Results 231 to 240 of about 1,361,972 (283)

Annual report / Northwestern Mutual. 1962

open access: yes, 2011
Northwestern Mutual
core  

Robust Adaptive Beamforming Against Mutual Coupling Based on Mutual Coupling Coefficients Estimation

IEEE Transactions on Vehicular Technology, 2017
In an adaptive beamforming system, the mutual coupling effects among the array elements can seriously degrade the system performance. In this paper, we propose a robust adaptive beamforming algorithm using a uniform linear array (ULA) to mitigate the mutual coupling effects.
Zhi Zheng, Wen-Qin Wang
exaly   +2 more sources

Direction finding in the presence of mutual coupling

IEEE Transactions on Antennas and Propagation, 1991
An eigenstructure-based method for direction finding in the presence of sensor mutual coupling, gain, and phase uncertainties is presented. The method provides estimates of the directions-of-arrival (DOA) of all the radiating sources as well as calibration of the gain and phase of each sensor and the mutual coupling in the receiving array. The proposed
A J Weiss, B Friedlander
exaly   +2 more sources

Mutual Coupling Calibration for Adaptive Array Based on the Mutual Coupling Grid

2019 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2019
A mutual coupling calibration method for the adaptive antenna array is proposed. The method is base on the mutual coupling grid model that is introduced to describe the mutual coupling effect of the adaptive antenna array. On the basis of the gird model, the relationship between the induced terminal voltages due to the elements in the isolated state ...
Jianzhao Tian, Yi Liang, Qiulin Huang
openaire   +1 more source

Wireless Orientation in the Presence of Mutual Couplings

2020 IEEE Radio and Wireless Symposium (RWS), 2020
Conventional microwave orientation methods based on the array antenna require high element isolation in most cases. In our work, a neural network-based microwave orientation method is proposed to avoid the interferences caused by the mutual couplings between elements.
Hao Wang 0096   +3 more
openaire   +1 more source

On the evaluation of mutual coupling between slots

IEEE Transactions on Antennas and Propagation, 1987
Analytical expressions for mutual coupling between slots embedded in a large ground plane are presented and discussed, both for piecewise-sinusoidal and for cosinusoidal field distribution. In the former an exact analytical expression has been found; in the latter various approximations based on Taylor and/or Fourier representation, have been analyzed.
MAZZARELLA, GIUSEPPE, PANARIELLO G.
openaire   +3 more sources

On the Dynamics of a Couple of Mutually Interacting Neurons

2013
A model for describing the dynamics of two mutually interacting neurons is considered. In such a context, maintaining statements of the Leaky Integrate-and-Fire framework, we include a random component in the synaptic current, whose role is to modify the equilibrium point of the membrane potential of one of the two neurons when a spike of the other one
BUONOCORE, ANIELLO   +3 more
openaire   +5 more sources

Mutual Caring of Elderly Korean Couples

Journal of Transcultural Nursing, 2007
The article described the experiences of elderly couples caring for each other using ethnographic methodology. Ten couples were interviewed in depth. The presence of a support system was found to be the primary requirement of elderly couples. Three taxonomies comprised the support system: (a) desire for respect in care, (b) desire for reliance, and (c)
Taesung, Ahn, Kwibun, Kim
openaire   +2 more sources

MUTUAL COUPLING STUDY

1967
Abstract : The report gives the complete derivation (in an appendix) of the radiation admittance of a rectangular waveguide acting as an element in an infinite phased array. The derived equations are capable of predicting the experimentally observed anomalous notch that has been found to exist in arrays composed of large waveguides.
null George F., Jr Farrell
openaire   +1 more source

Eigenvalue Based Mutual Coupling Reduction

2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring), 2019
This work introduces a novel decoupling technique which employs the theory of coupled characteristic modes for a two element microstrip array. The key idea is to optimize the shape of the decoupling structure using the eigenvalues of the coupled array which can be computed with no prior knowledge of the excitation arrangement.
Sandip Ghosal   +2 more
openaire   +2 more sources

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