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High Power Waveguide Rotating Joint

Dolph Microwave High Power Waveguide Rotating Joint​​ enables seamless transfer of high-power RF signals (up to ​​12,000 Watts​​ at S-band) between stationary and rotating assemblies in critical radar and satellite systems. Engineered with ​​double bearings​​, ​​precision seals​​ (IP65 rating), and ​​≤ 0.2 dB insertion loss​​, it ensures exceptional performance, durability, and reliability across ​​1.72 to 40.0 GHz​​ frequencies.

​​Product Overview:​

Dolph Microwave’s High Power Waveguide Rotary Joints are precision-engineered components critical for the seamless transmission of RF energy between stationary and rotating platforms within demanding radar systems and satellite communication antennas. Engineered to operate under rigorous conditions, these joints ensure continuous signal integrity and power transfer essential for modern phased array radars, satcom terminals, and electronic warfare systems. Designs undergo rigorous simulation and physical testing, including verification at maximum peak power levels prior to delivery.

​Key Features & Engineering Excellence:​

  • ​Robust Power Handling:​​ Specifically engineered for pressurized waveguide systems demanding maximum power transfer. Designs incorporate features like double-bearing assemblies and precision-engineered seals, ensuring reliable operation and maintaining pressurization integrity even under high continuous (CW) and peak power loads (e.g., 12 kW average at 2 GHz down to 300 W at 40 GHz as per datasheet).
  • ​Minimal Insertion Loss:​​ Optimized transmission paths yield insertion loss as low as ​​0.2 dB​​ across the operational band (reference datasheet VSWR/IL specs), significantly boosting system signal-to-noise ratio (SNR) and radar detection range.
  • ​High Channel Isolation:​​ Provides effective isolation between channels, minimizing interference and crosstalk crucial for multi-functional or multi-channel systems.
  • ​Enhanced Durability & Longevity:​​ Built for critical, high-duty-cycle applications. The combination of robust materials (Aluminum or Copper alloy), advanced bearing designs, and corrosion-resistant finishes (standard chromate conversion plus painted flat black) ensures exceptional operational lifespan and reliability in harsh environments.
  • ​Versatile Configurations:​​ Available in standard U-Style (90° bend), L-Style, and In-line orientations (indicated by the I/L/U suffix in the model number) to accommodate diverse mechanical and waveguide routing requirements.
  • ​Environmental Protection:​​ Standard IP65 rating ensures protection against dust ingress and water jets, suitable for demanding operational environments.

​Primary Applications:​

These high-performance rotary joints are indispensable in systems where uninterrupted rotation and reliable high-power RF transmission are paramount:

  • ​Phased Array & Surveillance Radar Systems​​ (Ground-based, Naval, Airborne)
  • ​Satellite Communication (SATCOM)​​ Earth Station Antennas (Tracking antennas, VSAT)
  • ​Electronic Warfare (EW)​​ and Signal Intelligence (SIGINT) Platforms
  • ​Aerospace & Defense​​ Systems (Missile seekers, airborne radar)
  • ​High-Power Wireless Testing Equipment​​ (ATE systems, anechoic chambers)
  • ​Advanced Medical Imaging Equipment​​ (e.g., high-field MRI requiring rotational components)
MODEL FREQ RANGE (GHz) OPERATING BW VSWR (Max) IL(dB) (Max) AVG. POWER (W) FLANGES TYPE INGRESS PROTECTION MATERIAL FINISH DATASHEET
COVER GROOVED
DH-22WHPJI 1.72-2.61 10% 1.15:1 0.2 12000 UDR32 PDR32 IP65 Al/Cu Chromate/Painted PDF STEP
DH-22WHPJL 1.72-2.61 10% 1.15:1 0.2 12000 UDR32 PDR32 IP65 Al/Cu Chromate/Painted PDF STEP
DH-22WHPJU 1.72-2.61 10% 1.15:1 0.2 12000 UDR32 PDR32 IP65 Al/Cu Chromate/Painted PDF STEP
DH-32WHPJI 2.60-3.95 10% 1.15:1 0.2 10000 UDR32 PDR32 IP65 Al/Cu Chromate/Painted PDF STEP
DH-32WHPJL 2.60-3.95 10% 1.15:1 0.2 10000 UDR32 PDR32 IP65 Al/Cu Chromate/Painted PDF STEP
DH-32WHPJU 2.60-3.95 10% 1.15:1 0.2 10000 UDR32 PDR32 IP65 Al/Cu Chromate/Painted PDF STEP
DH-40WHPJI 3.22-4.90 10% 1.15:1 0.2 3000 UDR40 PDR40 IP65 Al/Cu Chromate/Painted PDF STEP
DH-40WHPJL 3.22-4.90 10% 1.15:1 0.2 3000 UDR40 PDR40 IP65 Al/Cu Chromate/Painted PDF STEP
DH-40WHPJU 3.22-4.90 10% 1.15:1 0.2 3000 UDR40 PDR40 IP65 Al/Cu Chromate/Painted PDF STEP
DH-48WHPJI 3.94-5.99 10% 1.15:1 0.2 3000 UDR48 PDR348 IP65 Al/Cu Chromate/Painted PDF STEP
DH-48WHPJL 3.94-5.99 10% 1.15:1 0.2 3000 UDR48 PDR348 IP65 Al/Cu Chromate/Painted PDF STEP
DH-48WHPJU 3.94-5.99 10% 1.15:1 0.2 3000 UDR48 PDR348 IP65 Al/Cu Chromate/Painted PDF STEP
DH-58WHPJI 4.64-7.05 10% 1.15:1 0.2 3000 UDR58 PDR58 IP65 Al/Cu Chromate/Painted PDF STEP
DH-58WHPJL 4.64-7.05 10% 1.15:1 0.2 3000 UDR58 PDR58 IP65 Al/Cu Chromate/Painted PDF STEP
DH-58WHPJU 4.64-7.05 10% 1.15:1 0.2 3000 UDR58 PDR58 IP65 Al/Cu Chromate/Painted PDF STEP
DH-70WHPJI 5.38-8.17 10% 1.15:1 0.2 2000 UDR70 PDR70 IP65 Al/Cu Chromate/Painted PDF STEP
DH-70WHPJL 5.38-8.17 10% 1.15:1 0.2 2000 UDR70 PDR70 IP65 Al/Cu Chromate/Painted PDF STEP
DH-70WHPJU 5.38-8.17 10% 1.15:1 0.2 2000 UDR70 PDR70 IP65 Al/Cu Chromate/Painted PDF STEP
DH-84WHPJI 6.57-9.99 10% 1.2:1 0.2 2000 UDR84/UBR84 PDR84/PBR84 IP65 Al/Cu Chromate/Painted PDF STEP
DH-84WHPJL 6.57-9.99 10% 1.2:1 0.2 2000 UDR84/UBR84 PDR84/PBR84 IP65 Al/Cu Chromate/Painted PDF STEP
DH-84WHPJU 6.57-9.99 10% 1.2:1 0.2 2000 UDR84/UBR84 PDR84/PBR84 IP65 Al/Cu Chromate/Painted PDF STEP
DH-100WHPJI 8.20-12.4 10% 1.2:1 0.2 2000 UDR100/UBR100 PDR100/PBR100 IP65 Al/Cu Chromate/Painted PDF STEP
DH-100WHPJL 8.20-12.4 10% 1.2:1 0.2 2000 UDR100/UBR100 PDR100/PBR100 IP65 Al/Cu Chromate/Painted PDF STEP
DH-100WHPJU 8.20-12.4 10% 1.2:1 0.2 2000 UDR100/UBR100 PDR100/PBR100 IP65 Al/Cu Chromate/Painted PDF STEP
DH-120WHPJI 9.84-15.0 10% 1.2:1 0.2 1000 UBR120 PBR120 IP65 Al/Cu Chromate/Painted PDF STEP
DH-120WHPJL 9.84-15.0 10% 1.2:1 0.2 1000 UBR120 PBR120 IP65 Al/Cu Chromate/Painted PDF STEP
DH-120WHPJU 9.84-15.0 10% 1.2:1 0.2 1000 UBR120 PBR120 IP65 Al/Cu Chromate/Painted PDF STEP
DH-140WHPJI 11.9-18.0 10% 1.25:1 0.2 2000 UBR140 PBR140 IP65 Al/Cu Chromate/Painted PDF STEP
DH-140WHPJL 11.9-18.0 10% 1.25:1 0.2 2000 UBR140 PBR140 IP65 Al/Cu Chromate/Painted PDF STEP
DH-140WHPJU 11.9-18.0 10% 1.25:1 0.2 2000 UBR140 PBR140 IP65 Al/Cu Chromate/Painted PDF STEP
DH-180WHPJI 14.5-22.0 10% 1.25:1 0.25 500 UBR180 PBR180 IP65 Al/Cu Chromate/Painted PDF STEP
DH-180WHPJL 14.5-22.0 10% 1.25:1 0.25 500 UBR180 PBR180 IP65 Al/Cu Chromate/Painted PDF STEP
DH-180WHPJU 14.5-22.0 10% 1.25:1 0.25 500 UBR180 PBR180 IP65 Al/Cu Chromate/Painted PDF STEP
DH-220WHPJI 17.6-26.7 10% 1.25:1 0.25 500 UBR220 PBR220 IP65 Al/Cu Chromate/Painted PDF STEP
DH-220WHPJL 17.6-26.7 10% 1.25:1 0.25 500 UBR220 PBR220 IP65 Al/Cu Chromate/Painted PDF STEP
DH-220WHPJU 17.6-26.7 10% 1.25:1 0.25 500 UBR220 PBR220 IP65 Al/Cu Chromate/Painted PDF STEP
DH-260WHPJI 21.7-33.0 10% 1.25:1 0.25 300 UBR260 PBR260 IP65 Al/Cu Chromate/Painted PDF STEP
DH-260WHPJL 21.7-33.0 10% 1.25:1 0.25 300 UBR260 PBR260 IP65 Al/Cu Chromate/Painted PDF STEP
DH-260WHPJU 21.7-33.0 10% 1.25:1 0.25 300 UBR260 PBR260 IP65 Al/Cu Chromate/Painted PDF STEP
DH-320WHPJI 26.3-40.0 10% 1.25:1 0.25 300 UBR320 PBR320 IP65 Al/Cu Chromate/Painted PDF STEP
DH-320WHPJL 26.3-40.0 10% 1.25:1 0.25 300 UBR320 PBR320 IP65 Al/Cu Chromate/Painted PDF STEP
DH-320WHPJU 26.3-40.0 10% 1.25:1 0.25 300 UBR320 PBR320 IP65 Al/Cu Chromate/Painted PDF STEP
Part Number Guide: DH-100WHPJI/L/UPMA400
"100"—Waveguide Size | WHP90
"WHPJ"—Waveguide Type | High Power Waveguide Rotating Joint
"I/L/U"— Joint Style | I, L, U-Shape
"P"— Flange Type | Rectangular Flat
"M"— Flange Type | Rectangular Grooved
"A/C"— Material | Aluminium, Cu
"400"— Power Rating | 400 W CW.
Note:
All Dolph-MW models include an surtec/corrosion protection treatment and are painted flat black. Flanges are unplated, polished and surtec. Other finishes and paint colors are available upon request.
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