Timothy D. Drysdale

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—Line edge roughness (LER) in end-of-the-roadmap integrated circuit interconnects causes variability in their resistance R, capacitance C and hence also their RC delay. We present an analysis of LER-induced variability of resistance, capacitance and delay of short-range interconnects within standard cells at the 32, 22 and 18 nm technology nodes using both(More)
We report the experimental in situ characterization of 30-40 MHz and 868 MHz wireless transmission schemes for ingestible capsules, in porcine carcasses. This includes a detailed study of the performance of a magnetically coupled near-field very high-frequency (VHF) transmission scheme that requires only one eighth of the volume and one quarter of the power(More)
End of the roadmap integrated circuit interconnects suffer from capacitance variability due to line edge roughness (LER), significantly impacting overall circuit performance. We forecast the capacitance variability of short range interconnects with realistic line edge roughness at the upcoming 45, 32, and 22 nm technology nodes using a fast TCAD capacitance(More)
Superconducting nanowire single photon detectors are rapidly emerging as a key infrared photon-counting technology. Two front-side-coupled silver dipole nanoantennas, simulated to have resonances at 1480 and 1525 nm, were fabricated in a two-step process. An enhancement of 50 to 130% in the system detection efficiency was observed when illuminating the(More)
Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online's data policy on reuse of materials please consult the policies page. We demonstrate that diode-switching can be used to introduce frequency agility into antennas produced by thermal(More)
Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online's data policy on reuse of materials please consult the policies page. Abstract: We present a new approach to designing V-band Bull's eye antenna so as to produce multiple beams, which are(More)
— We provide an overview of our work to date on the parallelization of implicit time domain methods, in particular the alternating direction implicit finite-difference time-domain method (ADI-FDTD). First we describe a domain decomposition scheme for parallel ADI-FDTD in three dimensions that is suitable for implementation on widely available high(More)
We present effective medium approximation (EMA) that provides an homogeneous equivalent for the top layer of on-chip interconnects in an integrated circuit. An empirical mixing model for straightforward and fast extraction of the effective dielectric constant of a slab of integrated circuit wiring and its analytical formulation based on Maxwell-Garnett rule(More)