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A novel 12 GHz VCO designed and fabricated in a 0.18 µm SiGe BiCMOS technology is presented. Strongly magnetic coupled dual LC tanks with fixed and tunable capacitive elements are introduced to extend tuning range and improve phase noise. By hybrid using of varactor tuning, loaded transformer tuning and switched capacitor tuning, the proposed VCO achieves a wide tuning range of 4.3 GHz (36%) and output power of −9 dBm with only 4.5 mW power consumption and only 0.17 mm 2 chip area.

This paper presents our developed two-chip wireless communication system adhering to the IEEE S02.Had standards with a baseband IC (BBIC) integrated with a low power 60 GHz transceiver SOC (RFIC) and antennas. The novel low power 60GHz RFIC using a sub-harmonic sliding-IF scheme is fully integrated based on low cost SiGe O.IS urn BiCMOS process. The BBIC uses an adaptive time domain equalizer rather than the commonly used frequency domain equalizer to lower the requirements on power consumption.