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In this paper, a double V-shaped metasurface that can efficiently convert linear polarizations of electromagnetic (EM) waves in… Expand A novel kind of circular polarization and dual-frequency linear polarization microstrip antennas is proposed. The designs are… Expand The design of a dual-polarization stacked patch antenna to be used in GSM-UMTS base station arrays is presented. The patch shows… Expand We present first-epoch, milliarcsecond-scale linear polarization images at 15 GHz of 133 jets associated with active galactic… Expand A novel reconfigurable microstrip antenna with switchable polarization sense is proposed. The proposed antenna has a simple… Expand We measured the linear polarization of Sagittarius A* to be 7.2% ± 0.6% at 230 GHz using the BIMA array with a resolution of 36… Expand Polarization patterns in the transverse plane generically contain singularities: points of circular polarization (C points… Expand We describe initial results from an apparatus and protocol designed to implement quantum public key distribution, by which two… Expand Abstract A comparison of experimental imaging results obtained with linearly polarized and circularly polarized radiofrequency… Expand The Vivaldi Aerial is a new member of the class of aperiodic continuously scaled antenna structures and, as such, it has… Expand