DOHERTY POWER AMPLIFIERS PART 1
نویسندگان
چکیده
منابع مشابه
Advanced design features of Doherty power amplifiers
A Doherty power amplifier (DPA) is an effective structure born in 1936 which, after a scarce revival around year 2000), had been strengthened from 2005 because its capability to combine linear amplification with power efficiency. Despite the conceptual simplicity of its basic operation, a lot of practical drawbacks shrink the theoretical behavior, thus leading a significant number of research w...
متن کاملEfficiency Enhancement of Base Station Power Amplifiers Using Doherty Technique
The power amplifiers are typically the most power-consuming block in wireless communication systems. Spectrum is expensive, and newer technologies demand transmission of maximum amount of data with minimum spectrum usage. This requires sophisticated modulation techniques, leading to wide, dynamic signals that require linear amplification. Although linear amplification is achievable, it always c...
متن کاملTheory and Design of Wideband Doherty Power Amplifiers
The Doherty power amplifier (DPA) is one of the most popular power amplifier architectures for obtaining high average efficiency for modern communication signals with high peak-to-average power ratios (PAPR). However, the DPA suffers from often having narrowband performance which limits its capabilities in wideband and/or multi-standard microwave and radio frequency applications. In this thesis...
متن کاملThe Doherty Power Ampliier
The Doherty Power Amplifier (DPA) was invented in the far 1936 by W. H. Doherty, at the Bell Telephone Laboratories of Whippany, New Jersey (Doherty, 1936). It was the results of research activities devoted to find a solution to increase the efficiency of the first broadcasting transmitters, based on vacuum tubes. The latter, as it happens in current transistors, deliver maximum efficiency when...
متن کاملFrequency Reconfigurable and Linear Power Amplifiers Based on Doherty and Varactor Load Modulation Techniques
In future mobile communication networks, there will be a shift towards higher carrier frequencies and highly integrated multiple antenna systems. The system performance will largely depend on the available RF hardware. As such, RF power amplifiers (PAs) with improved efficiency, linearity, and bandwidth are needed. Dynamic load modulation (DLM) is one of the most common PA efficiency enhancemen...
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ژورنال
عنوان ژورنال: ELECTRONICS: Science, Technology, Business
سال: 2019
ISSN: 1992-4178
DOI: 10.22184/1992-4178.2019.184.3.144.152