Linearization of high-frequency Doherty power amplifiers using artificial neural networks

سال انتشار: 1403
محل انتشار: سومین کنفرانس بین المللی پیشرفت های اخیر در مهندسی، نوآوری و تکنولوژی
کد COI اختصاصی: EITCONF03_019
زبان مقاله: انگلیسی
تعداد مشاهده: 99

نویسندگان

Department of electrical engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.

Department of electrical engineering, Arak Branch, University, Arak, Iran.

چکیده

The Doherty power amplifier is an RF design of a class B amplifier configuration that achieves high efficiency by having two amplifier sections. One amplifier section is suitable for lower-amplitude signal conditions. Then a second amplifier is introduced to meet the requirements of higher-level signals without compression. In this way, the Doherty amplifier can provide both linearity and efficiency. The concept of the Doherty power amplifier configuration was invented by William H. Doherty of Bell Telephone Laboratories in ۱۹۳۶, and various studies have been conducted in this field. One of the current discussions in the scientific community is the linearization problem, which in this thesis was addressed by linearizing the Doherty amplifier using a neural network. For this purpose, coding was done in MATLAB software and the M-File environment. And the results obtained by the neural network with the linearization method were compared with the polynomial method and real values. For this, a bandwidth of ۲ GHz was considered. The results showed that the trained network can perform up to ۹۸% linearly.

کلیدواژه ها

Doherty amplifier, linearization, high frequency, neural network

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.