Olutola Jonah

Wireless Power Transfer in Concrete via Strongly Coupled Magnetic Resonance

The wireless efficiency of the strongly coupled magnetic resonance (SCMR) method is studied here for non-homogenous interfaces. Specifically, SCMRs wireless power transfer from a source in air to a sensor embedded in concrete is analyzed. The concrete material properties are modeled for various humidity levels using the extended Debye model. The performance of SCMR is examined for both plain and reinforced concrete. Finally, rectification of the RF power is performed and the DC power delivered to the embedded sensors battery is calculated.

Orientation insensitive power transfer by magnetic resonance for mobile devices

The efficiency of wireless power transfer (WPT) from an orientation insensitive system to a mobile device by strongly coupled magnetic resonance (SCMR) is reported here. This paper compares an optimal loop-based design in standard SCMR systems with misalignment insensitive system (3D and 3loop structure), which exhibits higher efficiency than typical SCMR devices in several directions in a sphere.

Optimal Design Parameters for Wireless Power Transfer by Resonance Magnetic

The wireless power transfer (WPT) efficiency of systems based on strongly coupled magnetic resonance (SCMR) depends on the Q-factor of the system elements, which is a function of the geometrical parameters. This letter analytically derives the equations that can be used to design optimal loop and helical elements for SCMR systems. Also, for loops and helices, a global maximum condition is derived in order to design SCMR systems with maximal efficiency.

Wireless power transmission to sensors embedded in concrete via Magnetic Resonance

The feasibility of efficient wireless power transfer through Strongly Coupled Magnetic Resonance (SCMR) in non-homogenous interface such as air-concrete is studied here. Specifically, the efficiency of wireless power transmission from a source in air to a sensor embedded in concrete via strongly coupled magnetic resonance is analyzed. The concrete material is modeled for various humidity levels using the extended Debyes model. The efficiency of the SCMR is also analyzed for various depths inside the concrete.

Wireless power transfer to mobile wearable device via resonance magnetic

The wireless power transfer (WPT) efficiency of a mobile wearable medical device (MWMD) by Strongly Coupled Magnetic Resonance (SCMR) method is studied here for air-tissue interfaces. Specifically, SCMRs wireless power transfer from a source of air to a sensor close to tissue is analyzed. A comparison of wireless power transfer efficiency between resonant spirals at different distances are shown. The efficiencies achieved in different areas of the human body are also reported.

Optimized wireless power transfer to RFID sensors via magnetic resonance

Wireless powering of sensors through the strongly coupled magnetic resonance (SCMR) method at the RFID frequency of 27.2 MHz is studied here. The proposed system comprises of two single resonant loops and two self-resonant helical coils, in contrast to the two resonant loops traditionally used in RFID systems. The system is designed using simulation software and is validated by measurements. We illustrate that this design exhibits large efficiency at the desired frequency, which is significantly larger than the efficiency achieved by two conventional RFID loops. This is due to the large quality factor of the two single resonant loops as well as the inductively coupled pair of self-resonant helices employed in this SCMR power scheme.

Efficient wireless powering of sensors embedded in concrete via magnetic resonance

Wireless power propagation via Strongly Coupled Magnetic Resonance (SCMR) by helical resonators through a non-homogenous interface, such as, air-concrete, is analyzed here. The power transfer mechanism consists of two self-resonant coils and two single loops in contrast to the two resonant loops traditionally used in RFID systems. The efficiency of wireless power transmission from a source in air to a sensor embedded in concrete via strongly coupled magnetic resonance is simulated as well as measured. The concrete material is modeled for various humidity levels using the extended Debyes model. The efficiency of the SCMR is also analyzed for different depths inside the concrete.

Optimal helices for wireless power transfer via magnetic resonance

Wireless powering efficiency of systems based on the strongly Coupled Magnetic Resonance (SCMR) depends on the design of the SCMR elements. This paper analytically derives the equations that can be used to design optimal SCMR systems based on helical elements. The analytical results are verified by comparison with simulations.

Wireless powering of biomedical device via magnetic resonance

Wireless power transfer efficiency of system based on the Strongly Coupled Magnetic Resonance (SCMR) is studied here for non-homogenous interfaces. Specifically, the SCMR wireless power transfer from a source in air to a sensor embedded in tissue is analyzed. A comparison of wireless power transfer efficiency between resonant loop and SCMR structure is shown. The efficiencies achieved in different types of tissue are also reported.

Strongly coupled resonance magnetic for RFID applications

Wireless power and data transfer (WPDT) through the strongly coupled magnetic resonance (SCMR) method at an RFID frequency is reported. The proposed system consists of four single resonant loops, in contrast to the two resonant loops traditionally used in RFID. The paper addresses SCMR high Q-factor and low bandwidth with a tradeoff to achieve high bandwidth for data transfer comparable to RFID.