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Analysis reconfigurable frequency textile antenna in bending condition

2017-01-01 , Shakhirul Mat Salleh , Muzammil Jusoh , Abdul Hafiizh Ismail , Hasliza A Rahim @ Samsuddin , Kamarudin M.R. , Thennarasan Sabapathy , Herwansyah Lago

In this paper, the analysis of reconfigurable frequency textile antenna in bending conditions is presented. The antenna consists of a truncated rectangular patch and slotted ground plane made by ShieldIt Super. Felt fabric is used as an antenna substrate. The proposed antenna is capable to reconfigure at seven different states frequencies by using three PIN diodes. The Circular Polarization (CP) is achieved at the GPS operating frequency. Meanwhile, the proposed antenna operates as a Linear Polarization (LP) at high operating frequencies. The performances of antenna in bending conditions is analyze since the textile antenna usually attached on the body will easily bend due to the human body structures. Details of the simulation results for antenna in bending condition are discussed.

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Radiation pattern reconfigurable MIMO Antenna with practical DC bias network

2022-01-01 , Jaya Bharath A/L Gopalakrishnan , Thennarasan A/L Sabapathy , Muzammil Jusoh , Hasliza A Rahim @ Samsuddin , Muhammad Ramlee Kamarudin , Soh Ping Jack

This paper presents a radiation pattern reconfigurable (RPR) based multiple-input multiple-output (MIMO) antenna. The proposed antenna operates at 3.5 GHz for all switching conditions with S21 results of less than -20 dB. This work specifically focuses on implementing a practical DC bias network for the previously proposed RPR-MIMO antenna. The DC bias design is crucial where the tilt angle is slightly affected. This could be due to the isolation loss and insertion loss provided by the actual switch; and the DC bias lines that were constructed using a few DC blocking capacitors and RF chokes. Finally, a comprehensive analysis was carried out to examine the beam steering performance of the antenna when implemented with the DC bias network.

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Design of Electronically Steerable High Mode Dielectric Resonator Antenna using PIN Diode

2020-09-28 , Wei C.K. , Muzammil Jusoh , Thennarasan Sabapathy , Mohamed Nasrun Osman , Wan Azani Wan Mustafa , Alaydrus M. , Awal M.R. , Hasliza A Rahim @ Samsuddin , Mohd Najib Mohd Yasin

This paper presents a reconfigurable beam dielectric resonator antenna (DRA) at 2.4 GHz by adopting the yagi-uda concept. Rectangular dielectric resonator antenna (RDRA) have been chosen as the radiator and fed by slot aperture. The antenna is designed in Taconic substrate with permittivity of 2.2. Firstly, a single antenna with two different modes is designed and investigated. The best performance mode in term of gain is then used to design the single driven RDRA with two parasitic RDRA, connected with the four RF pin diode BAR50-02V as switch. The analysis of the gap between driven and parasitic element is investigated. Four different types of switch configuration have been carried out to identify the performance of antenna in different cases. Depending on the switch configurations, the designed antenna can achieved highest gain of 7.386 dB and have steering angle capability at-42°, 42°,-54° and 54°.