This paper reports the analysis, design, prototyping and first measurement results of a linear array antenna consisting of Yagi-Uda elements, rotated and phased for focusing RF power in the near-field of the antenna. By employing Near Field Focusing more power may be transmitted before the EIRP limit is reached due to the inherent far-field difusing. A design based on four Yagi-Uda array elements is able to produce an average power density of 21.04dBm/m2 at 2.45GHz in a box of 10×10×10cm3 located 1m from the linear array face. The design has been verified through comparison with full-wave electromagnetic simulations. First measurements on a realized prototype confirm the functioning of the array.
|Number of pages||5|
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 1 Jan 2013|
|Event||13th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, PowerMEMS 2013 - London, United Kingdom|
Duration: 3 Dec 2013 → 6 Dec 2013