Dielectric Resonators
Disc and Cylinder Type
Features
ꢀ
Available in disc and cylinder designs
ꢀ
Various sizes available
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High dielectric constant
ꢀ
High Q factor (6,000 to 35,000)
Wide frequency range (800 MHz to 12.4 GHz)
Configurations
ꢀ
ꢀ
Temperature range (-55°C to +125°C)
D Type
C Type
ꢀ
Linear frequency stability vs. temperature
Repeatability of design
D
D
d
ꢀ
ꢀ
Minimal aging effects
L
L
Applications
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
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Microwave filters
Military radar/ECM
Satellite communications
Repeaters
Oscillators
Combiners
Duplexers
TVRO/DBS
Telemetry
Note: Consult the factory for mechanical dimensions.
Base stations
Part Numbering System
Example: RCB-10000-C1UA
R
C
B
-
10000
-
C
1
U
A
Class
Resonators
Type
D = Disc
C = Cylinder
Material
Series
A = 20
B = 35
C = 50
D = 90
Resonant
Temperature
Coefficient
Temperature
Coefficient
Tolerance
Metallization
S = Silvered
U = Unsilvered
Series
Assigned
by
Frequency
ƒ0 (MHz)
Use 5 digits
A = -6
B = -3
C = 0
D = 3
E = 6
F = 9
1 =
2 =
1
2
factory
TE Mode Resonators
Electrical and Physical Characteristics
Material Series
20
20.5 1
0 6
35
50
50.5 1
0 5
90
35.5 1
0 6
>7,000 (at 7 GHz)
5.2
89.0 1
1 5
Dielectric Constant (ε)
Temp. Coefficient (ppm/°C)
Q (1/tanδ)
>7,000 (at 10 GHz)
6.0
>6,000 (at 5 GHz)
6.5
>1,500 (at 3 GHz)
5.8
Density (g/cm3)
Water Absorption (%)
Frequency Range (GHz)
0.01 max.
2.5~8.5
0.01 max.
1.5~12.4
0.01 max.
1.5~11.0
0.01 max.
1.2~3.5
Temperature Coefficient
Temperature Coefficient Tolerance
Series
Temperature Coefficient (ppm/°C)
Type
Tolerance (ppm/°C)
A
B
C
D
E
F
-6
-3
0
3
6
1
2
1
2
9
Dielectric Resonators for Base Stations
Electrical and Physical Characteristics
Temperature Characteristics
Material Series
35
Temperature Coefficient Dielectric Constant Temperature Coefficient Q at 5 GHz
35.5 1
-3 to +6
B
C
D
E
35.0 1
35.5 1
36.0 1
36.5 1
-3 1 ppm/°C
0 1 ppm/°C
+3 1 ppm/°C
+6 1 ppm/°C
>9,500
>9,400
>9,300
>9,300
Dielectric Constant (ε)
Temp. Coefficient (ppm/°C)
9,600 (at 5 GHz)
35,000 (at 850 MHz)
5.2
Q (1/tanδ)
Density (g/cm3)
Water Absorption (%)
Frequency Range (GHz)
0.01 max.
1.5~12.4
SPECTRUM CONTROL INC.
•
8031 Avonia Rd. • Fairview, PA 16415
•
Phone: 814-835-1650
•
Fax: 814-835-1651 • Website: www.spectrumcontrol.com
59
SPECTRUM CONTROL GmbH
•
Hansastrasse 6 • 91126 Schwabach, Germany • Phone: (49)-9122-795-0 • Fax: (49)-9122-795-58