Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"LDMOS"”.
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Thermal characterization and modeling of LDMOS FETs
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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Large-signal modeling of bulk and SOI RF power LDMOS FETs
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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Modeling And Optimization Of Body Diode Reverse Recovery Characteristics Of Ldmos Transistors
… reduce or if possible eliminate them. A new 30V LDMOS device has been created and is being implemented into a synchronous buck converter for future DC-DC conversions. This new lateral device has a Figure of Merit of 80mÙ*nC, representing a 50% reduction from the conventional trench MOSFET. …
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Digitally-assisted, efficiency enhanced, linear RF power amplifier architectures
… are used to boost the efficiency of a dual-input LDMOS Doherty PA of 500W peak power. It is shown that the improved phase adjustment and the waveform conditioning for the Auxiliary PA, results in ~ 4% improvement in the efficiency of the Doherty PA. This efficiency improvement comes at the cost of …
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LATERAL POWER DEVICES AND TECHNOLOGIES FOR HIGH VOLTAGE INTEGRATED CIRCUITS
… Area (SOA). A Lateral Double-diffused MOSI’ET (LDMOS) in a novel SOI technology based on alternative high-k dielectrics a.s buried insulators is investigated using numerical simulations. Since the drift region doping is directly proportional to the value of buried insulator's dielectric …
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Development of pulsed power sources using self-sustaining nonlinear transmission lines and high-voltage solid-state switches
… laterally-diffused metal-oxide-semiconductor (LDMOS) devices to produce self-sustaining oscillations from a single input pulse. To date, this research work is one-of-a-kind in the field of NLTLs used for generating medium-power RF signals. Multiple NLTLs have been fabricated to identify the …
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Design of miniaturized radio-frequency DC-DC power converters
… expensive RF Lateral, Double-Diffused MOSFETs (LDMOSFET). We show that through a combination of layout optimization and safe operating area (SOA) extension integrated devices can achieve near-parity performance to their purpose-built RF discrete cousins over the desired operating regime. A …
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Gallium nitride high electron mobility transistors in chip scale packaging: evaluation of performance in radio frequency power amplifiers and thermomechanical reliability characterization
… with many targeted as replacements for 50 V Si LDMOS as used in cellular infrastructure and industrial, scientific, and medical (ISM) applications between 1 MHz and 1 GHz. Fortunately within the past five years, devices have become commercially available with attractive key specifications: GaN …
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Efficiency Improvement of WCDMA Base Station Transmitters using Class-F power amplifiers
… laterally diffused metal oxide semiconductor (LDMOS) transistor. The choice of bias points and the design of the harmonic traps are very critical for the Class-F performance and hence were designed after careful consideration. The designs were simulated on Agilent's Advanced Design System (ADS) …
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Efficiency 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 …
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Analytical Modeling and Design of High-Efficiency Input-Output Harmonic Tuned Microwave Power Amplifiers
High efficiency power amplifier (PA) is an integral part of an efficient radio frequency (RF) transmitting system design. To enable modern and future wireless communication systems, the quest for efficient, wideband, and linear PA design techniques is ongoing. To cope with the stringent and …