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Coaxial Devices
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Variable Coupler
Attenuators

 

100 dB Range Low Phase

 General Description
 General Specifications
Models

General Description

ARRA Variable Directional Couplers are ideal for applications requiring large dynamic attenuated output from the secondary line with minimum main line loss. These units are particularly useful in amplitude monitoring loops, AGC loops and mixer applications.

As in all directional couplers, the main line is isolated from the attenuated secondary line. This type of device can withstand extremely high power levels and may be utilized as a high power continuously variable attenuator with the appropriate termination on the main line output.

General Specifications
Insertion Loss (max) 1.5 dB (Main Line)
6.0 dB (Secondary)
Connectors* SMA Female or Type N Female
VSWR (max) 1.5 after the first 4 dB
Dial Specifications Direct reading in 1 dB increments
Phase Shift 6° typical
Material
Body
Connectors
 Aluminum
MIL-C-39012
Finish ARRA Blue per
MIL-C-22750

 


Model 3952-100X


Model 5955-60


 * To specify SMA connectors, suffix model number with S. Ex: 3952-60XS
To specify panel-mounted version, precede model number with P. Ex: P3952-60X
To specify dial lock option, precede model number with L. Ex:L3952-60X
Note: Units covering other bandwidths are available; contact factory.

Freq
Range (GHz)		 Atten
Range(dB)		 Atten vs
Freq (±dB)		 RF Power
(Avge W)		 Form
Factor		 Model
No.*
0.5-1.0 60
80		 1.00
1.25		 200
200		 0-3176
0-3176		 2951-60
2951-80
60
80		 1.00
1.25		 15
15		 0-3177
0-3177		 2952-60
2952-80
0.9-1.3 60
80
100		 1.00
1.25
1.50		 200
200
200		 0-802
0-802
0-802		 2-3951-60
2-3951-80
2-3951-100
60
80
100		 0.50
0.50
0.75		 15
15
15		 0-660
0-660
0-660		 2-3952-60
2-3952-80
2-3952-100
0.960-1.215 90
100		 0.50
0.75		 5
5		 0-1212
0-1212		 2-3954-90
2-3954-100
1.0-2.0 60
80
100		 1.00
1.25
1.50		 200
200
200		 0-802
0-802
0-802		 3951-60
3951-80
3951-100
60
80
100		 1.00
1.25
1.50		 15
15
15		 0-660
0-660
0-660		 3952-60X
3952-80X
3952-100X
1.4-2.4 60
80
100		 1.00
1.25
1.50		 200
200
200		 0-802
0-802
0-802		 3-4951-60
3-4951-80
3-4951-100
60
80
100		 1.00
1.25
1.50		 15
15
15		 0-660
0-660
0-660		 3-4952-60
3-4952-80
3-4952-100
2.0-4.0 60
80
100		 1.00
1.25
1.50		 200
200
200		 0-802
0-802
0-802		 4951-60
4951-80
4951-100
60
80
100		 1.00
1.25
1.50		 15
15
15		 0-660
0-660
0-660		 4952-60X
4952-80X
4952-100X
4.0-8.0 60
80
60
80		 1.25
1.50
1.25
1.50		 1
1
50
50		 0-2366
0-2366
0-2366
0-2366		 5955-60
5955-80
5956-60
5956-80
Typical Port Designation Panel Mount Standard Form 0-1212
Standard Forms 0-660 & 0-802 Panel Mount Forms 0-1074 & 01089
 Standard Forms 0-3176 & 0-3177  Panel Mount Forms 0-3186 & 0-3187
 Standard Form 0-2366 Panel Mount Form 0-2760


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