Modeling the Space-and Time-Variant Ultra-Wideband Propagation Channel

2006 ◽  
Author(s):  
Pascal Pagani ◽  
Patrice Pajusco
Keyword(s):  
Ultra Wideband ◽  
Propagation Channel ◽  
Space And Time

Ultra-wideband indoor propagation channel: Measurements, analysis and modeling

2006 ◽  
Author(s):  
Zoubir Irahhauten ◽  
Alexander Yarovoy ◽  
Gerard J. M. Janssen ◽  
Homayoun Nikookar ◽  
Leo P. Ligthart
Keyword(s):  
Ultra Wideband ◽  
Indoor Propagation ◽  
Channel Measurements ◽  
Propagation Channel

Time-domain analysis of compact dual band-notched slot antenna in indoor environments

2018 ◽  
Vol 10 (10) ◽  
pp. 1186-1195 ◽  
Author(s):  
Seyed Ramin Emadian ◽  
Javad Ahmadi-Shokouh
Keyword(s):  
Time Domain ◽  
Ground Plane ◽  
Ultra Wideband ◽  
Dual Band ◽  
Slot Antenna ◽  
Back Side ◽  
Indoor Propagation ◽  
Propagation Channel ◽  
Channel Characteristics ◽  
Compact Size

AbstractFrequency- and time-domain characteristics as well as indoor propagation channel impulse response of a compact dual band-notched ultra-wideband (UWB) slot antenna are investigated in this paper. The antenna consists of a narrow rectangular radiation patch and a rectangular wide slot in the modified ground plane. A pair of L-shaped stubs are connected to the radiation patch to obtain band-notched property in WLAN band and a narrow straight stub is placed on the back side of the substrate to create band-notched characteristics in X-band downlink satellite communication system. Moreover, two small parasitic strips are added to the radiation patch to enhance the bandwidth (BW) of the antenna up to 14 GHz. A comprehensive study on time-domain and indoor propagation channel characteristics of the proposed antenna is also presented throughout the paper. A ray-tracing approach based on geometrical optics is applied to analyze the indoor channel characteristics. The designed antenna not only has a wide BW and compact size but also has appropriate radiation and time-domain characteristics over the antenna operating BW. The measured and simulated results are in good agreement. These advantages make the proposed antenna as a desirable option for UWB impulse radio applications.

Characterization of the Ultra Wideband Body Area Propagation Channel

2006 ◽  
Author(s):  
A. Fort ◽  
C. Desset ◽  
J. Ryckaert ◽  
P. De Doncker ◽  
L. Van Biesen ◽  
...  
Keyword(s):  
Ultra Wideband ◽  
Propagation Channel ◽  
Body Area
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