| http://www.w3.org/ns/prov#value | - tic signal, and transforms for sameUS777368820 d???c. 200410 ao???t 2010Parkervision, Inc.Method, system, and apparatus for balanced frequency up-conversion, including circuitry to directly couple the outputs of multiple transistorsUS782240112 oct. 200426 oct. 2010Parkervision, Inc.Apparatus and method for down-converting electromagnetic signals by controlled charging and discharging of a capacito
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