Figure 1. Schematic of a Doherty PA Techniques such as Doherty amplifier structures extend high-efficiency device operation to lower power levels, allowing for significantly improved average PA ...
The Doherty amplifier—a modified Class B topology—has been in use for many years. It was developed by William H. Doherty of the renowned Bell Telephone Laboratories in 1936 to accommodate signals with ...
During broadcast radio’s first decade, little thought was given to transmitter efficiency. Main concerns of the industry were availability of broadcast spectrum (sound familiar?); keeping transmitter ...
The world's first fully integrated Doherty amplifiers for TD-SCDMA and WCDMA base stations has been launched by NXP Semiconductors to expand the company's portfolio of RF power transistors. The ...
Winchester, UK – NXP Semiconductors (Eindhoven, the Netherlands) is to extend the company's portfolio of RF power solutions by unveiling what it claims is the world's most efficient 3-way Doherty ...
CYPRESS, Calif., Jan. 09, 2018 (GLOBE NEWSWIRE) -- Mitsubishi Electric US, Inc. will present a hands-on mini lab showcasing its high-efficiency, wide-band GaN Doherty Amplifier at Radio Wireless Week ...
A novel phased-array beamformer for the 5G millimeter wave (mmWave) band has been recently developed. The innovative design applies two well-known techniques -- the Doherty amplifier and digital ...
SOUTHWICK, MASS.—Hitachi Kokusai Electric Comark LLC has a long standing history in the broadcast TV market. Comark started more than 40 years ago manufacturing RF components for UHF transmitters and ...
When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. At the 2012 NAB Show I saw three transmitters on display that promise solid-state amplifier ...
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