A Novel Microstrip Implantable Antenna at ISM Band

Author(s):  
Ying-Qi Jiang ◽  
Chen Liu ◽  
Xiao-Jiao Mo ◽  
Peng-Fei Xue ◽  
Kwok. L. Chung ◽  
...  
Keyword(s):  
Ism Band ◽  
ICT Express ◽  
2021 ◽  
Author(s):  
G. Narmadha ◽  
M. Malathi ◽  
S. Ashok Kumar ◽  
T. Shanmuganantham ◽  
S. Deivasigamani
Keyword(s):  
Ism Band ◽  

2013 ◽  
Vol 6 (2) ◽  
pp. 167-172 ◽  
Author(s):  
Srinivasan Ashok Kumar ◽  
Thangavelu Shanmuganantham

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.


2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Ke Zhang ◽  
Changrong Liu ◽  
Xueguan Liu ◽  
Huiping Guo ◽  
Xinmi Yang

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.


2018 ◽  
Vol 17 (8) ◽  
pp. 1473-1477 ◽  
Author(s):  
Yudi Zhang ◽  
Changrong Liu ◽  
Xueguan Liu ◽  
Ke Zhang ◽  
Xinmi Yang

Author(s):  
Ju-Qing Ran ◽  
Zu-Hang Li ◽  
Jun-Xi Wang ◽  
Yu Liu ◽  
Wei-Hua Zong ◽  
...  
Keyword(s):  
Ism Band ◽  

Micromachines ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 70 ◽  
Author(s):  
Yi Fan ◽  
Xiongying Liu ◽  
Jiming Li ◽  
Tianhai Chang

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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