Geo-tagging two International Flights on April 24, 2010

Istanbul - Amsterdam flight

Amsterdam - Portland, Oregon flight

GPS Tracking of two consecutive international flights by Sony GPS-CS3. The first flight is from Istanbul to Amsterdam via KLM on April 24, 2010 and the second one is from Amsterdam to Portland, Oregon on the same day via Delta Airlines. As long as the GPS unit is close to the window, it is possible to receive sufficient GPS signals (mostly two bars). However, there are intermittent loss of GPS tracking without any apparent reasons. Also, battery life is a concern for long flights as changing batteries dramatically affects the re-connection to the GPS signals while on the move. I recommend to get connected to the GPS satellites before or during taxiing as well as utilizing a long-life battery.

For another posting on geo-logging, please check the following link:
Sony GPS-CS3KA Review (Geo-tagging) and Performance in the Airplane

Power Divider Waveguides using Periodic Band Gap Structure - FDTD Simulation

This is the third of the series for the waveguiding structures using the periodic band gap materials (The first one is at: http://www.youtube.com/watch?v=gZkFVco4kL4).

In this video, a power divider made out of periodic boundary conditions is demonstrated. The frequency of operation is 11.085 GHz. The relative dielectric permittivity of the square blocks are 11.56 and the ambient medium is air. Each block is 3.5 mm x 3.5 mm.

Originally, this was inspired by the following video:
http://www.youtube.com/watch?v=O-6l0bvAda0

The main reference is the below dissertation:
Marcelo Bruno Dias, "Estudo da Propagação de Ondas Eletromagnéticas em Estruturas Periódicas". Graduation Dissertation - Electrical Engineering Course, Universidade Federal do Pará (UFPA), Belém, Pará Brazil, 2003.

More details can be found in their lab web site:
www.lane.ufpa.br/publicacoes.html


Also see below:
Oblique Plane Wave Reflection From Half Space
Radiation from a Circularly Tapered Dielectric Waveguide
Right Hand Circular Polarization (RHCP) Animation
Linear Polarization Animation
Left Hand Elliptical Polarization (LHEP) Animation
Standing Wave Pattern (SWR) Animation
Electromagnetic Propagation of UWB Short Pulse in Random Medium 
Half Wavelength Dipole Antenna Radiation 
Dipole Antenna Radiation 
Dish Antenna Animation (Parabolic reflector) 
FDTD Simulation of a Half Convex Lens

Parallel Waveguides using Periodic Band Gap Structure - FDTD Simulation

This is the second of the series for the waveguiding structures using the periodic band gap materials (The first one is at: Periodic Band Gap (PGB) Waveguide and Propagation - FDTD Simulation).

Here, two simultaneous simulations are shown. In the right one, both excitations are in-phase (cosine-cosine) whereas in the left, the excitations are out of phase by 90 degrees (sine-cosine).

Originally, this was inspired by the following video:
http://www.youtube.com/watch?v=O-6l0bvAda0
Guiding EM waves via periodic structure. The frequency of operation is 11.085 GHz. The relative dielectric permittivity of the square blocks are 11.56 and the ambient medium is air. Each block is 3.5 mm x 3.5 mm.

The main reference is the below dissertation:
Marcelo Bruno Dias, "Estudo da Propagação de Ondas Eletromagnéticas em Estruturas Periódicas". Graduation Dissertation - Electrical Engineering Course, Universidade Federal do Pará (UFPA), Belém, Pará Brazil, 2003.

More details can be found in their lab web site:
www.lane.ufpa.br/publicacoes.html

Also see below:
Half Wavelength Dipole Antenna Radiation
Oblique Plane Wave Reflection From Half Space
Radiation from a Circularly Tapered Dielectric Waveguide
Right Hand Circular Polarization (RHCP) Animation
Linear Polarization Animation
Left Hand Elliptical Polarization (LHEP) Animation
Standing Wave Pattern (SWR) Animation
Electromagnetic Propagation of UWB Short Pulse in Random Medium