Sarin V. Pushpakaran

Abstract: A novel four-port multiple-input-multiple-output (MIMO) antenna system is designed using concentric square-ring patch antennas. All four ports are made to resonate at 2.4 GHz ISM band with an overall system dimension of 60×60×1.6 mm 3 . This design uses complementary split-ring resonator (CSRR) loaded on its ground plane for enhanced isolation of - 22 dB between patch antenna elements. CSRR reduces mutual coupling by about 6.5 dB. The antenna operates with a 2:1 VSWR bandwidth of 75 MHz centered at 2.45 GHz. This collocated antenna system satisfies MIMO diversity performance with low envelope correlation between its waveforms. The effectiveness of concentric rings in MIMO design along with proposed isolation enhancement technique is validated using measurements from a prototype.

TL;DR: In this paper, a novel metaresonator inspired dual-band antenna for 2.4/5.2 GHz WLAN applications is presented, which is achieved by utilizing stacking technique on a dog bone shaped dipole antenna.

TL;DR: In this article, a simple stacked metal slab antenna with directional broadside radiation coverage suitable for wireless applications is presented, which utilizes the coupling of magnetic and electrical resonances of the coupled slabs to ensure directional radiation characteristics.

TL;DR: In this paper, a novel idea for generating directional electromagnetic beam using a metamaterial absorber for enhancing radiation from a microwave antenna in the S-band is presented, which constitutes the well-known stacked dogbone doublet working in the absorption mode.

TL;DR: In this article, the authors examined computationally and experimentally the concept of metamaterial cover using an array of split ring resonators (SRRs) for enhancing the transmission in a stacked dipole antenna working in the S band.