Design Note DN025
Figure 17. Effective PCB Size Comparisons between for JTI Ultimate Compact Solution
and Integrated Inductor Valueline Design
Referring to Figure 17, the JTI design on the left side is 8.6 mm x 8.6 mm ~74 mm
2
; the
ValueLine design is 9.7 mm x 21.7 mm ~210 mm
2
. The discrete design size is 9.7 mm x 16.1
mm ~156 mm
2
.
3.3.2.1
3.3.2.1.1
JTI Matched Filter Balun 433 MHz
Output Power and Harmonics
433
MHz
8.4
8.2
10
866
MHz
-46
-47
-36
1299
MHz
-51
-49
-30
1732
MHz
-62
-54
-30
2165
MHz
-62
-49
-30
2598
MHz
-64
-44
-30
3031
MHz
-57
-37
-30
3464
MHz
-63
-38
-30
Solution
Discrete (ML)
JTI
Limits
All values are in dBm.
Similar performance as multi-layer discrete solution. Lower 8th & 9th harmonic attenuation
but still good enough margins
SWRA250A
Page 16 of 26
JOHANSON [ JOHANSON TECHNOLOGY INC. ]
