This article presents a novel wideband bandstop filter using a half-mode corrugated substrate integrated waveguide (HM-CSIW) coupled with hexagonal ring resonators (HRRs). The HM-CSIW is designed to operate at the TE10 mode with a cut-off frequency of 22 GHz. The device is fed with integrated digitated capacitor (IDC) in microstrip feed to achieve a full DC-bias. A reconfigurable bandstop behavior has been reported with the introduction of HRR defects within the CSIW. A simulated insertion loss < 1 dB is shown for the passband of the HM-CSIW with a rejection > −30 dB for the stop-band at 26.5 to 33.5 GHz.

This paper presents designing and analysis of microstrip patch antenna at 900 MHz frequency for aviation applications. Comparative analysis is presented on the basis of geometry of patch of antenna, rectangular, circular and triangular. Patch is used to compare the results. Inset feed is used due to which proposed antenna achieves size reduction. Antennas are designed on FR4 material with dielectric constant 4.2 and thickness 1.6 mm. The different performance parameters such as return loss, gain and bandwidth of these antennas are compared. From the results obtained, the rectangular dual band patch achieved the highest percentage bandwidth performance at 900 MHz while the triangular patch achieved the highest gain and smallest size. Wireless transmission method used to verify the transmission and receiving process.

A new passive active multijunction antenna (PAM) has been designed and fabricated for ADITYA-U tokamak [1]. The PAM antenna has the ability to couple lower hybrid waves (LHW’s) into the plasmas near cut-off densities. The coupling of LHW’s depends on plasma density and its profile near the mouth of the antenna. To determine these plasma parameters, experimentally, an X-mode reflectometry system has been designed. The reflectometery system is designed to operate in the frequency range from 26 GHz to 36 GHz and would cover a density range from ~1x10 m (i.e. Scrap Of Layer (SOL) density ) to 5x10 m with a toroidal magnetic field of 1.5 Tesla at major radius (R0) of the tokamak. The total frequency band is swept in 100 microsecond, as a trade-off between technological difficulties and to avoid fast density fluctuation for better phase tracking. The ADITYA reflectometer is built to operate in frequency modulation continuous mode (FW-CM) or at a fix frequency mode for density fluctuation study. The reflectometery consists of two parts, i.e., the transmitter and the receiver. The transmitter mainly consists of microwave source, amplifier, a single sideband modulator (SSBM), frequency multiplier and a horn antenna to launch X-mode into the plasma. Similarly the receiver end consists of horn antenna, amplifier, mixer and de-modulator. In the de-modulator section, a quadratic demodulation (IQ) is used to extract in-phase and quadraturephase information from the reflected signal. Finally, an ADC with 12 bit resolution will convert the analog signal in to a digital signal which will be processed through a FPGA based data acquisition system. Two sectorial E plane horn antennas are chosen so that one may be used for launching microwave power into the plasma and the other for receiving the reflected signal from the plasma. The limited space available near the radial port which houses both, the PAM antenna and the horn antenna, accounts for the choice of sectorial E-plane horn antenna. A microwave broad band window is designed to interface the horn antennas and the microwave hardware as the antennas will be placed inside vacuum vessel of ADITYA-U tokamak.

Bacterial pericarditis is a rapidly progressive and highly fatal infection, and is often diagnosed postmortem in half of the cases. Even with drainage and antibiotics, the mortality rate is high. Gram-positive cocci, specifically Streptococcus penumoniae, have been the most common cause of bacterial pericarditis with a preceding primary site of infection. Following the introduction of antibiotics in the 1940s and more recently the pneumococcal conjugate vaccine, the incidence has drastically decreased.We describe an extremely rare case of primary streptococcus pneumoniae purulent pericarditis that presented with cardiac tamponade. The patient was successfully treated with broad-spectrum antibiotics and urgent pericardiocentesis.Due to the high mortality rate with purulent pericarditis, a high index of suspicion is needed when acute pericarditis is suspected for early diagnosis to instate appropriate therapy with antibiotics and drainage.

Image blur is general artifacts in digital image processing and it is hard to avoid.Image enhancement or deblurring is necessary to reduce blur amount from the image.Image deblurring is a process used to reduce the blur quantity in a blurred image and make the degraded image into sharpened and clear image.When deblurring images, cause of blurring is very important to increase the effect of the deblurring to get good result.While working with real-time images, we may not have the knowledge of the reason of blurring.There are various sources why image gets blurred like motion blur, camera shake, out of focus blur, etc.This paper carried out performance comparison of different techniques to diminish the effects of above mentioned causes of blurring.The analysis and comparison was conceded out based on types of blur, Peak Signal-to-Noise Ratio (PSNR), Mean Square Error (MSE) and Execution time.

VANET is a major challenge now a days due to the high speed mobility, reliability and fast communication time are also major challenge in vehicular communication then our work proposed to the network coding. Random linear network coding is a particularly decentralized approach to the multicast problem. Use of random network codes introduces a non-zero probability however that some sinks will not be able to successfully decode the required sources. One of the main theoretical motivations for random network codes stems from the lower bound on the probability of successful decoding. So in Network coding instead of directly forwarding packet, here packets will be mixed and encoded over finite field like GALOIS field.