CBG-B Series
3-PORT DIRECTIONAL COUPLERS
5 to 2000 MHz / 10 dB & 20 dB Models / Multi-Octave Units / Low Profile Surface Mount Package
PRINCIPAL SPECIFICATIONS
Model
Number
CBG-10B-375
CBG-20B-375
Frequency
Range,
MHz
5 - 750
5 - 750
Performance
Bandwidth,
MHz
5 - 750
5 - 750
10 - 400
100 - 2000
500 - 1000
100 - 2000
500 - 1000
¤ Coupling
dB,
Nom.
10
±
1.0
20
±
1.0
20
±
1.0
11
±
1.0
11
±
1.0
20
±
1.0
20
±
1.0
Frequency
Sensitivity,
dB, Max.
±
0.5
±
0.75
±
0.5
±
0.5
±
0.5
±
0.5
±
0.5
Directivity,
dB,
Min.
20
18
20
15
15
15
15
*Insertion
Loss, dB, VSWR
Max.
Max.
1.3
1.0
0.6
1.5
1.2
1.5
1.2
1.5:1
1.5:1
1.3:1
1.7:1
1.5:1
1.7:1
1.5:1
CBG-11B-1250 100 - 2000
CBG-20B-1250 100 - 2000
¤ Coupling is Referenced to the Input
* Insertion Loss excludes Coupling Loss
General Notes:
1. Directional couplers find applications in monitoring of incident and reflected power,
sampling for control loops as well as signal injection devices in BITE systems.
2. These Directional Couplers are 3 port devices with one port internally terminated.
They also may be used back-to-back as Dual Directional Couplers, or ordered with
both coupled ports available, as Bi-Directional Couplers in the CRG-B series.
3. Optional performance characteristics for this series include frequencies up to 2.5
GHz, coupling from 5 to 30 dB, close tolerance coupling and more.
GENERAL SPECIFICATIONS
Impedance:
CW Input:
Weight, nominal:
Operating Temperature:
50
Ω
nom.
1 W max.
0.1 oz (2.8 g)
-- 55° to +85°C
Surface Mount
B-Package Outline
Pin
1
2
3
4
Function
Input
Output
Internal Termination
Forward Coupling
NOTES:
1. Tolerance on 3 place decimals
±
.010(.25) except as noted.
2. Dimensions in inches over millimeters.
3. Dimensions marked with * apply only at body.
4. All unmarked pins are case ground.
26Apr96
For further information contact
MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973-575-0531
MERRIMAC [ MERRIMAC INDUSTRIES, INC. ]
