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We present an experimental demonstration of radio beamforming using an optical chip for application in K-band satellite communication. Via coherent combination of four RF channels, close to 12 dB beamforming gain is obtained. As a result, the transmission capacity is enhanced from 8-QAM, 5.81 Gbps to 32-QAM, 9.68 Gbps of multi-carrier data. For 4 channel beamforming, error-free performance (BER<1E-12)...
In this paper we present the design, realization, and experimental characterization of a photonic integrated true time delay circuit on a CMOS-compatible Si3N4 platform. The true time delay circuit consists of an optical side band filter for single side band modulation and an optical ring resonator for broadband time delay. Two methods of optical delay tuning are investigated: 1) optical wavelength...
We designed, fabricated and tested a compact AWG-based true-time delay chip for optically-assisted radio beamforming. Beam steering is performed remotely by only tuning the laser wavelength. We demonstrated beamforming of a 2.5-Gbps, 10 GHz signal with 2.7o/nm discrete-step beam steering.
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