Highly Linear Microwave Signal Detection for Cognitive Radio

Conference: GeMiC 2014 - German Microwave Conference
03/10/2014 - 03/12/2014 at Aachen, Germany

Proceedings: ITG-Fb. 246: GeMiC 2014

Pages: 4Language: englishTyp: PDF

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Chatterjee, Debalina; Blau, Kurt; Hein, Matthias A. (RF and Microwave Research Laboratory, Ilmenau University of Technology, Ilmenau, Germany)

This paper presents a highly linear sensing approach to detect arbitrarily modulated input signals with respect to identifying the spectrum holes available for cognitive radio applications. The sensing technique is based on a completely passive six-port circuit, to process the sensed signal without requiring active, hence non-linear components (e.g., mixers) in the front-end of the receiver circuit. Such a technique provides a fast, low-power sensing strategy along with minimal non-linear distortion of the resultant receiver signal. It offers, therefore, an extremely interesting alternative to rapid wide-band sensing which is a key pre-requisite for any cognitive radio system.