Programmable, frequency agile direct conversion digital receiver with high speed oversampling

摘要

The invention described herein is directed to different embodiments of a wireless communications device that can be used in many different applications, such as but not limited to a digital oversampling receiver adapted to select desired signals and to reject undesired signals. In one embodiment, a wireless communications device is disclosed that comprises an architecture for a receiver front end that obviates the need for high order passive circuitry or RC active circuitry to select desired signals and to reject undesired signals.

主权项

1. A method of receiving a wireless transmission comprising the steps of:
programming a count pattern into an N stage ring counter, wherein N is an integer of value greater than one; producing an N-cycle digital waveform; combining said N-cycle digital waveform with said wireless transmission; oversampling said combined digital waveform and said wireless transmission to form a high speed serial stream, said high speed serial stream comprised of a signal of interest and a quantization noise signal; suppressing said quantization noise signal; and converting said high speed data stream into a lower speed.