TY - GEN
T1 - A 12.5-Gb/s Fresnel Zone Coupled Fully Rotatable 60-GHz Contactless Connector in 65-nm CMOS Process
AU - Zaheri, Hossein
AU - Wargacki, Walter
AU - Romero, Caleb
AU - Kim, Yanghyo
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - This work presents a 60-GHz contactless connector that can fully rotate without physical contact. Conventional connectors suffer poor mechanical reliability, maneuverability, and signal integrity when handling moving or rotating parts, such as in robotic arms, often becoming bottlenecks in high-precision autonomous systems. Our implemented system consists of a 60-GHz CMOS transmitter (Tx), receiver (Rx), and compact antenna to enable fully rotatable and energy-efficient contactless connector solutions. Two folded-dipole antennas communicate in a radiative Fresnel zone, where both longitudinal and transversal electromagnetic fields propagate simultaneously. We exploit the longitudinal electric field component to de-sensitize the polarization mismatch over the entire rotational angle. In addition, we employ an automatic gain control (AGC) loop and offset canceling amplifiers to compensate for the transmission characteristic degradation and signal imbalance when connectors rotate. The demonstrated system consumes 56 mW of power under a 1-V supply while transferring 12.5-Gb/s of data rate, achieving 4.5-pJ/bit energy efficiency.
AB - This work presents a 60-GHz contactless connector that can fully rotate without physical contact. Conventional connectors suffer poor mechanical reliability, maneuverability, and signal integrity when handling moving or rotating parts, such as in robotic arms, often becoming bottlenecks in high-precision autonomous systems. Our implemented system consists of a 60-GHz CMOS transmitter (Tx), receiver (Rx), and compact antenna to enable fully rotatable and energy-efficient contactless connector solutions. Two folded-dipole antennas communicate in a radiative Fresnel zone, where both longitudinal and transversal electromagnetic fields propagate simultaneously. We exploit the longitudinal electric field component to de-sensitize the polarization mismatch over the entire rotational angle. In addition, we employ an automatic gain control (AGC) loop and offset canceling amplifiers to compensate for the transmission characteristic degradation and signal imbalance when connectors rotate. The demonstrated system consumes 56 mW of power under a 1-V supply while transferring 12.5-Gb/s of data rate, achieving 4.5-pJ/bit energy efficiency.
KW - CMOS
KW - Contactless Connector
KW - Millimeter-Wave
KW - Non-Coherent Detection
KW - OOK Modulation
KW - Radiative Fresnel Zone
KW - Rotational Connector
UR - http://www.scopus.com/inward/record.url?scp=85168550906&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85168550906&partnerID=8YFLogxK
U2 - 10.1109/IMS37964.2023.10187978
DO - 10.1109/IMS37964.2023.10187978
M3 - Conference contribution
AN - SCOPUS:85168550906
T3 - IEEE MTT-S International Microwave Symposium Digest
SP - 113
EP - 116
BT - 2023 IEEE/MTT-S International Microwave Symposium, IMS 2023
T2 - 2023 IEEE/MTT-S International Microwave Symposium, IMS 2023
Y2 - 11 June 2023 through 16 June 2023
ER -