May 05, 2004 - Analog Devices, Inc. announced its X-PATM GSM/GPRS power amplifier module family has achieved full type approval (FTA) with several leading OEM and ODM GSM cellular handset manufacturers in China, Taiwan, and Korea. An important milestone in the cellular phone certification process, FTA must be complete before production shipments can begin.
The X-PA family is the industry's only power amplifier solution to utilize a true power control approach for superior signal integrity under all conditions. The patented technique combines a directional power coupling function with a proprietary logarithmic control IC in one module to achieve unparalleled control performance under the harshest voltage standing wave ratio (VSWR) conditions. Directional coupling is the most widely used method for measuring transmitted output power in cell phones. In addition, Analog Devices' X-PA technology enables more accurate power control than competitive power amplifier architectures.
About the X-PA Family
The X-PA family is a high-power, high-efficiency GSM/GPRS mobile handset power amplifier module with integrated RF power control and measurement. The most recent member is the ADL5552, which is offered in a 6mm х 8mm multi-chip plastic package. By measuring and controlling the transmitted power through a directional coupler, the X-PA is setting the standard for robust VSWR and SAR (specific absorption rate) performance. The power amplifier family provides the most precise and most robust power control in the industry over a wide dynamic range. The X-PA architecture uses logarithmic detection to provide precise exponential (linear-in-dB) output power control over a range of 40dB. The X PA is employed in Analog Devices' SoftFoneВ® GSM/GPRS platform and the recently announced Nova Wireless Engine.
