Analysis of crossed dipole to obtain circular polarization applying Characteristic Modes techniques

Circularly Polarized Antennas Using Characteristic Mode Analysis: A Review

“…To generate the circular polarization, an equal current magnitude and 90° CA phase difference has been generated from an equal crossed dipole to an unequal crossed dipole [51]. It has been observed that a square contour parallel dipole has shown a 90° phase difference for degenerating modes such as mode 2 and mode 3 by analyzing individual orthogonal current modes [52].…”

“…Thus, there is a degree of freedom in the feed network selection and feed location in the final antenna design. Therefore, the techniques for the selection of feed networks and their final optimization with the help of CMA are reviewed in the above section from the mentioned literature [50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65]. Fig.…”

A Dual-Band Dual-Polarized Antenna Design for a Weather Radar with Characteristic Modes Analysis and MoM

“…These insights aid in the choice of the basic structure and excitation location for the antenna [12][13] and the use of numeric methods, usually implemented in software tools, help definitively in the task of define the final model [14] [15]. As is explained in [16], CMA enables the understanding of the radiation of the proposed model with enough accuracy and in combination with MoM, gives a real insight into develop the feeding techniques.…”

T-Shaped Tri-Band Antenna Based on Characteristic Mode Analysis for Satellite Applications

“…For λ n < 0, the stored energy in the form of electric energy and associated mode is capacitive [29]. For a given conducting body, the total electric surface current with excitation is a sum of linear combination of characteristic modes current J n given as [30].…”