Investigation of RF transmission properties of human tissues

Werber, D.; Schwentner, A.; Biebl, Erwin

doi:10.5194/ars-4-357-2006

Cited by 76 publications

(31 citation statements)

References 3 publications

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“…Generally, three different techniques have been used to propagate a signal onto the human body: Galvanic coupling [14][15][16][17][18], capacitive coupling [17][18][19][20][21][22], and RF links [23][24][25][26][27][28][29]. Usually higher frequencies are not suitable for intrabody communication due to the lossy nature of biological tissues [30,31].…”

mentioning

confidence: 99%

Data Packet Transmission Through Fat Tissue for Wireless IntraBody Networks

Asan

Penichet

Shah

et al. 2017

IEEE J. Electromagn. RF Microw. Med. Biol.

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This work explores high data rate microwave communication through fat tissue in order to address the wide bandwidth requirements of intra-body area networks. We have designed and carried out experiments on an IEEE 802.15.4 based WBAN prototype by measuring the performance of the fat tissue channel in terms of data packet reception with respect to tissue length and power transmission. This paper proposes and demonstrates a high data rate communication channel through fat tissue using phantom and ex-vivo environments. Here, we achieve a data packet reception of approximately 96 % in both environments. The results also show that the received signal strength drops by ~1 dBm per 10 mm in phantom and ~2 dBm per 10 mm in ex-vivo. The phantom and ex-vivo experimentations validated our approach for high data rate communication through fat tissue for intrabody network applications. The proposed method opens up new opportunities for further research in fat channel communication. This study will contribute to the successful development of high bandwidth wireless intra-body networks that support high data rate implanted, ingested, injected, or worn devices.

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mentioning

confidence: 99%

Data Packet Transmission Through Fat Tissue for Wireless IntraBody Networks

Asan

Penichet

Shah

et al. 2017

IEEE J. Electromagn. RF Microw. Med. Biol.

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“…Also, for lower frequencies, e.g., 100-300 GHz, the absorption loss would be under 10 dB. Note that fat and muscles have lower attenuation values [37]. Therefore, the calculations here are valid for inside the body communication.…”

Section: Appendix B Calculation Of Path Loss In Aqueous Environmentmentioning

confidence: 93%

DRIH-MAC: A Distributed Receiver-Initiated Harvesting-Aware MAC for Nanonetworks

Mohrehkesh

Weigle

Das

2015

IEEE Trans. Mol. Biol. Multi-Scale Commun.

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Abstract-In this paper, we introduce DRIH-MAC, a distributed receiver-initiated medium access control protocol for communication among nanonodes in a wireless electromagnetic nanonetwork. DRIH-MAC is developed based on the following principles: 1) communication starts via the receiver with the goal of maximizing the energy utilization; 2) the distributed scheme for accessing the medium is designed based on graph coloring; and 3) communication scheduling works in coordination with the energy harvesting process. DRIH-MAC is based on a probabilistic scheme to create a scalable and light-weight solution, which minimizes collisions and maximizes the utilization of harvested energy, and can be used in a wide variety of applications. Through simulation experiments, we demonstrate the efficiency of DRIH-MAC in a sample medical monitoring application. In particular, DRIH-MAC can improve energy utilization by 50% as compared to a random MAC protocol. Furthermore, it can satisfy application requirements such as delay, even with low energy harvesting rates.

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“…Properties of human body tissues are listed in [26]. These properties were used in the wearable system development.…”

Section: Energy Harvesting Wearable Systems For Medical and Sport Appmentioning

confidence: 99%

“…Small printed antennas are usually used in wearable communication and medical systems [9]- [35]. Electrical properties of human tissues have been investigated in [25] [26]. Human body effects on the electrical performance of wearable systems are investigated in this research.…”

Section: Introductionmentioning

confidence: 99%

New Wideband Passive and Active Wearable Energy Harvesting Systems for Wearable Sensors

Sabban¹

2017

JST

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Demand for green energy is in continuous growth. Wide band efficient wearable systems and antennas are crucial for energy harvesting wearable systems for medical and sport wearable sensors. Small harvesting antennas suffer from low efficiency. The efficiency of energy harvesting wearable systems may be improved by using active wearable harvesting systems with low power consumption. Amplifiers may be connected to the wearable antenna feed line to increase the system dynamic range. Novel active wearable harvesting systems are presented in this paper. Notch and Slot antennas are low profile and low cost and may be employed in energy harvesting wearable systems. The wearable harvesting system components are assembled on the same PCB. The notch and slot antennas bandwidth is up to 100% for VSWR better than 3:1. The slot antenna gain is around 3 dBi with efficiency higher than 90%. The antennas electrical parameters were computed in vicinity of the human body. The active antenna gain is 24 ± 2.5 dB for frequencies from 200 MHz to 900 MHz. The active antenna gain is 12.5 ± 2.5 dB for frequencies from 1 GHz to 3 GHz. The active slot antenna Noise Figure is 0.5 ± 0.3 dB for frequencies from 200 MHz to 3.3 GHz.

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Investigation of RF transmission properties of human tissues

Cited by 76 publications

References 3 publications

Data Packet Transmission Through Fat Tissue for Wireless IntraBody Networks

Data Packet Transmission Through Fat Tissue for Wireless IntraBody Networks

DRIH-MAC: A Distributed Receiver-Initiated Harvesting-Aware MAC for Nanonetworks

New Wideband Passive and Active Wearable Energy Harvesting Systems for Wearable Sensors

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