Mode matching analysis for a new millimeter wave omni-directional antenna consisting of circular rod corrugations gloved with a dielectric shell

2003 ◽  
Author(s):  
Hengzhen Jing ◽  
Shanjia Xu
Keyword(s):  
Millimeter Wave ◽  
Directional Antenna ◽  
Mode Matching ◽  
Dielectric Shell

scholarly journals On the Feasibility of High Speed Railway mmWave Channels in Tunnel Scenario

2017 ◽  
Vol 2017 ◽  
pp. 1-17 ◽  
Author(s):  
Guangkai Li ◽  
Bo Ai ◽  
Danping He ◽  
Zhangdui Zhong ◽  
Bing Hui ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Communication Systems ◽  
High Speed ◽  
Radio Channel ◽  
Wide Band ◽  
Directional Antenna ◽  
Propagation Loss ◽  
High Rate ◽  
Railway Tunnel ◽  
High Data

Rail traffic is widely acknowledged as an efficient and green transportation pattern and its evolution attracts a lot of attention. However, the key point of the evolution is how to develop the railway services from traditional handling of the critical signaling applications only to high data rate applications, such as real-time videos for surveillance and entertainments. The promising method is trying to use millimeter wave which includes dozens of GHz bandwidths to bridge the high rate demand and frequency shortage. In this paper, the channel characteristics in an arched railway tunnel are investigated owing to their significance of designing reliable communication systems. Meantime, as millimeter wave suffers from higher propagation loss, directional antenna is widely accepted for designing the communication system. The specific changes that directional antenna brings to the radio channel are studied and compared to the performances of omnidirectional antenna. Note that the study is based on enhanced wide-band ray tracing tool where the electromagnetic and scattering parameters of the main materials of the tunnel are measured and fitted with predicting models.

scholarly journals Coverage Analysis for Millimeter Wave Networks: The Impact of Directional Antenna Arrays

2017 ◽  
Vol 35 (7) ◽  
pp. 1498-1512 ◽  
Author(s):  
Xianghao Yu ◽  
Jun Zhang ◽  
Martin Haenggi ◽  
Khaled B. Letaief
Keyword(s):  
Millimeter Wave ◽  
Antenna Arrays ◽  
Directional Antenna ◽  
Coverage Analysis ◽  
The Impact

scholarly journals Millimeter‐wave directional‐antenna beamwidth effects on the ITU‐R building entry loss (BEL) propagation model

ETRI Journal ◽  
2019 ◽  
Vol 42 (1) ◽  
pp. 7-16 ◽  
Author(s):  
Juyul Lee ◽  
Kyung‐Won Kim ◽  
Myung‐Don Kim ◽  
Jae‐Joon Park ◽  
Young Keun Yoon ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Directional Antenna ◽  
Propagation Model
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