Radiation analysis in the space domain of laterally shielded planar transmission lines: 2. Applications

The second part of this two‐piece paper applies the method developed in part 1 to show some interesting features for the practical analysis and design of leaky‐wave antennas. Novel analytical formulas based on the propagation and radiation discrete Parallel‐Plate Waveguide (PPW) spectrum coefficients described in the first part are presented, in order to calculate some interesting propagation and radiation aspects of leaky‐wave modes. These formulas will be used in the design of a slot‐line millimeter‐wave band leaky‐wave antenna, measuring parameters such as reflection and radiation losses, polarization purity, and coupling with undesired channel‐guide leaky modes. Comparisons with previous works for slot‐line leaky‐wave modes are presented, together with novel and interesting results, showing the usefulness of the proposed approach for the design of practical leaky‐wave laterally shielded planar printed antennas.