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With the advancements in optical and satellite communications for high speed long range data transmissions, serrated antennas plays a vital role. In this work we have designed a Edge Serrated Microstrip Patch antenna used for these applications has been modeled on FR4 substrate as a dielectric medium which has a relative permittivity value of 4.4. The proposed antenna was resonating at two different frequencies in L & S band Microwave frequency ranges. This antenna was fed with coaxial feeding and was designed in a software HFSS.
- One of the most important and promising branches of Artificial Intelligence (AI) is Machine Learning (ML),which strive to make a machine intelligent by “learning” from the data. Information Retrieval is also a popular and predominant technique having as one of its application, the ubiquitous Search Engine. Search Engine optimization (SEO) has seen remarkable advancements during the recent years. The objective of this paper is to optimize the existing predictive search mechanism by incorporating pattern based Machine Learning techniques, the association with a Semantic Database, Natural Language Processing of search query to produce more relevant predictions to the user. The main intention is to provide diversified but apt, intelligent predictions for both the diversified set of users whose domain of search queries is not constrained, as well as for the dedicated researchers whose domain will be confined, coupled with an optimal balance between the Response times, Relev
This paper presents an improved design of voltage controlled oscillator (VCO) utilizing the three differential cell CMOS inverters for forming the ring oscillator. The differential cell reduces the power supply fluctuations impact on the oscillator jitter while the negative feedback from frequency to voltage converter reduces the jitter at high frequencies. Finally the proposed model is designed using CMOS 0.18um foundry technology and simulated using P-Spice software. The result shows that the proposed design improves the jitter attenuation at different offset frequencies up to 40dB
Rapidsoft Systems has extensive domain knowledge when it comes to wireless and mobile application solutions. We like to build smart phone applications for cellular operators and handset manufacturers, game developers, as well as ring tone developers. We develop solutions using J2ME, Brew, iPhone, Palm Pre, Windows Mobile, Flashlite and Symbian platforms, that allow rapid deployment and sophisticated user functionality. We are one of the few mobile software development companies that can work across all major mobile platforms available today.
This paper presents a systematic approach to designing negative-resistance and Colpitts oscillators using p-HEMT transistor. Various models such as, common source and common gate configuration in negative-resistance oscillators, common source series feedback in Colpitts oscillator is selected to analyze the output power and stability presented by the p-HEMT transistor. These oscillators are designed at 2.45 GHz frequency for which we find application in Bluetooth and Wi-Fi. In this paper, these designs are studied and tested, with their results analyzed below. Further, study proved that the Colpitts oscillator designed gave more output power and stability than the negativeresistance oscillators
In this paper a hexagonal patch microstrip antenna with hexagonal slot behaves as a wide band monopole antenna having great return loss. It is designed for 1.1194-2.7078 GHz frequency band with wide bandwidth of 1.5884 GHz and return loss of - 73.63dB. A hexagonal patch with etched ground plane monopole antenna with hexagonal Slot is fabricated on the glass epoxy (FR4 lossy) of dielectric substrate with relative permittivity (εr) of 4.3, thickness of 1.6mm, loss tangent of 0.02 with a ground plane, fed with a 50Ω rectangular microstrip feed line. This prototype antenna having an omnidirectional radiation pattern is measured for frequency range of 0-3 GHz. The novelty of this antenna is that hexagonal patch with hexagonal slot gives it uniqueness in design and also getting a bandwidth approx 1.6 GHz with -73dB Return loss is big achievement in 0-3 GHz frequency Band itself. As the antenna is designed only in 0- 3GHz band, having all such properties in one antenna p
Measurement of bulk resistance/resistivity of conducting polymers is very common and an important requirement. Conducting polymers are semiconductors and four probe measurements are needed to avoid errors due to contact resistance and spreading resistances. However, in a device it is convenient to make two probe measurements rather than four probe measurement. It has been shown here that the bulk resistance of a thick film can be measured in the presence of rectifying contacts, using two probe method by measuring the impedance of the film beyond a critical frequency. The metalfilm contact has been modeled as a diode to explain the behavior.
When you are done with your studies and step into the next phase in life, you would want a great job domain to enjoy a handsome salary. Singapore is a country that is considered to be one of the major business hubs in Asia.
Although the ACFI funding model may not be perfect, and there are industry concerns, feedback has indicated that: • There has been an increased in access to pain management interventions • The ACFI provides some flexibility in frequency, duration & complexity of interventions • There are incentives for facilities to improve resident outcomes • Industry monitoring occurs, with representation across several health disciplines • The scope of physiotherapy in aged care has grown since the introduction of the ACFI • There can be encouragement of rehabilitation