of cellular services. Ultimately the wireless infrastructure ...

Building 2.5/3G mobile phones may seem like an exciting venture. But, once you dive into the designs, they are an RF and mixed-signal nightmare. These mobiles must support high-speed Internet access, ...

Direct down conversion, and its companion, very low IF (VLIF) or near-zero IF, are approaches that have essentially changed the face of the receive chain in a mobile handset. For the designer, it is ...

Direct conversion (or low IF) receiver designs have been in existence for many years. They are widely used in mobile phones and cordless telephones because of their simplicity and lower cost. However, ...

In today's wireless-receiver architecture, an evolving trend places the digital-signal-processor (DSP) subsystem closer to the radio-frequency (RF) antenna. This trend highlights a need for innovative ...