Results 101 to 110 of about 5,033,045 (217)
Design of a tri-band single-loop load-modulated Doherty power amplifier
Engineering Science and Technology, an International JournalThis article presents a novel tri-band Doherty power amplifier (DPA) architecture based on a single-loop L-C load modulation network. By introducing additional current and power combining nodes, this architecture enhances the degrees of freedom and ...
Yuzhe Fu +5 more
doaj +1 more source
A 38-46-GHz MMIC Doherty power amplifier using post-distortion linearization
, 2013 [[abstract]]This letter describes the first demonstration of a fully integrated Doherty power amplifier (PA) monolithic microwave integrated circuit (MMIC) with post-distortion linearization at millimeter-wave (MMW) frequency band.
Jeng-Han Tsai;Tian-Wei Huang
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Analysis of Average Power Tracking Doherty Power Amplifier
, 2017 An average power tracking (APT) Doherty power amplifier (PA) is analyzed in terms of its biasing voltage condition, efficiency, and output power. And the drain and gate bias voltages are optimized for operation at different output power conditions.
Lee, J, Kim, S, Minn, D, Kim, B, Park, Y
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Output Bandwidth Limitations of Basestation Power Amplifier Design and Its Implementation Using Doherty Amplifier [PDF]
, 2014 : This thesis is a study of Bandwidth limitation of basestation power amplifier and its Doherty application. Fundamentally, bandwidth of a power amplifier (PA) is limited by both its input and output prematch networks and its Doherty architecture ...
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A New Doherty Amplifier Design Approach
, 2010 The conventional Doherty amplifier requires the auxiliary device current to increase faster than the main as the input power increases. This has been accomplished by additional control circuitry, or uneven power drive, or periphery scaling.
Uma Balaji +3 more
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Linear Doherty power amplifier design based on adaptive input signal power control
Engineering Science and Technology, an International JournalIn modern wireless communication systems, the trade-off between efficiency and linearity in Doherty power amplifiers (DPAs) remains a critical challenge.
Zhiqing Liu, Ye Zhong, Zhijiang Dai
doaj +1 more source
Historical Aspect of Load-Modulated Balanced Amplifiers
IEEE AccessThis paper provides a comprehensive overview of the challenges and considerations associated with the design, implementation, and optimization of Load Modulated Balanced Amplifiers (LMBAs).
Akram Sheikhi
doaj +1 more source
A Compact Output Power Combiner for Broadband Doherty Power Amplifiers
, 2019 A novel compact output power combiner for broadband Doherty Power Amplifiers is proposed in this paper. The proposed output power combiner avoids the use of quarter-wave impedance transformers as they are sizable and work over narrow bandwidths. Instead,
Mona Zaghloul, Ali Darwish, Ken McKnight
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A base control Doherty power amplifier design for improved efficiency in GSM handsets
In cellular telephones, RF power amplifiers consume a significant part of the total phone current. Reducing the average PA current will extend battery life.
Ferwalt, Darren W.
core +2 more sources
IEEE AccessThis study proposes a novel dual input power amplifier (PA) with a frequency-periodic load modulated output matching network supported by a broadband biasing network.
Takuma Torii +3 more
doaj +1 more source