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University of Wyoming

UW Technologies Available for Licensing


Technology Disclosure: 00-007 Multifrequency Vector Calibration System

 

This technology enables a signal processing system to determine vector mismatch between a plurality of signal paths. For example, quadrature receiver systems operating in accordance with this technology can determine and correct vector mismatch across a range of frequencies, thus providing improved performance. Vector mismatch between in-phase and quadrature signal paths can be more accurately and efficiently determined and corrected across a range of frequencies to improve demodulator performance or image rejection. Vector mismatch between array elements can be better determined and corrected to improve array efficiency and sidelobe rejection.

The technology allows mismatch to be determined across a range of frequencies simply and efficiently, using straightforward and efficient techniques. The vector mismatch determination can be updated continuously or periodically, allowing nonstationary (i.e. time-varying) errors to be accommodated.

The technology also permits improved implementations of conventional mismatch determination systems. These implementations provide performance benefits even when mismatch is to be determined only at a single frequency. These benefits include the capability of (1) test signal injection at the RF stage, which allows mismatch in RF-to-IF components to be accounted for, and (2) the acquisition of lengthy sample sets.

Several other aspects of the technology provide efficient generation of test signals and efficient signal processing during calibration.

This technology is the result of a joint effort between the University of Wyoming and North Dakota State University. To find out more about the technology, see the issued patent (US Patent 7,088,765) and visit the NDSU Research Foundation website. If your company would like to learn more about this technology and how your company or may apply it in commercial situations, please contact the Executive Director, Dale Zetocha, Executive Director, NDSU Research Foundation.