Freescale Claims New Amp Is More Than 50 Percent Efficient

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Among the new device announcements resulting from this week's International Microwave Symposium in Tampa Bay, Fla. was one from Freescale which touted its Airfast LDMOS power devices' ability to break the 50 percent Doherty efficiency barrier.

One of the initial second-generation Airfast products is the A2T07H310-24S 300 Watt asymmetrical Doherty transistor for wireless infrastructure applications in the 720-960 MHz band. Freescale said the device breaks the 50 percent efficiency barrier at 8 dB back-off with 55 dBm peak power (316 Watts) and 18.9 dB gain.

The Freescale news release said: "Additionally, second-generation Airfast power amplifiers expand the portfolio’s breadth to include two-stage integrated circuits, incorporating multiple gain stages in a single package; as well as adding new offerings based on gallium nitride (GaN) and 48V LDMOS process technology."

For more information on Freescale power devices, including devices for VHF/UHF broadcasting, see the Freescale RF Power product page.

Doug Lung
Doug Lung
Contributor

Doug Lung is one of America's foremost authorities on broadcast RF technology. As vice president of Broadcast Technology for NBCUniversal Local, H. Douglas Lung leads NBC and Telemundo-owned stations’ RF and transmission affairs, including microwave, radars, satellite uplinks, and FCC technical filings. Beginning his career in 1976 at KSCI in Los Angeles, Lung has nearly 50 years of experience in broadcast television engineering. Beginning in 1985, he led the engineering department for what was to become the Telemundo network and station group, assisting in the design, construction and installation of the company’s broadcast and cable facilities. Other projects include work on the launch of Hawaii’s first UHF TV station, the rollout and testing of the ATSC mobile-handheld standard, and software development related to the incentive auction TV spectrum repack. A longtime columnist for TV Technology, Doug is also a regular contributor to IEEE Broadcast Technology. He is the recipient of the 2023 NAB Television Engineering Award. He also received a Tech Leadership Award from TV Tech publisher Future plc in 2021 and is a member of the IEEE Broadcast Technology Society and the Society of Broadcast Engineers.