CERAMIC COAXIAL RESONATORS
General characteristics
APPLICATIONS
TEMEX coaxial ceramic resonators provide the users with “High Q” higher parallel resonant
impedance and better temperature characteristics than inductor coils and associated lumped constant
elements used in RF amplifiers and oscillators circuits.
These coaxial resonators are perfectly suitable for:
•
•
•
•
DRO/VCO oscillators
Cellular telephone
UHF (LC) coupled amplifiers
Global Positioning Systems (GPS)
• Cordless telephone
• Tuned oscillators
• Narrow band filters
• Duplexers
Table 1: Dimensions
Section
S
(mm)
Hole d
(mm)
TEMEX Ref.
Note:
2.0
± 0.2
0.65
± 0.1
CRS02
3.0
± 0.2
0.95
± 0.1
4.0
± 0.2
1.5
± 0.1
4.0
± 0.2
2.0
± 0.1
6.0
± 0.2
2.0
± 0.1
6.0
± 0.2
2.5
± 0.1
8.0
± 0.2
2.7
± 0.2
10.0
± 0.2
3.3
± 0.2
12.0
± 0.2
3.55
± 0.2
12.0
± 0.2
4.0
± 0.5
CRS03 CRS04 CRS24 CRS06 CRS26 CRS08 CRS10 CRS12 CRS412
(λ/4 application): all faces but (1) are metallized
(λ/2 application): all faces but (1) and (2) are metallized
L
Section
(mm)
d
S
2
0.5
1.0
0.5
3
0.8
1.2
0.5
4
0.8
1.3
0.5
6
1.5
1.7
0.5
8
1.5
2.0
0.7
12
2.0
2.5
1.0
e
L1 L2
L1
(mm)
L2
(mm)
e
(mm)
Table 2: Impedance
TEMEX Ref.
CRS02
CRS03
CRS04
CRS24
CRS06
CRS26
CRS08
CRS10
CRS12
CRS412
εr
=21
16.5
16.0
14.0
10.0
15.5
12.5
15.0
15.5
17.0
15.5
εr
= 37
εr
= 90
12.5
12.0
10.5
7.5
11.5
9.5
11.5
11.5
12.5
11.5
8.0
7.5
6.5
5.0
7.5
6.0
7.0
7.5
8.0
7.5
Table 3: General characteristics
Cross section square
Dielectric constant
Temperature coefficient
of the dielectric
(Standard values)
Resonant freq. range
Frequency tolerance
εr
τf
Fo
Standard
S = 2, 3, 4, 6, 8, 12 mm
21 ± 2 37 ± 1 90 ± 2
21: 5 ± 5 ppm
37: 0 ± 3 ppm
90: 0 ± 10 ppm
Standard: ± 1 % (F)
± 0.5 % (D) and other
on request
Quality factor
Impedance
Metallization
Q
Z
See table 2
Standard: Silver
3-3
Vol. 1
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