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ParkerVision Granted Second Patent for its Innovative d2p RF Transmit Chain Technology
Thursday, February 07, 2008
Jacksonville, FL -- ParkerVision, Inc. (Nasdaq: PRKR), a developer and marketer of semiconductor technology solutions for wireless applications, announces its second patent granted by the United States Patent and Trademark Office for its d2p (Direct2Power) technology, patent number 7,327,803. This patent is the second in a series of pending applications filed in the United States and internationally for ParkerVision's d2p (Direct2Power) technology. The first patent, patent number 7,184,723, contains more than 90 claims directed towards ParkerVision's multiple-input, single-output (MISO) amplifier.
ParkerVision's latest d2p patent grant further delineates the company's innovative approach to creating highly efficient RF carriers at desired signal power. The patent contains more than 100 claims that detail linearity and efficiency enhancements to the d2p system. For example, a portion of the control function of the d2p architecture dynamically blends biasing with outphasing to significantly improve the efficiency and linearity of a modulated RF carrier in a practical system. When used in conjunction with ParkerVision's MISO technology this approach yields complete and fully integrated RF transmit chains that exhibit excellent linearity and high efficiency while eliminating the need for power combiners.
"With each patent issuance our technology portfolio grows and becomes better protected and substantiated. This is important to the success of ParkerVision and to the adoption of d2p technology within the wireless industry," said David Sorrells, ParkerVision's Chief Technology Officer, "This issuance gives us a much better opportunity to more openly share our technological developments. I am pleased with the progress we have made, and I look forward to more issuances in the future as we continue to build on our success."
ParkerVision's prototype integrated circuits are manufactured using an IBM silicon germanium (SiGe) semiconductor process. The company is currently engaged in designing both transmit chain (d2p) and receiver (d2d or Direct2Data) products for its customers.
ParkerVision is focused on the commercialization of its proprietary RF communication technologies that enable significant advancements in wireless products and services. These technologies are described collectively as Energy Signal Processing (ESP). ESP optimally processes RF waveform energy, eliminating costly and inefficient circuit processes inherent in traditional RF designs.
ParkerVision's solutions will initially address key needs for extended battery life, reduced cost and higher performance in mobile handsets as the cellular industry migrates to next generation networks. The company's extended business strategy targets additional market opportunities in communications and networking where it can leverage its ESP technologies for products and services in an increasingly wireless world.
Safe Harbor Statement
This press release contains forward-looking information. Readers are cautioned not to place undue reliance on any such forward-looking statements, each of which speaks only as of the date made. Such statements are subject to certain risks and uncertainties which are disclosed in the Company's SEC reports, including the Form 10-K for the year ended December 31, 2006 and the Forms 10-Q for the quarters ended March 31, 2007, June 30, 2007 and September 30, 2007. These risks and uncertainties could cause actual results to differ materially from those currently anticipated or projected.
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