CERAMIC COAXIAL RESONATORS
General characteristics
AP P LICATIONS
TEMEX coaxial ceram ic resonators provide the users with “High Q” higher parallel resonant
im pedance and better tem perature characteristics than inductor coils and associated lum ped constant
elem ents used in RF am plifiers and oscillators circuits.
These coaxial resonators are perfectly suitable for:
• DRO/VCO oscillators
• Cellular telephone
• UHF (LC) coupled am plifiers
• Global Positioning System s (GPS)
• Cordless telephone
•Tuned oscillators
• Narrow band filters
• Duplexers
Table 1: Dim ensions
Section S
(m m )
Hole d
(m m )
2.0
3.0
4.0
± 0.2
1.5
4.0
± 0.2
2.0
6.0
± 0.2
2.0
6.0
± 0.2
2.5
8.0
± 0.2
2.7
10.0
± 0.2
3.3
12.0
± 0.2
3.55
12.0
± 0.2
4.0
± 0.2
0.65
± 0.1
± 0.2
0.95
± 0.1
± 0.1
± 0.1
± 0.1
± 0.1
± 0.2
± 0.2
± 0.2
± 0.5
TEMEX Ref.
CRS02 CRS03 CRS04 CRS24 CRS06 CRS26 CRS08 CRS10 CRS12 CRS412
Note: (λ/4 application): all faces but (1) are m etallized
(λ/2 application): all faces but (1) and (2) are m etallized
Section
L
2
3
4
6
8
12
(m m )
L1 (m m )
L2 (m m )
e (m m )
0.5
1.0
0.5
0.8
1.2
0.5
0.8
1.3
0.5
1.5
1.7
0.5
1.5
2.0
0.7
2.0
2.5
1.0
S
d
e
L1 L2
Table 2: Im pedance
Table 3: General characteristics
Standard
S = 2, 3, 4, 6, 8, 12mm
Cross section square
TEMEX Ref.
εr =21 εr = 37 εr = 90
Dielectric constant
εr
τf
21 ± 2 37 ± 1 90 ± 2
CRS02
CRS03
CRS04
CRS24
CRS06
CRS26
CRS08
CRS10
CRS12
CRS412
16.5
16.0
14.0
10.0
15.5
12.5
15.0
15.5
17.0
15.5
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
Tem perature coefficient
of the dielectric
(Standard values)
21: 5 ± 5 ppm
37: 0 ± 3 ppm
90: 0 ± 10 ppm
Resonant freq. range
Fo
See tables
Standard: ± 1 % (F)
± 0.5 % (D) and other
on request
Frequency tolerance
Quality factor
Q
Z
See curves
Im pedance
See table 2
Metallization
Standard: Silver
3-3
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