Principle and realization of an ESPAR antenna using L and C

摘要

In this paper, a method for determining the value of the inductor (L) and the capacitor (C) that maximize the channel capacity is presented. An optimized beam steering characteristic is realized through this method. The proposed ESPAR antenna structure is composed of a mono fed, active antenna, and two parasitic antennas. The predetermined L and C are connected to the parasitic antennas. The proposed ESPAR antenna was fabricated and the S-parameter, radiation pattern, and the gain of the fabricated antenna were measured at a resonant frequency of 2.4 GHz. The resultant gain was 3.75 dBi, and it was proved that the MIPP and beam steering characteristics that are the requirements of an ESPAR antenna were realized.