Abstract
AbstractIn this article, Doherty power amplifier (DPA) with dynamic load modulation (DLM) is proposed for wireless communications with high peak‐to‐average ratio (PAR) signals. The proposed DPA with DLM operates as a conventional DPA from peak to 6‐dB back‐off powers, and DLM starts to operate at lower power than 6‐dB back‐off. The DPA with DLM was designed using 6‐W GaN high mobility transistors (HEMTs) at 1.85 GHz. The fabricated DPA with DLM shows a power‐added efficiency (PAE) of 44.7% at 10‐dB back‐off power of continuous‐wave input signal, which is 5% higher than that without DLM. Dynamic measurement was also carried out using 3.84 MHz W‐CDMA signal with 7.4 dB PAR. The measurement of the DPA with DLM exhibits an average PAE of 32.1% at output power of 27.1 dBm, and adjacent channel leakage ratio (ACLR) of −45.1 dBc, which corresponds to 6.1% improvement in PAE compared with the DPA without DLM.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
