2008 NOV 3 - (VerticalNews.com) -- "A miniaturised frequency selective surface (FSS) loaded with lumped components is presented," researchers in Sheffield, the United Kingdom report.

  "The FSS uses inductors and capacitors to provide a bandpass response with a simulated unit cell size of lambda/115 with a - 3 dB bandwidth of 23.9%. This is the first reported use of the combination of capacitors and inductors to provide miniaturisation to this extent," wrote H. Liu and colleagues, University of Sheffield ...read more

  2008 NOV 3 - (VerticalNews.com) -- "All-optical ultra-wideband (UWB) doublet pulse generation based on the multiple nonlinear effects of a single semiconductor optical amplifier (SOA) is demonstrated. First, a monocycle pulse is obtained by means of cross-gain modulation and self gain-saturation in the SOA, and a Gaussian pulse at conjugated light is obtained using four-wave mixing of the SOA," researchers in Wuhan, People's Republic of China report ...read more

  2008 NOV 3 - (VerticalNews.com) -- According to a study from Istanbul, Turkey, "A novel technique is presented for the construction of full-rate, full-diversity space-time block codes (STBCs) from orthogonal STBCs (OSTBCs), having empty slots left in their codeword matrices for orthogonality."

  "Two new STBCs are obtained, which are both full-rate and full-diversity, for three and four transmit antennas. The higher decoding complexity of these structures is reduced owing to non-orthogonality by using a conditional maximum-likelihood decoder," wrote E. Basar and colleagues, Istanbul Technical University ...read more