Telecoms, Datacoms, Wireless, IoT


Power amplifiers for WCDMA and HSPA+

15 April 2009 Telecoms, Datacoms, Wireless, IoT

RF Micro Devices has released the new RF720x family of WCDMA/HSPA+ power amplifiers (PAs). Comprised of four PAs designed for 3G multimode devices implementing mode-specific, band-specific front end architectures, the product family accommodates all major WCDMA/HSPA+ bands and band combinations.

The RF7200 (band 1), RF7206 (band 2), RF7203 (band 3, 4, 9 or 10) and RF7211 (band 11) are designed for single-band operation, while the RF7201 (band 1/8), RF7202 (band 2/5) and the RF7205 (band 1/5) feature two band-specific PAs integrated in a single module package. Each band of amplification is addressed with a band-specific high-efficiency, linear power amplifier designed to lower current consumption as output power levels decrease. The improvement in low-power efficiency is enabled through the use of three digital power modes that adjust bias current and optimise the PA for the desired output power range while maintaining linearity.

Each PA in the RF720x family includes an integrated output power coupler, which eliminates the need for external couplers in chipsets monitoring and adjusting PA output power. The integrated power coupler also reduces the board area required for front end implementation and lowers bill-of-material costs.



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