TU/e Research Portal · 2001 · 99 citations · 1 references
EngineeringElectrical EngineeringAnalog ElectronicsMicroelectronicsPassive DesignCmos Circuit DesignLow-noise Circuit DesignMixed-signal Integrated Circuit DesignNoiseRadio-frequency Integrated CircuitsReceiver Systems1/F Noise (Analog Circuits)Low-noise AmplifiersLow-noise MixersMixer CircuitsMixersNoise In AmplifiersNoise SourcesPassive Mixers
Passive mixers are generally thought attractive as having no 1/f noise sources when used in AC coupled configurations, in contrast to the conventional «Gilbert» type circuit. In this paper, we show that not only does this type of mixer exhibit internal 1/f noise, but with a poor choice of device sizes, one can magnify the noise of a subsequent amplifier stage. The mechanisms underlying these phenomena are examined, and some design recommendations offered.
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