Results 31 to 40 of about 53,982 (285)
, 2008 We derive a generalised van Cittert-Zernike (vC-Z) theorem for radio astronomy that is valid for partially polarized sources over an arbitrarily wide field-of-view (FoV).
Carozzi, T. D., Woan, G.
core +2 more sources
Experimental study of depolarization and antenna correlation in tunnels in the 1.3 GHz band [PDF]
, 2019 Measurements have been carried out in a low-traffic road tunnel to investigate the influence of the polarization of the transmitting and receiving antennas on the channel characteristics. A real-time channel sounder working in a frequency band around 1.3
Challita, Frederic +5 more
core +3 more sources
IEEE Photonics Journal, 2019 We present the first demonstration of an actively Q-switched orthogonally polarized dual-wavelength Nd:YLF/YVO4 Raman laser to our knowledge. The gain competition of the orthogonally polarized dual-wavelength fundamental laser at 1047 and 1053 nm ...
Zhiyu Zuo +7 more
doaj +1 more source
Synchronous wearable wireless body sensor network composed of autonomous textile nodes [PDF]
, 2014 A novel, fully-autonomous, wearable, wireless sensor network is presented, where each flexible textile node performs cooperative synchronous acquisition and distributed event detection.
Knockaert, Jos +4 more
core +3 more sources
Synchronized dual-polarity electrospray ionization mass spectrometry [PDF]
Journal of the American Society for Mass Spectrometry, 2009 This work describes the synchronized dual-polarity (DP) electrospray ionization (ESI) method and demonstrates the first DP ESI mass spectra obtained using two mass spectrometers. Stable double Taylor cones were produced by applying two counter electric voltages with opposite polarities to one electrosprayer.
Chen, Han-Kwang +4 more
openaire +2 more sources
Dual-Polarized Ricean MIMO Channels: Modeling and Performance Assessment
, 2012 In wireless communication systems, dual-polarized (DP) instead of single-polarized (SP) multiple-input multiple-output (MIMO) transmission is used to improve the spectral efficiency under certain conditions on the channel and the signal-to-noise ratio ...
Ascheid, Gerd +4 more
core +1 more source
Flexible dual-diversity wearable wireless node integrated on a dual-polarised textile patch antenna [PDF]
, 2014 A new textile wearable wireless node, for operation in the 2.45 GHz industrial, scientific and medical (ISM) band, is proposed. It consists of a dual-polarised textile patch antenna with integrated microcontroller, sensor, memory and transceiver with ...
Knockaert, Jos +4 more
core +2 more sources
The eleven antenna: a compact low-profile decade bandwidth dual polarized feed for reflector antennas [PDF]
, 2006 A novel dual polarized ultrawide-band (UWB) feed with a decade bandwidth is presented for use in both single and dual reflector antennas. The feed has nearly constant beam width and 11 dBi directivity over at least a decade bandwidth.
Kildal, Per-Simon +2 more
core +1 more source
Novel wearable antenna systems for high datarate mobile communication in healthcare [PDF]
, 2014 In critical healthcare applications, there is a need for reliable wideband mobile communication links, implemented by portable units with sufficient autonomy.
Agneessens, Sam +8 more
core +2 more sources
Study and Design of a Diferentially Fed Tapered Slot Antenna Array [PDF]
, 2010 The results of a parametric study and design of an ultrawideband dual-polarized array of differentially-fed tapered slot antenna elements are presented. We examine arrays of bunny-ear antennas and discuss the capabilities and limitations of differential ...
García, Enrique +5 more
core +2 more sources