Radio antenna structure for radiating or receiving various frequency bands has flat main antenna with current supply on circuit board and connected to earth, with parasitic flat antenna alongside it

摘要: A circuit board (CB) carries a radio wave coupling system (KS1). flat rectangular main antenna (MA1) is formed near one edge of the and has current supply connection (S1) an earth (G1) on short edge. parasitic (PE1) adjacent to forms part structure (AS1). The connected (G2) via concentrated electric impedance (LP1).