A multi-carrier base station receiver using a delta-sigma oversampling A/D converter

High dynamic range InP HBT delta-sigma analog-to-digital converters

“…A single DAC with subtraction at the input of the filter was found to achieve best noise performance. A one-to-four demultiplexer is included to simplify testing and permit direct interfacing with an FPGA for demonstration in receiver applications [4]. Versions with 0-7803-7447-9/02/$17.0002002 IEEE 279 second through sixth order lowpass and tenth order bandpass loop filters were developed.…”