Applications of direction finding techniques include detection and localization of pulsed electromagnetic sources. This paper presents the design and analysis of a planar antenna system for direction finding. Our proposed system includes 4 hybrid couplers that generate 90<sup>0</sup> shifted signals, 2 crossover couplers also known as 0dB couplers, two 45<sup></sup>0 phase shifters, two 0<sup>0</sup> phase shifters and 4 patch antennas.
This paper presents the structure and analysis of a space diversity antenna system designed for indoor applications. The proposed antenna system consists of two meander monopole antennas with a 0.7 mm wide connection and a 85x35 mm ground plane, conceived and optimized to reduce the mutual coupling between the two radiating elements. We used a simplified deterministic model, based on geometric optics, consisting of two reflecting perpendicular walls, in order to assess the performance of our radiating system in a multipath environment.