3

Datasheet

VDP Industrial Series

ANT-8/9-VDP-2000-ccc

VSWR

Figure 2 provides the voltage standing wave ratio (VSWR) across the antenna bandwidth. VSWR describes

the power reflected from the antenna back to the radio. A lower VSWR value indicates better antenna

performance at a given frequency. Reflected power is also shown on the right-side vertical axis as a gauge of

the percentage of transmitter power reflected back from the antenna.

0

10

20

30

40

1

2

3

4

5

850

870

890

910

930

950

Frequency (MHz)

Figure 2. ANT- 8/9-VDP-2000 VSWR with Frequency Band Highlights

Return Loss

Return loss (Figure 3), represents the loss in power at the antenna due to reflected signals. Like VSWR, a

lower return loss value indicates better antenna performance at a given frequency.

-20

-18

-16

-14

-12

-10

-8

-6

-4

-2

0

850

870

890

910

930

950

Frequency (MHz)

Figure 3. ANT- 8/9-VDP-2000 Return Loss with Frequency Band Highlights