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For multi-Gbps indoor applications 38 GHz millimeter wave (mm Wave) technology offers the high potential. In this paper, where devices are battery-constrained we apply the millimeter wave technology for delivery of multimedia content in indoor network. Initially this paper schedules the concurrent transmission by the help of vertex coloring algorithm. Then, for each timeslot, consider the power allocation...
This paper presents a method for carrying out fast inversion of Hermitian positive definite complex matrices using real inverse operations and suggests its application to computation of MIMO LMMSE Detector. The proposed method reduces the number of real operations required by an existing method by 8 times asymptotically. It also talks about possible extension of the proposed method to arbitrary complex...
This paper presents 5th order Low-Pass (LP) and High-Pass (HP) Ladder filters employing two Voltage Differencing Current Conveyors (VDCCs), four resistors and five capacitors. The workability of the proposed circuits has been tested using SPICE simulations.
This paper evaluates the novelty aspects of symmetric high-k spacer (SHS) trigate wavy FinFET over conventional FinFET. The SHS wavy FinFET is a hybrid device, which combines three significant and advanced technologies i.e., ultrathin body (UTB), Wavy channel FinFET, and high-k spacer on a single silicon on insulator (SOI) platform to enhance the device performance without increasing the chip area...
We report an another unconventional growth of dense network Single Wall Carbon Nanotube (SCNTs) and Highly aligned Carbon Nanotubes using Cu(NO3)2 and CuO as catalyst. A systematic study for effects of oxygen on catalytic quality of Copper and on CNTs growth also studied. All reactions are performed in atmospheric pressure in thermal CVD chamber. The CNTs are characterized using HRSEM and micro-Raman...
A novel probe feed dual polarized pentagon slot shaped planar antenna is designed and proposed supporting wireless local area network (WLAN) and worldwide interoperability for microwave access (WiMAX) applications simultaneously. Structure comprises of pentagon shaped radiating element along with scaled down slot cut on center of patch, having overall compact size of 40×40mm2. The conventional pentagon...
Ground reaction force is amongst the prominent parameters used for gait analysis. It gives an approximation of the projection of body's centre of mass on the ground. This paper reports a low cost, wireless, wearable sensor module, developed for estimating centre of foot pressure. Postural sway recording can be done using this sensor module. Wireless data transfer and compact module packaging makes...
The design of a wideband aperture coupled log periodic dielectric resonator antenna array is investigated for X band application. Aperture coupled feeding is used in this design to minimize losses. The proposed design uses five cylindrical elements and shows a wide bandwidth of about 36%, covering the frequency range 9.23 GHz to 13.23 GHz with a peak gain of 9.28 dBi. Parametric study for bandwidths...
This paper proposes an ultra-low voltage charge pump circuit working at an input voltage as low as 100 mV. Most of the micro energy sources work typically in the voltage range of 100 mV. The proposed circuit provides an output voltage of 1 V which is sufficient enough to power low energy-consuming portable devices, biomedical applications such as body sensor networks and remote area monitoring wireless...
As the technology progressing, WSN (Wireless sensor network) become a suitable choice for data gathering and monitoring applications. Power consumption is an important consideration for the design of sensor network. As the WSN is powered by small batteries and deployed in remote location where it is not possible to charge and change these batteries, so it is very important to reduce the energy consumption,...
The present work reports the fabrication and optical characterization of n-TiO2 thin film prepared by sol-gel method. Sol-gel solution of TiO2 was prepared using titanium isopropoxide and hydrochloric acid as a precursor and stabilizer, respectively. As-deposited, TiO2 thin film on p-Si and glass substrates have the thickness of ∼120 nm. The surface morphology and crystallinity of the as-deposited...
As the technology of memory on Systems-on-Chip (SoC) is shrinking, the compact devices and embedded systems are emerging, so the low power consumption is very essential for the VLSI system design. Static Random Access Memory (SRAM) contains more than 70% area of the SoC. A standard 6T SRAM cell has two bitlines for read and write operation thus it consumes more power. There are many techniques for...
In this paper, we optimized the performance of wireless local area networks, MAC and physical layer behavior plays a vital role in wireless network. In the presence of interference, optimizing physical layer parameters carrier sense threshold, preamble detection, physical layer capture and MAC layer queue length. We demonstrate in our simulation study the effect of high rate traffic for node density...
In this paper, we have investigated the structural and optical characteristics of ZnO thin film grown through Radio frequency magnetron (RF) sputtering technique on n-Silicon substrate. The surface morphological characteristics of the sample have been investigated by using Scanning electron microscope (SEM) and Atomic force microscope (AFM), which confirms the growth of uniform and smooth ZnO film...
In this paper, the design of a tri band slot antenna for L1 band of Global Positioning System (GPS), and two bands i.e. 3.5 GHz and 5.4 GHz of Worldwide interoperability for Microwave access (WiMAX) is proposed. The antenna consists of a rectangular slot with an area of 48 × 18 mm2. To provide different band of frequency, a T-shaped feed patch and an inverted T-shaped stub is used. The tri band is...
This paper presents a method for designing of low power dissipation, low phase noise and high oscillation frequency based three stage Current Starved VCO (CS-VCO). In this design approach, 3-inverter stages are cascaded to achieve an optimal power dissipation of (7.48508 mW) for fundamental frequency of (3.9955 GHz). The simulation results depict that such VCO has linear voltage-frequency characteristics...
The efficiency of a parallel plate capacitor for the detection of moisture concentration in concrete structure is proposed in this paper. As the presence of moisture in the concrete structure deteriorate the health of the structure, therefore its presence should be correctly examined. In this paper, the effect of moisture on the electrical properties such as impedance, capacitance, phase angle, dissipation...
Most of the microwave communication systems have requirement of power dividers that are essential for power splitting and combining operations. This paper presents a structure and methodology for designing a rectangular waveguide Folded E plane Tee. The structure proposed has the advantage of less area consumption as compared to a conventional waveguide Tee. The paper also presents design equations...
This paper presents Self cascode based current mirror (CM) using FGMOS which is used in low voltage and mixed mode circuits. The proposed CM has high output impedance of 108 TΩ and the bandwidth is obtained as 1.67 GHz which is further increased to 2.27 GHz by using resistive compensation technique in FGMOS for bandwidth extension. The proposed CM is used for Voltage Controlled Current Source (VCCS)...
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