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Thangavelu Shanmuganantham,Deepanshu Kaushal 한국전자통신연구원 2017 ETRI Journal Vol.39 No.6
A slotted rectangular nameplate antenna design with a patch bearing the name of the first author is presented. A 6.8 mm × 26 mm × 1.6 mm substrate of FR-4 epoxy material having a relative permittivity of 4.4 and a dielectric loss tangent of 0.02 is used. Additionally, the feeding technique used is a coaxial mechanism. The standard antenna design parameters, including the reflection coefficient, bandwidth, radiation pattern, gain, directivity, and voltage standing wave radio (VSWR) for the proposed prototype are analyzed using a high-frequency structure simulator (HFSS) v-15, and are compared to the measured results. The designed structure may be considered for different satellite- and radio-determination applications at the respective resonant frequencies.
Design of LNA for WAVE Application with Different Substrate
T. Shanmuganantham,Makesh Iyer 한국전기전자재료학회 2018 Transactions on Electrical and Electronic Material Vol.19 No.5
This work deals with the design of low noise amplifi ers for WAVE (WLAN for vehicular environment) application whichoperates in 5.85–5.925 GHz frequency band considering the center frequency as 5.9 GHz. There are various substrates availablein the market that can be used for designing LNA’s and some of them are considered in this work. Out of all the substratesused, RT Duroid 5880 provides better results with a power gain of 16.423 dB and optimum noise fi gure of 0.687 dB.
Analysis of Tree-shaped slotted Impedance Matching antenna for 60GHz femtocell applications
T. Shanmuganantham,K. Bharath Kumar,S. Ashok Kumar 한국통신학회 2021 ICT Express Vol.7 No.4
Femtocell access point gives an efficient solution to furnish peak data rates in indoor wireless access systems. Propagation of the signal will get up-shot because of few considerations in advanced communication appliances. The maximum simulation reflection coefficient(S) of proposed antenna is 45.12 dB, directivity is 6.54 dBi with the efficiency of 60 % and at 60 GHz, and the measurement value of 36.35 is observed which covers the complete RADAR applications which have an unlicensed bandwidth. The proposed tree-shaped unequal slotted antenna is well suited for millimeter-wave applications because of its good bandwidth and less dimension.
Modeling and Analysis of a Multi Bossed Beam Membrane Sensor for Environmental Applications
Nallathambi Arjunan,Shanmuganantham Thangavelu 한국전기전자재료학회 2017 Transactions on Electrical and Electronic Material Vol.18 No.1
This paper presents a unique pressure sensor design for environmental applications. The design uses a newgeometry for a multi bossed beam-membrane structure with a SOI (silicon-on-insulator) substrate and a mechanicaltransducer. The Intellisuite MEMS CAD design tool was used to build and analyze the structure with FEM (finiteelement modeling). The working principle of the multi bossed beam structure is explained. FEM calculations showthat a sensing diaphragm with Mises stress can provide superior linear response compared to a stress-free diaphragm. These simulation results are validated by comparing the estimated deflection response. The results show that, thesensitivity is enhanced by using both the novel geometry and the SOI substrate.
Design of Implantable CPW Fed Monopole Antenna for ISM Band Applications
S. Ashok Kumar,T. Shanmuganantham 한국전기전자재료학회 2014 Transactions on Electrical and Electronic Material Vol.15 No.2
An implantable CPW fed monopole antenna embedded into human tissue is proposed for ISM band biomedicalapplications. The proposed antenna is made compatible for implantation by embedding it in an alumina ceramicsubstrate (□r=9.8 and thickness=0.65 mm). The proposed antenna covers the ISM band of 2.45 GHz. The radiationparameters, such as return loss, E-Plane, H-Plane, are measured and analyzed, using the method of moments. Theproposed antenna has substantial merits over other implanted antennas, like low profile, miniaturization, lowerreturn loss, and better impedance matching and high gain.
Design and Performance of Textile Antenna for Wearable Applications
S. Ashok Kumar,T. Shanmuganantham 한국전기전자재료학회 2018 Transactions on Electrical and Electronic Material Vol.19 No.5
In this paper, a novel co-planar waveguide fed textile antenna is to be designed for wearable applications. The designedantenna has the design parameters of the size is 90 mm × 70 mm × 1.57 mm 3 and the substrate is Jeans cloth whose dielectricconstant is 1.6. The proposed antenna resonates at 2.45 GHz with a return loss of − 19 dB. The proposed antenna has a gainof 2 dBi and VSWR is around 1.1 at the resonating frequency. This logo shaped antenna can be radically used in militaryjackets, because of its compatibility, fl exibility in structure design and shape, excellent performance at diff erent angles,human safety, miniaturization, power consumption etc.
Design of Octagonal CPW-Fed Broadband Millimeter Wave Antenna for 5G Applications
S. Ashok Kumar,T. Shanmuganantham,D. Sindhaniselvi,A. L. Sharon Giftsy 한국전기전자재료학회 2023 Transactions on Electrical and Electronic Material Vol.24 No.2
A CPW-fed antenna is designed with octagonal shaped patch operating at a broadband millimeter-wave frequency from 24.8 to 48.8 GHz for wireless 5G applications. The antenna was design with dimensions of 20 × 20 × 1.6 mm 3 are made with low cost FR4 loss free substrate with dielectric constant (ε r ) of 4.3 using the CST Microwave Studio software. Simulated radiation pattern and return loss < -10 dB is achieved at a frequency of 28 GHz, 30.78 GHz, 38 GHz, 41.64 GHz and 44.16 GHz with the gain of 5.1 dB, 6.39 dB, 6.59 dB, 7.48 dB and 7.04 dB. The voltage standing wave ratio (VSWR) < 2 at (24.8–48.8) GHz which indicates that these frequencies operated by the antenna has minimum reflection.
Design of CPW-Fed Inverted Six Shaped Antenna for IoT Applications
Srinivasan Ashok Kumar,T. Shanmuganantham 한국전기전자재료학회 2020 Transactions on Electrical and Electronic Material Vol.21 No.5
In this paper a novel coplanar waveguide fed antenna with inverted six shaped confi guration having wide band attributes, proposed and designed on a FR4 substrate. The dimensions of the designed antenna are 54 mm × 38 mm. Few rounded corners system is used in this design to improve the bandwidth and gain of proposed antenna. Being a simple antenna, it makes it extremely reasonable for the future generation of Internet of Tings applications. A well-ordered outline process is completed to get an upgraded plan for good impedance matching in the required band. The Reflection coefficients along with the current densities at various phases of the design process are discussed and analyzed to get a decent understanding into the proposed antenna plan. The proposed antenna exhibits stable radiation, having low back lobes and low cross polarization and having greatest gain 6 dBi.
Modeling and Analysis of a Multi Bossed Beam Membrane Sensor for Environmental Applications
Arjunan, Nallathambi,Thangavelu, Shanmuganantham The Korean Institute of Electrical and Electronic 2017 Transactions on Electrical and Electronic Material Vol.18 No.1
This paper presents a unique pressure sensor design for environmental applications. The design uses a new geometry for a multi bossed beam-membrane structure with a SOI (silicon-on-insulator) substrate and a mechanical transducer. The Intellisuite MEMS CAD design tool was used to build and analyze the structure with FEM (finite element modeling). The working principle of the multi bossed beam structure is explained. FEM calculations show that a sensing diaphragm with Mises stress can provide superior linear response compared to a stress-free diaphragm. These simulation results are validated by comparing the estimated deflection response. The results show that, the sensitivity is enhanced by using both the novel geometry and the SOI substrate.
Design of Bending Antennas for Purpose of Biomedical Applications Using Novel Approach
S. Ashok Kumar,T. Shanmuganantham 한국전기전자재료학회 2021 Transactions on Electrical and Electronic Material Vol.22 No.6
In this paper, design of a flexible antenna which is used in the field of biomedical applications. This technology consists of two methods mainly i.e. 1.Magnetron sputtering method, 2.Laser ablation method. Magnetron sputtering method is use to set slight copper coating upon polyimide substrate. Secondly Laser ablation method is mainly used to incise an antenna as of copper coat. The different parameters are simulated and measured practically. The outcomes of the verified results are good and have a satisfactory response. There are many advantages such as price, momentum, elasticity over lithography process frequently used for such applications.