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• W4214757579 abstract "This article presents a 150-GHz regenerative low-power miniature two-way radio integrated with on-chip antennas. The low-power radio is based on a reconfigurable fundamental oscillator array that can be used as a sub-terahertz (THz) source in the transmitter (Tx) mode and a sub-THz super-regenerative detector in the receiver (Rx) mode supporting ON–OFF keying (OOK) modulation. The oscillators are coupled through a low-loss integrated Marchand balun-based coupling network that guarantees far-field constructive interference at the Rx side. A 2 <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$times $ </tex-math></inline-formula> 2 on-chip patch antenna array is designed with a new adaptive metal-fill placement methodology that largely reduces antenna losses and off-tuning present in sub-THz/THz frequency antenna designs without the need for bulky silicon lenses. Our proof-of-concept prototype achieves a maximum EIRP of 8.52 dBm at a frequency of 149 GHz, an Rx sensitivity of −70 dBm, and a dc-to-EIRP efficiency of 30.7% with no silicon lens, which is the highest efficiency reported of all the silicon-based sub-THz transceivers (TRxs) in the 150-GHz range. The moderate 2 <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$times $ </tex-math></inline-formula> 2 array size with no silicon lens offers a large field of view (FoV) of ±40°, which eases node finding and link establishment in deployment. Our miniature low-power radio prototype consumes 11.6 mW in the Tx mode and 10 mW in the Rx mode after duty cycling. Wireless peer-to-peer network measurements with OOK modulation using a 10-Mb/s data rate demonstrate a chip-to-chip communication distance of 70 cm and BER <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$le $ </tex-math></inline-formula> 10 <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$^{-5}$ </tex-math></inline-formula> at/above −55-dBm received power and a BER of 6 <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$times $ </tex-math></inline-formula> 10 <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$^{-3}$ </tex-math></inline-formula> at −70-dBm received power. The prototype chip was designed using the GlobalFoundries 45-nm silicon-on-insulator (SOI) process, and it occupies a total chip area of 2.1 mm <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$times $ </tex-math></inline-formula> 2.1 mm, including the antenna array, making it particularly apt for ultra-miniaturized, high-security, and stealth Internet-of-Things (IoT) nodes for intelligent edge networks and wearable devices." @default.
• W4214757579 created "2022-03-02" @default.
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• W4214757579 date "2022-07-01" @default.
• W4214757579 modified "2023-10-14" @default.
• W4214757579 title "A 150 GHz Lens-Free Large FoV Regenerative 2 × 2 Transceiver Array With 31% DC-to-EIRP Efficiency and −70 dBm Sensitivity for a 70 cm Bidirectional Peer-to-Peer Link" @default.
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• W4214757579 doi "https://doi.org/10.1109/jssc.2022.3149526" @default.
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