Comments on “Linear Hybrid Asymmetrical Load-Modulated Balanced Amplifier With Multiband Reconfigurability and Antenna-VSWR Resilience”

In the above paper, the authors present theoretical derivation on load modulation behavior and mismatch analysis of reconfigurable hybrid asymmetrical load-modulated balanced amplifier (H-ALMBA), which has high linearity, extended power back-off range, and enhanced back-off efficiency. It is also demonstrated that the designed H-ALMBA can be resilience to arbitrary load mismatch and recover its decent linearity and high efficiency over wide bandwidth through reconfiguration of CA supply voltage and turning-on sequence of BA1 and BA2. However, some incorrect formulas and inaccurate descriptions have been found, which may cause the reader’s confusion and misunderstanding. These corrections will be demonstrated and explained in this comment.