Single-Stage Quadrature LMVs

This paper proposes three kinds of single stage RF front-end, called
quadrature LMVs (QLMVs), by merging LNA, single-balanced mixer, and
quadrature voltage-controlled oscillator (VCO) exploiting a series LC (SLC)
network. The low intermediate frequency (IF) or baseband signal near dc can
be directly sensed at the drain nodes of the VCO switching transistors by
adding a simple resistor-capacitor (RC) low-pass filter (LPF). Using a 65 nm
CMOS technology, the proposed QLMVs are designed. Oscillating at around
2.4 GHz band, the proposed QLMVs achieve the phase noise below
‒107 dB/Hz at 1 MHz offset frequency. The simulated voltage conversion
gain is larger than 30 dB. The double-side band (DSB) noise figure (NF) of
the proposed QLMVs is below 10 dB. The QLMVs consume less than
0.51 mW dc power from a 1-V supply.