Industry’s first ultra-wideband Doherty amplifiers support broadband operation
The new 70 W DVB-T LDMOS designs bring the high-efficiency gains of Doherty topologies to broadcast transmitters, using NXP’s patent-pending architecture capable of operating across an ultra-wideband spectrum.
Whereas traditional UHF technologies such as class AB typically reach only 30% efficiency, Doherty solutions are capable of reaching 45-50% power amplifier efficiency. The ultra-wideband Doherty design uses NXP’s mature leading-edge 50 V LDMOS technology, and the ruggedness of the BLF884P and BLF884PS make them ideal for digital broadcast transmitters.
Mark Murphy, director of marketing, RF power and base stations, NXP Semiconductors, said: “Given the immense pressure to deliver richer content via high-performance TV transmitters, we believe that the impact of ultra-wideband Doherty architectures on the overall digital broadcast market will be wide-ranging. At an average DVB-T power level of 70 W, the BLF884P/PS ultra-wideband Doherty reference design is extremely well suited for gap filler applications.”
Availability
The BLF884P and BLF884PS are now in production, with product samples and reference designs available immediately to qualified customers.
More information about the BLF884P and BLF884PS Doherty power amplifiers at
www.nxp.com/pip/BLF884P and www.nxp.com/pip/BLF884PS
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