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A channel-selective super regenerative receiver (SRR) system is proposed with improved channel selectivity. The proposed SRR system operates only at a valid incoming signal due to the RF spectrum sensing functionality. To overcome the rough channel selectivity of the SRR, a systemic methodology is proposed for controlling quenching signal waveforms. From the experimental evaluations, the proposed...
We demonstrate a simplified Brillouin optical time-domain analysis system based on direct current modulation of a laser diode which is configured and optimized for long-range measurement. A precompensated low-frequency RF wave is applied for time-division generation of Brillouin pump and probe waves without using any microwave device. Low-speed frequency dithering of the laser diode is additionally...
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