Kaarka casriga ah ee loo yaqaan 'Anti-metal Smart Card', Qalabka PVC-Anti-biraha kartoo Card RFID, Kaarka Anti-biraha caaga IC Card

Walxaha ka-hortagga birta waxaa sidoo kale loo yaqaannaa alaabada dahaarka birta, alaabta ferrite, agabka ka hortagga faragelinta ee calaamadaha elektarooniga ah, waxaana sidoo kale loo yaqaannaa "maro magnetic". Ku habboon 13.56MHz/125KHz kaadhadhka soo noqnoqda sare/kaarka soo noqnoqda hooseeya, waxaa lagu soo duubi karaa calaamado lid ku ah birta, ma awoodo oo kaliya in calaamadaha si caadi ah loogu isticmaalo biraha iyo sagxadaha elektromagnetic,

si wax ku ool ah u yaraynaysaa nuugista calaamadaha anteenada by biraha, taas oo kordhinaysa fogaanta dareenka anteenada, Hagaajinta waxqabadka anteenada. Calaamadaha birta ah waxay ku xiran yihiin dusha alaabta birta, iyo kala duwanaansho soo gelintu guud ahaan waa 1 ~ 10cm.
Kaarka smart-ka ee birta ah waxaa loola jeedaa isticmaalka walxaha ka-hortagga biraha sida dabada si ay door uga ciyaaraan ka hortagga faragelinta birta ee kaadhka soo noqnoqda raadiyaha., si loo hubiyo in xitaa haddii kaarka soo noqnoqda raadiyaha uu ku xiran yahay dusha shay bir ah, akhristuhu wuu akhriyi karaa ama qori karaa chip IC. Kaarka casriga ah ee ka-hortagga birta ayaa si buuxda u isticmaala habka lamination iyo feerka ee soo saarista kaararka casriga ah. Waxay leedahay sifooyinka habka wax soo saarka fudud oo degdeg ah, waxayna soo saari kartaa kaadhadhka casriga ah ee PVC-ka-hortagga ee cabbir kasta iyo qeexid kasta.