I-Rigid-flex circuits isiye yanda kakhulu eminyakeni yamuva nje ngenxa yokuthi ihlanganisa ukuguquguquka kwama-flex circuit kanye nokuqina.& ukwethembeka kwe-FR4 PCB. Enye yezinto ezibalulekile zokucatshangelwa kwedizayini lapho udala isekethe eqinile-flex inani le-impedance. Kumasiginali avamile wemvamisa ephezulu namasekhethi e-RF, i-50ohm iyivelu elivame ukusetshenziswa abaklami nabatuswa ngumkhiqizi, ngakho kungani ukhetha u-50ohm? Ingabe i-30ohm noma i-80ohm iyatholakala? Namuhla, sizohlola izizathu zokuthi kungani i-impedance engu-50ohm iyindlela efanelekile yokukhetha yamasekhethi aqinile-flex.