Antenna

摘要

An antenna (10) including a ground plane (11) with a straight edge (111), a first antenna element (13) extending substantially parallel to the edge (111), and a ground element (12) electrically connecting a first end of the first antenna element (13) with the ground plane (11). A second antenna element (14) extends, between the ground plane edge (111) and the first antenna element (13), substantially parallel to the first antenna element (13). An end of the second antenna element (14) opposed to a feeding point (141) is connected with the first antenna element (13). A third antenna element (15) is disposed such that the first antenna element (13) is sandwiched between the second antenna element (14) and the third antenna element (15), and has a rear end connected with a second end of the first antenna element (13) and an open leading end (152). The antenna (10) functions both as an inverted-F antenna and a folded monopole antenna respectively having first and second resonant frequencies.