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Photonic mixers for wide bandwidth RF receiver applications

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3 Author(s)
A. C. Lindsay ; Div. of Electron. Warfare, Defence Sci. & Technol. Organ., Salisbury, SA, Australia ; G. A. Knight ; S. T. Winnall

Optoelectronic mixers can exhibit a very wide bandwidth of operation with significantly reduced third-order intermodulation products. A 20 GHz bandwidth optoelectronic mixer has been constructed and characterized. The third-order intermodulation terms were demonstrated to be more than 70 dB below the IF output. The mixer was then incorporated into a simple superheterodyne receiver architecture, which was shown to have a tangential sensitivity of -66 dBm and a compressive dynamic range of 44 dB. System limitations and possible improvements are discussed

Published in:

IEEE Transactions on Microwave Theory and Techniques  (Volume:43 ,  Issue: 9 )