In this paper we present the three-dimensional finite element time domain model of the human eye exposed to pulsed holmium: YAG laser radiation used in thermokeratoplasty procedure. The model is based on the Pennes' bioheat transfer equation and takes into account the focusing action of the lens. The absorption of laser energy inside the eye tissues is modeled using the Lambert-Beer's law. Model takes into account the pulse temporal profile. The maximum temperature values obtained from steady state and transient analysis are compared against those reported from other papers. Finally, sensitivity analysis of several parameters on the calculated temperature field is carried out.

In this paper, a three-dimensional (3-D) low-loss and wideband BPF based on lowtemperature co-fired ceramic (LTCC) has been presented for 60 GHz wireless communication applications. Via pads in the vertical via transitions are designed as an additional resonator for lowloss and wide-bandwidth of the BPF. The proposed BPF has been designed by investigating its characteristics as a function of dimensions of the resonators such as a single-mode patch and via pads and also a length of feed lines are optimized for effective coupling. The designed BPF was fabricated in a 6-layer LTCC dielectric. The fabricated BPF shows a centre frequency (fc) of 61.46 GHz and a 3dB bandwidth of 10.5% from 58.2 to 64.7 GHz (6.47 GHz). An insertion loss of -2.88 dB at fc and return losses below -10 dB are achieved. Its whole size is 4.72 × 1.7 × 0.684 mm³.