scholarly journals An overview of available metamaterial-based antenna for non-invasive hyperthermia cancer treatment

2019 ◽  
Vol 14 (2) ◽  
pp. 697 ◽  
Author(s):  
Nabilah Abdul Jaffar ◽  
Norlida Buniyamin ◽  
Kasumawati Lias
Keyword(s):  
Cancer Treatment ◽  
Hot Spots ◽  
Microstrip Antenna ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Treatment Procedure ◽  
Focusing Effect ◽  
Non Invasive ◽  
Left Handed ◽  
Tumor Area

This paper presents the outcome of a literature review that an overview of various types of antenna and metamaterial applicator performance towards cancerous tissue or cell for non-invasive hyperthermia cancer treatment (NIHCT) procedure. From the review, it shows that when LHM lens integrated with an antenna, focusing capabilities of the antenna towards the cancerous area can be improved. However, current applicators have a poor focusing effect when directed towards the actual tumor area. In conjunction with that, this paper proposes a new design of modified applicator that is microstrip antenna integrated with left-handed metamaterial (LHM) lens. The antenna termed microstrip-LHM (M-LHM) lens antenna is proposed for use in NIHCT. It is expected to improve the focusing capabilities of an antenna which is used to kill the cancerous area and thus improve the hyperthermia cancer treatment procedure success rate. In addition, this paper provides an overview of heating techniques used in hyperthermia to enhance focusing capabilities and a few metamaterial advantages that can improve the focusing effect and reduced the hot-spots. Specific Absorption Rate (SAR) will be investigated to evaluate the focusing abilities of the proposed applicator using the SEMCAD X Solver.

scholarly journals Dual Slot H Shape Antenna for SAR Estimation

2020 ◽  
Vol 8 (5) ◽  
pp. 3376-3380
Keyword(s):  
Mobile Communication ◽  
Microstrip Antenna ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Equal Size ◽  
Specific Absorption

In the proposed work, H-shaped microstrip antenna is designed with two slots. Itoperates at a frequency of 2.2GHz with a FR-4 substrate. The proposed antenna is designed for UHF application like mobile communication. The dimension of the proposed antenna is 42 x 30x 1.6 mm^3. Two equal size parasitic patches are being introduced to implement the H shape and simulated using HFSS software. Further, Specific Absorption Rate (SAR) of the proposed antenna is found out. Average SAR value for this proposed design appears to be 0.39 W/Kg, which is also far less than the prescribed value by Telecom Engineering Center (TEC) of 1.6W/Kg.

A Novel Wearable Circularly Polarized Antenna in Body-Centric Wireless Communications

2011 ◽  
Vol 403-408 ◽  
pp. 1946-1949 ◽  
Author(s):  
Ning Liu ◽  
Ying Hua Lu ◽  
Si Hai Qiu ◽  
Peng Li
Keyword(s):  
Wireless Communications ◽  
Microstrip Antenna ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
The Body ◽  
Communication Link ◽  
Layer Model ◽  
Research Topics ◽  
Circularly Polarized ◽  
Textile Antenna

Wearable, textile-based antennas are dominated research topics for body-centric communications because it could be easily worn on body and integrated into clothes. Since the antenna will operate on a moving person, a circularly polarized antenna is needed in order to optimize the off-body communication link. A wearable circularly polarized textile antenna for body-centric wireless communications is designed in this paper. The proposed antenna is a square-ring microstrip antenna with truncated corners with the bandwidth of 9% when off the body. When it is near the body, we simulate the human body as three-layer model including skin, fat and muscle and put the antenna at different distances to the body. The situation of antenna bending is also simulated at different radii. Specific Absorption Rate was evaluated at last.

scholarly journals A Flexible Metamaterial Based Printed Antenna for Wearable Biomedical Applications

Sensors ◽  
2021 ◽  
Vol 21 (23) ◽  
pp. 7960
Author(s):  
Ammar Al-Adhami ◽  
Ergun Ercelebi
Keyword(s):  
Human Body ◽  
Microstrip Antenna ◽  
Communication Systems ◽  
Biomedical Applications ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Human Head ◽  
Wireless Communication Systems ◽  
Printed Antenna ◽  
Nanoparticle Ink

This paper presents a microstrip antenna based on metamaterials (MTM). The proposed antenna showed several resonances around the BAN and ISM frequency bands. The antenna showed a suitable gain for short and medium wireless communication systems of about 1 dBi, 1.24 dBi, 1.48 dBi, 2.05 dBi, and 4.11 dBi at 403 MHz, 433 MH, 611 Mz, 912 MHz, and 2.45 GHz, respectively. The antenna was printed using silver nanoparticle ink on a polymer substrate. The antenna size was reduced to 20 × 10 mm2 to suit the different miniaturized wireless biomedical devices. The fabricated prototype was tested experimentally on the human body. The main novelty with this design is its ability to suppress the surface wave from the patch edges, significantly reducing the back radiation toward the human body when used close to it. The antenna was located on the human head to specify the specific absorption rate (SAR). It was found in all cases that the proposed antenna showed low SAR effects on the human body.

SIMULATION STUDY OF AN EBG-M APPLICATOR TOWARDS NON-INVASIVE BREAST HYPERTHERMIA CANCER PROCEDURE

2016 ◽  
Vol 78 (5-6) ◽  
Author(s):  
Kasumawati Lias ◽  
Norlida Buniyamin ◽  
Mohd Zulkarnaen Ahmad Narihan
Keyword(s):  
Cancer Cell ◽  
Simulation Study ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Fdtd Simulation ◽  
Radiation Absorption ◽  
Simulation Studies ◽  
Specific Absorption ◽  
Non Invasive

Interest in the development of hyperthermia for cancer procedure is growth explosively all over the years as it is able to damage and kill the cancer cell non-invasively. An EBG-M antenna is designed with FDTD simulation packages, which is then applied towards treated cancerous area, where for the purpose of this simulation studies, breast is developed as the targeted cancer area to be treated. The radiation absorption is presented as the results obtained to be compared with previous works and also to be analyzed. It has been recognized that the designed antenna or also called as the applicator is able to offer depth radiation absorption and also improved the focusing, which is represented by the specific absorption rate (SAR) distribution towards breast hyperthermia cancer procedure. 

Variability of Specific Absorption Rate of Human Body for Various Configurations of Tablet Computer in Vicinity of Abdomen

2015 ◽  
Vol E98.B (7) ◽  
pp. 1173-1181 ◽  
Author(s):  
Akihiro TATENO ◽  
Tomoaki NAGAOKA ◽  
Kazuyuki SAITO ◽  
Soichi WATANABE ◽  
Masaharu TAKAHASHI ◽  
...  
Keyword(s):  
Human Body ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Tablet Computer ◽  
Specific Absorption
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