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Millimetre-Wave Real-Time All-Digital Transmitter with Electro-Optical Upconversion

S. Pereira, S. ; Lorences-Riesgo, A. ; Dinis, DACD ; Oliveira, A. ; Vieira, J. ; Monteiro, P.

Millimetre-Wave Real-Time All-Digital Transmitter with Electro-Optical Upconversion, Proc International Conference on Transparent Optical Networks ICTON, Bucharest, Romania, Vol. , pp. - , July, 2018.

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Abstract
In this work, we demonstrate a real-time architecture for enabling the use of all-digital transmitters in mm-wave frequency bands. We propose the combination of delta-sigma modulation techniques and electro-optical upconversion stages to ease the stringent requirements in the design of RF front-ends. In our proof-of-concept demonstration, the real-time delta-sigma modulation technique is synthesised and prototyped into a field-programmable gate array (FPGA). Experimental results are reported in the range from 27 GHz up to 63 GHz and evaluated in terms of error-vector magnitude (EVM). The promising results demonstrate the scalability and flexibility of the proposed technique towards the design of highly-integrated and agile front-ends for next generation of communications.