International Journal of Antennas and Propagation / 2016 / Article / Fig 4

Research Article

Mixed-Potential Integral Equation Based Characteristic Mode Analysis of Microstrip Antennas

Figure 4

Modal significances (a) and characteristic angles (b) for the dual-band CP antenna. ,  mm,  mm,  mm,  mm, , and . The grayed dash lines indicate the frequency at which the characteristic angle differences exactly equal 90°.
(a)
(b)