TY - GEN
T1 - A power-management ASIC with Q-modulation capability for efficient inductive power transmission
AU - Kiani, Mehdi
AU - Lee, Byunghun
AU - Yeon, Pyungwoo
AU - Ghovanloo, Maysam
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/3/17
Y1 - 2015/3/17
N2 - A wide variety of applications can benefit from near-field wireless power transfer using coupled inductive links, such as wireless sensors and implantable microelectronic devices. The use of inductive power transmission is expected to see an explosive growth over the next decade as engineers try to cut the last cord from mobile electronics, small home appliances, and even electric vehicles [1]. The inductive link power transfer efficiency (PTE) is highly dependent of the loading of the receiver (Rx) coil, referred to as RL. As shown in Fig. 12.7.1a, magnetic resonance-based power transmission in the form of a 3-coil link has been proposed to maximize PTE for any given RL by transforming it to an optimal load, using k34 variable [2,3]. Alternatively, an off-chip matching circuit has been used to transform RL [4]. However, these methods need either an additional coil or a network of off-chip capacitors and inductors, which add to the size/cost of Rx. Moreover, in the above applications, RL can change drastically during operation and there is a need for Rx to dynamically compensate for a wide range of RL to maintain high PTE.
AB - A wide variety of applications can benefit from near-field wireless power transfer using coupled inductive links, such as wireless sensors and implantable microelectronic devices. The use of inductive power transmission is expected to see an explosive growth over the next decade as engineers try to cut the last cord from mobile electronics, small home appliances, and even electric vehicles [1]. The inductive link power transfer efficiency (PTE) is highly dependent of the loading of the receiver (Rx) coil, referred to as RL. As shown in Fig. 12.7.1a, magnetic resonance-based power transmission in the form of a 3-coil link has been proposed to maximize PTE for any given RL by transforming it to an optimal load, using k34 variable [2,3]. Alternatively, an off-chip matching circuit has been used to transform RL [4]. However, these methods need either an additional coil or a network of off-chip capacitors and inductors, which add to the size/cost of Rx. Moreover, in the above applications, RL can change drastically during operation and there is a need for Rx to dynamically compensate for a wide range of RL to maintain high PTE.
UR - http://www.scopus.com/inward/record.url?scp=84940777632&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84940777632&partnerID=8YFLogxK
U2 - 10.1109/ISSCC.2015.7063008
DO - 10.1109/ISSCC.2015.7063008
M3 - Conference contribution
AN - SCOPUS:84940777632
T3 - Digest of Technical Papers - IEEE International Solid-State Circuits Conference
SP - 226
EP - 227
BT - 2015 IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2015 62nd IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers
Y2 - 22 February 2015 through 26 February 2015
ER -