SORRELS, DAVID F (Total 15 Patents Found)

The system includes a base unit (11) sensitive to infrared (IR) signals (13) transmitted by a mobile remote unit (12) to an IR receiver (16) which is placed behind a rotating set of signal blocking blinders (62) whose position at any time defines a view angle with a position known with precision resulting in the IR sig...
An apparatus, system, and method are provided for energy conversion. For example, the apparatus can include a trans-impedance node, a reactive element, and a trans-impedance circuit. The reactive element can be configured to transfer energy to the trans-impedance node. The trans-impedance circuit can be configured to r...
Un aparato para la conversión ascendente de señaleUn aparato para la conversión ascendente de señales IQ moduladas en fase, caracterizado por: al menos IQ moduladas en fase, caracterizado por: al menos un primer módulo de conmutación (1822, 2802) ques un primer módulo de conmutación (1822, 2802) que recibe al m...
A method and system is described wherein a signal with a lower frequency is up-converted to a higher frequency. In one embodiment, the higher frequency signal is used as a stable frequency and phase reference. In another embodiment, the invention is used as a transmitter. The upconversion is accomplished by controlling...
Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal are described herein. Briefly stated, such methods, systems, and apparatuses operate by receiving an EM signal and an aliasing signal having an aliasing rate. The EM signal is aliased according to the aliasing...
Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal are described herein. Briefly stated, such methods, systems, and apparatuses operate by receiving an EM signal and an aliasing signal having an aliasing rate. The EM signal is aliased according to the aliasing...
A method and system is described wherein a signal with a lower frequency is up-converted to a higher frequency. In one embodiment, the higher frequency signal is used as a stable frequency and phase reference. In another embodiment, the invention is used as a transmitter. The upconversion is accomplished by controlling...
The system includes a base unit (11) sensitive to infrared (IR) signals (13) transmitted by a mobile remote unit (12) to an IR receiver (16) which is placed behind a rotating set of signal blocking blinders (62) whose position at any time defines a view angle with a position known with precision resulting in the IR sig...
Apparatus for down-converting an electromagnetic (EM) signal receives an EM signal and an aliasing signal having an aliasing rate. The EM signal is aliased according to the aliasing signal to down-convert the EM signal. The term aliasing, as used herein, refers to both down-converting an EM signal by under-sampling the...
Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal, and applications thereof are described herein. Reducing or eliminating DC offset voltages and re-radiation generated when down-converting an electromagnetic (EM) signal is also described herein. Down-converti...