Comments on “Design of Highly Efficient Broadband Class-E Power Amplifier Using Synthesized Low-Pass Matching Networks”

In the above paper, the author presents a new methodology for designing and implementing high-efficiency broadband Class-E power amplifiers (PAs) using a high-order low-pass filter-prototype. The designed broadband class-E PA achieves a state-of-the-art performance compared to recently published results. However, an error has been found, which will be clarified in this Letters.