Ultra-Wideband Imaging Systems for Breast Cancer Detection - Ultra-Wideband and 60 GHz Communications for Biomedical Applications - page 93

100

50

0

Zero
Pole
New Pole
New Zero

−50

−100

−12 −10 −8 −6 −4 −2 0

Real (GHz)

a

100

50

0

−50

Pole
Zero
New Pole

−100

−12 −10 −8 −6 −4 −2 0

Real (GHz)

b

Fig. 14 a Pole-Zero analysis results after addition of L D and b after addition of both L D and L C

there will be no gain increment from 6.13 GHz, until 9.2 GHz, which is the start of
the gain decrease.

Noise Figure

There are two important factors that determine the noise of this low-noise amplifier.
First are the losses of input matching network, and second is the input transistor
M 1 . Generally, the noise of the input matching filter, which is basically due to
nonidealities of its reactive components, is negligible in comparison with the noise
of the other stages.