Arrays of patch antenna using log periodic property

Abstract

Inset fed rectangular and triangular microstrip arrays have been designed using log periodic property for three and five elements. The antenna elements and the feeding network have been designed using Matlab programs. The simulation, fabrication and testing of the arrays have been carried out. The results are compared showing better frequency independent behavior by the five element array which is also proved by the experimental results.

Improved feeds for log-periodic microstrip antenna arrays

“…Thus, there can be a substantial reduction in the mutual coupling, affecting the proper operation of the array. Moreover, in LPMAs, each element is equivalent to a pair of magnetic dipoles, and with the traditional feed [5][6][7][8][9][10][11][12][13][14][15], these dipoles are parallel to the main feed line. As seen later from simulation, this results in a radiation pattern more aligned to broadside (i.e.…”

“…It includes a model that predicts input impedance and radiation patterns as a function of frequency. An experimental study on inset-fed rectangular and triangular microstrip arrays is available in [6]. In [7], a quasi-log-periodic antenna simulation is available.…”