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This paper presents an innovative architecture of photonics-based RF scanning receiver that exploits a digital feedforward noise cancellation method for removing the beat noise between the lasers used in the scheme, instead of a complex laser locking mechanism as in a previous implementation. Moreover, compared with conventional channelized implementations, it reaches wide operating frequency range...
A demonstrator of DC offset-free direct conversion receiver is presented. The innovative architecture exploits optical domain up-conversion and photonic I/Q demodulation to perform a wideband scanning of the RF input spectrum avoiding bulky multiple crystal oscillators and bandpass filters. Moreover, the scheme provides a total immunity to local oscillator self-mixing and to RF-to-baseband feedthrough...
We present the design and simulative results of an innovative RF receiver based on photonic techniques that quickly scans the RF band of interest in warfare applications, avoiding the spectrum channelization and thus reducing the receiver SWaP. The scheme is based on a stable mode-locked laser and a specifically designed tunable optical filter, and it simultaneously samples, filters, and down-converts...
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