International Journal of Antennas and Propagation / 2019 / Article / Fig 4

Research Article

Dual-Frequency Miniaturized Substrate Integrated Waveguide Quarter-Mode Cavity-Backed Antenna Based on Minkowski Fractal Gap with Orthogonal Polarization Radiation Characteristics

Figure 4

Process of the evolution of the proposed quarter-mode: (a) layout of full-mode; (b) layout of quarter-mode.