Nujira Demonstrates Ultra High Efficiency Power Amplifier.Business Editors/High-Tech Writers CAMBRIDGE, England--(BUSINESS WIRE)--May 20, 2004 Breakthrough Modulator Modulator Any device or circuit by means of which a desired signal is impressed upon a higher-frequency periodic wave known as a carrier. The process is called modulation. The modulator may vary the amplitude, frequency, or phase of the carrier. Technology to Benefit WCDMA (Wideband CDMA) A 3G high-speed digital data service provided by cellular carriers that use the TDMA or GSM technology worldwide, including AT&T (formerly Cingular) and T-Mobile in the U.S. and OFDM (Orthogonal Frequency Division Multiplexing) A digital transmission technique that uses a large number of carriers spaced apart at slightly different frequencies. Systems Nujira Ltd, the Cambridge based company developing advanced power amplifier Power amplifier The final stage in multistage amplifiers, such as audio amplifiers and radio transmitters, designed to deliver appreciable power to the load. technology, today announced that it is demonstrating its industry leading system to customers. Nujira's patent pending technology, which is suitable for WCDMA and OFDM modulation schemes, can deliver amplifier efficiencies of 35%. Nujira's core technology advancement is the development of a modulator capable of delivering widely varying supply voltages and currents into an RF transistor load at very high accuracy and efficiency. The so called HAT (High Accuracy Tracking) system enables RF devices to be modulated mod·u·late v. mod·u·lat·ed, mod·u·lat·ing, mod·u·lates v.tr. 1. To adjust or adapt to a certain proportion; regulate or temper. 2. on their drain in precise unison with the Radio Frequency envelope - the result being ultra high efficiency. This modulator is found at the heart of Envelope Tracking or Envelope Elimination and Restoration systems. Tim Haynes, Nujira's CEO (1) (Chief Executive Officer) The highest individual in command of an organization. Typically the president of the company, the CEO reports to the Chairman of the Board. , said "We are demonstrating a 20 Watt multi-carrier WCDMA amplifier using high accuracy envelope tracking. Delivering modulator efficiencies of over 90% at such high bandwidths and RF powers is the most difficult of scenarios, which is why this is such a truly remarkable achievement. Even in these extreme cases, efficiencies three times those of existing products are achievable." Nujira further claims that their ultra high efficient power amplifier technology is both frequency agnostic ag·nos·tic n. 1. a. One who believes that it is impossible to know whether there is a God. b. One who is skeptical about the existence of God but does not profess true atheism. 2. and scaleable for different power levels, and as such is suitable for many systems, including the much talked about WiMAX standard. Samples of Nujira's modulator technology will be available for selected customers in Q3 2004, with production units available in 2005. The first products have been designed for Power Amplifier vendors and OEMs for high power cellular infrastructure applications. A complete WCDMA PA reference design with lineariser will be available in Q4 2004. Haynes concluded "Nujira has developed a real breakthrough in amplifier technology, and we are geared up to deliver this to the telecoms industry. Nujira is demonstrating that the poor efficiencies associated with WCDMA and OFDM systems need no longer be the case. The world of power amplifier design is about to change and Nujira is leading the way." About Nujira Ltd Nujira Ltd is a Cambridge based company developing power amplifier technology for the wireless communications wireless communications System using radio-frequency, infrared, microwave, or other types of electromagnetic or acoustic waves in place of wires, cables, or fibre optics to transmit signals or data. industry. Nujira's proprietary High Accuracy Tracking (HAT) technology enables ultra high efficiency amplifiers for a variety of systems, including WCDMA and OFDM systems. Nujira's initial focus is targeted on the cellular infrastructure market, though the technology is generally frequency and standard agnostic. For further information please visit www.nujira.com. |
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