CGN-30-G Series
DUAL DIRECTIONAL COUPLERS
0.7 to 8 GHz / Very Low Insertion Loss / 500 W CW Failsafe / 30 dB Coupling to Both Ports / N-
type
PRINCIPAL SPECIFICATIONS
Model
Number
CGN-30-0.9G
CGN-30-1G
CGN-30-1.5G
CGN-30-1.8G
CGN-30-3G
CGN-30-3.9G
CGN-30-6G
Frequency Coupling¤ Coupling Directivity,
Range,
Value,
Flatness,
dB,
GHz
dB
dB
Typ.
Min.
0.8 - 0.96
0.7 - 1.4
1.0 - 2.0
1.8 - 1.9
2.0 - 4.0
2.6 - 5.2
4.0 - 8.0
30
±
1
30
±
1
30
±
1
30
±
1
30
±
1
30
±
1
30
±
1
±
0.2
±
1.0
±
1.0
±
0.2
±
1.0
±
1.0
±
1.0
30
30
28
30
25
25
25
25
25
23
25
22
20
18
*Insertion
Loss, dB,
Typ. Max.
0.07
0.07
0.18
0.18
0.18
0.1
0.1
0.1
0.1
0.25
0.20
0.25
0.2
0.2
VSWR,
CW
Pkg.
Main Line,
Input, Out.
Typ. Max. W, Max. Ref.
1.05:1 1.10:1
1.05:1 1.10:1
1.05:1 1.15:1
1.05:1 1.10:1
1.05:1 1.20:1
1.10:1 1.20:1
1.10:1 1.20:1
500
400
350
350
300
300
250
A
A
A
B
B
B
C
¤Coupling is referenced to the
input
* Insertion Loss including Coupling ‘‘Loss’’
A-Package Outline
GENERAL SPECIFICATIONS
1.1:1 typ.,
1.2:1 max.
Peak Power, Main Line: 10 kW peak max.
Impedance:
50
Ω
nom.
Operating Range:
-- 55° to +85°C
Connectors, SMA/N-type: To meet the inter-
face requirements
of MIL-C-39012.
VSWR, Coupled Line:
General Notes:
1. The CGN-30-G series of high power dual directional
couplers monitor both forward and reflected power on
antenna feeds. They comprise directional couplers on
each side of the main line to minimize coupled length
and resulting insertion loss. Models are available for
Cellular, GSM and PCN/PCS base stations.
2. Heat generated by losses and reflections is quickly
dissipated from the main line through highly
conductive materials and loads to optimize
performance and enhance reliability.
3. These models comply with MIL-C-15370 and may
be supplied screened for compliance with additional
specifications you designate for military and aerospace
applications requiring higher reliability.
24May96
For further information contact
MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973-575-0531
MERRIMAC [ MERRIMAC INDUSTRIES, INC. ]
