Clarissa Cyrilla Prawoto

Influence of fin-width lateral variations of a FinFET

We have presented that, in terms of subthreshold operation, IOFF, SS and DIBL are improved in response to higher degree of lateral thickness non-uniformity. We have shown that the linearly varying film thickness of a FinFET introduces effects comparable to small variations in overall thickness. To address the non-uniformity, a correction factor for the overall thickness based on IOFF could be employed. Due to its non-trivial effects, this thickness variation angle should be considered as a parameter in FinFET modeling in order to capture a more accurate behavior, instead of only taking the average thickness.

A design methodology of efficient on-chip wireless power transmission

Due to lack of any design methodology, on-chip wireless power transmission (WPT) systems often fall short to its off-chip counterpart in terms of power efficiency. In this paper, a design methodology was established by explaining the fundamental trade-offs between geometric and electrical parameters of WPT systems. The transmitter and receiver dimensions, available source power, and the operating frequency were considered as the major design constraints. Behavioral trends due to these constraints were rigorously investigated utilizing a scalable WPT model along with the experimental results. Eventually, a strategy was provided to achieve the most efficient power transmission operating within the constraints.

Modeling of on-chip wireless power transmission system (invited paper)

This paper presents a complete model of an on-chip wireless power transmission (WPT) system, which is essential to design a WPT link that can operate at maximum power efficiency within the design constraint of a particular application. In the process of WPT modeling, a unified model of planar inductor was proposed, which captured both PCB and on-chip inductor characteristics. Also, the mutual inductance model between two planar coils was proposed to estimate the energy coupling between the transmitter and receiver. All these models are based on the geometric parameters of the WPT system. An on-chip WPT link was implemented, and the key parameters were characterized and compared with the calculated results to confirm the accuracy of the model.