{
  "$type": "site.standard.document",
  "description": "Signal power management circuits (400) and smart cards (1000) including the same are provided. For example, a signal power management circuit (400) comprises a rectifier (420) that is configured to rectify a received radio frequency signal and output a first rectified voltage (VDDU PRE), a first…",
  "path": "/patents/1414480",
  "publishedAt": "2022-10-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G06K19/0701",
    "SAMSUNG ELECTRONICS CO LTD [KR]"
  ],
  "textContent": "Signal power management circuits (400) and smart cards (1000) including the same are provided. For example, a signal power management circuit (400) comprises a rectifier (420) that is configured to rectify a received radio frequency signal and output a first rectified voltage (VDDU PRE), a first regulator (430) that is configured to maintain the first rectified voltage at a predetermined first voltage level, and a second regulator (440) that is configured to receive an output of the first regulator and maintain a second rectified voltage (VDDU) different from the first rectified voltage at a predetermined second voltage level. A signal detector (470) of the signal power management circuit is configured to receive the first rectified voltage and the second rectified voltage and detect a signal component of the received radio frequency signal on the basis of a difference between the first voltage level of the first rectified voltage and the second voltage level of the second rectified voltage.",
  "title": "SIGNAL POWER MANAGEMENT CIRCUITS AND SMART CARDS INCLUDING THE SAME"
}