Patent ID: 6950072

Claim:
A surface mount antenna comprising a dielectric substrate and a radiation electrode operative to perform an antenna-operation and arranged in a loop-shape so as to be extended over a plurality of surfaces of the dielectric substrate; the radiation electrode including an electric feeding portion disposed on one side thereof and connected to an external circuit, the radiation electrode being branched in a branching portion existing along a path from the electric feeding portion to the other end to define a plurality of branched radiation electrodes; one of the branched radiation electrodes being an in-loop branched radiation electrode which is surrounded by a loop-shaped electrode including the radiation electrode portion extended from the electric feeding portion to the branching portion and another branched radiation electrode connected to the radiation electrode portion, the in-loop branched radiation electrode being spaced at an interval from the loop-shaped electrode portion; the in-loop branched radiation electrode and the radiation electrode portion extended from the electric feeding portion to the branching portion defining a capacitance therebetween; and at least front ends of the respective branched radiation electrodes being arranged on different surfaces of the dielectric substrate.