Broadband Implantable Antenna for Wireless Power Transfer in Cardiac Pacemaker Applications

2020 ◽  
pp. 1-1 ◽  
Author(s):  
Mengfan Wang ◽  
Haixia Liu ◽  
Pei Zhang ◽  
Xuefang Zhang ◽  
Hong Yang ◽  
...  
Keyword(s):  
Cardiac Pacemaker ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Implantable Antenna

Miniaturized implantable antenna integrated with split resonate rings for wireless power transfer and data telemetry

2017 ◽  
Vol 59 (3) ◽  
pp. 710-714 ◽  
Author(s):  
Huiying Zhang ◽  
Long Li ◽  
Changrong Liu ◽  
Yong-Xin Guo ◽  
Sirao Wu
Keyword(s):  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Implantable Antenna

scholarly journals Integration of Resonant Coil for Wireless Power Transfer and Implantable Antenna for Signal Transfer

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Dong-Wook Seo ◽  
Jae-Ho Lee ◽  
Hyungsoo Lee
Keyword(s):  
Outer Part ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Signal Transfer ◽  
Physiological Signal ◽  
Current Path ◽  
Power Transfer Efficiency ◽  
Implantable Antenna

We propose the integration of the resonant coil for wireless power transfer (WPT) and the implantable antenna for physiological signal transfer. The integration allows for a compact biomedical implantable system such as electrocardiogram (ECG) recorder and pacemaker. While the resonant coils resonate at the frequency of 13.56 MHz for the WPT, the implantable antenna works in the medical implant communications service (MICS) band of 402–405 MHz for wireless communications. They share the narrow substrate area of a bar-type shape; the coil has the current path on the outer part of the substrate and the meandered planar inverted-F antenna (PIFA) occupies the inside of the coil. To verify the potentials of the proposed structure, a prototype is fabricated and testedin vitro. The power transfer efficiency (PTE) of about 20% is obtained at a distance of 15 mm and the antenna gain of roughly −40 dBi is achieved.

scholarly journals A Circularly Polarized Implantable Rectenna for Microwave Wireless Power Transfer

Micromachines ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 121
Author(s):  
Chao Xu ◽  
Yi Fan ◽  
Xiongying Liu
Keyword(s):  
Wireless Power Transfer ◽  
Axial Ratio ◽  
Input Power ◽  
Impedance Bandwidth ◽  
Power Transfer ◽  
Wireless Power ◽  
Circularly Polarized ◽  
Rectangular Slot ◽  
Dc Power ◽  
Implantable Antenna

A circularly polarized implantable antenna integrated with a voltage-doubled rectifier (abbr., rectenna) is investigated for microwave wireless power transfer in the industrial, scientific, and medical (ISM) band of 2.4–2.48 GHz. The proposed antenna is miniaturized with the dimensions of 7.5 mm × 7.5 mm × 1.27 mm by etching four C-shaped open slots on the patch. A rectangular slot truncated diagonally is cut to improve the circular polarization performance of the antenna. The simulated impedance bandwidth in a three-layer phantom is 30.4% (1.9–2.58 GHz) with |S11| below −10 dB, and the 3-dB axial-ratio bandwidth is 16.9% (2.17–2.57 GHz). Furthermore, a voltage-doubled rectifier circuit that converts RF power to DC power is designed on the back of the antenna. The simulated RF-to-DC conversion efficiency can be up to 45% at the input power of 0 dBm. The proposed rectenna was fabricated and measured in fresh pork to verify the simulated results and evaluate the performance of wireless power transfer.

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