Motivation: directly understand an antenna as a receiver

The traditional way is to understand and model the antenna as a transmitter. How about directly model the antenna as a receiver, which might lead to a unique insight and design approach?

Approach: streamlines of Poynting vectors of the total fields

Representative Journal Publications:

  1. Lu Liu, J. Diao, and K. F. Warnick. “Poynting streamlines analysis of near fields and impedance matches for receiving antennas.” IEEE Trans. Antennas Propag., under review.

  2. J. Diao, Lu Liu and K. F. Warnick. “An Intuitive Way to Understand Mutual Coupling Effects in Antenna Arrays Using the Poynting Streamline Method.” IEEE Trans. Antennas Propag., vol. 67, no. 2, pp. 884-891, Feb. 2019.

  3. J. Diao, and K. F. Warnick. “Practical superdirectivity with resonant screened apertures motivated by a Poynting streamline analysis.” IEEE Trans. Antennas Propag., vol. 66, no. 1, pp. 432-437, Jan. 2018.

  4. J. Diao, and K. F. Warnick. “Poynting streamlines, effective area shape and the design of superdirective antenna.” IEEE Trans. Antennas Propag., vol. 65, no. 2, pp. 861-866, Feb. 2017.

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A plane wave incidents on a dipole antenna analyzed by the streamlines of Poynting vectors

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The geometrical shape of effective area of the dipole antenna

Effective area shapes of a two-dipole array with different distances.

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Super-gain horn antenna motivated by Poynting streamline method