IHP presented fully integrated low-phase-noise 48 GHz
frequency synthesizer at SiRF 2008 in Orlando, USA
IHP has presented a silicon-based 48 GHz frequency synthesizer at the 2008 IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF 2008) in Orlando (PDF: 255 KB). This topical meeting is an international conference devoted to Si-based devices, passives, integrated circuits and applications for high-frequency systems.
Based on a novel circuit topology, the loop bandwidth of the PLL-based synthesizer was kept constant over the whole tuning range of 2.6 GHz. The phase noise is -98 dBc/Hz at 1 MHz offset from the 48 GHz carrier, which is the lowest value among previously published silicon-based integrated synthesizers above 30 GHz. The presented chip has been manufactured in IHP’s high-performance silicon-germanium BiCMOS technology named SG25H1. The synthesizer will be used for wireless communication in the 60 GHz band with data rates above one Gigabit per second.
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