The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
With the drift of consumers to the E-cloud marketplaces based on different service offerings, waiting time is of great importance to cloud service consumers and also the source of competitive advantage for cloud providers. Keeping customers waiting due to poor level of service leads to service degradation which in turn leads to breach of Service Level Agreement; and this may incur additional cost...
This paper is presented about a system of recording student attendance using fingerprint identification that allows students to monitor student attendance to class is a true electronically. It can reduce the presence of fraudulent students who are now mostly done by the students and the system can also reduce problems such as the presence of the missing paper and easily damaged. With this system can...
An impedance modeling for a unit cell of the circular loop and square loop FSS structure is presented in this paper. The unit cell of the circular loop and square loop FSS are designed and simulated using the CST Microwave Studio software at 2.4 GHz based on industrial, scientific and medical bands (ISM). The design FSS structure consists of FSS structures placed on the FR4 and glass. The reflection...
This paper presents a system for hearbeat detection using microwave Doppler technique. Using a vector network analyzer, a microwave system is tested for the detection of the heartbeat signal at a distance of 1 feet from a person. The proposed system shows the ability of detecting the heartbeat signals with the possibility of tuning the radiated power. Measurements are performed at 10dbm, 0dbm, −10dbm,...
In this paper we report the detection of sub-THz radiation at 220 GHz by using 0.35 µm Metal Oxide Semiconductor Field Effect Transistor (MOSFET). The observation of photoresponse are measured against gate voltage with a drain current effect at room temperature. The measured photoresponse is a superposition of a generally increasing response with a decrease in VGS coupled with a small peak approximately...
This study investigated the effect of continuous tones vibrant on focus ability among teenagers. Three vibrant levels as perceived as Medium, Loud but Comfortable and Very Loud were examined. In 6 subjects, the results showed that the amplitude of N1 waves have reduced significantly when stimulated by Medium sound as compared to Loud but Comfortable and Very Loud stimulation. Insignificant reduction...
This paper presents the analysis of bending optical waveguide based on effective refractive index and beta propagation constant. The various sample of core waveguide size such as 3 ×3, 7×7 and 9×9 is taken and measure with radius curvature of optical waveguide. The data collection based on Maxwell equation derivation and modeling electromagnetic field as a engine behind of graphical user interface...
Oil, gas and coal currently constitute 94% of the total energy generation mix but the increasing demand of electricity, there is a need to be greater diversification of power supply sources in order to tackle the forthcoming electricity crisis. Several studies have started to investigate the feasibility of salt as sources to generate electric. However, the study on the characteristic of salt as electric...
A Smart Detector Database using Radio Frequency Identification (SDDR) is a cyclist tracking device. This device can be applied in the biggest race competition. Today, the monitoring system used unable to trace not arrive cyclist. As a solution, SDDR will detect cyclist that through the checkpoints and the profile about that cyclist would be displayed at the organizers PC monitor at the last point...
This project is about designing a Radio Frequency Identification (RFID) Elevator. The objective of this project is to develop a security and safety system based on the RFID application. There are two part that will covered in this project which are research about RFID and development of RFID to elevator buttons. Today, the security system for building provided in the market does not implement to elevator...
This paper presents the overall design of Home Automation System (HAS) with low cost and wireless remote control. This system is designed to assist and provide support in order to fulfil the needs of elderly and disabled in home. Also, the smart home concept in the system improves the standard living at home. The main control system implements wireless Bluetooth technology to provide remote access...
In this paper, presented an analysis and designed structure for Ultra-Wide Band (UWB) band pass filter that was carried out using a composite microstrip line with −10 dB and fractional bandwidth of more than 92%. This designed of band pass filter is suitable for ultra-wide band application system. The proposed filter was designed based on 7th order Chebeyshev with 0.5 dB ripple which operate between...
In this paper, presented an array of 2 × 2 UWB Bowtie antennas for Ultra Wide Band (UWB) mobile communication is being proposed. The antenna designs have been simulated using CST Microwave Studio. The antenna covers the UWB spectrum from 4.0 to 10.6 GHz, and had a return loss below than 10 dB throughout the entire band. A compact antenna area of 56.4 × 76.0 mm2 is obtained. The material used is FR-4...
Optical network that apply wavelength division multiplexing (WDM) is currently widely used in existing telecommunications infrastructures and is expected to play a significant role in next generation networks and the future Internet supporting a large variety of services having very different requirements in terms of bandwidth, latency, reliability and other features. The purpose of this paper is...
This paper presents a design of an ultra wide-band (UWB) horn antenna for microwave imaging radar system. The key purpose of the study is to design a horn antenna which is used in medical imaging system. The proposed antenna operates within 3.1–10.6 GHz as it is the band allocated for medical industry usage. The antenna known as a directional antenna which is supported by rectangular waveguide. The...
This paper discussed the study on the circular polarized patch antenna by using double circle slot technique in single patch and X-polarized patch antenna. The operating frequency for the proposed antenna is 2.4GHz with 29.86MHz of bandwidth and return loss is −34.85dB. The antenna had been designed and simulated using CST Microwave Studio simulation software. The circular polarization (CP) operation...
In PCB holes drilling process, the time taken for a task completion heavily rely on the distance travels by the drill bit of the CNC machine. In order to minimize the distance traveled by the drill bit, Firefly Algorithm can be used. The proposed model applies Firefly Algorithm to search for the optimized path in PCB holes drilling process. Each agent's position represented a possible path that can...
This paper describes the design of low noise amplifier using enhancement mode technology for WLAN front-end applications. Typical LNA designed for the IEEE802.1a standard is required to operate with low noise, high gain and exhibit low noise figure. The design uses feedback, and balanced topology to enhance the performance and to achieve the design goal. The LNA is designed operate at 2.4GHz, noise...
Simulating a signal propagation of wireless cognitive network has been widely accepted by researchers in order to come out with three-dimensional (3D) representation data display. Instead of using primitive way to understand the behavior of signal propagation, 3D visualization of wireless networking could also help researchers to study the limitation and exploration of wireless cognitive network deeply...
In this paper we present the detection of sub-THzradiation at 220 GHz by using 0.35 µm AMS Metal Oxide Semiconductor Field Effect Transistor (MOSFET). The design procedure and experimental setup are shown in order to design and characterize the MOSFETs photo response. The experiment and observation of photo response are measured against gate voltage with a drain current bias detraction at room temperature...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.