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| Number | Title | Issue Date |
| 8076970 | Adaptive demodulator An adaptive demodulator for a contactless device, including a rectifier configured to rectify a voltage which is dependent on a signal received by the contactless device, and a voltage regulator coupled to the rectifier and configured to adjust the voltage to be wit... | 12/13/2011 |
| 7292093 | Envelope detector with DC level shifting An envelope detector that does not generate an undesirable DC offset at its DC output signal. An envelope detector according to the present teachings includes a circuit for performing a DC level shift on an AC input signal applied to the envelope detector such that ... | 11/06/2007 |
| 6265940 | Detector and transmitter incorporating the detector A detector comprises a first diode for detecting a high-frequency signal applied to the detector, a bias unit for supplying a predetermined bias voltage to the first diode; a first resistor having an end connected to the bias unit and another end connecte... | 07/24/2001 |
| 6255901 | Demodulator for ask-modulated signals having small modulation depth A demodulator circuit for demodulating a signal ASK-modulated with modulation pulses equal in duration, and having a small depth of modulation and large dynamic range comprises an amplitude limiter (10) through which an amplitude-dependent current flows w... | 07/03/2001 |
| 6097247 | Low threshold voltage diode-connected FET A diode device with a low or negligible threshold voltage includes at least one field effect transistor, the gate of the field effect transistor being connected to the drain of the field effect transistor. The threshold voltage of the diode device is appr... | 08/01/2000 |
| 4490681 | Signal level detector with automatic switching between extended linear and square law dynamic ranges A signal level detector including a diode envelope detector has a characteristic having both square-law and linear-law ranges separated by an intermediate transition range of variable-law operation. The detector is provided with circuits (38, 47, 48) to e... | 12/25/1984 |
