Path loss measurements on cylindrical sections. Determining path loss variations with distance and radius at VHF, L band, and GPS/SatCom

2002 ◽  
Author(s):  
G. Fuller
Keyword(s):  
Path Loss ◽  
L Band ◽  
Path Loss Measurements

scholarly journals Characterization of Wearable and Implanted Antennas: Test Procedure and Range Design

2021 ◽  
Author(s):  
Lukas Berkelmann ◽  
Dirk Manteuffel
Keyword(s):  
Test Procedure ◽  
Wireless Body Area Network ◽  
Path Loss ◽  
Area Network ◽  
Test Range ◽  
General Ability ◽  
Test Zone ◽  
Path Loss Measurements

A method for measuring de-embedded antenna parameters of wearable and implanted antennas for on-body communications is presented. It consists of a tapered flat phantom in order to characterize an antenna’s general ability to excite surface waves travelling along the boundary between body tissue and free space expressed by an angular on-body antenna gain. The design offers a test zone large enough for most typical Wireless Body Area Network devices up to smartphone-size while minimizing the required amount of tissue-simulating material. The designed antenna test range is validated in the 2.4 GHz ISM-band. In order to showcase the applicability to a realistic application, different designs of antennas integrated into an implanted pacemaker are characterized by their on-body gain patterns. A comparison of their performance in in-situ path-loss measurements reveals a clear relation to the on-body gain patterns and indicates that this parameter is a suitable measure for enabling educated antenna design for on-body applications.<br>

scholarly journals Measurement and Prediction of Short-Range Path Loss between 27 and 40 GHz in University Campus Scenarios

2020 ◽  
Author(s):  
Glaucio Ramos ◽  
Carlos Vargas ◽  
Luiz Mello ◽  
Paulo Pereira ◽  
Sandro Gonçalves ◽  
...  
Keyword(s):  
Short Range ◽  
Prediction Models ◽  
Path Loss ◽  
Prediction Method ◽  
University Campus ◽  
Millimetre Wave ◽  
Empirical Prediction ◽  
Loss Prediction ◽  
Path Loss Prediction ◽  
Path Loss Measurements

Abstract In this paper, we present the results of short-range path loss measurements in the microwave and millimetre wave bands, at frequencies between 27 and 40 GHz, obtained in a campaign inside a university campus in Rio de Janeiro, Brazil. Existing empirical path loss prediction models, including the alpha-beta-gamma (ABG) model and the close-in free space reference distance with frequency dependent path loss exponent (CIF) model are tested against the measured data, and an improved prediction method that includes the path loss dependence on the height di erence between transmitter and receiver is proposed. A fuzzy technique is also applied to predict the path loss and the results are compared with those obtained with the empirical prediction models.

scholarly journals Path Loss Measurements of Indoor LTE System for the Internet of Things

2017 ◽  
Vol 7 (6) ◽  
pp. 537 ◽  
Author(s):  
Guan-Yi Liu ◽  
Tsung-Yu Chang ◽  
Yung-Chun Chiang ◽  
Po-Chiang Lin ◽  
Jeich Mar
Keyword(s):  
Internet Of Things ◽  
Path Loss ◽  
The Internet ◽  
Path Loss Measurements ◽  
The Internet Of Things

Rural Macrocell Path Loss Measurements for 5G Fixed Wireless Access at 26 GHz

2021 ◽  
Author(s):  
Norshahida Saba ◽  
Lauri Mela ◽  
Muhammad Usman Sheikh ◽  
Jari Salo ◽  
Kalle Ruttik ◽  
...  
Keyword(s):  
Path Loss ◽  
Wireless Access ◽  
Path Loss Measurements ◽  
Fixed Wireless Access ◽  
Fixed Wireless

D-band indoor path loss measurements

2014 ◽  
Author(s):  
Wasif T. Khan ◽  
Seunghwan Kim ◽  
Alenka Zajic ◽  
John Papapolymerou
Keyword(s):  
Path Loss ◽  
Path Loss Measurements

Path-Loss Measurements in Indoor Floor Environment at 2.4 GHz

2017 ◽  
Vol 42 (8) ◽  
pp. 1662-1667
Author(s):  
Kyoung-Min Park ◽  
Jung-Yong Lee ◽  
Wontae Yu ◽  
Seong-Cheol Kim
Keyword(s):  
Path Loss ◽  
Path Loss Measurements

scholarly journals Characterization of Wearable and Implanted Antennas: Test Procedure and Range Design

2021 ◽  
Author(s):  
Lukas Berkelmann ◽  
Dirk Manteuffel
Keyword(s):  
Test Procedure ◽  
Wireless Body Area Network ◽  
Path Loss ◽  
Area Network ◽  
Test Range ◽  
General Ability ◽  
Test Zone ◽  
Path Loss Measurements

A method for measuring de-embedded antenna parameters of wearable and implanted antennas for on-body communications is presented. It consists of a tapered flat phantom in order to characterize an antenna’s general ability to excite surface waves travelling along the boundary between body tissue and free space expressed by an angular on-body antenna gain. The design offers a test zone large enough for most typical Wireless Body Area Network devices up to smartphone-size while minimizing the required amount of tissue-simulating material. The designed antenna test range is validated in the 2.4 GHz ISM-band. In order to showcase the applicability to a realistic application, different designs of antennas integrated into an implanted pacemaker are characterized by their on-body gain patterns. A comparison of their performance in in-situ path-loss measurements reveals a clear relation to the on-body gain patterns and indicates that this parameter is a suitable measure for enabling educated antenna design for on-body applications.<br>

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