CTM-M-G Series
0.5 to 18 GHz / Multi-Octave Bandwidths / 6, 10 & 20 dB Coupling / 50 W / Stripline / SMA / Rev. 06/11/09
DIRECTIONAL COUPLERS
PRINCIPAL SPECIFICATIONS
Model
Number
Frequency
Range,
GHz
Coupling¤, Frequency
dB,
Sensitivity,
Nom.
dB, Nom.
6
±1.0
10
±1.0
20
±1.0
6
±1.0
10
±1.0
20
±1.0
6
±1.0
10
±1.0
20
±1.0
6
±1.0
10
±1.0
20
±1.0
10
±1.25
20
±1.25
±
0.75
±
0.75
±
0.75
±
0.50
±
0.50
±
0.50
±
0.30
±
0.40
±
0.40
±
0.30
±
0.40
±
0.40
±
0.75
±
0.60
Directivity,
dB,
Min.
23
23
23
23
23
23
20
20
20
17
17
17
15
15
*Insertion
Loss,
dB, Max.
0.35
0.35
0.35
0.35
0.35
0.40
0.50
0. 5
0.40
0.50
0.50
0.50
0.60
0.60
VSWR Max. Outline
Main Coupled
Ref.
Line
Line
Dim.
1.20:1 1.20:1
1.20:1 1.20:1
1.20:1 1.20:1
1.20:1 1.20:1
1.20:1 1.20:1
1.20:1 1.20:1
1.25:1 1.25:1
1.25:1 1.25:1
1.25:1 1.25:1
1.30:1 1.30:1
1.30:1 1.30:1
1.30:1 1.30:1
1.35:1 1.40:1
1.35:1 1.40:1
1
2
2
3
3
4
5
5
6
7
7
8
9
9
CTM-6M-1.25G 0.5 - 2.0
CTM-10M-1.25G
CTM-20M-1.25G
CTM-6M-2.5G
CTM-10M-2.5G
CTM-20M-2.5G
CTM-6M-5G
CTM-10M-5G
CTM-20M-5G
CTM-6M-8G
CTM-10M-8G
CTM-20M-8G
CTM-10M-12G
CTM-20M-12G
1.0 - 4.0
2.0 - 8.0
4.0 - 12.4
7.0 - 18.0
6.0 - 18.0
¤Coupling is referenced to the
input
* Insertion Loss above Coupling Loss
POWER SPECIFICATIONS
Coupled Power ‘‘Loss’’:
6 dB units:
10 dB units:
20 dB units:
Peak Power:
CW Input Power
(Forward)
:
Reflected Power:
6 dB units:
10 dB units:
20 dB units:
1.25 dB
0.46 dB
0.044 dB
3 kW max.
50 Watts max.
2 Watts max.
5 Watts max.
50 Watts max.
GENERAL SPECIFICATIONS
Impedance:
Operating Temp:
50
Ω
nom.
-- 55° to +85°C
SMA Connectors: Female, to meet the
interface requirements
of MIL-C-39012
Other connectors: TNC and N type
optionally available.
Inquire at factory.
9
For further information contact
MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973-575-0531
CTM-M-G Series
500 MHz to 18 GHz / Multi-Octave Bandwidths / 6, 10 & 20 dB Coupling / 50 W / Stripline / SMA
DIRECTIONAL COUPLERS
Package Outline
NOTES:
1. Tolerance on 3 place decimals
±
.020(.51) except as noted.
2. Dimensions in inches over millimeters.
3. Weights are nominal on all outlines.
General Notes:
1. The CTM series directional couplers are miniature three port devices utilizing stripline technology in a connectorized package.
Each is a multi-section quarter wave coupler designed to cover a broad bandwidth. They are ideally suited to monitor forward
or reflected power with minimal perturbation to the main line signal, signal sampling, control loops and test signal injection
devices in BITE.
2. A variety of models may be custom ordered with coupling values up to 30 dB and covering frequency bands up to 18 GHz.
3. These units comply with MIL-C-15370 and may be supplied screened for compliance with additional specifications you
designate for military and space applications requiring the highest reliability.
16Aug99
For further information contact
MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973-575-0531
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