NIST researchers develop new microwave mixer theory; Aid industrial development of calibration procedure.NIST (National Institute of Standards & Technology, Washington, DC, www.nist.gov) The standards-defining agency of the U.S. government, formerly the National Bureau of Standards. It is one of three agencies that fall under the Technology Administration (www.technology. researchers, along with a foreign guest researcher, developed a mixer theory based on a set of simple rules for transforming multiple-frequency mixer problems into equivalent single-frequency problems. The theory is significant because it allows a number of system problems involving mixers and frequency conversion to be solved analytically and because it demystifies this rather esoteric es·o·ter·ic adj. 1. a. Intended for or understood by only a particular group: an esoteric cult. See Synonyms at mysterious. b. subject. The theory has found immediate application in the development of vector-network-analyzer algorithms for image-mixer characterization. Working from a rough draft of a manuscript describing the theory, an industry partner was able to immediately apply the simple rules outlined in the theory to understand and develop a calibration calibration /cal·i·bra·tion/ (kal?i-bra´shun) determination of the accuracy of an instrument, usually by measurement of its variation from a standard, to ascertain necessary correction factors. algorithm for testing image mixers. The new algorithm already has been implemented in the firmware A category of memory chips that hold their content without electrical power. Firmware includes flash, ROM, PROM, EPROM and EEPROM technologies. When holding program instructions, firmware can be thought of as "hard software." See flash memory, ROM, PROM, EPROM, EEPROM and FOTA. of a popular commercial network analyzer A specialized hardware device or software in a desktop or laptop computer that captures packets transmitted in a network for routine inspection and problem detection. Also called a "sniffer," "packet sniffer," "packet analyzer," "traffic analyzer" and "protocol analyzer," the network . The algorithm soon will be available to engineers in the new network analyzers offered by the company, as well as in a software upgrade. CONTACT: Robert Judish, (301) 975-3380; robert.judish@nist.gov. |
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