@CHAPTER{ iet:/content/books/10.1049/sbew525e_ch2, keywords = {microwave devices;finite-difference time-domain method;antenna design;Maxwell equations;FDTD;time-domain differential equation approach;boundary conditions;computational electromagnetics;radar target scattering cross-section;CEM methods;electromagnetic problems;}, title = {Introduction to FDTD}, booktitle = Adjoint Sensitivity Analysis of High Frequency Structures with MATLABĀ®, publisher = {Institution of Engineering and Technology}, year = {2017}, pages = {27-48}, series = {Electromagnetic Waves}, doi = {10.1049/SBEW525E_ch2}, url = {https://digital-library.theiet.org/;jsessionid=385zs7xqbmdr.x-iet-live-01content/books/10.1049/sbew525e_ch2} }