A family of mobile WiMAX fourth-generation (4G) power amplifiers (PAs) supports cellular communications applications in the following frequency bands: 2.3 to 2.4 GHz (South Korea and Malaysia), 2.5 to 2.7 GHz (US, Taiwan, Russia, and Japan), and 3.4 to 3.6 GHz. To enable the design of equipment for use during the transition from fixed-point to mobile technologies, for example, the AWM6433 supports both the IEEE 802.16d-2004 and 802.16e-2005 standards. This PA exceeds 20 percent operating efficiency at +24 dBm output power and 30-dB gain when powered by a 3.3-V supply while meeting ETSI-recommended spectrum mask limits. It achieves less than 3 percent error vector magnitude (EVM) at +22 dBm from a +3.3-V supply and less than 3 percent EVM at +23 dBm from a +4.2-V supply. The AWM6433 includes an integrated 25-dB step attenuator, output power detector, and input and output RF impedance-matching circuits. It is offered in a 4.5-x-4.5-x-1.0-mm low-profile module.
ANADIGICS, Inc., 141 Mount Bethel Rd., Warren, NJ 07059; (908) 668-5000, FAX: (908) 668-5068, Internet: www.anadigics.com.