SiGe bipolar 5.5 GHz dual-modulus prescaler

A SiGe bipolar dual-modulus /spl divide/64/65, /spl divide/32/33 prescaler implemented in commercially available Infineon SiGe bipolar technology is presented. A maximum operational frequency of 5.5 GHz has been measured for a supply current of 6 mA at 3.3 V. For a reduced supply current of 3.5 mA a maximum frequency of 4.0 GHz has been obtained. A comparison with a purely-Si prescaler clearly demonstrates the enhanced speed-power product of the SiGe technology.

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