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Papers by Sunandan Bhunia

AEÜ. International journal of electronics and communications, May 1, 2024

International journal of communication systems, Apr 28, 2024

Besides lot of advantages of Microstrip Patch Antenna some severe limitations like narrow bandwid... more Besides lot of advantages of Microstrip Patch Antenna some severe limitations like narrow bandwidth, low power output, low gain hindered it to use in some application specially where wideband, high gain & high power is essential. In modern days researchers are concentrated to overcome these limitations. The design of dual or multi-frequency patch antennas are also very much important because any one can use a single antenna instead of two or more antenna operating in the single frequency. Compact microstrip patch antenna design is also important in modern days as the area is a major constrained in the MMIC design. In this book new and novel approaches to design dual, multi-frequncy, compact and broadband microstrip patch antennas are discussed which are very new and published in different international journals by the author. This book constitutes of eight chapters among which first three chapters are about the basic concept and the last one is for major findings and future scope of work for the young researchers. Other four chapters are for novel approaches for designing different types of microstrip patch antennas.

Indian Journal of Physics, Oct 1, 2009

A novel, compact, single probe-feed square microstrip patch antenna for operation in dual frequen... more A novel, compact, single probe-feed square microstrip patch antenna for operation in dual frequency can be achieved by cutting unequal finger like rectangular slots perpendicular to the radiating edges. From the experimental results obtained, the proposed antenna is about 67% smaller compared to a traditional rectangular patch operating at the same frequency and we have got the dual frequency operation

A closely packed two-element cylindrical dielectric resonator antenna (CDRA) array is presented. ... more A closely packed two-element cylindrical dielectric resonator antenna (CDRA) array is presented. A circular patch with two annular ring-shaped slots is used to excite each CDRA. The metallic grid-shaped partial ground plane (MGS-PGP) is used beneath substrate instead of a uniform ground plane as the former helps to achieve better impedance matching. Based on the simulated data, -10 dB impedance bandwidth is noted from 5.68 GHz to 6.67 GHz. The mutual coupling between the antenna elements is noted to be less than -16.6 dB for an inter-element spacing of 4.8 mm, which is 0.090λh(λh = wavelength corresponding to the lowest operating frequency). The gain of the antenna array is above 3.97 dBi with a maximum of 5.4 dBi within its bandwidth.

Microwave and Optical Technology Letters, Nov 1, 2008

Single layer single feed dual and multifrequency patch antenna is introduced. Resonant frequency ... more Single layer single feed dual and multifrequency patch antenna is introduced. Resonant frequency can be reduced and frequency ratio can be increased by cutting unequal rectangular slots at the edge. C band and X band operation can be successfully achieved

Lecture notes in electrical engineering, 2023

Journal of Nano-and electronic Physics, 2023

Journal of Microwaves, Optoelectronics and Electromagnetic Applications

This paper suggests a slotted ground 'S'-shaped low profile planar microstrip patch antenna for w... more This paper suggests a slotted ground 'S'-shaped low profile planar microstrip patch antenna for wideband and high gain operation. The suggested antenna has physical dimensions of × ×. having a fractional bandwidth of 111% having the operating impedance bandwidth 22.55GHz (9.12 GHz to 31.67 GHz). At 19 GHz, maximum gain of 3.9 dBi is attained. An equivalent circuit model corresponding to suggested antenna is designed by ADS software and assessed with the simulated and measured antenna results. Frequency Selective Surface (FSS) of single layer has been placed at optimum position at a distance of 15 mm below the antenna for further improvement of the overall gain of the suggested antenna. Combination of suggested antenna and × FSS configuration increases peak gain to 9.4 dBi maintaining the same antenna bandwidth. The FSS unit cell of dimension. ×. ×. is used. Design of the antenna is done using commercially available electromagnetic simulator (CST Microwave Studio), and the simulated results are verified by suitable antenna measurement technique using standard microwave test bench. Given FSS integrated antenna has an overall physical volume of × × which makes it ideally suited for highgain long-range applications.

International Journal of Communication Systems, 2023

An electromagnetic band gap (EBG) coupled miniaturized tri-notched printed ultra-wideband (UWB) ... more An electromagnetic band gap (EBG) coupled miniaturized tri-notched printed
ultra-wideband (UWB) monopole microstrip antenna having dimensions of
22 mm 26 mm 1.6 mm loaded with a slot in radiating patch and a parasitic
strip in the ground plane has been presented. The proposed structure incorporates
a square-shaped metallic radiating patch with a square EBG structure adjacent
to the microstrip feed line, a U-shaped meandered slot over the radiating
element, and a U-shaped parasitic resonator at the ground plane beneath the
radiating element, to reject the C-band satellite downlink (3.7 to 4.2 GHz),
WLAN frequency band (5.15 to 5.85 GHz), and X-band satellite downlink (7.25
to 7.75 GHz) frequency bands, respectively. The designed antenna operates in
the frequency range from 3 to 11.1 GHz, with an impedance bandwidth of
8.1 GHz and a percentage bandwidth of 114%. Modification steps incorporating
into the reference antenna to achieve the desired design objectives have been
discussed, along with parametric studies. The proposed design has been simulated
using Ansys HFSS, and measurement has been taken using standard measurement
technique and compared with the simulated results.

AEU - International Journal of Electronics and Communications

Lecture Notes in Electrical Engineering, 2022

Microwave and Optical Technology Letters, 2007

when the injection input power is 0 dBm. In addition to the existing popular cross-coupled VCO-ba... more when the injection input power is 0 dBm. In addition to the existing popular cross-coupled VCO-based ILFD, the alternative ILFD prototype demonstrates the potential of complementary Hartley ILFD in high-frequency operation. ACKNOWLEDGMENT The authors thank the Staff of the Nation Chip Implementation Center (CIC) for the chip fabrication and technical supports.

International Journal of Communication Systems

International Journal of Microwave and Wireless Technologies

This article presents the design and performance analysis of a printed microstrip ultra-wideband ... more This article presents the design and performance analysis of a printed microstrip ultra-wideband (UWB) antenna consisting of the slots in the ground plane and radiating patch. A meandered S-shaped slot has been introduced on the patch and an inverted U-shaped slot has been incorporated in the ground plane to realize the band-notch effect for WiMAX (3.2–3.8 GHz) and WLAN (5.1–5.8 GHz) bands respectively. The total dimension of the proposed design is 44 × 44 mm2. The fabricated antenna exhibits wide impedance bandwidth of 10 GHz (2.4–12.4 GHz), i.e., 135% of center frequency. The design prototype is fabricated, and the measured results have good agreement with simulated values. The effects of the slots have been analyzed by simulated surface current distribution. The designed antenna shows almost omnidirectional radiation patter and stable gain. The proposed hexagonal antenna may be suitable for UWB applications removing WiMAX and WLAN bands.