Figure 6 shows the measured input characteristics for the final prototype antenna with all the short-bars in planar and folded forms.
It is shown that the folding actually decreases the bandwidth of the planar antenna but does not seriously deteriorate the performance.
The folded antenna shows a VSWR less than 4 in a frequency range from 470 to 890 MHz, which covers the bands of ISDB-T,
ATSC, DTMB and DVB-T.age standing wave ratio (VSWR) less than 3.