BRIEF DESCRIPTION OF THE DRAWINGS
FIGS. 1A and 1B are diagrams showing examples of conventional antenna apparatuses;
FIGS. 2A and 2B are diagrams showing the structure of a UWB planar antenna apparatus;
FIGS. 3A-3C are diagrams showing data for designing a microstrip line having an impedance of 50Ω;
FIGS. 4A and 4B are perspective views of a UWB planar antenna apparatus according to a first embodiment of the present invention;
FIGS. 5A-5C are diagrams showing the structure of the UWB planar antenna apparatus of the first embodiment;
FIG. 6 is a graph showing a VSWR-frequency relationship of the UWB planar antenna apparatus of the first embodiment;
FIGS. 7A-7C are diagrams showing data for designing a coplanar strip line having an impedance of 50Ω;
FIGS. 8A and 8B are perspective views of a UWB planar antenna apparatus according to a second embodiment of the present invention;
FIGS. 9A-9C are diagrams showing the structure of the UWB planar antenna apparatus of the second embodiment; and
FIGS. 10A-10C are diagrams showing a socket coaxial connector used in the UWB planar antenna apparatus of the second embodiment.