Figure 6

Quantification of receiver signal without thermal noise at wide bandwidth, with and without notch filter ( Δ f = 65 MHz). Upper panel: in-phase/quadrature (I/Q) signal traces for f _RX=2.065 GHz, for a 40-MHz lowpass filter (green lines) and for a 40-MHz lowpass filter cascaded with a 65-MHz notch filter (black lines). Lower panel: power spectral densities and peakedness of the receiver signal for a 40-MHz lowpass filter (green) and for a 40-MHz lowpass filter cascaded with a 65-MHz notch filter (black). The thermal noise density is indicated by the horizontal dashed line. The width of the shaded band indicates the receiver noise figure (5 dB).