A 0.46-THz 25-Element Scalable and Wideband Radiator Array With Optimized Lens Integration in 65-nm CMOS
In: IEEE Journal of Solid-State Circuits, Jg. 55 (2020-09-01), S. 2387-2400
Online
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Zugriff:
In this article, we present a 438–479-GHz fully integrated 25-element radiator array source based on a scalable structure of coupled standing wave oscillator cells without extra loss and parasitics from coupling networks. The bandwidth is extended using a varactor-less frequency tuning method, and EIRP is improved by increasing the size of the array using the proposed scalable coupling method and maximizing the radiation directivity using a silicon lens in an optimized radiation setup. An analysis of the radiation directivity of a chip-lens setup is presented as well as the employed approach for enhancing EIRP by maximizing the directivity. The circuit is implemented in a 65-nm CMOS process and is measured to have 40.7 GHz/8.9% frequency tuning range. The chip consumes 0.38–2.34-W power (1.18 W at 459-GHz center frequency) from a 1.2-V supply voltage. The circuit provides a maximum of −1.8-dBm radiated power and 19.3-dBm EIRP at 448 GHz using a 12.5-mm radius silicon lens. The minimum measured phase noise at 10-MHz offset is −100.6 dBc/Hz. To the best of our knowledge, this article has the largest EIRP, radiated power, and bandwidth among fully integrated silicon-based coherent sources above 350 GHz.
Titel: |
A 0.46-THz 25-Element Scalable and Wideband Radiator Array With Optimized Lens Integration in 65-nm CMOS
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Autor/in / Beteiligte Person: | Momeni, Omeed ; Jalili, Hossein |
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Zeitschrift: | IEEE Journal of Solid-State Circuits, Jg. 55 (2020-09-01), S. 2387-2400 |
Veröffentlichung: | Institute of Electrical and Electronics Engineers (IEEE), 2020 |
Medientyp: | unknown |
ISSN: | 1558-173X (print) ; 0018-9200 (print) |
DOI: | 10.1109/jssc.2020.2989897 |
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