RECEIVER CIRCUIT AND WIRELESS COMMUNICATION APPARATUS WITH MIXER CIRCUIT

PROBLEM TO BE SOLVED: To provide a mixer which can properly remove second-order harmonic distortion components due to transconductance imbalance in a core.SOLUTION: An output signal from a low-noise amplifier circuit is coupled to a mixer input port of the mixer circuit via an AC coupling circuit co...

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Bibliographische Detailangaben
Hauptverfasser:	NEDER ANDREAS, NILSSON MACGENIUS, MATTSON THOMAS, MATTISON SVEN
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a mixer which can properly remove second-order harmonic distortion components due to transconductance imbalance in a core.SOLUTION: An output signal from a low-noise amplifier circuit is coupled to a mixer input port of the mixer circuit via an AC coupling circuit comprising an inductive or capacitive coupling circuit. For capacitive coupling configurations, a coupling capacitor is configured to have a capacitance value determined as a function of a transconductance sensitivity of the mixer circuit.