CDMA Tri-Mode Receiver with Advanced Position Location

The RFR3300 is an RF-to-IF front-end receiver designed for cellular, PCS and GPS signal processing. The device is the first front-end receiver in the industry to integrate GPS capability with CDMA. The integration of a GPS receiver into a CDMA/AMPS receiver eliminates the need for an extra stand-alone GPS RF receiver.

The device, a SiGe BiMOS RFIC that provides high linearity with low power consumption, integrates dual-band low noise amplifiers (LNAs) and mixers for downconverting from RF to CDMA and FM IF, and contains a dedicated LNA and mixer designed for downconverting GPS signals from RF to IF. The RFR3300 receiver operates in the 832 MHz-894 MHz cellular band, 1840 MHz-1990 MHz PCS band and 1575 MHz GPS band. It meets cascaded Noise Figure (NF) and Third-Order Intercept Point (IIP3) requirements of IS-98 and JSTD-018 for sensitivity, and two-tone intermodulation. The solution is also designed to meet the stringent sensitivity requirements for GPS-based position location technology.

The cellular LNA in the device offers gain control capability for improving dynamic range and performance in the presence of high levels of interference. Reducing the gain in the LNA also improves power consumption. It is designed for use with voltage ranges from 2.7 V to 3.15 V, and is available in a 5 millimeter by 5 millimeter 32-pin BCC++ plastic package.

QUALCOMM Incorporated, 5775 Morehouse Drive, San Diego, CA 92121. Tel: 800-348-7227; Fax: 858-658-1578.