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Gigahertz
Integrated
Circuits Group |
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Main Research People Publications Group News Java Applets Lab Facilities Links microwave integrated circuits canada RF integrated circuits canada microwave circuits RF circuits mixers oscillators ultrawideband consultant microwave consultant integrated circuits consultant analog circuits |
   
Brief Research Overview We are conducting
research in
very high frequency (gigahertz-range) integrated circuits for communications,
radar, and biological applications. A major topic of research in our
group are CMOS active mixers. Recently we
demonstrated a wideband active mixer with a minimum
double-sideband noise figure (NF) of 2.4 dB. This is the lowest noise figure for
a CMOS active mixer reported to date, to the best of our knowledge.
In another recent achievement, we demonstrated the first dual-band
self-oscillating mixer (SOM)
for C-band and X-band applications. SOM's are highly specialized circuits
where a mixer its local oscillator are merged into a single circuit
block. Another research focus of our group are RF operational
transconductance amplifiers (OTA's). We
have pioneered the development of fully-differential microwave
CMOS OTA's
with bandwidths exceeding 10 GHz
and we have used those OTA's to create a 5.4 GHz reconfigurable
quadrature amplitude modulator, microwave tunable phase
shifters,
tunable active filters, and quasi-circulators with very small
size and low
power consumption. For further details abour our research,
please visit our projects page.
Research Funding Major sources of funding for our research activities have come from the following sources:
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