In the medical applications of ultrasonic imaging, sound waves of high frequency are usually employed to produce in-depth cross-sectional images of internal organs. Special multi-element transducers ...
% Antennas Wireless Propag. Lett., vol. 7, pp. 81–84, 2008. % [2] S. Otto, S. Held, A. Rennings, and K. Solbach, % "Array and multiport antenna farfield simulation ...