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Rotary Joints
Diamond

Diamond Antenna is a well known leader in the design and manufacture of microwave rotary couplers and Roll Rings. For over 55 years Diamond Antenna has delivered precision microwave rotary couplers for use in radar and satellite communication antennas.

If a standard item doesn't fit your requirements, then let us know what you need and we will assist you by providing a customized solution.

Rotary JointsDiamond rotary Joint

Diamond rotary joints are used with directional antennas in communications and radar applications. Lubricated bearings provide the mechanical interface for a long life of sector scan or full continuous rotation. Consistent high quality signals are passed during both rotation and fixed position transmission and reception.

Typical applications in communications and radar are:
  • Ground station uplinks and downlinks
  • Satellite Payloads
  • Mobile platforms on land or sea or airborne
  • Navigation Systems
Catalogues (Remember, not all of Diamond's capabilities are listed within the catalogs. Please Contact Us for any additional requriements. The table below shows Diamonds standard models and specifications.

Coaxial One Channel Models

CH #Frequency Range (GHz)Insertion Loss (dB)IL WOW (dB)VSWRVSWR WOW (dB)Peak PowerAve. PowerConns
Model: 12-2120-0
1DC~12.40.350.051.30:10.0310kW1kW**Nm
Model: 18-2120-0
1DC~180.40.051.400.0310kW1kW**Nm
Model: 41-2120-0
1DC~40.2*1.200.02*0.001WNf
Model: 41-2120-0
1DC~40.2*1.200.02*0.001WNf
Model: 51-2120-0
18~180.40.051.400.03*10WNf
Model: 18-2124-0
1DC~180.30.051.500.055kW200W**SMAf
Model: 20-2124-0
1DC~20.20.50.11.50.055kW200WSMAf
Model: 26-2124-0
1DC~180.050.11.500.055kW200WSMAf
18~260.750.151.750.07
Model: 60-2124-0
11.75~14.50.30.051.200.05100W25WNf


Coaxial Two Channel Models

CH #Frequency Range (GHz)Insertion Loss (dB)IL WOW (dB)VSWRVSWR WOW (dB)Peak PowerAve. PowerConns
Model: 2220C-0
1DC~2.40.20.051.2850.510kW200W**Nf
2.4~120.50.11.600.1**
2DC~2.40.20.11.250.510kW200W**
2.4~30.50.22.500.110kW*
Model: 21-2220C-0
1DC~2.40.20.051.250.510kW200W**Nf
2.4~120.50.11.600.1**
2DC~2.40.20.051.250.510kW200W**
2.4~30.50.21.500.1**
Model: 2240-0
1DC~80.40.051.350.052kW50WKf
8~1810.051.750.05
2DC~40.750.012.000.1
4~81.50.33.000.35
8~122.50.543.500.8
12~1830.54.502
Model: 20-2240-0
12~80.40.051.350.052kW50WKf
8~1810.051.750.05
24~81.50.33.03.5
8~122.50.53.500.80
12~1830.54.502
Model: 2244A-0
1DC~181.50.051.800.055kW200W**SMAf
2DC~20.40.11.350.1
2~410.22.000.2**
Model: 23-2244A-0
1DC~4.50.50.051.50.05*5WSMAf
2DC~4.510.252.00.25
Model: 74-2255-0
17.9~8.40.40.051.251.05*400WTNCf
27.25~7.751W
Model: 84-2255-0
110.7~12.750.75*1.40**10WSMAf
213.75~14.5
Model: 60-2255-0
17.9~8.40.50.11.50.05*1WSMAf
27.25~7.750.750.1
Model: 61-2255-0
113.75~14.50.3*1.30**20WSMAf
210.95~12.750.51.3510W


Waveguide One Channel Models

CH #Frequency Range (GHz)Insertion Loss (dB)IL WOW (dB)VSWRVSWR WOW (dB)Peak PowerAve. PowerConns
Model: 39-647-0 (U Shaped)
1 5.825~6.425 0.1 0.05 1.15 * * 15Kw WR159
Model: 24-647-0 (U Shaped)
1 7.9~8.4 0.1 0.02 1.15 0.05 6.5MW 15kW WR137
Model: 43-647-0 (U Shaped)
1 5.8825~6.425 0.1 0.05 1.12 * 15kW CW 15kW WR159
Model: 31-745-0 (I Shaped)
1 7.9~8.4 0.15 0.05 1.15 0.03 200W CW 200W WR112
Model: 43-746-0 (L Shaped)
1 7.9~8.4 0.15 * 1.20 1.03 250kW 1.2kW WR112


Diamond Can also Supply 2+ Waveguide Models, please contact us, on 0208 868 1311, if you cannot see a model above that suits your requirements.


Roll RingsDiamond roll ring

Roll-Rings® are based on the rolling contact of flexures between grooved rotor (inner) and stator (outer) rings. In a manner similar to a ball bearing and its races, flexures (shaped like a wedding band) roll between the inner and outer rings while producing very little friction thus maintaining very low wear.

There are four basic styles of Roll-Ring products: Flexures (the original Roll-Ring product), Couplers, Roll-Blocks and Flex-Wheels.

Flexures

Consist of “stacks” of stator and rotor rings, where each ring is adjacent to the next along the centreline axis of rotation. The flexure bridges the annulus between the inner and outer rings to complete the circuit. Flexures are generally used directly within a rotor and stator application.

Couplers

Consist of “stacks” of stator and rotor rings, where each ring is adjacent to the next along the centreline axis of rotation. The coupler bridges the annulus between the inner and outer rings to complete the circuit. Couplers are generally used directly within a rotor and stator application where higher amperage is needed.

Roll Blocks

Consist of flexures embedded in a conductive wheel. The conductive Roll-Block wheel rolls on the surface of the rotor, completing the circuit and is generally used for a drum or platter style application where tension is applied by a spring.

Flex Wheels

Consist of flexures embedded in a conductive wheel. The conductive Flex-Wheel rolls on the surface of the rotor, completing the circuit and is generally used for a high speed drum or platter style application where rotor and wheel tension is achieved by the Flex-Wheel surface (no springs).


If you have any questions or to request a formal quotation please do not hesitate to call us on 0208 868 1311 or email sales@aspen-electronics.com