A Digital LINC Transmitter Architecture for Opportunistic Radio

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Executive Summary

This paper describes a radio transmitter architecture based on the LINC concept. It associates a digital RF modulator with highly selective compact filters and saturated power amplifiers. Despite its apparent complexity, this mixed digital/analogue system guarantees both linearity and high power efficiency while offering increased flexibility, reconfigurability and compactness. As a result, this architecture appears as a relevant choice for future opportunistic radio developments. Opportunistic radio is a novel technology, which improves the spectrum utilization by seeking and opportunistically utilizing radio resources in time, frequency and space domains on a real time basis.

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