Aperture Field Estimation in E Plane and H-Plane T-Junctions Using Field Theoretic Analysis

Wireless Personal Communications - This paper presents method of moment based analysis of E Plane and H-Plane T-junctions to find the field distributions on different transverse and longitudinal...     

An Optimal Control Technique for Multiphase PM Machines Under Open-Circuit Faults

In this paper, an optimal control technique for n-phase permanent-magnet (PM) machines under various open circuit faults is presented. Under the fault conditions, the currents in the healthy phases are controlled to compensate phase loss and to produce the required output torque. The proposed control technique ensures continuous operation of the machines while producing minimum torque ripples and minimum stator ohmic loss. The control technique is based on the instantaneous power balance theory. To set the summation of the phase currents equal to zero, a constraint is incorporated in the derivation of the control technique. A five-phase PM machine is considered to demonstrate the proposed open circuit fault-tolerant control strategy. Simulation and experimental results are provided for validation.     

Design of a Variable Depth Axially Corrugated Horn Antenna at X-Band for Low Cross-Polarization Applications

Wireless Personal Communications - This paper presents a study of a class of iris localization algorithms in the presence of blurring. The effect of blurring is a serious problem in most image...     

Ultra-wideband,high efficiency oriented RF power amplifier using current source MIC technique for wireless monitoring of obstetrics patient

Analog Integrated Circuits and Signal Processing - This paper presents an Ultra-wideband, high-efficiency Class-E power amplifier (PA) using a current source tuner and microstrip inter-digital...     

A 8–12 GHz, 44.3 dBm RF output class FF−1 DPA using quad-mode coupled technique for new configurable front-end 5G transmitters

Analog Integrated Circuits and Signal Processing - This paper presents a high-efficiency Class $${\mathrm{FF}}^{-1}$$ DPA using the quad-mode coupled technique for new configurable front-end 5G...     

Analysis and design of wide band Microstrip-line-fed antenna with defected ground structure for Ku band applications

A wide band Microstrip antenna is proposed for Ku band applications with defected ground structure. A circular shape defect is integrated in the ground plane. A novel equivalent circuit model is proposed for Microstrip patch antenna with defected ground structure. Accurate design equations are presented for the wideband Microstrip antenna and theoretical analysis is done for the proposed structure. The proposed antenna has an impedance bandwidth of 56.67% ranging from 9.8 GHz to 17.55 GHz, which covers Ku-band and partially X-band. The antenna shows good radiation characteristics within the entire band, and has a gain ranging from 5 dBi to 12.08 dBi. Minimum isolation between co-polar and cross-polarization level of 20 dB and 15 dB is achieved in H-plane and E-plane respectively. The simulation of the proposed antenna is done on HFSS v.14, and measured results of fabricated antenna are in good agreement with the theoretical and simulated results.     

Design and Analysis of Low Noise Optimization Amplifier Using Reconfigurable Slotted Patch Antenna

Now a days, the communication between different nodes in a Mobile Ad hoc Network (MANET) is not guarded. Various encryption mechanisms are used to protect the communication between nodes. Link failures and packet dropping due to unfaithful nodes are becoming one of the main opposition for the trusted detection of malicious nodes. A failure can occur either due to channel errors or harmful nodes in network. These attacks may have the intention of modifying the routing protocol so that the data transmission through a specific node controlled by the attacker disturbs the network topology. Thus it deteriorates the performance of network. Mutual association of dropped packets is capitalized for synthesizing the suspicious nodes in MANET. The algorithm proposed is using an efficient cryptosystem with cipher text list validator scheme and a communal auditing scheme for the validation of certificate received from individual nodes. For constructing the framework, the proposed algorithm with five phases has a network setup phase, data routing phase, communal auditing phase, error node detection phase and a data receiver phase. This framework makes the MANET node build a safe routing topology by effectively judging the harmful nodes as well as the unfaithful information accepted from supplementary nodes.     

Applicability of Cavity Modeling Technique to Analyze Complex Waveguide Structures Involving Cavity Cross Couplings

Wireless Personal Communications - In this paper, we propose modulation and coding scheme level drop scheme for LTE evolved multimedia broadcast/multicast service (eMBMS) by transmitting additional...