The finite-difference time-domain (FDTD) method is a widespread numerical tool for full-
wave analysis of electromagnetic fields in complex media and for detailed geometries …

This paper presents a computational nanophotonic design library for gradient-based
optimization called the Stanford Photonic INverse design Software (SPINS). Borrowing the …

We introduce an approach to carry out layout optimization of metallic antenna parts. An
optimization technique first developed for the optimization of load-bearing elastic structures …

Differentiable models enable the efficient computation of parameter gradients for continuous
functions, greatly expediting the optimization of high-dimensional systems. This makes them …

We present an approach to design from scratch planar microwave antennas for the purpose
of ultra-wideband (UWB) near-field sensing. Up to about 120 000 design variables …

Dielectric resonator antennas (DRAs) are a relatively new class of antenna that utilizes the
radiation phenomena of dielectric resonators in open space. Since mainly analytical …

Inverse design has greatly expanded photonic devices for achieving optimized performance.
However, the use of inverse design for plasmonic structures has been challenging due to …

The authors present a new approach for evolutionary antenna design. Through exploiting
efficient adjoint sensitivity analysis techniques, the antenna structure evolves to better satisfy …

We briefly review the current state of the art of microwave CAD technologies. We look into
the history of design optimization and CAD‐oriented modeling of microwave circuits as well …

Numerical optimization of photonic devices is often limited by a large design space the finite-
differences gradient method requires as many electric field computations as there are …