BIASING CIRCUITRY FOR A DIODE DETECTOR

The invention relates to a biasing circuitry in a power level detector used for power control of a high-frequency power amplifier. According to the invention, to compensate for variation caused in the detector diode (D) threshold voltage by temperature changes, a constant-power source (T, R1, R2) is...

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Bibliographische Detailangaben
1. Verfasser:	SAARNIMO, TIMO
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BASIC ELECTRONIC CIRCUITRY DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The invention relates to a biasing circuitry in a power level detector used for power control of a high-frequency power amplifier. According to the invention, to compensate for variation caused in the detector diode (D) threshold voltage by temperature changes, a constant-power source (T, R1, R2) is used by means of which the operating point of the detector diode (D) is set at a constant level and close to the angle point of the threshold voltage of the diode (D).