Digitally-Modulated OOK Reconfigurable Intelligent Surfaces for Massively-Scalable Gbps Transmitters

We present single-layer, direct digitally modulated, reconfigurable intelligent surface (RIS) unit-cell (UC) designs at 12GHz. These UCs find application in low-power, gigabits per second (Gbps) ON-OFF Keying (OOK) modulators where each UC of the surface can be individually programmed using Gbps gen...

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Bibliographic Details
Published in:	2024 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM) pp. 366 - 367
Main Authors:	Sharma, Himanshu, Meng, Xiangbo, Laneman, J Nicholas, Bendlin, Ralf, Hochwald, Bertrand, Chisum, Jonathan
Format:	Conference Proceeding
Language:	English
Published:	USNC-URSI 09-01-2024
Subjects:	Modulation Radio transmitters Reconfigurable intelligent surfaces Voltage
Online Access:	Get full text
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Summary:	We present single-layer, direct digitally modulated, reconfigurable intelligent surface (RIS) unit-cell (UC) designs at 12GHz. These UCs find application in low-power, gigabits per second (Gbps) ON-OFF Keying (OOK) modulators where each UC of the surface can be individually programmed using Gbps general purpose input-output (GPIO) lines. The key challenge is to realize a large shift in response from a small voltage change (the direct digital drive). We propose that transmission efficiency \eta_{T} should be maximized and modulation depth m should be greater than 20 dB.
DOI:	10.23919/USNC-URSINRSM60317.2024.10464479