In this contribution, We analyze the bandwidth versus accuracy trade-offs of conventional two-step de-embedding approaches, often employed to extract the device model parameters. The accuracy limitation of incorporating the pad/line section of classical DUT test-fixtures into shunt-series complex and frequency-dependent elements is analyzed by means of linear circuit simulations and EM parametric analysis. The de-embedding accuracy is then evaluated by employing 3D surfaces to include both the frequency and the geometrical dependency. To validate the presented analysis, classical device monitoring parameters are extracted versus frequency for the same nMOS device embedded in two different fixtures. One topology only supports pad level calibration, thus including the fixture pad/line section in the de-embedding process. The second topology allows a direct on-Wafer calibration (reference plane set on metal-1 in close proximity to the DUT) thus minimizing the residual parasitics to be removed by the de-embedding step. Experimental data are then presented and compared to simulation test benches to highlight the improved consistency of the extracted model parameters of the metal-1 calibration approach up to 220GHz.@en

Factors, such as split incentive, information asymmetry, opportunistic behavior, ill-informed users, and institutional transitions, etc., incur different levels of Transaction costs (TCs) and affect the stakeholders’ willingness to take part in building energy efficiency (BEE). A better understanding of the nature and structure of TCs is essential to improve the market mechanisms for BEE investment. It covers three dimensions of TCs: specific investment, frequency and uncertainty. The paper provides a framework to understand BEE barriers in general and the TCs concerns of stakeholders in particular. In-depth interviews questions are designed to be conducted with the real estate representatives and architects, using a case of Hong Kong, where real estate developers are chosen to be the study object as they are the initiative and dominate force. The study focuses on how to smooth BEE transactions and lessen TCs involved. It indicates that TCs are the key factors impeding BEE market penetration, and will provide references to design a governance structure as well as to design policy packages to promote BEE.@en