Results 31 to 40 of about 55,571 (304)
Dual-polarized UWB antenna array
2009 IEEE International Conference on Ultra-Wideband, 2009 The paper describes a dual-polarized antenna array for Impulse Radio Ultra Wideband (IR-UWB) applications. Firstly a brief description of the single radiator is given. Next the prototype is presented and measured data is compared with the simulated one. The linear array consisting of four components achieves a very narrow mean 3 dB beam width, which is
Adamiuk, G. +3 more
openaire +3 more sources
IEEE Access, 2019 A planar double-layer hybrid decoupling structure with the polarization-insensitive characteristics is proposed as an effective isolator for wideband, circularly/dual-polarized, high-density patch arrays.
Zhiyuan Chen +4 more
doaj +1 more source
Dual-Band and Multi-State Polarization Conversion Using aTerahertz Symmetry-Breaking Metadevice
Nanomaterials, 2023 We numerically and experimentally demonstrate a terahertz metadevice consisting of split-ring resonators (SRRs) present within square metallic rings. This device can function as a dual-band polarization converter by breaking the symmetry of SRRs. Under x-
Yuwang Deng +7 more
doaj +1 more source
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
Delivering live-action to handheld devices: experimental results and recommendations [PDF]
, 2009 This paper addresses the broadcast capabilities of WiFi systems transmitting to handheld devices. The analysis includes a comparison of different antennas at the access point (AP) in terms of received signal strength indication (RSSI) for different ...
Bull, DR +3 more
core +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
Polarization properties of specular and dense multipath components in a large industrial hall [PDF]
, 2014 This paper presents an analysis of the polarization characteristics of specular and dense multipath components (SMC & DMC) in a large industrial hall based on frequency-domain channel sounding experiments at 1.3 GHz with 22 MHz bandwidth.
Gaillot, Davy P +6 more
core +3 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
A Left/Right-Handed Dual Circularly-Polarized Antenna With Duplexing and Filtering Performance
IEEE Access, 2019 A shared-radiator dual-band dual-sense circularly-polarized (CP) microstrip antenna with duplexing and filtering functions is presented. For each band, there is a coupling network, which consists of a hairpin resonator, a straight slot, and a U-slot, and
Jian-Feng Li +4 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