Kalyan Mondal

Multiband patch antenna with modified ground plane for wireless communication systems

In this article a multi-band microstrip patch antenna is designed. The simulated results of frequency band, resonance frequency, radiation pattern and VSWR are investigated. Also effects of slots and radius of the ground plane on results are presented. The proposed antenna offers multi frequency bands of 160 MHz (2.99-3.15), 120 MHz (3.92-4.04), 150 MHz (5.23-5.38) and 1.29 GHz (6.52-7.81) at the resonant frequencies of 3.07 GHz, 3.97 GHz, 5.29 GHz, 6.73 GHz and 7.57 GHz respectively. The multi frequency bands are achieved by the introducing three unequal rectangular slots on the ground plane. The simulated results are demonstrated that, the proposed antenna offers good radiation pattern with multi frequency band.

Single feed aperture coupled circular broadband microstrip patch antenna

In this work a single feed aperture coupled broadband microstrip patch antenna is proposed for wireless communications. Two FR4 dielectric substrates of dielectric constant 4.4, thickness 1.6 mm and three metallic substrates are used. A T-shaped metallic substrate with aperture is incorporated in between two dielectric substrates. A circular patch is presented as a microstrip antenna with T-shaped ground plane. The maximum simulated frequency band of 4.39 GHz (1.57–5.96 GHz) with multi resonant frequencies at 1.67 GHz, 2.57 GHz, 4.07 GHz and 5.61 GHz are found. The percentage bandwidth of 116.62% with 1.6 dBi gain is achieved. The proposed antenna is simulated and measured using Ansoft designer software and Network analyzer for Bluetooth, WIMAX, WLAN and 2.4, 5.8 ISM band applications.

Investigation on compactness, bandwidth and gain of circular microstrip patch antenna

In this research work an investigation on compactness, bandwidth and gain of a circular microstrip patch antenna is presented. Five different microstrip patch antenna is designed using FR4 substrate with dielectric constant 4.4 and 1.6 mm thick. The frequency band, antenna gain and compactness are enhanced by introducing open ended slot on the radiating patch. The results of the antennas are presented maximum 0.8, 1.34, 0.7, 3.20 and 1.78 GHz frequency band with 45%, 57%, 46% and 86.5% compactness. The maximum simulated stable peak gain 2.3, 2.55, 3.2, 3, and 3.25 dBi is achieved. The measured percentage bandwidth of 22% (8.1–10.07 GHz) is achieved All the designed antennas are simulated by MOM base Ansoft designer software.