Yinfang Xu

References 1, , and , “Substrate Integrated Transmission Lines: Review and Applications,” IEEE Journal of Microwaves 1, no. 1 (2021): 345–363. 2 and , “Substrate Integrated Waveguide Filters: Design Techniques and Structure Innovations,” IEEE Microwave Magazine 15, no. 6 (2014): 121–133. 3, , and , “Miniaturized SIW Filter Based on L-Shaped Slot Structure,” Journal of Microwaves 38, no. 1 (2022): 66–70.

2.1.2. Monopole and Microstrip Line Designs Depending on the above design of the AMC structure, the monopole antenna was determined next. To reduce the height of the monopole antenna for 5.8 GHz radiation, the substrate top-loaded technique was employed. The top substrate with blue color in Figure 1 is TP1020, the permittivity is 10.2, and the loss tangent is 0.0015. Another substrate below is FR4, which has a permittivity of 4.4 and a loss tangent of 0.025.