A slot antenna having one or more electronic components attached across a slot of the antenna to provide either an RF open or an RF short based on the bias supplied to a control terminal of the electronic component. The connector includes an insulating housing having a rear terminal-mounting section and at least one longitudinal side wall section extending forwardly from one end of the rear section and combining therewith to define a card-receiving space for receiving a memory card. The shell includes a region having a depth-wise coefficient of thermal expansion and a second coefficient of thermal expansion transverse thereto, the depth-wise coefficient of thermal expansion being greater than the second coefficient of thermal expansion.