Detector and transmitter incorporating the detector
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United States of America Patent
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Jul 24, 2001
Grant Date -
N/A
app pub date -
May 4, 2000
filing date -
Jan 18, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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 connected to the first diode, a second diode connected in series with the first diode and having a same characteristic as the first diode, a second resistor having an end connected to the second diode and another end connected to a ground, and a detected voltage output terminal directly connected to a junction between the first diode and the second diode. The sum of a detected voltage generated by the first diode and a DC offset voltage caused by the bias voltage appears at the detected voltage output terminal. The first resistor has a resistance value different from that of the second resistor, and those resistance values are set to compensate for variations in the detected voltage with temperature.
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