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The extinction paradox states that a perfectly electric conducting target which is large compared to the wavelength removes from the incident radiation exactly twice the amount of power it can intercept by its geometrical cross section area. In this paper, the extinction paradox is generalized to include temporally dispersive material parameters with finite values of the permittivity and the perme
The high Q-factor (low bandwidth) and low efficiency make the design of small antennas challenging. Here, convex optimization is used to determine current distributions that give upper bounds on the antenna performance. Optimization formulations for maximal gain Q-factor quotient, minimal Q-factor for superdirectivity, and minimum Q for given far-field are presented. The effects of antennas embedd
Popular Abstract in Swedish Det sägs att ögonen är själens spegel och att man genom att titta på någons ögon kan säga något om personens sinnesstämning och hur personen mår. Forskning kring ögonrörelser har visat att man genom att mäta ögats rörelser kan tolka hur den visuella informationen som vi tar in genom ögonen har behandlats. Eftersom det är hjärnan som styr muskulaturen runt ögat som i sinThis doctoral thesis has signal processing of eye-tracking data as its main theme. An eye-tracker is a tool used for estimation of the point where one is looking. Automatic algorithms for classification of different types of eye movements, so called events, form the basis for relating the eye-tracking data to cognitive processes during, e.g., reading a text or watching a movie. The problems with t
This paper presents a new Hardware (HW) im- plementation proposal for Discrete Fourier Transform (DFT) based channel estimators. The presented algorithm uses the high time correlation property of the channel estimates to reduce the complexity and the power consumption by utilizing a lower number of bits for the FFT in the channel estimator, compared to a traditional approach. The idea is that the
Socialization is an undertheorized concept representing a challenge to constructivist approaches to European integration. Although references to the capacity of international institutions to shape actor preferences are common, the processes through which actors are thought to be socialized are not yet specified within the field. Once resolved, this challenge will turn out to strengthen the constru
Partitioning large high-speed globally synchronous ASICs into locally clocked blocks reduces clock skew problems and if handled correctly it also reduces the power consumption. However, to achieve these positive effects, the blocks need on-chip clock generators having properties such as small area and low power consumption. Therefore, a low power, high frequency, small area digitally controlled on
