Abstract: This paper demonstrates the design and performance analysis of circular patch antenna in the UWB frequency range (3.1-10.6GHz) using coaxial line feeding. The operating frequency is chosen to be at 3.3GHz which makes it perfectly fit for biomedical applications, especially in Wireless Body Area Network (WBAN). Several parameter calculations and performance measurements of this antenna have been computed using CST MW studio suite. The antenna is designed using a substrate of ARLON AD250 with a dielectric constant of 2.5 and Copper is used as patch material. Performance of the antenna is evaluated by measuring centre frequency, VSWR, return loss, radiation pattern, directivity, gain and total efficiency.

Keywords: UWB, Coaxial line-fed, WBAN, Return loss, Directivity.

Title: Design and Performance Analysis of UWB Linearly Polarized Coaxial Fed Circular Patch Antenna for Biomedical Applications

Author: N.Sheshaprasad

International Journal of Engineering Research and Reviews

ISSN 2348-697X (Online)

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Abstract: Generating a swirl flow in the flow field is widely employed passive heat transfer augmentation or intensification technique. In present work, twisted tapes are inserted into the inner pipe side of Counter flow Double Pipe Heat Exchanger for creating a swirl flow and thus Enhancing the Heat Transfer. Twisted tapes of different twist ratios with 30o, 45o, 60o and strip insert (i.e. without any twist) are employed to enhance the Heat Transfer. Turbulent swirl flow with forced convection is considered for experimental study. For different twist ratios, mass flow rate of cold fluid in inner pipe side is varied, by maintaining the constant mass flow rate in the annulus side. Experimental data is validated using available correlations. The results show that, for mass flow rate of 8 LPM the enhancement in Heat Transfer is 55.69% compared with that of plain tube and corresponding Pressure Drop is only 20%.

Keywords: Heat Transfer Intensification, Heat Transfer Enhancement, Double Pipe Heat Exchanger, Inserts Twisted Tapes.

Title: REVIEW ON INCREASING THE HEAT TRANSFER RATE OF DOUBLE PIPE HEAT EXCHANGER USING TWISTED TAPES

Author: Jayesh Gautam, Rohit Dixit

International Journal of Engineering Research and Reviews

ISSN 2348-697X (Online)

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Abstract: The purpose of the current study is to find the optimal setting of welding parameters in TIG welding of Super Duplex Stainless Steel (2507).Normally SS2507 is used in heavy applications such as heat exchangers and chemical tankers, so stellite 6 is used as a coating material to improve the strength of the material in those applications. The strength and the chemical properties can be analysed using some of the testing methods such as tensile test, scanning electron microscopytest, X-ray diffraction test, energy dispersion X-rays test. By using these tests the strength SS207 can be analysed.

Keywords: TIG welding, SS2507, Stellite 6, Tensile strength.

Title: Improving the Joint Strength of SS2507 Using Stellite 6 as Filler Material through TIG Welding

Author: R.Pradeep kumar, S.Vimal kumar, N.Suryamoorthy, N.Vignesh kumar, S.Saran kumar

International Journal of Engineering Research and Reviews

ISSN 2348-697X (Online)

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Abstract: Air transportation is now in an accelerated growth, to make it reliable and cost-efficient several researchers are going on. In this paper, the design of an aircraft which is assisted by a panel for take-off and landing by using magnetic levitation phenomenon has been proposed. In this design, superconducting magnets and electromagnets are used for levitation and propulsion during take-off respectively, speed and position sync technology by modulating Vehicular Ad-hoc Network (VANET) for landing purpose. An unmanned Air vehicle of 100cm span with T-Tail have been designed and manufactured as per standards of ASME. Due to the levitation of aircraft by superconducting magnets Gross weight of the vehicle reduced approximately 6% was recorded. A Magnetic Panel Runway of length 3m have been designed and tested for 10m/s as take-off velocity. We conjectured that this concept will reduce fuel consumption during take-off, accidents during landing, further a shorter runway length can be achieved.

Keywords: Magnetic levitation, VANET, electromagnet, superconducting magnets.

Title: DESIGN OF MAG-LEV PANEL TO ASSIST TAKE-OFF AND LANDING OF AIRCRAFT

Author: M. Priyadharshan, B. Ranjith sethupathy, S. Dinesh kumar, M. Venugopal

International Journal of Engineering Research and Reviews

ISSN 2348-697X (Online)

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Abstract: The performance of spectrum sensing based on cooperative relaying is investigated. It is found that multiple number of cognitive relay nodes improve spectrum sensing performance. It is shown that the optimal sensing time of CR reduces with the increasing number of relay nodes. Reduction in optimal sensing time results in increase of the optimal throughput of the CR significantly. Impact of SNR on optimal throughput and on sensing time is noticeable. If SNR increases, the normalized optimal throughput increases and optimal sensing time reduces for a fixed number of relay nodes.

Keywords: SNR, CR, BER, Spectrum Sensing.

Title: RELAY BASED COOPERATIVE SPECTRUM SENSING TECHNIQUE USING ENERGY DETECTOR IN COGNITIVE RADIO NETWORK

Author: Tanuja T. Dange, A.A. Shirolkar

International Journal of Engineering Research and Reviews

ISSN 2348-697X (Online)

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Abstract: Examination plays a vital role in education system. During examination period there may be shortfall of (question paper, answer booklet) staff alteration and other need of students such as water, graph etc. For these complications the monitoring person has to depend on man power to pass this information to the examination wing. This process takes more time and students are not fulfilled their need at right time. To overcome the above complication, a remote keypad module is given to the monitoring person. When monitoring person press any of those keys the message is sent to examination wing via Wi-Fi through raspberry pi and notification will be displayed in the monitor. So the exam coordinator can take responsibility to solve the complication. At the same time the message will also be passed to the exam coordinator through GSM. The main concept of the project is to provide smart communication between examination hall and examination wing.

Keywords:  Raspberry pi, Wi-Fi, GSM.

Title: DESIGN AND DEVELOPMENT OF SYSTEM FOR VIGILANCE ON EXAMINATION

Author: B.Theeban chakkaravarthy, A.J.Saleema thusneem, Z.Roshnara begum, V.Subbulakshmi, K.Kavibharathi

International Journal of Engineering Research and Reviews

ISSN 2348-697X (Online)

Research Publish Journals