CAMBRIDGE, United Kingdom -- (BUSINESS WIRE) -- Nujira today announced that it has been granted two key Envelope Tracking patents in the US – taking its portfolio to 65.

Nujira Coolteq™ power modulators based on ET are dramatically improving the power efficiency of the next generation of 3G/4G cellular base stations, handsets, digital broadcast transmitters and military communications systems.

“Nujira has developed the world’s most extensive and complete patent portfolio around Envelope Tracking, and currently has 65 patents filed or granted worldwide,” said Tim Haynes, CEO of Nujira. “Several of our core patents, including those recently granted in the US, act as blocking IPR for anyone trying to develop commercially viable Envelope Tracking Power Amplifiers for cellular infrastructure, handsets and digital TV. As Envelope Tracking becomes the de-facto standard for high efficiency PAs in handsets, USB modems, and wireless infrastructure, we will be further building out and defending our IPR portfolio to maintain our leadership position.”

Tim Haynes continued, “We have seen evidence to suggest that our key patents are also being used by others in their early proof of concept demonstrators. Although we remain the leader in commercial-grade Envelope Tracking modulators, these developments endorse the validity of our approach, are healthy for the industry and good for Nujira.”

Envelope Tracking dynamically reduces the electrical power to a radio transmitter at times of low signal amplitude, and increases it when a powerful signal is required. Whilst this principle has been known and actively studied since the 1930’s, Nujira has been the first to successfully address the challenge of tracking the transmitted signal accurately in commercial products for 3G, 4G and Digital TV applications. Nuijra’s patent portfolio covers the technical breakthroughs that underpin this implementation.