Raghuraman Selvaraju

A Four-Element Linear Dielectric Resonator Antenna Array for Beamforming Applications With Compensation of Mutual Coupling

A four-element linear dielectric resonator antenna array for beamforming applications with mutual coupling compensation is proposed for long term evolution band 40 (2.3 GHz). The effect of mutual coupling on the array beamforming pattern has been studied for the inter-element spacing of

A Cross Slot Coupling to Enhance Bandwidth of Dual-Layer SIW Structure

0.32\lambda

Broadband resonant elements for 5G reflectarray antenna design

(wavelength), when the main beam is scanned in targeted directions with nulls placed toward unintended directions. Two mutual compensation methods, such as open-circuit voltage method and linear pattern correction method, are applied to compute mutual coupling matrices, which have been used to compute the compensated (coupling free) array elements weights to give the desired beamforming patterns. By applying the compensated complex feed coefficients, the various corrected beamforming patterns have been presented. It has been shown that the array element complex weights computed using the linear pattern correction method is more effective in compensating the effects of mutual coupling than open-circuit voltage method.

Dual-Port MIMO Rectangular Dielectric Resonator Antenna for 4G-LTE Application

Zarina Mohd Noh*, Abdul Rahman Ramli, Marsyita Hanafi, M Iqbal Saripan, Ridza Azri Ramlee 1,2,3,4 Department of Computer and Communication Systems Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia 1,5 Fakulti Kejuruteraan Elektronik dan Kejuruteraan Komputer, Universiti Teknikal Malaysia Melaka (UTeM), Hang Tuah Jaya, 75450 Durian Tunggal, Melaka, Malaysia

A reduced size dual port MIMO DRA with high isolation for 4G applications

The performance investigation of two novel resonant elements is presented in this work for 5G reflectarray antenna design. Two dual resonance elements with wide reflection phase range have been developed from a square patch element by a novel corner bending tactic. The reflection loss and reflection phase range performance of the proposed elements have been compared with conventional square patch element at 26 GHz. The results have shown a reflection phase swing of 629° and 632° for Bent Width and Bent Length elements respectively. The broadband features of proposed elements can radically improve the bandwidth performance of a reflectarray antenna.

Design of Dual Band Stacked RDRA for 5G Applications

A Multi Input Multi Output (MIMO) Rectangular Dielectric Resonator Antenna (RDRA) for 1.8 GHz Long Term Evolution (LTE) applications is investigated and presented. The antenna consisting of two rectangular dielectric resonator elements, both resonators are fed by microstrip feed line is etched on FR4 substrate. The simulated impedance bandwidth for port1 and port2 is 26.38% (1.6176-2.1093 GHz) and 26.80% (1.6146-2.1143GHz) respectively for |S11| ≤ -6dB, which can operate on LTE band 1-4,9,10,35-37 and 39. The gain of the MIMO RDRA is 3.2 dBi and 3.1 dBi at 1.8 GHz for port 1and port 2, respectively. The S-parameters, isolation, gain, and MIMO performance such as correlation coefficient and diversity gain of the presented RDR Antenna have been studied.