07039372 is referenced by 91 patents and cites 603 patents.

A method and system is described wherein an information signals is gated at a frequency that is a sub-harmonic of the frequency of the desired output signal. In the modulation embodiments, the information signal is modulated as part of the up-conversion process. In a first modulation embodiment, one information signal is phase modulated onto the carrier signal as part of the up-conversion process. In a second modulation embodiment, two information signals are multiplied, and, as part of the up-conversion process, one signal is phase modulated onto the carrier and the other signal is amplitude modulated onto the carrier. In a third modulation embodiment, one information signal is phase modulated onto the “I” phase of the carrier signal as part of the up-conversion process and a second information signal is phase modulated onto the “Q” phase of the carrier as part of the up-conversion process. In a fourth modulation embodiment, four information signals are phase and amplitude modulated onto the “I” and “Q” phases of the carrier as part of the up-conversion process. There are at least two implementations of each of the aforementioned embodiments.

Title
Method and system for frequency up-conversion with modulation embodiments
Application Number
9/548923
Publication Number
7039372 (B1)
Application Date
April 13, 2000
Publication Date
May 2, 2006
Inventor
Charley D Moses Jr
Jacksonville
FL, US
Richard C Looke
Jacksonville
FL, US
Robert W Cook
Switzerland
FL, US
Michael J Bultman
Jacksonville
FL, US
David F Sorrells
Middleburg
FL, US
Agent
Sterne Kessler Goldstein & Fox P L L C
Assignee
ParkerVision
FL, US
IPC
H04B 1/04
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