Patent ID: 6891507

Claim:
A surface mount antenna functioning as a capacitive-feed surface mount antenna including a radiation electrode and a feed-terminal electrode, the surface mount antenna comprising: a substrate having four continuous surfaces including a front end surface, a top surface, a rear end surface, and a bottom surface; and a conductive film provided on the four continuous surfaces of the substrate; wherein a plurality of spaced-apart slits is formed in the conductive film, the plurality of slits extending across a width of the substrate in a predetermined direction crossing the direction in which the four continuous surfaces surround the substrate and dividing the conductive film into a plurality of conductive film parts; one of the plurality of conductive film parts defines the radiation electrode, which operates as an antenna, and one of the other conductive film parts defines the feed-terminal electrode, which is capacitively coupled to the radiation electrode; at least one of the plurality of slits is formed between the radiation electrode and the feed-terminal electrode and defines a capacitance coupling element for capacitively coupling the radiation electrode to the feed-terminal electrode; a ratio that is at least one of between and among capacitances generated by the plurality of slits is used to match a first impedance of the radiation electrode to a second impedance of the feed-terminal electrode; and the at least one slit forming the capacitance coupling element defines an open end of the radiation electrode and sides of the slit forming the open end are formed by using a dicer.