Multi-stage wide-band amplifier with intra-stage and inter-stage inductive coupling

A multi-stage amplifier comprising:

• a first stage comprising a first common-source amplifier, a first inductive load network comprising a serial connection of a first load resistor and a first load inductor, and a first source network configured to receive a first signal and output a first load signal, and a first inter-stage inductor configured to couple the first load signal to a second signal;
• and
• a second stage comprising a second common-source amplifier, a second inductive load network comprising a serial connection of a second load resistor and a second load inductor, and a second source network configured to receive the second signal and output a second load signal, and a second inter-stage inductor configured to couple the second load signal to a third signal, wherein:
• the first load inductor and the first inter-stage inductor are laid out to enhance a first intra-stage inductive coupling, the second load inductor and the second inter-stage inductor are laid out to enhance a second intra-stage inductive coupling, and the first load inductor and the second load inductor are laid out to enhance an inter-stage inductive coupling.