Radio transmitter with transmit signal strength indicator and method thereof

A radio transmitter includes a power amplifier configured to receive an input voltage signal and output an output voltage signal; a transformer configured to receive the output voltage signal and output a load voltage signal to a load; a sensing inductor configured to output a sensed current signal...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Lin, Chia-Liang (Leon), Leong, Poh-boon, Sayilir, Serkan
Format:	Patent
Sprache:	eng
Schlagworte:	AMPLIFIERS BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY CONTROL OF AMPLIFICATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY INDUCTANCES MAGNETS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TRANSMISSION
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Beschreibung
Zusammenfassung:	A radio transmitter includes a power amplifier configured to receive an input voltage signal and output an output voltage signal; a transformer configured to receive the output voltage signal and output a load voltage signal to a load; a sensing inductor configured to output a sensed current signal in accordance with a magnetic coupling with the transformer; a digitally controlled phase shifter configured to receive the output voltage signal and output a phase-shifted voltage signal in accordance with a phase control code; a mixer configured to output a mixed current signal in accordance with a mixing of the sensed current signal and the phase-shifted voltage signal; and a transimpedance amplifier with of a low-pass response configured to convert the mixed current signal into a mean voltage signal.