A High-Efficiency 100-W GaN Three-Way Doherty Amplifier for Base-Station Applications
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چکیده
منابع مشابه
High-Efficient Three-Way Doherty Amplifier with Improved Linearity
– In this paper the operation behavior of three-way Doherty amplifier is analyzed, including the efficiency and linearity. Amplifier is designed in the configuration with two quarter-wave impedance transformers in the output combining circuit with LDMOSFETs in carrier and peaking amplifies. The signals for linearization (the fundamental signals’ second harmonics-IM2 and fourth-order nonlinear s...
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A single stage wideband amplifier based on an AlGaN/GaN HEMT power cell with a total gate-width of 16 mm matched to 50 Ohm has been successfully developed and characterized by use of a single-carrier W-CDMA signal. A very wide bandwidth of more than 1.7 GHz covering several mobile radio frequency bands within Land S-band with peak output power levels up to 44 dBm has been demonstrated with meet...
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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...
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approved: Andreas Weisshaar In cellular telephones, RF power amplifiers consume a significant part of the total phone current. Reducing the average PA current will extend battery life. In GSM systems the handset is commanded by the base station to transmit at power levels lower than full power much of the time. A Doherty amplifier can be used to improve efficiency at these lower power levels, p...
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ژورنال
عنوان ژورنال: IEEE Transactions on Microwave Theory and Techniques
سال: 2008
ISSN: 0018-9480,1557-9670
DOI: 10.1109/tmtt.2008.924364