Integrating Superdirective Electrically Small Antenna Arrays in PCBs

This letter investigates integrating a two-element superdirective electrically small antenna (ESA) array in a printed circuit board (PCB). The initial array dimensions are 31 ×25 mm2, and it is integrated in a PCB of 110 ×70 mm2. Different configurations are evaluated with respect to the impedance matching, the maximum achievable directivity, and the efficiency. The obtained results show that properly integrating the array in a PCB can maintain its superdirectivity and significantly increase its radiation efficiency. Compared to the initial array, the final one achieves a gain improvement of 13.6 dB.

[1]  Abdullah Haskou,et al.  A design methodology for electrically small superdirective antenna arrays , 2014, 2014 Loughborough Antennas and Propagation Conference (LAPC).

[2]  T.H. O'Donnell,et al.  A monopole superdirective array , 2005, IEEE Transactions on Antennas and Propagation.

[3]  Arthur D. Yaghjian,et al.  Electrically small supergain end‐fire arrays , 2007, 0708.1988.

[4]  T.H. O'Donnell,et al.  Electrically small superdirective arrays using parasitic elements , 2006, 2006 IEEE Antennas and Propagation Society International Symposium.

[5]  S. Collardey,et al.  DVB-T reception test with ultra miniature CPW antenna , 2011, Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP).

[6]  S. Collardey,et al.  Superdirective metamaterial-inspired electrically small antenna arrays , 2013, 2013 7th European Conference on Antennas and Propagation (EuCAP).