Page 312 - System on Package_ Miniaturization of the Entire System
P. 312
286 Cha pte r F i v e
1000
BaTiO 3
Temperature coefficient of capacitance (ppm/ o C) −100 0 PTFE LCP 5 LTCC 3 Glass-titanae 100 Dielectric constant
500
MgTiO
3
200
Epoxy,
Polyimides
100
Ta 2 O 3
Al O
2
500
1000
30
BCB
CaTiO 3
−500
−1000 TiO 2 SrTiO 3
1.01
1.00
0.99
0.98
k t /k at 25°C 0.97 Ta O 3
2
8IO
2
0.96
AI 2 O 3
TIO
0.95 2
Polymer
0.94
0.93
20 40 60 80 100 120 140
Temperature (°C)
FIGURE 5.23 (a) The TCC versus the dielectric constant of various materials. (b) Temperature
stability of the dielectric constant of polymer-based composite fi lms with various fi llers.