The model RFX8000 multi-mode/multi-band transmitter integrated circuit (IC) from fabless semiconductor supplier RFaxis is a single-chip solution designed to deliver longer operating time on third-generation (3G) and fourth-generation (4G) cellular handsets. Based on 0.18-micron CMOS, the IC contains linear WCDMA/EDGE power amplifiers, switching functionality to support multiple modes/bands, and on-chip matching circuitry. As Mike Neshat, President and CEO of RFaxis explains, "our RFX8000 transmitter IC chip addresses the most critical challenge impacting the performance of 3G and 4G multi-mode/multi-band cell phones: transmit power efficiency and performance. In fact, the RFX8000 can enable a dramatic 200 percent to 400 percent improvement in the average (operational) power efficiency for such cell phones."