Practical method for the determination of time step in non-orthogonal FDTD

The Non-Orthogonal FDTD algorithm is well-suited to the modelling of curved structures, however users of the technique frequently have difficulty determining an appropriate time step for the algorithm. This contribution presents a new method which is shown to be both a practical and reliable technique for determining the time step

Metal boundary modelling for non-orthogonal FDTD

This contribution looks into a technique to reduce numerical errors when employing non-orthogonal mesh in modelling curved structures. A novel technique is analysed using microstrip line and a patch antenna and the results are presented

Wideband microstrip patch antenna design for breast cancer tumour detection

A patch antenna is presented which has been designed to radiate into human breast tissue. The antenna is shown by means of simulation and practical measurement to possess a wide input bandwidth, stable radiation patterns and a good front-to-back ratio. Consideration is also given to its ability to radiate a pulse, and in this respect it is also found to be suitable for the proposed application