MA.520.C.B208111.C208151

4. Antenna Parameters

4.1 Return Loss

4.2 Efficiency

Frequency (MHz)

Figure 5. Return loss of MA520 2.4/5 GHz Antenna on 60*60cm metal plate.

Frequency (MHz)

Figure 6. Efficiency of MA520 Cellular Antenna in free space.

0

-5

-10

-15

-20

-25

-30

-35

-40

-45

-50

2.32.42.5 2.62.72.82.9 3 3.13.2 3.33.43.53.63.73.83.9 4 4.14.24.34.44.54.64.74.84.9 5 5.1 5.25.35.45.55.65.75.85.9 6

1 meter

2 meters

5 meters

60

50

40

30

20

10

0

800

900

1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200

0.3 meters

1.0 meter

2.0 meter

3.0 meter

5.0 meter

Return Loss (dB)

Efficiency (%)