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Precision RF Rotary Joints

API Technologies offers a standard line of Rotary Joints, formerly manufactured by Sage Labs, suitable for use in commercial and military applications. The term rotary joint describes a device used to transmit energy from a stationary RF line to a rotating RF line. Rotary joints are the best.

We offer designs with SMA, N, TNC and 2.92 connectors to cover a broad range of applications including:

  • Air traffic control
  • Ground-based, ship based and airborne radar
  • Image transmission
  • Telecommunication control data transmission
  • Medical and Industrial

Our products are designed to meet MIL-E-5400 Class II.

All of our standard products are available through our distribution channels:TTI, RFMW, and Richardson.

Model NumberPart NumberFreq. (GHz)Insertion Loss, Max (dB)VSWRVSWR WOWPower at 1 GHzDC Current Max (Amps)Weight (oz)Torque (In-oz)Rotation Rate (RPM)Con-
nect-
ors
Peak (w)Ave (W)
345 P3-5196G1 DC - 18 DC-10 GHz   < 0.2 dB
10-18 GHz   < 0.5 dB
1.20:1 
1.35:1
1.02 500 100 5 1.2 1.5 100 SMA
345W P3-5196G2 DC - 18 DC-10 GHz   < 0.2dB
10-18 GHz   < 0.5dB
1.20:1 
1.35:1
1.02 500 100 5 1.2 6 100 SMA
345C P3-5196G3 DC - 18 DC-10 GHz   < 0.2dB
10-18 GHz   < 0.5dB
1.20:1 
1.35:1
1.02 500 100 5 0.9 6 100 SMA
345F P3-5196G15 DC - 18 DC-10 GHz   < 0.2dB
10-18 GHz   < 0.5dB
1.20:1 
1.35:1
1.02 500 100 5 1.3 6 100 SMA
Model NumberPart NumberFreq. (GHz)Insertion Loss, Max (dB)VSWRVSWR WOWPower at 1 GHzDC Current Max (Amps)Weight (oz)Torque (In-oz)Rotation Rate (RPM)Con-
nect-
ors
Peak (w)Ave (W)
351 P5-5424G1 DC - 10 0.25 1.30:1 1.05 500 50 3 0.5 5 250 2.92 mm
10 - 20 0.4 1.45:1
20 - 30 0.55 1.60:1 1.1
30 - 40 0.7 1.75:1
Miniature In-line design
Design to MIL-E-5400 Class II
Please review data sheet for additional details on VSWR, IL and Power Rating

Model NumberPart NumberFreq. 
DC-12.4 
(GHz)
Insertion
Loss (dB)
VSWRVSWR WowPower at 1 GHzMax DC Current (Amps)Weight (Oz)Torque (In-Oz)Rotation Rate (RPM)
Peak (Kw)Ave (W)
305W P1-5654G2 DC - 6 GHZ   
  6 - 10 GHz   
10 - 12.4 GHz   
< 0.20
< 0.25
< 0.30
1.15:1
1.30:1
1.50:1
1.01 10 500 10 8 8 500
305WF P1-5654G8 DC - 6 GHZ   
  6 - 10 GHz   
10 - 12.4 GHz   
< 0.20
< 0.25
< 0.30
1.15:1
1.30:1
1.50:1
1.01 10 500 10 9 8 500
344 P1-5760G2 DC - 6 GHZ   
  6 - 10 GHz   
10 - 12.4 GHz   
< 0.20
< 0.25
< 0.30
1.15:1
1.30:1
1.50:1
1.01 10 500 10 4 7 1500
344F P1-5760G1 DC - 6 GHZ   
  6 - 10 GHz   
10 - 12.4 GHz   
< 0.20
< 0.25
< 0.30
1.15:1
1.30:1
1.50:1
1.01 10 500 10 5 7 1500
Design to MIL-E-5400 Class II
Model NumberPart NumberFreq. (GHz)VSWRInsertion 
Loss (dB)
Peak PowerAver-
age Power
Watts
@
f(GHz)
Start-
ing Torque (in.-
oz.)
Contin-
uous Rotat-
ional Speed
(RPM)
Nom-
inal
Weight
(oz)
Con-
nect-
ors
344AF P4-5424G4 DC - 18 1.5: 1 Max 1 6 kW 100 @ 1 GHz 7 1500 5 TNC
Design to MIL-E-5400 Class II
Ultra Low Loss Designs
  • Our engineers continue to push the envelope of technology in order to provide our customers with standard and custom designs that meet specifications and exceed expectations.
  • From wideband DC-18 GHz high power, in-line designs to miniature 10 kilowatt models, API Technologies offers the right model rotary joint for your application.
100% Testing
  • We carefully monitor critical phases of the production process with data logging technology and utilize our in-house testing capabilities from design through full production.
  • All API Technologies Rotary Joints undergo rigorous electrical and mechanical testing for critical parameters.
  • Examples of our standard testing parameters include: Starting Torque, Continuous Torque, Insertion Loss, VSWR and Power Handling.
Custom Solutions
  • We also have an extensive library of custom and modified designs to augment our standard products.
Environmental Conditions
  • API Technologies engineers use self contained pressurized bearing cases to meet harsh environmental conditions.
Components in Stock
  • All of our standard products are available through our distribution channels:
  • TTI
  • RFMW
  • Richardson