Date Added: Sep 2010
The authors present the real-world evaluation of SPIDA, an electronically switched directional antenna. Compared to most existing work in the field, SPIDA is practical as well as inexpensive. They interface SPIDA with an off-the-shelf sensor node which provides one with a fully working real-world prototype. The authors assess the performance of the authors' prototype by comparing the behavior of SPIDA against traditional omni-directional antennas. Their results demonstrate that the SPIDA prototype concentrates the radiated power only in given directions, thus enabling increased communication range at no additional energy cost.