Designing Graphene-Based Antenna for Terahertz Wave Ablation (TWA) System

Abstract

Cancer is one of the most feared health problems today. Studies on cancer diagnosis and treatment are carried out intensively. In this study, a graphene-based antenna is proposed for cancer diagnosis and treatment with THz radiation therapy, which is a relatively new radiation technique. A graphene-based two-layer monopole antenna is designed for 1.65THz operation frequency. To change the bandwidth and radiation pattern without changing the operating frequency, a graphene ring is placed on the SiO2 substrate (2nd layer).Antenna performance is analyzed for reflection coefficient, realized gain, E-Field. The proposed antenna is obtained approximately %4 bandwidth. A peak gain of 8.52 dB is achieved at 1.65THz within the bandwidth. Antenna design is done in Computer Simulation Technology Studio Suite. It is expected that the results of the THz antenna will make a significant contribution to healthcare applications. The cancer treatment with THz is cheap, easy, and can be used without causing discomfort in patients.

Reconfigurable graphene-based multi-input multi-output antenna design for THz applications

“…It contributes to forming a radiation pattern in the forward direction; the fields terminate at the ground from the patch. can be calculated by using ( 14), (15) [27] :…”

“…The MTM band gaps have the potential to function as band-notch filters and eliminate the possibility of mutual coupling between adjacent antenna elements [14]. Geyikoğlu et al [15] presented a two-layer graphene monopole antenna designed for operating at 1.65 THz with dimensions 32×65 µ𝑚 2 that is used for medical applications (cancer detection and treatment). Research by Rasheed and Abdulnabi [9] shows the toothed log-periodic antenna with bandwidth (7-10) THz and return loss is less than -10 dB.…”

A Comparative Analysis of Graphene Cladding Rectangular Waveguides Filled with Various Materials for 1.65 THz Ablation System

“…According to studies, methylated DNA, an abnormal DNA type found in early-stage cancers, has been found to have a distinct molecular resonance at 1.65 THz [2] [3]. In this context, studies targeting 1.65 THz in the literature [4] [5]. The performance and reliability of the THz system depend on the design of a waveguide that will provide low-loss transmission of radiation from the antenna to the tissue.…”