Dynamic Power Supply Design For High Efficiency Wireless Transmitters

Dynamic Power Supply Design for High-efficiency Wireless Transmitters

Dynamic Power Supply Transmitters

"Power is dissipated (lost) when this current flows through any resistance, which includes the amplifier's transistor. This dissipated power is the product of the current in the load times the voltage difference between the supply voltage to the amplifier and the output signal voltage. When the voltage supplied to the amplifier is a constant value, and by far the most common design practice, the situation in Fig. 1-2a results. Power dissipation in the amplifier is maximum when the output signal voltage is 1/2 of the supply voltage. When the output signal voltage is higher, even though the current value is larger the voltage drop is less and the power dissipation is lower. Similarly, when the output signal voltage is small, even though the voltage drop is now large the current in the load is smaller and again the power dissipation is lower"--

Analog Circuit Design

Analog Circuit Design is based on the yearly Advances in Analog Circuit Design workshop. The aim of the workshop is to bring together designers of advanced analogue and RF circuits for the purpose of studying and discussing new possibilities and future developments in this field. Selected topics for AACD 2007 are: (1) Sensors, Actuators and Power Drivers for the Automotive and Industrial Environment (Tue 27 March) - Chaired by Herman Casier, AMI Semiconductor Fellow, Belgium; (2) Integrated PA's from Wireline to RF (Wed 28 March) - Chaired by Prof. Michiel Steyaert, Catholic University, Leuven; (3) Very High Frequency Front Ends (Thu 29 March) - Chaired by Prof. Arthur van Roermund, Eindhoven University of Technology.