Biological channel modeling and implantable UWB antenna design for neural
                        recording systems

Bahrami, Hadi; Rusch, Leslie A.; Gosselin, Benoît

doi:10.1017/cbo9781139629539.037

Cited by 8 publications

(14 citation statements)

References 22 publications

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“…1 shows a wireless system concept that employs multiple neural interface modules connected to a centralized wireless hub through four-conductor neuromodulation leads that support data, clocking, power, and ground connections. These wireline connections can enable operation of submodules spread across distant regions of the body, including deep structures that are difficult to interface with wirelessly due to attenuation of radiated electromagnetic energy [30] or reflection of acoustic waves by bone [31]. Compared to wireless interfacing, wirelines generally offer higher data rates, lower power consumption, enhanced reliability and security, and extended reach.…”

Section: B Communication and Power Interfacesmentioning

confidence: 99%

Integrated neural interfaces

Walker

Rieth

Iyer

et al. 2017

2017 IEEE 60th International Midwest Symposium on Circuits and Systems (MWSCAS)

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Abstract-Electronic interfaces to the nervous system are increasingly important for experimental neuroscience as well as medical diagnostics and therapies. Existing neural interfaces are limited, however, by the use of passive recording and stimulation devices that are connected to active electronics on separate physical platforms through large amounts of passive wiring. This manuscript proposes a new approach to integrate active electronics directly with neural recording and stimulation devices using state-of-the-art silicon processing, assembly, and packaging techniques. System concepts are described for fully wireless operation as well as wireline interfacing through FDA-cleared implantable leads and connectors. The approach offers a more modular paradigm of neural interface design, which is greatly needed as the demand for higher channel counts grows.

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Section: B Communication and Power Interfacesmentioning

confidence: 99%

Integrated neural interfaces

Walker

Rieth

Iyer

et al. 2017

2017 IEEE 60th International Midwest Symposium on Circuits and Systems (MWSCAS)

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“…There have been various attempts to study UWB propagation channel at various locations inside human body e.g. chest [4], abdomen [5], [6], and brain [7]. Nevertheless, to the author's knowledge, UWB channel characteristics at liver location for liver implanted wireless monitoring system has not been reported in any open literature.…”

Section: Introductionmentioning

confidence: 99%

Experimental path loss model for liver implanted wireless communication channel at ultra-wideband range

2018

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Abstract:With the potential use of wireless implanted devices for transplanted liver monitoring applications, it is important to investigate the in-body propagation channel at liver area and to demonstrate the feasibility of the applications. Experimental measurements were performed using our developed multilayer human equivalent phantoms. Subsequently, path loss data were recorded and analyzed for various distances between the implanted and on-body antennas at lower range of ultra-wideband to assess the in-body propagation channel. Finally, our preliminary results indicate a possibility for liver implanted wireless communications using UWB technology in the example case scenario.

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“…In our previous work, we designed a rigid singlepolarization UWB microstrip antenna for neural recording systems [16][17][18]. Single-polarization antennas performance degrades in the presence of angular misalignment between TX and RX antennas, which dual-polarization antennas can correct [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Flexible, Polarization-Diverse UWB Antennas for Implantable Neural Recording Systems

Bahrami¹,

Mirbozorgi²,

Ameli³

et al. 2016

IEEE Trans. Biomed. Circuits Syst.

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107

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Abstract-Implanted antennas for implant-to-air data communications must be composed of material compatible with biological tissues. We design single and dual-polarization antennas for wireless ultra-wideband neural recording systems using an inhomogeneous multi-layer model of the human head. Antennas made from flexible materials are more easily adapted to implantation; we investigate both flexible and rigid materials and examine performance trade-offs. The proposed antennas are designed to operate in a frequency range of 2-11 GHz (having S 11 below -10dB) covering both the 2.45 GHz (ISM) band and the 3.1-10.6 GHz UWB band. Measurements confirm simulation results showing flexible antennas have little performance degradation due to bending effects (in terms of impedance matching). Our miniaturized flexible antennas are 12 mm × 12 mm and 10 mm × 9 mm for single-and dual-polarizations, respectively. Finally, a comparison is made of four implantable antennas covering the 2-11 GHz range: 1) rigid, single polarization, 2) rigid, dual polarization, 3) flexible, single polarization and 4) flexible, dual polarization. In all cases a rigid antenna is used outside the body, with an appropriate polarization. Several advantages were confirmed for dual polarization antennas: 1) smaller size, 2) lower sensitivity to angular misalignments, and 3) higher fidelity.

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Biological channel modeling and implantable UWB antenna design for neural recording systems

Cited by 8 publications

References 22 publications

Integrated neural interfaces

Integrated neural interfaces

Experimental path loss model for liver implanted wireless communication channel at ultra-wideband range

Flexible, Polarization-Diverse UWB Antennas for Implantable Neural Recording Systems

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