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2 International Journal of Electronics and Telecommunications

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Modified Groove Coupled Compact EBG Unit Cell as Notch Filter in a UWB Antenna

Sarmah Kumaresh, Goswami Sivaranjan, Sarma Angana, Baruah Sunandan

International Journal of Electronics and Telecommunications

2020

Vol. 66, No. 2

261--266

In this paper, a conventional mushroom-type EBG unit cell is made compact by etching a C-slot at its conducting surface. Further, the C-slotted mushroom-type EBG unit cell is coupled with a microstrip line using a novel groove-coupling technique to design a notch filter. The arrangement has achieved in the reduction of the electrical size of the mushroom type EBG unit cell by 46.15% and create a stop band suppression of -12 dB. The proposed EBG is applied to notch a narrow band centered at 5.2 GHz along with an ultra-wideband antenna. The far field gain of the antenna is suppressed by -5.8 dBi along the direction of its major lobe at 5.2 GHz. The overall size of the antenna system is 19 x 27 x 1.6 mm³ which is compact. The performance of the antenna is validated from the simulation and measured results.

Design and Analysis of Circular Slotted Microstrip Patch Antenna

Bhattacharyya Kaustubh, Thangjam Rupanda, Goswami Sivaranjan, Sarmah Kumaresh, Baruah Sunandan

International Journal of Electronics and Telecommunications

2019

Vol. 65, No. 3

339--345

This paper presents a novel complementary CPWfed slotted microstrip patch antenna for operation at 2.4 GHz, 5.2 GHz and 6.3 GHz frequencies. The primary structure consists of the complementary split ring resonator slots on a patch and the design is fabricated on FR-4 epoxy substrate with substrate thickness of 1.6 mm. The described structure lacks the presence of a ground plane and makes use of a number of circular complementary SRRs along with rectangular slots on the radiating patch. The structure provides a wide bandwidth of around 390 MHz, 470 MHz and 600 MHz at the three bands with return losses of -11.5 dB, -24.3996dB and -24.4226 dB, respectively. The inclusion of the rectangular slots in the CSRR based slot antenna with stairecase structure improved the performance with respect to return loss.