A 140-GHz FMCW TX/RX-Antenna-Sharing Transceiver With Low-Inherent-Loss Duplexing and Adaptive Self-Interference Cancellation

Chen, X; Yi, X; Khan, MIW; Li, X; Chen, W; Zhu, J; Yang, Y; Kolodziej, KE; Monroe, NM; Han, R

A 140-GHz FMCW TX/RX-Antenna-Sharing Transceiver With Low-Inherent-Loss Duplexing and Adaptive Self-Interference Cancellation

Chen, X Yi, X Khan, MIW Li, X Chen, W Zhu, J Yang, Y

Kolodziej, KE Monroe, NM Han, R

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Publisher:: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Publication Type:: Journal Article
Citation:: IEEE Journal of Solid-State Circuits, 2022, 57, (12), pp. 3631-3645
Issue Date:: 2022-12-01

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Full metadata record

Field	Value	Language
dc.contributor.author	Chen, X
dc.contributor.author	Yi, X
dc.contributor.author	Khan, MIW
dc.contributor.author	Li, X
dc.contributor.author	Chen, W
dc.contributor.author	Zhu, J
dc.contributor.author	Yang, Y https://orcid.org/0000-0001-7439-2156
dc.contributor.author	Kolodziej, KE
dc.contributor.author	Monroe, NM
dc.contributor.author	Han, R
dc.date.accessioned	2023-01-06T03:48:48Z
dc.date.available	2023-01-06T03:48:48Z
dc.date.issued	2022-12-01
dc.identifier.citation	IEEE Journal of Solid-State Circuits, 2022, 57, (12), pp. 3631-3645
dc.identifier.issn	0018-9200
dc.identifier.issn	1558-173X
dc.identifier.uri	http://hdl.handle.net/10453/164745
dc.description.abstract	This article presents a 140-GHz frequency-modulated continuous-wave (FMCW) radar transceiver featuring transmit/receive (TX/RX) antenna sharing that address a TX/RX beam misalignment problem when large-aperture lenses/mirrors/reflectarrays are used for pencil beam forming. A full-duplexing technique based on circular polarization and geometrical symmetry is applied to mitigate the 3 dB + 3 dB insertion loss inherent to conventionally adopted directional couplers, while still maintaining high TX-to-RX isolation. In addition, a self-adaptive self-interference cancellation (SIC) is implemented to suppress extra leakage due to antenna mismatch from a desired frontside radiation scheme. The TX/RX antenna sharing enables the pairing with a large 3-D printed planar lens and boosts the measured effective isotropic radiated power (EIRP) to 25.2 dBm. The measured total radiated power and minimum single-sideband noise figure (SSB NF) including antenna and duplexer losses are 6.2 dBm and 20.2 dB, respectively. The measured total TX-RX isolation is 33.3 dB under 14-GHz wide FMCW chirps. Based on a 65-nm complimentary metal-oxide-semiconductor (CMOS) technology, the chip has a die area of 3.1 mm2 and consumes 405 mW of dc power. Among all reported sub-THz transceivers with TX/RX antenna sharing, this work demonstrates the highest total radiated power and is the only work that has >30 dB of TX-RX isolation while mitigating the inherent 6 dB coupler loss.
dc.language	English
dc.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.relation.ispartof	IEEE Journal of Solid-State Circuits
dc.relation.isbasedon	10.1109/JSSC.2022.3202814
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0204 Condensed Matter Physics, 0906 Electrical and Electronic Engineering, 1099 Other Technology
dc.subject.classification	Electrical & Electronic Engineering
dc.title	A 140-GHz FMCW TX/RX-Antenna-Sharing Transceiver With Low-Inherent-Loss Duplexing and Adaptive Self-Interference Cancellation
dc.type	Journal Article
utslib.citation.volume	57
utslib.for	0204 Condensed Matter Physics
utslib.for	0906 Electrical and Electronic Engineering
utslib.for	1099 Other Technology
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2023-01-06T03:47:50Z
pubs.issue	12
pubs.publication-status	Published
pubs.volume	57
utslib.citation.issue	12

Abstract:

This article presents a 140-GHz frequency-modulated continuous-wave (FMCW) radar transceiver featuring transmit/receive (TX/RX) antenna sharing that address a TX/RX beam misalignment problem when large-aperture lenses/mirrors/reflectarrays are used for pencil beam forming. A full-duplexing technique based on circular polarization and geometrical symmetry is applied to mitigate the 3 dB + 3 dB insertion loss inherent to conventionally adopted directional couplers, while still maintaining high TX-to-RX isolation. In addition, a self-adaptive self-interference cancellation (SIC) is implemented to suppress extra leakage due to antenna mismatch from a desired frontside radiation scheme. The TX/RX antenna sharing enables the pairing with a large 3-D printed planar lens and boosts the measured effective isotropic radiated power (EIRP) to 25.2 dBm. The measured total radiated power and minimum single-sideband noise figure (SSB NF) including antenna and duplexer losses are 6.2 dBm and 20.2 dB, respectively. The measured total TX-RX isolation is 33.3 dB under 14-GHz wide FMCW chirps. Based on a 65-nm complimentary metal-oxide-semiconductor (CMOS) technology, the chip has a die area of 3.1 mm2 and consumes 405 mW of dc power. Among all reported sub-THz transceivers with TX/RX antenna sharing, this work demonstrates the highest total radiated power and is the only work that has >30 dB of TX-RX isolation while mitigating the inherent 6 dB coupler loss.

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http://hdl.handle.net/10453/164745