IPC-TM-650 EN 2022 试验方法1.pdf - 第551页
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IPC-TM-650
Number Subject Date
Revision
where
h
g
is the distance between the metal enclosures of the fixture;
D is internal diameter of the metal enclosures;
L is internal height of the metal enclosures;
d
r
is the diameter of the dielectric resonator;
h
r
is the thickness of the dielectric resonator.
3.3 Specimen Thickness
The thicker the specimen the less error occurs in the measurements. A thin specimen may be stacked
up to a minimum of 0.4 mm [0.016 in] to improve measurement accuracy. The air gaps between the sample and the fixture do
not affect the measurement.
3.4 Number of Specimens
Three specimens for the test at room temperature and one specimen for the test at variable temperatures
are required for each SPDR test fixture for this test. Table 1 shows the supported specimen dimensions
Table 1 – Specimen Dimensions
NominalFrequency[GHz]
SpecimenSizes
mm[inch]
MaximumThickness
mm[inch]
1 150 X 150 [5.9 X 5.9] 6.0 [0.24]
3 80 X 80 [3.2 X 3.2] 3.0 [0.12]
5 to 6 80 X 80 [3.2 X 3.2] 2.0 [0.08]
9 to 10 80 X 80 [3.2 X 3.2]
0.9 [0.035]
13 to 16 50 X 35 [2.0 X 1.4] 0.6 [0.024]
18 to 20 15 X 15 [0.6 X 0.6] 0.5 [0.020]
2.5.5.15
RelativePermittivityandLossTangentUsinga
06/22
Split-PostDielectricResonator
N/A
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