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Thales Alenia Space is a company producing electronic equipment for space vehicles. In regards to the cost of space programs, the reliability is a main concern. Thus, their products are intensively tested to ensure the long-term performance. Thales Alenia Space is a reference producer of power supply for Traveling-Wave Tube Amplifier (TWTA). The TWTA are used in telecommunication to amplify Radio Frequency (RF) electro-magnetic waves. The power supply is tested with a dynamic load made of several collector loads. These collector loads are specially designed to simulate electrically the behaviour of the TWTA. The goal of this master thesis is to design a collector of the TWTA dynamic load. The collector load acts as a variable current source. Several challenges appear in the design of such a device. The collector load combines high voltage input and power dissipation while a good accuracy in the load current is required. In order to achieve a collector load that simulates accurately the TWTA, this work starts with the derivation of the specification from the TWTA behaviour. Then, the loading circuit which sinks the current and manages the voltage is studied. A control feedback circuit is designed to regulate the current in the loading circuit. High voltage isolation is considered to ensure safety while providing power dissipation. In this work, a prototype was built to verify the collector load design. Several tests were performed including the current accuracy, control bandwidth and other technical considerations. Finally, the results and improvements are discussed.
TWTA --- Active load --- TWT --- Lead-lag compensation --- analog controller --- High voltage --- current source --- High voltage insulation --- Power MOSFET --- Electro-thermal Instability --- Ingénierie, informatique & technologie > Ingénierie électrique & électronique
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thyristoren --- aandrijftechniek --- Electronics --- spanningsstabiliteit --- transistoren --- gelijkrichters --- motoren --- Electronique --- Elektronica --- Vermogenselektronica --- diode --- gelijkrichter --- vermogenselektronica --- halfgeleider sensor --- bipolaire transistor --- mosfet --- draaistroommotor --- elektrische aandrijving --- dc motor --- (zie ook: driefasemotor) --- convertor --- thyristor --- triode --- Vermogenselektronica.
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FET (field-effect transistor) --- Electronics --- transistoren --- Vermogenselektronica --- MOSFET --- MOSPOWER --- applications --- Metal oxide semiconductor field-effect transistors --- Power transistors --- Field-effect transistors --- Metal oxide semiconductors --- Junction transistors --- Power electronics --- Power semiconductors --- Transistors --- Handbooks, manuals, etc
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Diodes, Semiconductor --- Semiconductors --- Transistors --- elektronica --- technologie --- halfgeleiders --- diodes --- transistors --- MOSFET --- FET --- lasers --- Electronics --- Crystalline semiconductors --- Semi-conductors --- Semiconducting materials --- Semiconductor devices --- Crystals --- Electrical engineering --- Solid state electronics --- Crystal diodes --- Diodes, Crystal --- Semiconductor diodes --- Materials --- Diodes, Semiconductor. --- Semiconductors. --- Transistors. --- Diodes, semiconductors
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Metal oxide semiconductors --- -Metal oxide semiconductor field-effect transistors --- MOSFET --- Field-effect transistors --- Unipolar transistors --- Semiconductors --- Transistors --- Charge coupled devices --- Mathematical models --- Metal oxide semiconductor field-effect transistors --- Mathematical models.
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This modern treatise on compact models for circuit computer-aided design (CAD) presents industry standard models for bipolar-junction transistors (BJTs), metal-oxide-semiconductor (MOS) field-effect-transistors (FETs), FinFETs, and tunnel field-effect transistors (TFETs), along with statistical MOS models. Featuring exercise problems at the end of each chapter and extensive references at the end of the book, the text supplies fundamental and practical knowledge necessary for efficient integrated circuit (IC) design using nanoscale devices. It ensures even those unfamiliar with semiconductor physics gain a solid grasp of compact modeling concepts.
Integrated circuits --- Chips (Electronics) --- Circuits, Integrated --- Computer chips --- Microchips --- Electronic circuits --- Microelectronics --- Mathematical models. --- Computer-aided design. --- Engineering --- Electrical Engineering --- computer-aided design --- CAD --- compact modeling --- MOSFET --- Circuit Simulation --- compact models --- SPICE model
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* Associated Web site (cmosedu.com) provides examples, solutions, and SPICE simulation netlists
Integrated circuits --- Metal oxide semiconductor field-effect transistors. --- Metal oxide semiconductors, Complementary --- Design and construction. --- Metal oxide semiconductor field-effect transistors --- MOSFET --- Field-effect transistors --- Metal oxide semiconductors --- Design and construction
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The steady downscaling of device-feature size combined with a rapid increase in circuit complexity as well as the introduction of new device concepts based on non-silicon-material systems poses great challenges for device and circuit designers. One of the major tasks is the development of new and improved device models needed for accurate device and circuit design. Another task is the development of new circuit-simulation tools to handle very large and complex circuits. This book addresses both these issues with up-to-date reviews written by leading experts in the field.The first three chapter
Metal oxide semiconductor field-effect transistors --- Silicon-on-insulator technology --- SOI devices --- Electric insulators and insulation --- Semiconductors --- MOSFET --- Field-effect transistors --- Metal oxide semiconductors --- Computer simulation. --- SPICE (Computer file) --- Simulation program with integrated circuit emphasis