Is solid-state RF the next energy source?

THE NETHERLANDS & USA: Could radio-frequency signals become the next major energy source for industrial, scientific and medical (ISM) applications?

At the IEEE International Microwave Symposium this week, NXP Semiconductors N.V. is introducing the industry's first complete RF power transistor portfolio designed specifically for the 2.45-GHz ISM frequency band, enabling RF energy to be used as a clean, highly efficient and controllable heat source.

NXP is demonstrating a wide range of RF-powered applications at IMS 2013, including an RF spark plug -- a compelling alternative to conventional ignition systems for automotive engines; an RF plasma lamp delivering bright, sun-like light at 140 lumens per watt; and a solid-state cooker that can heat food safely, uniformly and precisely.

Optimally matched to the 2.45-GHz ISM band, the NXP BLF2425M and BLF25M series of RF power transistors achieve best-in-class efficiencies in excess of 52 percent and offer a full range of power levels between 12 and 350 W. NXP developed this dedicated ISM portfolio while working with lead customers on RF-powered solutions for home appliances for cooking, heating and drying; medical devices for precision medical procedures; and automotive engines.

The devices are based on NXP's latest 28V LDMOS processes and all feature NXP's field-proven ruggedness, manufacturing consistency and long-term reliability, which enable these transistors to drive the typically mismatched loads of ISM applications.