BF3005 Temex Electronics, BF3005 Datasheet - Page 7

• Manufacturer Part Number: BF3005
• Description: FERRITE DEVICES
• Manufacturer: Temex Electronics

Load VSWR
Power rating of a ferrite device depends on the mismatch at the output port (load VSWR); for instance,
for an isolator, if load VSWR is 2: 1, more than 10% of the input power is reflected inside the ferrite
device to the internal load.
In case of short-circuit (infinite load VSWR), the ferrite device has to handle the equivalent of twice
the input CW-power, and the equivalent of a peak power equal to 4 times the input power, based on
the higher internal voltage levels.
Therefore, the time-duration of short circuit or high load VSWR is needed in order to determine an
adequate safety margin.
Third order intermodulation products (IMP 32 )
Harmonics and third order intermodulation products appear when non-linear elements are used such
as ferrite materials, metal welds, surface finish, etc.
When two tones - F
2F
•
•
2
-F
Test conditions (to be specified)
-
-
Third order intermodulation products
-
-
1
are critical in some communication systems and should be specified when ordering (see Fig. 8).
F
P
P
IMP
1
1
IM3
IMP
and F
and P
32
in dBm or,
32
= P
2,
2
IM3
in W or dBm.
1
POWER
- P
and F
SALES OFFICES: VISIT OUR WEB SITE AT
P
1
P1
P2
IM3
in dBc.
2
- are applied to a ferrite device, the relative amplitudes of 2F
http://www.temex.net
2F
1 -
FIG. 8
F
2
Technical information / Electrical features
F
1
F
F
2
2F
2 -
FERRITE DEVICES
F
1
FREQUENCY
1
- F
2
Vol. 1
and
15-7