2005 · 10 citations · 3 references
EngineeringElectrical EngineeringLow-power DesignMicroelectronicsMicrowave EngineeringAnalog Integrated CircuitsCmos Circuit DesignDigital Integrated CircuitsMicrowave Integrated CircuitsMixed-signal Integrated Circuit DesignRadio-frequency Integrated CircuitsAnalog-digital ConversionAnalog-to-digital Converter DesignDigital-to-analog ConvertersDirect Digital SynthesisFrequency SynthesisFrequency SynthesizersLow-power SynthesisMicrowave Frequency Synthesizers
This paper presents a low power high-speed direct digital synthesizer (DDS), designed in a 47 GHz SiGe technology. The ROM-less DDS includes an 8-bit accumulator and an 8 bit cosine-weighted digital-to-analog converter (DAC) operating at a maximum 5 GHz clock frequency. The DDS core occupies an area of 2 mm/sup 2/ and consumes less than 2 W power with a 3.3 V supply voltage. The 5 GHz MMIC provides a frequency synthesis and modulation means for L-band applications.
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