Wide Slot Circularly Polarized Conductive Oxide-based Transparent Antenna Design for ISM Band RFID Applications

Author(s):  
Arpan Desai ◽  
Ismail Akdag ◽  
Merih Palandoken ◽  
Cong Danh Bui ◽  
Jayshri Kulkarni ◽  
...  
Author(s):  
Mehdi Hasan Chowdhury ◽  
Quazi Delwar Hossain ◽  
Md. Azad Hossain ◽  
Ray Chak Chung Cheung

<p>In this paper, the development of two novel circularly polarized microstrip antennas is thoroughly explained. These antennas are fed by coaxial feeding technique. One of the primary objectives of the proposed work is to tune the antennas to work in ISM band. This frequency band refers to the internationally recognized radio frequency bandwidth which is to be used explicitly for Industrial, Scientific, and Medical applications. Therefore, these antennas would be suitable to use in the field of wireless biotelemetry. Two new antenna design techniques have been introduced to produce circular polarization, and details of these schemes are described. The proposed microstrip antennas are designed and simulated on Advanced Design System (ADS) software. The return loss of the proposed crescent-cut antenna is -19.3 dB at the operating frequency. The extended corner antenna has the return loss of -29.3 dB at the tuned frequency. The simulation results are also presented and discussed.</p>


2016 ◽  
Vol 15 ◽  
pp. 802-805 ◽  
Author(s):  
Yan Li ◽  
Buning Tian ◽  
Jiangbo Xue ◽  
Guangding Ge

Open Physics ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 651-655 ◽  
Author(s):  
Yilin Liu ◽  
Kama Huang

Abstract A novel design of a coplanar waveguide (CPW) feed antenna array with circular polarization (CP) and a high front-to-back ratio is described. The proposed CP array is achieved by using a compact CPW–slotline transition network etched in the ground plane. The measured results show that this kind of feeding method can improve the impedance bandwidth, as well as the axial ratio bandwidth of the CP antenna array and provide adequate gain. The proposed array can achieve a 6.08% impedance bandwidth and a 4.10% CP bandwidth. Details of the antenna design and experimental results are presented and discussed.


Frequenz ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Navneet Sharma ◽  
Anubhav Kumar ◽  
Asok De ◽  
Rakesh K. Jain

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.


Author(s):  
Tanmaya Kumar Das ◽  
Biswajit Dwivedy ◽  
Debakanta Behera ◽  
Santanu Kumar Behera ◽  
Nemai Chandra Karmakar

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