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Linear modelling of novel InGaAs/InAlAs/InP pHEMT for low noise applications is substantial to the future transistors that will operate in high speed and low noise conditions. The novel pHEMT is constructed by sandwiching two different materials together with different lattice constants, for instance InGaAs and InAlAs in order to form a heterojunction in between. However, InP is only utilised to be...
HEMT is a GaAs based field effect transistor that retains higher cutoff frequency compared to silicon based transistors. Alternatively, pHEMT enhance the performance of the HEMT in term of leakage, current conduction and the cutoff frequency of the device. The heterostructure of pHEMT improve the performance two-dimension electron gas (2DEG) in the channel layer. With these, pHEMT is believed could...
In this paper, we present a new simulation model, called as sum-of-linear-frequency-modulation (SOLFM) model, based on the sum-of-cisoids (SOC) model. The new model has ability to simulate non-stationary fading channels under time-variant scattering environments. We also propose an effective parameter computation method, which can reproduce time-variant statistical properties of real-word channels...
This paper showcases the work done to create an alternative surface impedance transmission line implemented using a 3D tetrahedral meshing frequency eigenmode solver. The work was performed based on a complementary asymmetric split ring (CASR) unit cell to identify its resonance characteristic and relevant dispersion diagram at 5.9 GHz. By using this CASR singularly into a guided transmission line,...
This paper contains a microstructure photonic optical fiber based on a circular cladding with asymmetric core for high birefringence. Simulation results show a high birefringence of 2.78×10−2 at 1550 nm operating wavelength. The proposed fiber also has dispersion compensation properties in a wide range of wavelengths covering S to L communication bands. The proposed design can obtain a negative dispersion...
Recently, the dispenser system has been widely used for holding the electronic manufacture of many devices. It also need an accurate control of the amount of fluid and volume from the semi-conductor. This paper represents the modeling of screw pump dispenser using dc motor used Simulink™ from MATLAB. In the screw pump dispenser there is a very important motor which depends upon the volume, is used...
Acute leukemia is one of the critical disease that requires immediate treatment due to the rapid progression and accumulation of the cancerous cells. In recent years, image processing techniques had been explored to enhance the diagnosis of acute leukemia. However, microscopic image captured from the light microscope usually has poor quality due to the capability of the camera and improper operation...
After some studies on the HMLP neural network output equation, it was found out that parts of the equation resemble matrix multiplication operation. Therefore, an approach to calculate the output equation of the HMLP using matrix multiplication method was proposed. The proposed approach was simulated and compared with another approach to calculate HMLP output using loops. The result proved that the...
Piezoelectric materials can be categorized into either pyroelectric or non-pyroelectric materials. PZT-5A is one of the piezoelectric materials that also functions as a pyroelectric material. In the piezoelectric materials, electrical energy is generated by the coupling of mechanical and electrical energy when stress is applied onto it. However, for pyroelectrics, temperature changes are the mechanism...
This paper presents the design and optimization of high quality (Q) factor inductors using Micro Electro-Mechanical Systems (mEMs) technology for 10GHz to 20GHz frequency band. Two inductors have been designed with square and circular topologies. Inductors are designed on Silicon-on-Sapphire (SOS) because of its advantages including high resistivity and low parasitic capacitance. The effects of various...
Compartment model is used for drug delivery explanation in pharmacokinetics. The conventional method to calculate the drug concentration is a numerical method. In the case of multi compartment model is high complexity that difficult to solve by numerical method. This article presents the model complexity reduction using model optimization by Gramian-based input/output balancing of state-space realizations...
Literature evidences have demonstrated the effectiveness of the sampled t-way test suite for defect detection in software testing. The main task in implementing t-way testing strategies is constructing best possibility test case. There are several methods that have been proposed but none of them can be claimed to be the best result because t-way are considered as NP-hard problem. In this paper, the...
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