A 1.4x teleconverter will reduce the maximum aperture of the lens by a full f-stop, while a 2x teleconverter cuts it by two full stops. So if you have a 300mm f/2.8 lens, adding a 1.4x converter will ...

An integrated directional coupler is designed for a bidirectional communication on a single waveguide by separating both data streams within individual branches. Thereby, an adjustment of the ...

Synthetic aperture radar (SAR) is becoming increasingly important in many military ground surveillance and targeting roles because of its ability to operate in all weather, day and night, and to ...