1
Claude A Sharpe, Dwaine S Hurta, Mark A Hamlett: Multi-stage transponder wake-up, method and structure. Texas Instruments Incorporated, Rebecca A Mapstone, James C Kesterson, Richard L Donaldson, April 15, 1997: US05621412 (375 worldwide citation)

A system and method which conserves energy in the operation of a transponder or tag (14) by providing that the transponder (14) be enabled or awakened in multiple stages. A threshold detector (62) is provided which measures the power level of received RF energy. If the RF energy received by the dete ...


2
Claude A Sharpe, Dwaine S Hurta, Mark A Hamlett, Guenther Froschermeier: Multi-stage transponder wake-up, method and structure. Texas Instruments Incorporated, Texas Instruments Deutschland, Brian C McCormack, James C Kesterson, Richard L Donaldson, November 28, 1995: US05471212 (77 worldwide citation)

A system and method which conserves energy in the operation of a transponder or tag (14) by providing that the transponder (14) be enabled or awakened in multiple stages. A threshold detector (62) is provided which measures the power level of received RF energy. If the RF energy received by the dete ...