A Circularly Polarized Implantable Antenna for 2.4-GHz ISM Band Biomedical Applications

2017 ◽  
Vol 16 ◽  
pp. 2554-2557 ◽  
Author(s):  
Zhi-Jie Yang ◽  
Shao-Qiu Xiao ◽  
Lei Zhu ◽  
Bing-Zhong Wang ◽  
Hui-Lin Tu
Keyword(s):  
Biomedical Applications ◽  
Circularly Polarized ◽  
Ism Band ◽  
Implantable Antenna

Coplanar waveguide-fed ISM band implantable crossed-type triangular slot antenna for biomedical applications

2013 ◽  
Vol 6 (2) ◽  
pp. 167-172 ◽  
Author(s):  
Srinivasan Ashok Kumar ◽  
Thangavelu Shanmuganantham
Keyword(s):  
Biomedical Applications ◽  
Biomedical Application ◽  
Coplanar Waveguide ◽  
Impedance Matching ◽  
High Gain ◽  
Slot Antenna ◽  
Center Frequency ◽  
Ism Band ◽  
High Data ◽  
Implantable Antenna

A novel coplanar waveguide fed Industrial, Scientific, and Medical (ISM) band implantable crossed-type triangular slot antenna is proposed for biomedical applications. The antenna operates at the center frequency of 2450 MHz, which is in ISM band, to support GHz wideband communication for high-data rate implantable biomedical application. The size of the antenna is 78 mm3 (10 mm × 12 mm × 0.65 mm). The simulated and measured bandwidths are 7.9 and 8.2% at the resonant frequency of 2.45 GHz. The specific absorption rate distribution induced by the implantable antenna inside a human body tissue model is evaluated. The communication between the implanted antenna and external device is also examined. The proposed antenna has substantial merits such as miniaturization, lower return loss, better impedance matching, and high gain over other implanted antennas.

Compact circular polarized CPW antenna for WLAN and biomedical applications

Frequenz ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Navneet Sharma ◽  
Anubhav Kumar ◽  
Asok De ◽  
Rakesh K. Jain
Keyword(s):  
Biomedical Applications ◽  
Impedance Matching ◽  
Ground Plane ◽  
Surface Current ◽  
Axial Ratio ◽  
Breast Tumors ◽  
Maximum Permissible Level ◽  
Circularly Polarized ◽  
Ism Band ◽  
Phantom Model

Abstract A compact, circularly polarized, CPW-fed antenna is proposed for wearable applications in ISM Band (5.8 GHz). The antenna is based on DGS, where the ground plane is responsible for impedance matching. The 10 dB impedance of the proposed antenna varies from 5.39 GHz to 5.94 GHz. The circular stub introduced in the ground plane mitigates the surface current and enriches the 3 dB axial ratio from 5.73 GHz to 5.92 GHz. Proposed antenna exhibits the LHCP and RHCP pattern of circular polarization, the antenna can effectively work for biomedical and wearable applications. The antenna is analyzed on the skin phantom model and the SAR value obtained is 1.218 W/kg, which is below the maximum permissible level. The proposed antenna is also used for the detection of breast tumors.

scholarly journals Miniaturized Circularly Polarized Implantable Antenna for ISM-Band Biomedical Devices

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Ke Zhang ◽  
Changrong Liu ◽  
Xueguan Liu ◽  
Huiping Guo ◽  
Xinmi Yang
Keyword(s):  
Patch Antenna ◽  
Axial Ratio ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Optimized Design ◽  
Circularly Polarized ◽  
Ism Band ◽  
Microstrip Patch ◽  
Compact Size ◽  
Implantable Antenna

A compact circularly polarized antenna operating at 915 MHz industrial, scientific, and medical (ISM) band for biomedical implantable applications is presented and experimentally measured. The proposed antenna can be miniaturized to a large extent with the compact size of 15 × 15 × 1.27 mm3 by means of loading patches to a ring-shaped microstrip patch antenna. An impedance bandwidth of 10.6% (865–962 MHz) for reflection coefficient less than −10 dB can be obtained. Meanwhile, the simulated 3 dB axial-ratio (AR) bandwidth reaches 14 MHz. Finally, the optimized design was fabricated and tested, and the measured results agree well with simulated results.

A Wideband Circularly Polarized Implantable Patch Antenna for ISM Band Biomedical Applications

2020 ◽  
Vol 68 (3) ◽  
pp. 2399-2404 ◽  
Author(s):  
Zhan Xia ◽  
Hua Li ◽  
Zongze Lee ◽  
Shaoqiu Xiao ◽  
Wei Shao ◽  
...  
Keyword(s):  
Patch Antenna ◽  
Biomedical Applications ◽  
Circularly Polarized ◽  
Ism Band

A Wideband Circularly Polarized Implantable Antenna for 915 MHz ISM-Band Biotelemetry Devices

2018 ◽  
Vol 17 (8) ◽  
pp. 1473-1477 ◽  
Author(s):  
Yudi Zhang ◽  
Changrong Liu ◽  
Xueguan Liu ◽  
Ke Zhang ◽  
Xinmi Yang
Keyword(s):  
Circularly Polarized ◽  
Ism Band ◽  
Implantable Antenna

scholarly journals A Miniaturized Circularly-Polarized Antenna for In-Body Wireless Communications

Micromachines ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 70 ◽  
Author(s):  
Yi Fan ◽  
Xiongying Liu ◽  
Jiming Li ◽  
Tianhai Chang
Keyword(s):  
Wireless Communications ◽  
Ex Vivo ◽  
Axial Ratio ◽  
Impedance Bandwidth ◽  
Circularly Polarized ◽  
Ism Band ◽  
Left Handed ◽  
Current Path ◽  
Implantable Antenna ◽  
Good Agreement

A novel miniaturized single-fed circularly-polarized (CP) microstrip patch antenna operating in the Industrial, Scientific, Medical (ISM) band of 2.40–2.48 GHz, is comprehensively proposed for implantable wireless communications. By employing reactive loading in the arrow-shaped slotted patch to form slow wave effect and embedding V-shaped slots into patch to lengthen the current path, the proposed implantable antenna is minimized with the overall dimensions of 9.2 mm × 9.2 mm × 1.27 mm. The radiation patterns of the proposed antenna illustrate the performance of left-handed circular polarization. The simulated results show that an impedance bandwidth of 7.2% (2.39–2.57 GHz) and an axial ratio bandwidth of 3.7% (2.39–2.48 GHz) at the ISM band are achieved, respectively. Ex vivo measured results are in good agreement with the corresponding simulated ones.

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