| characteristic impedance
|-
! scope="row" | strip_lencenter_len
| real numeric
| meters
| - 0.05 | length of the center line segment
|-
! scope="row" | feed_len
| real numeric
| meters
| - 0.5 * center_len | length of feed line (only in [[EM.Picasso]])|-! scope="row" | sub_len| real numeric| meters | - | length of substrate (only in [[EM.Tempo]])|-! scope="row" | sub_wid| real numeric| meters | - | width of substrate (only in [[EM.Tempo]])|-! scope="row" | draw_substrate| Boolean| -| True | Adds substrate & ground plane
|}