Handbook of Radioactivity Analysis

One of main issues of developing big parking space for shopping complexes, office complexes
and other types of building that requires large parking space is to notify the visitors of occupied and nonoccupied
parking space. Most of the visitors might spending up to 30 to 45 minutes just to find an empty
parking space. In most recent technology, some parking lot system offered a system that could
automatically count when the car entering the empty car space and blocking an infrared signal thus
notify the system to count for it. However, this type of sensors actually has an increase of budgeting in
order to install and to be maintained. In this project, we have developed a unique solution by providing
cost effective solution by using Zigbee technology in parking lot system technology. Instead of using and
maintain cable that need to be installed at the ceiling of the parking lot, we developed a system that use
wireless technology of Zigbee and it could notify the visitors of empty and non-empty parking lot.

Wireless based Smart Parking System using Zigbee

Development of a heart rate detection algorithm using a non-contact doppler radar via signal elimination

The widespread adoption of wireless devices in all aspects of the public's daily lives and the growing demand for professionals in the wireless communications field demonstrate the need for in-depth wireless engineering education. This increased demand triggered many academic institutions to start offering courses and programs in this area. As a part of our previous work, we provided a platform for students to keep up with the improvements in the wireless communications field and gain hands-on experience using Software Defined Radios (SDR). However, existing coursework and curricula in wireless networking is challenged by the fact that it is difficult to intuitively visualize how the nodes in the network are operating in a way that is linked to the everyday world. In this paper, we introduce visualizations of wireless lab exercises using an Augmented Reality (AR) mobile app. The AR app is designed and built for a wide selection of wireless communications courses, where we are able to visualize links between wireless nodes, antenna radiation patterns, and data throughput. In this paper, we experimentally assess and present the benefits of introducing AR-based visualization tools into wireless communications courses at both the undergraduate and graduate level in terms of student interest and change in skill level.

Wireless communications engineering education via Augmented Reality

Microwave Semiconductor Devices

This paper represents design of 3GHz hairpin filter with Defected Ground Structure (DGS) for Microwave Imaging application by using Advanced Design System (ADS) software and FR4 substrate. Hairpin filter is one of the most popular microwave filters because of its compactness. Thus, to enhance its performance detected ground structure is implemented to the filter. The filter is designed to operate at 3GHz frequency with fractional bandwidth of 6.67%. This project is designed and simulated by using Advenced Design Structure (ADS) and all the calculation is done on LineCALC the ADS tools. This project uses FR4 board as the substrate and it is fabricated by undergo etching process. Improvement is should be done to enhance the filter performance.

3GHz hairpin filter with Defected Ground Structure (DGS) for Microwave Imaging application

In this paper, presented a single double-sided circular disc bow-tie antenna for Ultra Wide Band (UWB) communication is being proposed. The antenna designs have been simulated using CST Microwave Studio. The antennacovers the UWB spectrum from 3.1 to 10.6 GHz, and had a return loss below than 10 dB throughout the entire band.A compact antenna area of 30.0 × 60.0 mm2 is obtained. The material used is FR-4 epoxy glass substrate that has dielectric constant, e r = 4.4 and the dielectric thickness; h = 1.6mm. The antenna also gives omnidirectional radiation characteristics with reasonablegain values over the same frequency band.

An analysis of UWB double sided circular disc bow-tie antenna

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 would like to address the requirement and the potential of using 3D representation to visualize properly the wireless cognitive network. We also performed preliminary test of our 3D visualization system using OpenGL graphic library to visualize the propagation of signal travelling in specific room with several medium. The test has been conducted in order to understand the requirement of wireless cognitive network in 3D visualization before the actual system is built.

Wireless network visualization in 3D virtual environment framework

This paper describes the design of Low-pass filter using bowtie Defected Ground Structure (DGS). The designing of low-pass filter begins from lumped element in which the filter will be built using capacitors and inductors before converted to open and short circuited stub. The low-pass filter using bowtie Defected Ground Structure (DGS) is required to operate at 10 GHz for radar application. As a comparison, the design of different size and quantity of bowtie Defected Ground Structure (DGS) were analyzed to identify the better performance of the low-pass filter. The design of this filter had been simulated by using schematic and EM Simulation in Agilent Advanced Design System (ADS) software.

An analysis of low pass filter using bowtie Defected Ground Structure (DGS) at 10 GHz for radar application

This paper presents comparison on IV Characteristics analysis between Silicon and InGaAs PIN Photodiode. PIN Photodiode is a structure that is consists of positive region, intrinsic region and negative region (PIN). The thick intrinsic regions are a difference to a normal PN Photodiode. PIN Photodiodes practical as Photodetectors, Attenuators and Radio frequency (RF) switches. The simple, low cost yet rugged structure of PIN Photodiodes is an advantage in Photodiode technology. These papers are separated in several section consists of the basic principle, characteristics, advantages and the recent technologies of PIN Photodiode. There will be a specific section on comparison between Indium Gallium Arsenide (InGaAs) PIN Photodiode with Silicon (Si) PIN Photodiode.

H. A. Sulaiman

Papers

3GHz hairpin filter with Defected Ground Structure (DGS) for Microwave Imaging application

An analysis of UWB double sided circular disc bow-tie antenna

Wireless network visualization in 3D virtual environment framework

An analysis of low pass filter using bowtie Defected Ground Structure (DGS) at 10 GHz for radar application

Comparison on IV characteristics analysis between Silicon and InGaAs PIN photodiode