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The translational formula for vector spherical harmonics [1-5] is derived in a very simple and straightforward manner using only a few well known results in the irreducible spherical tensor theory [13-15] and recursion relations of spherical Bessel and Hankel functions.
This paper introduces an ultra-low voltage open loop VCO-based ADC with background calibration for ultra-low power applications. A novel calibration scheme is proposed to calibrate the nonlinear voltage-to-frequency tuning curve of the VCO. A replica VCO is used to compute the correction coefficients and the corrected values are stored in a lookup table. The proposed calibration method is at least...
We introduce the Slepian transverse vector spherical harmonics (TVSH). Unlike the classical TVSH, they are orthogonal over a given truncated spherical surface and the orthogonality constants can be computed. We apply the Slepian TVSH to the problem of reconstructing the far field from spatially truncated near-field samples and show that the far field can be reconstructed accurately over the entire...
Pass-band insertion loss in low-pass filters implemented in monolithic technologies is mainly limited by the Q of the inductor coils. Furthermore, the size and cost are dominated by the coils. For these reasons, most circuits used in filters of this type are of low order with a minimum number of coils. This paper describes a low pass filter using a bridged-tee architecture to implement a 5th order...
In this paper, a new space vector current control scheme for shunt active power filters is introduced with a three-level neutral point-clamped voltage source inverter as well as a standard two-level voltage source inverter. Then, the proposed control is compared with the other space vector current control method to evaluate inherent advantages and drawbacks of the control schemes. The proposed control...
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