VJ5301M915MXBSR
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Vishay Vitramon
Revision: 28-Mar-12
2
Document Number: 45207
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VJ5301M915MXBSR TUNING
Final tuning configuration and component values for L1, L2,
and C1 depend on customer PCB layout. Optimal tuning is
possible with just a few standard components. The nominal
values shown are for a tuned VJ5301M915MXBEK kit.
Fig. 1 - Tuning Example with Inductors L1, L2 and Capacitor C1
Fig. 2 - VJ5301M915 Tuned to 915 MHz with 99 % Power Coupled
Fig. 3 - VJ5301M915 PCB Mounting and Coordinate Directions
Fig. 4 - VJ5301M915MXBSR XY Radiation Pattern
Fig. 5 - VJ5301M915MXBSR YZ Radiation Pattern
Fig. 6 - VJ5301M915MXBSR XZ Radiation Pattern
-25
-20
-15
-10
-5
0
835
875
915
955
995
Fre  uenc   MHz
VJ5301M915
dB
Power Reflection S11 (dB) Versus Frequency (MHz)
99 % power
coupled at
915 MHz for
MHz
Rotation
Pl  n
?= 0?Receiver
Dir    i  n
XY
Y-  xi
YZ
Z-  xi
-
The radiaon paerns reference the elevaon ? that is
-35
-25
-15
-5
5
90?
75?
60?
45?
30?
15?
0?
-15?
-30?
-45?
-60?
-75?
-90?
-105?
-120?
-135?
-150?
-165?
180?
165?
150?
135?
120?
105?
XY / ?
dBi
Rotaon plane / Horizontal E-eld polarizaon
Pole rotaon 瞻
-38
-28
-18
-8
2
90?
75?
60?
45?
30?
15?
0?
-15?
-30?
-45?
-60?
-75?
-90?
-105?
-120?
-135?
-150?
-165?
180?
165?
150?
135?
120?
105?
YZ / ?
dBi
Rotaon plane / Horizontal E-eld polarizaon
Pole rotaon 瞻
-35
-25
-15
-5
5
90?
75?
60?
45?
30?
15?
0?
-15?
-30?
-45?
-60?
-75?
-90?
-105?
-120?
-135?
-150?
-165?
180?
165?
150?
135?
120?
105?
XZ / ?
dBi
Rotaon plane / Vercal E-eld polarizaon
Pole rotaon 瞻