scispace - formally typeset
Search or ask a question
Author

Vijay Chakole

Bio: Vijay Chakole is an academic researcher. The author has contributed to research in topics: Microstrip & Analog signal. The author has an hindex of 2, co-authored 3 publications receiving 6 citations.

Papers
More filters
Proceedings ArticleDOI
03 Dec 2020
TL;DR: In this article, a 48 GHz H-Shaped slot rectangular microstrip patch antenna for 5G WLAN applications is proposed The H-shaped slot is used in rectangular patch of microstrip antenna for enhancing the antenna parameters like VSWR, Reflection coefficient, Gain, Bandwidth.
Abstract: In this paper a 48 GHz H-Shaped slot rectangular Microstrip patch antenna for 5G WLAN applications is proposed The H-shaped slot is used in rectangular patch of Microstrip patch antenna for enhancing the antenna parameters like VSWR, Reflection coefficient, Gain, Bandwidth The proposed antenna is designed to achieve the industrial standards for 5G WLAN application Microstrip patch antenna is gaining popularity due to its thin planner profile They can be easily mounted on the planner surface of space born application such as aircrafts, missiles In this antenna design reflection coefficient, VSWR are comes out to be -2544 dB, 111 respectively for the frequency 48 GHz In this paper the proposed antenna is designed with the microstrip line feeding

10 citations

Proceedings ArticleDOI
03 Dec 2020
TL;DR: In this paper, an automatic real-time system for automated car parking is proposed This system is implemented with the help of internet of things (IOTs) IOT generally exchanges information or data between the two physical devices Arduino Uno is a microcontroller used in proposed system, main use of Arduino in the proposed system is to provide platform to communicate digital devices and interactive objects that can sense and control physical devices.
Abstract: In the current decade we are facing parking problem with the advancement in the technology The population in urban cities is dense due to which lots of vehicles are running on road leads to parking problem, traffic problem World is facing new challenge of Car parking It is observed that one million of vehicles consumes oil on daily basis In this paper, An automatic real-time system for automated car parking is proposed This system is implemented with the help of internet of things (IOTs) IOT generally exchanges information or data between the two physical devices Arduino Uno is a microcontroller used in proposed system The main use of Arduino in the proposed system is to provide platform to communicate digital devices and interactive objects that can sense and control physical devices The proposed system is implemented with the help of Arduino Uno board for car parking and Node MCU to connect parking area with web or internet The proposed system incorporated with an infrared sensor in each slot for getting information about vacancy position of parking slot The user book parking slot well in advance, all the necessary information is available on server Every user has exclusive username and password In case any misuse happened then the system will alert the responsible person

10 citations

Proceedings ArticleDOI
16 Apr 2015
TL;DR: The design of high speed FLASH ADC using clocked digital comparator with 4-bit resolution is described using multiplexer based Decoder and simulated with the help of Tanner-EDA tool in TSMC 0.18 μm CMOS technology.
Abstract: Analog to Digital converter (ADC) finds the major role in Analog Circuit Design. Analog signal is characterized by the signal whose amplitude is continuously changing with respect to time while the amplitude and time is discrete in case of digital signal. This paper describes the design of high speed FLASH ADC using clocked digital comparator with 4-bit resolution. Analog signal is characterized by the signal whose amplitude is continuously changing with respect to time. The Clock Digital Comparator (CDC) is designed in TSMC 0.18 µm CMOS technology with supply voltage of 1.8 V. The length of transistor is fixed and depending upon the width of transistor, internal references voltages are generated in the range of 0.653 to 1.02 V. The proposed 4-bit flash ADC using CDC is designed using multiplexer based Decoder and simulated with the help of Tanner-EDA tool in TSMC 0.18 µm CMOS technology.

4 citations

Journal ArticleDOI
TL;DR: This project performs the face recognition and face detection algorithms, to produce the computer systems the ability to find and recognize human faces fast and precisely in live videos so that the systems can be used in marking attendance.
Abstract: Abstract: The face is the identity of someone. The tactic to appear out this physical feature has seen an exquisite change since the advent of the image processing method. The attendance is taken in every school, college and library. The regular method for attendance is teachers calling student name & marking attendance. Nowadays, AI has been highly explored for computer vision applications[1]. So, we use the concept of neural network in Face – recognition for automatic attendance marking systems. In this project, we perform the face recognition and face detection algorithms, to produce the computer systems the ability to find and recognize human faces fast and precisely in live videos so that the systems can be used in marking attendance. Keywords: Face detection, Python, Computer Vision, Attendance marking system, Image processing

1 citations


Cited by
More filters
Journal ArticleDOI
TL;DR: A miniaturized standalone LF magnetoelectric transmitting/receiving antenna pair with integrated magnetic bias to significantly improve the operation range by 360% and may be a promising candidate for IoT applications.
Abstract: Low frequency(LF) communication systems offer significant potential in internet of things(IoT) applications due to their low propagation loss and long transmission range. However, traditional LF electrical antennas are too bulky for IoT. Due to their small dimensions, magnetoelectric mechanical antennas are promising, however, the state of art magnetoelectric antennas either have bulky external magnetic bias or have limited operation range. In this paper, we present a miniaturized standalone LF magnetoelectric transmitting/receiving antenna pair with integrated magnetic bias to significantly improve the operation range by 360%. As the operation principle of the antenna is based on mechanical resonance, its dimension is reduced by four orders of magnitude compared with an electrical antenna counterpart. The transmitting and receiving antennas are the same in structure and dimensions: they are both composed of magnetostrictive Terfenol-D and piezoelectric PZT laminate with dimensions of $38\times 12\times19.4$ mm3. The integrated magnetic bias significantly reduces the dimension compared with magnetoelectric antennas with external bias. Performance measurement demonstrates that a maximum operation distance of 4 m is achieved without DC magnetic bias, while maximum operation distance with DC magnetic bias is 9 m, which is significantly improved by 225%. Compared with the spiral LF antenna presented in prior study, the radiation efficiency of the magnetoelectric antenna is enhanced by 17.96 times, resulting in 360% operation distance improvement from 2.5m at an input power of 4.5W to 9m at an input power of 2.03W. The LF magnetoelectric mechanical antenna pair may be a promising candidate for IoT applications.

8 citations

Proceedings ArticleDOI
05 Jun 2021
TL;DR: In this paper, a lightweight rectangular microstrip patch antenna with high gain and low cross-polarization characteristics for 5G wireless applications is designed using a slotted feed line by proximity coupled feeding and defected ground structure techniques.
Abstract: A lightweight rectangular microstrip patch antenna with high gain and low cross-polarization characteristics for 5G wireless applications is designed using a slotted feed line by proximity coupled feeding and defected ground structure techniques. The proposed model operates in the sub-6GHz (f=3.5GHz) band, with a narrow band of 3.5GHz (210 MHz). The design's dimensions are (43.36×35×1.575) mm3. The radiation efficiency of the antenna is improved by using defected ground structure and slotted strip to increase bandwidth, gain, efficiency, and reduce return loss. The simulation results show a 6.62 dB realized gain and high performance of 89%. Reflection coefficient (S11) and voltage standing wave ratio in this antenna configuration are -21.8 dB and 1.17 dB, respectively, with a -52.4 dB of low cross-polarization.

6 citations

Proceedings ArticleDOI
27 Sep 2021
TL;DR: In this article, an investigation of a dome-shape patch antenna for EMI wireless sensor purpose is presented, where the antenna has been deformed into three forms to investigate its performance when it is worn by user.
Abstract: Microstrip antenna is a popular planar antenna which is used in wide applications, including for EMI wireless sensor. It has small form factor and can be made from unique shapes. This paper presents an investigation of a dome-shape patch antenna for EMI wireless sensor purpose. It has two main structures which are the dome structure and the lower part structure. Some simulations have done to verify this antenna design performance such as its return loss, gain, and radiation pattern. It shows that the dome size contributes to the antenna frequency center while the lower part affects the return loss and bandwidth of the antenna. The antenna has been deformed into three forms to investigate its performance when it is worn by user. Overall, the deformation simulation results indicate there is no significant change regarding the initial design.

4 citations

Proceedings ArticleDOI
04 Mar 2016
TL;DR: This work has been intended towards modification of Quantum Voltage Comparator (QVC) in a 4 bit flash ADC design which results in the reduction of linearity along with noise and the 2×1 multiplexer based decoder in ADC increases the speed of the circuit.
Abstract: Analog to Digital Converter (ADC) is an essential part of a mixed signal circuit design, which acts as a bridge between naturally occurring analog signals and digital signals. It has been a continuous effort of the researchers to reduce or keep the noise constant along with the level of advancement made in the field of mixed signal circuit design to increase the speed. This work has been intended towards modification of Quantum Voltage Comparator (QVC) in a 4 bit flash ADC design which results in the reduction of linearity along with noise. The 2×1 multiplexer based decoder in ADC increases the speed of the circuit. QVC is a cascading of two differential comparators as a single comparator with systematically varying sizes of NMOS pair, which eliminates the resistor ladder circuit in a conventional flash ADC. In this work, the modified QVC based flash ADC works on a single input voltage. It has been simulated in GPDK 180 nm CADENCE VIRTUOSO platform with a supply voltage of 1.8 V. This proposed flash ADC design results in a significant drop in noise, yielding an SNR value of 25.4 dB with a sampling rate of 5.12 GS/s with a power consumption of 4.19 mW.

3 citations

Journal ArticleDOI
TL;DR: In this article , two types of massive 5G MIMO antennas are presented, which are used depending on the applications at sub-6 GHz bands and the most recent structures of 5G base station antennas that support mMIMO are introduced.
Abstract: Massive multiple-input multiple-output (mMIMO) is a wireless access technique that has been studied and investigated in response to the worldwide bandwidth demand in the wireless communication sector (MIMO). Massive MIMO, which brings together antennas at the transmitter and receiver to deliver excellent spectral and energy efficiency with comparatively simple processing, is one of the main enabling technologies for the upcoming generation of networks. To actualize diverse applications of the intelligent sensing system, it is essential for the successful deployment of 5G—and beyond—networks to gain a better understanding of the massive MIMO system and address its underlying problems. The recent huge MIMO systems are highlighted in this paper’s thorough analysis of the essential enabling technologies needed for sub-6 GHz 5G networks. This article covers most of the critical issues with mMIMO antenna systems including pilot realized gain, isolation, ECC, efficiency, and bandwidth. In this study, two types of massive 5G MIMO antennas are presented. These types are used depending on the applications at sub-6 GHz bands. The first type of massive MIMO antennas is designed for base station applications, whereas the most recent structures of 5G base station antennas that support massive MIMO are introduced. The second type is constructed for smartphone applications, where several compact antennas designed in literature that can support massive MIMO technology are studied and summarized. As a result, mMIMO antennas are considered as good candidates for 5G systems.

1 citations