Innovative Radiating Systems for Train Localization in Interference Conditions

Table 3

Single element physical parameters.

Parameter	Value	Note
𝜀𝑟	2.2	Dielectric constant
𝑡	4	Substrate thickness
𝑎	2.8	Patch arm width
𝑏	2.8	Patch arm length
𝑀𝑥	6.1	Mushroom width
𝑀𝑦	6.1	Mushroom length
mt	0.1	Mushroom thickness
dp	1.8	Probe plate diameter
𝑠	0.15	Gap probe-patch
Vd	0.7	Via diameter
Ph	2	Parallel plates capacitors height
dh	3.85	Parasitic element height (𝑡−𝑠)
𝑔	0.2	Gap between metals
𝑜	1.9	Feed offset
𝐿𝑥	18.4	Square ring 𝑥-size
𝐿𝑦	18.4	Square ring 𝑦-size
H-port 𝑥	1.9	Feed offset
H-port 𝑦	9.2	𝐿𝑦/2
V-port 𝑥	9.2	𝐿𝑥/2
𝑉-port 𝑦	1.9	Feed offset