Front end and high frequency receiver having quadrature low noise amplifier

Front end and high frequency receiver having quadrature low noise amplifier

A front end and a high frequency receiver provided therewith are described, which front end comprises a quadrature low noise amplifier (--) as a low noise amplifier. A high isolation between local oscillators (--) and quadrature mixers (--) is achieved thereby, reducing a DC offset at mixer outputs....

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Bibliographische Detailangaben
Hauptverfasser: Dijkmans, Eise Carel, Leenaerts, Dominicus Martinus Wilhelmus, Baltus, Petrus Gerardus Maria
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A front end and a high frequency receiver provided therewith are described, which front end comprises a quadrature low noise amplifier (--) as a low noise amplifier. A high isolation between local oscillators (--) and quadrature mixers (--) is achieved thereby, reducing a DC offset at mixer outputs. The quadrature low noise amplifier may be implemented as a differential class AB cascade arrangement of MOST or FET semiconductors. A low distortion receiver having a high linearity is the result.