Two-Stage Amplifier Output Matching for Low-Power Efficiency

The patent changes the fundamental parameter of the circuit from distributed constant (transmission line) to lumped constant (discrete inductors and capacitors). This parameter change allows the phase adjustment function to be achieved with a compact circuit configuration using standard lumped elements, thereby reducing the circuit size while maintaining the efficiency improvement benefit

The patent substitutes the distributed constant circuit (analogous to a continuous mechanical system) with a lumped constant circuit using discrete electrical elements. This substitution enables the same phase adjustment function to be achieved with a smaller, more compact circuit implementation suitable for integrated circuits

The lumped constant circuit is designed to perform multiple functions simultaneously: impedance matching and phase adjustment. By integrating these functions into a single compact circuit block using standard lumped elements, the overall device complexity is reduced compared to using separate distributed constant circuits for each function

The patent uses standard, readily available lumped constant elements (inductors and capacitors) that are inexpensive and easy to manufacture. These discrete elements can be easily replaced or adjusted if needed, simplifying the overall device complexity compared to custom-designed distributed constant circuits