HIGH FREQUENCY DEVICES
DIELECTRIC RESONATORS–DRD & DRT
U Series
GENERAL CHARACTERISTICS
I
High unloaded Q — 6,000 min. at 7GHz.
I
High dielectric constant —
r
38.
I
Resonant frequency temperature coefficient from –4 to
+10ppm/°C.
I
Accurate and repeatable dielectric constant (±0.5).
I
Improved spurious response (spurious modes are further
removed from fundamental resonant frequency).
I
Decoupled mounting on supports above substrate
maximizes operational Q.
DIMENSIONS & FREQUENCY RANGE
Part Number
CONFIGURATION
Dr
dr
Dr
Lr
Lr
DRT
Do
Dr
Resomics
Support
Lr
Ls
DRD
Copper
Cavity
Lo
TABLE 1: Q &
Type
A
B
C
D
E
F
G
H
f
f
DRD046U
DRD051U
DRD055U
DRD060U
DRD065U
DRD071U
DRD077U
DRD084U
DRD091U
DRD099U
DRD107U
DRD117U
DRD127U
DRD138U
DRD150U
DRD163U
DRD178U
DRD193U
DRD210U
DRD228U
DRD248U
DRD270U
DRD293U
DRD319U
DRD347U
021
022
024
027
029
031
034
037
040
044
048
052
056
061
067
072
079
088
093
101
110
120
130
142
154
Dr ± 0.05
(mm)
4.65
5.06
5.50
5.98
6.50
7.07
7.69
8.36
9.09
9.88
10.75
11.68
12.70
13.81
15.02
16.33
17.76
19.31
21.00
22.83
24.82
26.99
29.35
31.91
34.70
Lr ± 0.05
(mm)
2.08
2.24
2.44
2.65
2.88
3.14
3.41
3.71
4.03
4.38
4.77
5.18
5.63
6.13
6.66
7.24
7.88
8.56
9.31
10.13
11.01
11.97
13.02
14.15
15.39
Frequency
Range* (GHz)
11.46 to 12.45
10.54 to 11.45
9.69 to 10.53
8.91 to 9.68
8.20 to 8.90
7.54 to 8.19
6.93 to 7.53
6.38 to 6.92
5.87 to 6.37
5.40 to 5.86
4.96 to 5.39
4.56 to 4.95
4.20 to 4.55
3.86 to 4.19
3.55 to 3.85
3.27 to 3.54
3.00 to 3.26
2.76 to 2.99
2.54 to 2.75
2.34 to 2.53
2.15 to 2.33
1.98 to 2.14
1.82 to 1.97
1.67 to 1.81
1.54 to 1.66
Temp. Coeff.
(ppm/°C)
–4
–2
0
2
4
6
8
10
Dielectric
Constant
r (±0.5)
36.6
37.0
37.4
37.7
38.0
38.3
38.6
38.9
Unloaded
Q
(at 7GHz)
DIMENSIONS & FREQUENCY RANGE
Dr ± 0.05 dr ± 0.1
(mm)
(mm)
DRT051U020 022
5.06
____________________________
DRT055U020 024
5.50
____________________________
DRT060U020 027
5.98
____________________________
2.0
DRT065U020 029
6.50
____________________________
DRT071U020 031
7.07
____________________________
DRT077U020 034
7.69
DRT084U030 037
8.36
____________________________
DRT091U030 040
9.09
____________________________
3.0
DRT099U030 044
9.88
____________________________
DRT105U030 046
10.50
DRT107U040 048
10.75
____________________________
DRT117U040 052
11.68
____________________________
DRT127U040 056
12.70
____________________________
DRT138U040 061
13.81
____________________________
DRT150U040 067
15.02
____________________________
4.0
DRT163U040 072
16.33
____________________________
DRT178U040 079
17.76
____________________________
DRT193U040 086
19.31
____________________________
DRT200U040 086
20.00
DRT200U040 086
20.00
6.0
Part Number
Lr ± 0.05
Frequency
(mm)
Range* (GHz)
2.24
10.54 to 11.45
_______________________
2.44
9.69 to 10.53
_______________________
2.65
8.91 to 9.68
_______________________
2.88
8.20 to 8.90
_______________________
3.14
7.54 to 8.19
_______________________
3.41
6.93 to 7.53
3.71
6.38 to 6.92
_______________________
4.03
5.87 to 6.37
_______________________
4.38
5.40 to 5.86
_______________________
4.60
5.08 to 5.51
4.77
4.96 to 5.39
_______________________
5.18
4.56 to 4.95
_______________________
5.63
4.20 to 4.55
_______________________
6.13
3.86 to 4.19
_______________________
6.66
3.55 to 3.85
_______________________
7.24
3.27 to 3.54
_______________________
7.88
3.00 to 3.26
_______________________
8.56
2.76 to 2.99
_______________________
8.63
2.67 to 2.89
8.63
2.66 to 2.88
6000 min.
Q can be approximated by:
Q
≥
100,000
2.0 x fo + 2.6
fo = [GHz]
TABLE 2:
f
TOLERANCE
f
Identification
—
A
B
Tol. (ppm/°C)
±2
±1
±0.5
Note:
*Frequency is measured under the condition: Lr/Lo = 0.33.
PART NUMBERING
DRT
Outside diameter
DRD = disk type
DRT = cylindrical type
(Dr)
Note:
055
Material
type
U
Inside
020
024
(Resonant Freq., T.C.)
as shown in Table 1
f
A
Thickness
f
tolerance
as shown in Table 2
diameter
(dr) for DRT only
(Lr)
For actual dimension in mm, divide number by 10.
292
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