Ankan Bhattacharya

Effect of different slots in a design of microstrip antennas

A signal layer rectangular microstrip antenna embedded with open-ended and close-ended slots is presented in this paper. Two open-ended slots are introduced inside the ground plane as well as inside the patch to excite the antenna with different resonant mode. In another configuration, two close-ended slots are introduced both inside the ground plane and patch to observe the variation in resonant frequency and bandwidth of the antenna. The proposed structure showed promising results in perspective of return loss, gain, efficiency and directivity for the applications wireless communication system including IEEE 802.11a WLANs application that allocate channels between 5.15 to 5.825 GHz.

UWB monopole antenna design in a different substrate using Sierpinski Carpet Fractal Geometry

In this paper an Ultra Wideband Monopole antenna is designed for various WLAN and WiMAX applications. The antenna is designed using CST Microwave Studio SuiteTM. Iterative patch structures are considered to obtain optimized result. Also obtain optimized result using different substrate. Sierpinski Carpet Geometry is applied in design of the patch structure. The finalized monopole is proposed to be applicable in the WLAN bands (5.2/5.8 GHz) and WiMAX bands (3.5/5.5 GHz). The antenna exhibits a gain of 2.8 dB, 3.6 dB, 3.8 dB and 3.9 dB at frequencies 3.5 GHz, 5.2 GHz, 5.5 GHz and 5.8 GHz respectively. The antenna exhibits a wide bandwidth of 3.5 GHz to 7.5 GHz respectively.

Application of RCGA in Optimization of Return Loss of a Monopole Antenna with Sierpinski Fractal Geometry

This paper presents a monopole antenna design using Sierpinski triangle fractal geometry with an improved frequency response. The antenna response has been optimized using the genetic algorithmic approach. Triangular slots have been incorporated in the ground plane section, which has an effect on antenna return loss. A triangular shaped patch with Sierpinski triangle geometry has been placed above Beryllia (99.5%) substrate having an electrical permittivity of 6.5. The resonant frequency peak of proposed antenna is exactly at 2.45 GHz with an impedance bandwidth of 650 MHz. The antenna finds its application in 2.4 GHz (2.41–2.48 GHz) WLAN band with a maximum realized gain of 3.16 dBi at the resonating frequency.

A compact wideband monopole antenna designed for wireless applications

A Compact Wideband Monopole Antenna, designed for wireless applications has been investigated in this paper. The antenna consists of a Radiating Patch along with a Defected Ground Plane. The proposed antenna has been compared with a similar Radiating Patch without any Defected Ground Structure (DGS) and the results have been discussed with comparison plots. The proposed antenna covers a frequency range of 2.4 GHz to 6.0 GHz with an impedance bandwidth about 85.71 %. The proposed antenna finds its application in IEEE 502.11a WLAN band (5.15-5.85 GHz), IEEE 502.11b WLAN band (2.4-2.5 GHz) and IEEE 802.16 WiMAX band (3.2-3.5 GHz).

A novel wideband spade shaped monopole antenna with ring geometry for wireless applications

In this paper a novel wideband spade-shaped monopole antenna with ring geometry is designed for several wideband microwave applications. The antenna is designed in CST Microwave Studio Suite™ environment. Round Slot Geometry is applied in design of the patch structure. The finalized monopole is proposed to be applicable in the microwave frequency band from 4.2 GHz to 12.2 GHz. The antenna exhibits a gain of 3.4 dBi, 3.5 dBi, 3.7 dBi, 3.8 dBi, 4.6 dBi and 1.9 dBi at frequencies 5 GHz, 5.2 GHz, 5.5 GHz and 5.8 GHz, 10 GHz and 12 GHz respectively. The antenna exhibits a wide bandwidth of 8 GHz (4.2 GHz to 12.2 GHz).

An UWE monopole antenna for WLAN and WiMAX applications

In this paper an Ultra Wideband Monopole antenna is designed for various WLAN and WiMAX applications. The antenna is designed using CST Microwave Studio Suite™. Iterative patch structures are considered to obtain optimized result. The finalized monopole is proposed to be applicable in the WLAN bands (5.2/5.8 GHz) and WiMAX bands (3.5/5.5 GHz). The antenna exhibits a gain of 2.9 dB, 3.7 dB, 3.8 dB and 4.0 dB at frequencies 3.5 GHz, 5.2 GHz, 5.5 GHz and 5.8 GHz respectively. The antenna exhibits a wide bandwidth of 3.5 GHz to 7 GHz respectively.