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Pyroelectric demodulating detector

United States Patent

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July 8, 2008
View the Complete Patent at the US Patent & Trademark Office
Zero-Power Radio Receiver
A pyroelectric demodulating detector (also termed a pyroelectric demodulator) is disclosed which utilizes an electrical resistor stacked upon a pyroelectric element to demodulate an rf or microwave electrical input signal which is amplitude-modulated (AM). The pyroelectric demodulator, which can be formed as a hybrid or a monolithic device, has applications for use in AM radio receivers. Demodulation is performed by feeding the AM input signal into the resistor and converting the AM input signal into an AM heat signal which is conducted through the pyroelectric element and used to generate an electrical output signal containing AM information from the AM input signal.
Brocato; Robert W. (Sandia Park, NM)
Sandia Corporation (Albuquerque, NM)
11/ 431,776
May 10, 2006
329/347 250/338.3
H03D 1/00 (20060101)
GOVERNMENT RIGHTS This invention was made with Government support under Contract No. DE-AC04-94AL85000 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.