Active textile antennas in professional garments for sensing, localisation and communication

New wireless wearable monitoring systems integrated in professional garments require a high degree of reliability and autonomy. Active textile antenna systems may serve as platforms for body-centric sensing, localisation, and wireless communication systems, in the meanwhile being comfortable and invisible to the wearer. We present a new dedicated comprehensive design paradigm and combine this with adapted signal-processing techniques that greatly enhance the robustness and the autonomy of these systems. On the one hand, the large amount of real estate available in professional rescue worker garments may be exploited to deploy multiple textile antennas. On the other hand, the size of each radiator may be designed large enough to ensure high radiation efficiency when deployed on the body. This antenna area is then reused by placing active electronics directly underneath and energy harvesters directly on top of the antenna patch. We illustrate this design paradigm by means of recent textile antenna prototypes integrated in professional garments, providing sensing, positioning, and communication capabilities. In particular, a novel wearable active Galileo E1-band antenna is presented and fully characterized, including noise figure, and linearity performance

Applications of Graphene at Microwave Frequencies

In view to the epochal scenarios that nanotechnology discloses, nano-electronics has the potential to introduce a paradigm shift in electronic systems design similar to that of the transition from vacuum tubes to semiconductor devices. Since low dimensional (1D and 2D) nano-structured materials exhibit unprecedented electro-mechanical properties in a wide frequency range, including radio-frequencies (RF), microwave nano-electronics provides an enormous and yet widely undiscovered opportunity for the engineering community. Carbon nano-electronics is one of the main research routes of RF/microwave nano-electronics. In particular, graphene has shown proven results as an emblematic protagonist, and a real solution for a wide variety of microwave electronic devices and circuits. This paper introduces graphene properties in the microwave range, and presents a paradigm of novel graphene-based devices and applications in the microwave/RF frequency range

The Future of High Frequency Circuit Design

The cut-off wavelengths of integrated silicon transistors have exceeded the die sizes of the chips being fabricated with them. Combined with the ability to integrate billions of transistors on the same die, this size-wavelength cross-over has produced a unique opportunity for a completely new class of holistic circuit design combining electromagnetics, device physics, circuits, and communication system theory in one place. In this paper, we discuss some of these opportunities and their associated challenges in greater detail and provide a few of examples of how they can be used in practice

Application of computational physics within Northrop

An overview of Northrop programs in computational physics is presented. These programs depend on access to today's supercomputers, such as the Numerical Aerodynamical Simulator (NAS), and future growth on the continuing evolution of computational engines. Descriptions here are concentrated on the following areas: computational fluid dynamics (CFD), computational electromagnetics (CEM), computer architectures, and expert systems. Current efforts and future directions in these areas are presented. The impact of advances in the CFD area is described, and parallels are drawn to analagous developments in CEM. The relationship between advances in these areas and the development of advances (parallel) architectures and expert systems is also presented

An Efficient Beam Steerable Antenna Array Concept for Airborne Applications

Deployment of a satellite borne, steerable antenna array with higher directivity and gain in Low Earth Orbit makes sense to reduce ground station complexity and cost, while still maintaining a reasonable link budget. The implementation comprises a digitally beam steerable phased array antenna integrated with a complete system, comprising the antenna, hosting platform, ground station, and aircraft based satellite emulator to facilitate convenient aircraft based testing of the antenna array and ground-space communication link. This paper describes the design, development and initial successful interim testing of the various subsystems. A two element prototype used in this increases the signal-to-noise ratio (SNR) by 3 dB which is corresponding to more than 10 times better bit error rate (BER)

Towards the Formalization of Fractional Calculus in Higher-Order Logic

Fractional calculus is a generalization of classical theories of integration and differentiation to arbitrary order (i.e., real or complex numbers). In the last two decades, this new mathematical modeling approach has been widely used to analyze a wide class of physical systems in various fields of science and engineering. In this paper, we describe an ongoing project which aims at formalizing the basic theories of fractional calculus in the HOL Light theorem prover. Mainly, we present the motivation and application of such formalization efforts, a roadmap to achieve our goals, current status of the project and future milestones.Comment: 9 page

The impact of personality trait on the relationship of emotional intelligence and self-esteem

Fundamental science of psychology often rooted in diversity theory that touching reality of human and humanity. Theoretical solution alone may not be able to unlock the psychological issues because it is closely related to affective, cognitive and human behaviour in the workplace. In this study, the issues in the workplace are referring to personality, emotional intelligence and self-esteem of employees. The specific purpose of this study was to test the effect of extraversion personality as a moderator towards the relationship of emotional intelligence and self-esteem of employees. A total of 196 civil servants in the Local Authority (LA) have been selected as respondents. Measurement tools that used is Eysenck Personality Questionnaire-Revised Short Form (EPQR-S), Emotional Intelligence Self-Description Inventory (EISDI), and Rosenberg Self-Esteem Scale (RSES). The data was analysed by using the hierarchical regression analysis. The finding shows that the two hypotheses are accepted. From this analysis as well, there was a moderating effect of extraversion personality on the relationship between emotional intelligence (perception and appraisal of emotion, and understanding emotions) with self-esteem of employees. The most important finding shows that extraversion personality serves as moderator when the relationship between emotional intelligence and self-esteem are enhanced if extraversion were on a high level. This is compared with the low levels of extraversion personality that causing on relationship of emotional intelligence with self-esteem more weaker

The impact of personality trait on the relationship of emotional intelligence and self-esteem

Fundamental science of psychology often rooted in diversity theory that touching reality of human and humanity. Theoretical solution alone may not be able to unlock the psychological issues because it is closely related to affective, cognitive and human behaviour in the workplace. In this study, the issues in the workplace are referring to personality, emotional intelligence and self-esteem of employees. The specific purpose of this study was to test the effect of extraversion personality as a moderator towards the relationship of emotional intelligence and self-esteem of employees. A total of 196 civil servants in the Local Authority (LA) have been selected as respondents. Measurement tools that used is Eysenck Personality Questionnaire-Revised Short Form (EPQR-S), Emotional Intelligence Self-Description Inventory (EISDI), and Rosenberg Self-Esteem Scale (RSES). The data was analysed by using the hierarchical regression analysis. The finding shows that the two hypotheses are accepted. From this analysis as well, there was a moderating effect of extraversion personality on the relationship between emotional intelligence (perception and appraisal of emotion, and understanding emotions) with self-esteem of employees. The most important finding shows that extraversion personality serves as moderator when the relationship between emotional intelligence and self-esteem are enhanced if extraversion were on a high level. This is compared with the low levels of extraversion personality that causing on relationship of emotional intelligence with self-esteem more weaker