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
Frequency
Range,
MHz
Performance
Bandwidth,
MHz
¤ Coupling Frequency Directivity, *Insertion
Model
Number
dB,
Sensitivity,
dB, Max.
dB,
Loss, dB, VSWR
Nom.
Min.
Max.
Max.
CBG-10B-375
CBG-20B-375
5 - 750
5 - 750
5 - 750
5 - 750
10 - 400
100 - 2000
500 - 1000
100 - 2000
500 - 1000
10 ± 1.0
20 ± 1.0
20 ± 1.0
11 ± 1.0
11 ± 1.0
20 ± 1.0
20 ± 1.0
± 0.5
± 0.75
± 0.5
± 0.5
± 0.5
± 0.5
± 0.5
20
18
20
15
15
15
15
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:
GENERAL SPECIFICATIONS
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.
Impedance:
50 W nom.
CW Input:
1 W max.
Weight, nominal:
Operating Temperature:
0.1 oz (2.8 g)
-- 55° to +85°C
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.
Surface Mount
B-Package Outline
Pin
Function
Input
Output
1
2
3
4
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