Biswajeet Mukherjee

Bio: Biswajeet Mukherjee is an academic researcher from Indian Institute of Information Technology, Design and Manufacturing, Jabalpur. The author has contributed to research in topics: Dielectric resonator antenna & Wideband. The author has an hindex of 13, co-authored 75 publications receiving 589 citations. Previous affiliations of Biswajeet Mukherjee include Indian Institutes of Technology & Indian Institutes of Information Technology.

Wideband Circularly Polarized Rectangular Dielectric Resonator Antennas Using Square-Shaped Slots

Abstract: Two wideband single fed circularly polarized (CP) rectangular dielectric resonator antennas (DRAs) comprising square-shaped slots are proposed. Initially, two wideband linearly polarized DRAs are designed with high aspect ratio to simultaneously excite and merge two resonant modes, ${\rm TE}_{{111}}$ and ${\rm TE}_{{113}}$ . Then, CP is obtained by the technique of perturbation in the form of four and two square slots along the diagonal. The slots excite two orthogonal modes with same magnitude and quadrature in phase. Two antenna prototypes are experimentally verified. The measured impedance bandwidths are 48% (4.7–7.7 GHz) and 41% (4.6–7 GHz) in conjunction with the 3-dB axial-ratio bandwidth of 11.5% (5.7–6.4 GHz) and 24% (4.7–6 GHz).

Hemispherical Dielectric Resonator Antenna Based on Apollonian Gasket of Circles—A Fractal Approach

Abstract: A novel, compact hemispherical dielectric resonator antenna based on Apollonian Gasket of circles is proposed. The Apollonian Gasket is a fractal generated from triplets of circles, where each circle is a tangent to the other two. The dielectric material used is Rogers TMM 10, which is a ceramic thermoset polymer composite material having a dielectric constant of er = 9.2. The fractal geometry offers a wide impedance bandwidth of around 1.68 GHz (47%) for S11 <; -10 dB at a resonant frequency of 3.6 GHz. Experiments have been conducted up to the third iteration of fractal. Two modes have also been investigated which show presence of both like and like modes. For like mode, the antenna radiates with a gain of around 6.5 dBi whereas for like mode, the antenna radiates in the broadside direction with a high gain of 8.5 dBi.

A Compact Wideband Rectangular Dielectric Resonator Antenna using Perforations and Edge Grounding

Abstract: A compact wideband rectangular dielectric resonator antenna (RDRA) is investigated and presented Perforations improve bandwidth by lowering down the quality factor The perforations are an array of symmetrical square-shaped slots drilled uniformly on the RDRA On choosing the optimal size of slots and distance between two consecutive slots, the fundamental ${\rm TE}_{111}$ mode of the RDRA is preserved This aids in making the geometry compact by employing edge grounding The coaxial probe acts like a monopole that further improves bandwidth by matching, monopole, and higher-order ${\rm TE}_{131}$ -like mode of the RDRA in the frequency band (272–43 GHz) The proposed geometry offers a wide impedance bandwidth of 56% for ${{ S}_{11}} The measured results show that the radiation efficiency of the proposed antenna is above 85% for the complete bandwidth with the stable radiation pattern

A review of the recent advances in dielectric resonator antennas

Abstract: This paper presents a comprehensive review of the state of art techniques and geometries which have been explored in the areas of Dielectric Resonator Antennas (DRA). With the evolution of first re...

MIMO Antenna for Bluetooth, Wi-Fi, Wi-MAX and UWB Applications

Abstract: A Multiple Input Multiple Output (MIMO) antenna consisting of two 90 - angularly separated semicircular monopoles with steps for Bluetooth, Wi-Fi, Wi-MAX and UWB applications is proposed. Initially, an array of two coplanar circular monopoles with element separation of 25mm is investigated. In this conflguration, mutual coupling is < i5dB and < i10dB over 2GHz{3GHz and 3GHz{10.6GHz, respectively. Mutual coupling is reduced by using 90 - angularly separated semicircular monopoles. With semicircular conflguration, though the mutual coupling is improved, impedance bandwidth is reduced due to reduction in electrical length. A step like structure is introduced in the semicircular monopoles, and ground plane is modifled and extended between the two elements to improve the impedance bandwidth and mutual coupling. Impedance bandwidth from 2.0GHz{10.6GHz with S21 < i20dB and i14dB is achieved over 3.1GHz{10.6GHz and 2.0{3.1GHz respectively. The antenna is fabricated using 46mm £ 37mm RT Duroid substrate. Measurement results agree with the simulation ones. Radiation patterns are stable, and correlation coe-cient is < 0:02 over 2.0{10.6GHz.

Dielectric Resonator Antennas: Basic Concepts, Design Guidelines, and Recent Developments at Millimeter-Wave Frequencies

Abstract: An up-to-date literature overview on relevant approaches for controlling circuital characteristics and radiation properties of dielectric resonator antennas (DRAs) is presented The main advantages of DRAs are discussed in detail, while reviewing the most effective techniques for antenna feeding as well as for size reduction Furthermore, advanced design solutions for enhancing the realized gain of individual DRAs are investigated In this way, guidance is provided to radio frequency (RF) front-end designers in the selection of different antenna topologies useful to achieve the required antenna performance in terms of frequency response, gain, and polarization Particular attention is put in the analysis of the progress which is being made in the application of DRA technology at millimeter-wave frequencies

Wideband and UWB Antennas for Wireless Applications: A Comprehensive Review

Abstract: A comprehensive review concerning the geometry, the manufacturing technologies, the materials, and the numerical techniques, adopted for the analysis and design of wideband and ultrawideband (UWB) antennas for wireless applications, is presented. Planar, printed, dielectric, and wearable antennas, achievable on laminate (rigid and flexible), and textile dielectric substrates are taken into account. The performances of small, low-profile, and dielectric resonator antennas are illustrated paying particular attention to the application areas concerning portable devices (mobile phones, tablets, glasses, laptops, wearable computers, etc.) and radio base stations. This information provides a guidance to the selection of the different antenna geometries in terms of bandwidth, gain, field polarization, time-domain response, dimensions, and materials useful for their realization and integration in modern communication systems.

Dual-band MIMO dielectric resonator antenna for WiMAX/WLAN applications

Abstract: In this study, a novel dual-band multiple-input multiple-output (MIMO) rectangular dielectric resonator antenna (DRA) for Worldwide interoperability for microwave access (WiMAX) (3.4–3.7) GHz and wireless local area network (WLAN) (5.15–5.35) GHz applications is proposed and investigated. The design operates at fundamental TEδ11 x, TE1δ1 y and higher order TEδ21 x, TE2δ1 y modes, excited through two coaxial probes, symmetrically placed adjacent to the DRA. A compact design is achieved by stacking a high permittivity material. The obtained impedance bandwidth at 3.6 GHz is 9.97% and at 5.2 GHz is 8.88%. Measured antenna gain through both ports at 3.6 GHz is 5.7 dBi and at 5.2 GHz is 6.61 dBi, respectively. Isolation achieved at 3.6 GHz is −13 dB and at 5.2 GHz is −16 dB, respectively. Co- and cross-polarisation, radiation efficiency, diversity gain, envelope correlation and mean effective gain of the proposed design are measured. Results show that the proposed design is suitable for use in MIMO WiMAX/WLAN applications.

Multi-Band RF Planar Sensor Using Complementary Split Ring Resonator for Testing of Dielectric Materials

Abstract: In this paper, an attractive multi-band RF planar sensor, suitable for non-destructive testing of dispersive materials, is proposed. The proposed sensor is based on a number of complementary split ring resonator (CSRR) unit cells etched in the ground plane of the microstrip line. Each CSRR unit cell can be represented by a narrow band reject filter with its center frequency corresponding to the resonant frequency of the respective CSRR cell. The proposed technique is used to design the two, three and four band microwave sensors operating at 1.5 GHz, 2.45 GHz, 3.8 GHz, and 5.8 GHz. The distance between the two adjoining CSRRs is minimized for each case without appreciably increasing the inter-cell coupling effect. The transcendental equations required for determining the complex permittivity of the material under test in terms of the resonant frequency are derived from the numerical data obtained using the electromagnetic solver, the CST studio. These numerical equations are then used to obtain the dielectric properties of various test samples, which are measured using the vector network analyzer. The detailed air gap analysis is also performed for checking the accuracy of the designed planar sensor under the real situation. The proposed sensors are fabricated on 0.8 mm thick FR4 substrates using the standard photolithography technique. A number of standard samples are tested using the fabricated sensors in multiple frequency bands, and a good agreement between the obtained results and the data available in literature shows the applicability of the proposed scheme.