Measurement and characterization of the path loss for ear-to-ear wireless communication

Baqer Nour; Olav Breinbjerg

Measurement and characterization of the path loss for ear-to-ear wireless communication

Baqer Nour, Olav Breinbjerg

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

The path loss of the ear-to-ear wireless communication channel has been measured for the frequencies 1 GHz, 1.6 GHz, 2.6 GHz and 3.6 GHz. The accuracy of the PL measurements was estimated to be 5 dB. Several parameters that could affect the path loss have been investigated. The parameters were chosen to cover all the possible locations and orientations of the antennas near the head. We came to the conclusion that small variations in the locations of the antennas do not affect the path loss of the ear-to-ear channel while the operating frequencies have a large impact on the path loss. The path loss increases as the frequency increases. We measured the path loss ∣PL∣ at 1 GHz to approximately 33 dB for the tangential magnetic dipole and 45 dB for the normal magnetic dipole. These measurements show the importance of the orientation with respect to the surface of the head. We were able to gain 12 dB for the same antenna just by choosing different orientation. The significance of the feeding cables was demonstrated in the measurements with bow-tie dipoles (ant. 4 and 5), where the measurements show smaller path loss than for the low frequency cases. By using numerical simulations we were able to estimate the cable effect on the measurements

Original language	English
Title of host publication	Proceedings of the 5. European Conference on Antennas and Propagation
Publisher	IEEE Computer Society Press
Publication date	2011
Pages	1621-1625
ISBN (Print)	978-1-4577-0250-1
Publication status	Published - 2011
Event	5th European Conference on Antennas and Propagation - Rome, Italy Duration: 11 Apr 2011 → 15 Apr 2011 Conference number: 5 http://www.eucap2011.org/

Conference

Conference	5th European Conference on Antennas and Propagation
Number	5
Country/Territory	Italy
City	Rome
Period	11/04/2011 → 15/04/2011
Internet address	http://www.eucap2011.org/

Keywords

Dipole antennas
Frequency measurement
Magnetic resonance imaging
Antenna measurements
Magnetic heads
Loss measurement

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title = "Measurement and characterization of the path loss for ear-to-ear wireless communication",

abstract = "The path loss of the ear-to-ear wireless communication channel has been measured for the frequencies 1 GHz, 1.6 GHz, 2.6 GHz and 3.6 GHz. The accuracy of the PL measurements was estimated to be 5 dB. Several parameters that could affect the path loss have been investigated. The parameters were chosen to cover all the possible locations and orientations of the antennas near the head. We came to the conclusion that small variations in the locations of the antennas do not affect the path loss of the ear-to-ear channel while the operating frequencies have a large impact on the path loss. The path loss increases as the frequency increases. We measured the path loss ∣PL∣ at 1 GHz to approximately 33 dB for the tangential magnetic dipole and 45 dB for the normal magnetic dipole. These measurements show the importance of the orientation with respect to the surface of the head. We were able to gain 12 dB for the same antenna just by choosing different orientation. The significance of the feeding cables was demonstrated in the measurements with bow-tie dipoles (ant. 4 and 5), where the measurements show smaller path loss than for the low frequency cases. By using numerical simulations we were able to estimate the cable effect on the measurements",

keywords = "Dipole antennas, Frequency measurement, Magnetic resonance imaging, Antenna measurements, Magnetic heads, Loss measurement",

author = "Baqer Nour and Olav Breinbjerg",

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language = "English",

isbn = "978-1-4577-0250-1",

pages = "1621--1625",

booktitle = "Proceedings of the 5. European Conference on Antennas and Propagation",

publisher = "IEEE Computer Society Press",

note = "5th European Conference on Antennas and Propagation, EUCAP 2011 ; Conference date: 11-04-2011 Through 15-04-2011",

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AU - Nour, Baqer

AU - Breinbjerg, Olav

N1 - Conference code: 5

PY - 2011

Y1 - 2011

N2 - The path loss of the ear-to-ear wireless communication channel has been measured for the frequencies 1 GHz, 1.6 GHz, 2.6 GHz and 3.6 GHz. The accuracy of the PL measurements was estimated to be 5 dB. Several parameters that could affect the path loss have been investigated. The parameters were chosen to cover all the possible locations and orientations of the antennas near the head. We came to the conclusion that small variations in the locations of the antennas do not affect the path loss of the ear-to-ear channel while the operating frequencies have a large impact on the path loss. The path loss increases as the frequency increases. We measured the path loss ∣PL∣ at 1 GHz to approximately 33 dB for the tangential magnetic dipole and 45 dB for the normal magnetic dipole. These measurements show the importance of the orientation with respect to the surface of the head. We were able to gain 12 dB for the same antenna just by choosing different orientation. The significance of the feeding cables was demonstrated in the measurements with bow-tie dipoles (ant. 4 and 5), where the measurements show smaller path loss than for the low frequency cases. By using numerical simulations we were able to estimate the cable effect on the measurements

AB - The path loss of the ear-to-ear wireless communication channel has been measured for the frequencies 1 GHz, 1.6 GHz, 2.6 GHz and 3.6 GHz. The accuracy of the PL measurements was estimated to be 5 dB. Several parameters that could affect the path loss have been investigated. The parameters were chosen to cover all the possible locations and orientations of the antennas near the head. We came to the conclusion that small variations in the locations of the antennas do not affect the path loss of the ear-to-ear channel while the operating frequencies have a large impact on the path loss. The path loss increases as the frequency increases. We measured the path loss ∣PL∣ at 1 GHz to approximately 33 dB for the tangential magnetic dipole and 45 dB for the normal magnetic dipole. These measurements show the importance of the orientation with respect to the surface of the head. We were able to gain 12 dB for the same antenna just by choosing different orientation. The significance of the feeding cables was demonstrated in the measurements with bow-tie dipoles (ant. 4 and 5), where the measurements show smaller path loss than for the low frequency cases. By using numerical simulations we were able to estimate the cable effect on the measurements

KW - Dipole antennas

KW - Frequency measurement

KW - Magnetic resonance imaging

KW - Antenna measurements

KW - Magnetic heads

KW - Loss measurement

M3 - Article in proceedings

SN - 978-1-4577-0250-1

SP - 1621

EP - 1625

BT - Proceedings of the 5. European Conference on Antennas and Propagation

PB - IEEE Computer Society Press

T2 - 5th European Conference on Antennas and Propagation

Y2 - 11 April 2011 through 15 April 2011

ER -

Measurement and characterization of the path loss for ear-to-ear wireless communication

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Keywords

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