Discrete Distributed Amplifier
Using metamaterial (MTM) theory and Transmission Lines (TL) to conjugate the lead inductive impedances using composite right-left handed transmission lines (CRLH TLs) have enabled a whole new spectrum of applications in microwave design.
This type of TL supports an anti-parallel group and phase velocities (backward wave) , infinite wavelength propagation at the 0-order resonance, equivalent negative constitutive parameters ε_r and µ_r , among others.

Discrete pad and lead inductance makes this impossible but with well controlled impedances and 3D shielded isolation , MMIC use is acceptable to 5GHz and up with more skill.
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