Dolph Microwave Rotary Joints (rotary couplers) are used to transmit microwave energy from stationary lines to rotating lines. The rotary joint is an electro-mechanical device with RF performance dependent upon rigorous electrical and mechanical design. Both single and dual channel type are optional. Available styles are defined by physical geometry as follows:
I- style - Two in-line arms both collinear with the axis of rotation.
L-style - One arm is perpendicular to the axis of rotation.
U-style - Both arms are perpendicular to the axis of rotation.
Ordering Information Waveguide Single Channel Rotary Joint
Ordering Information Waveguide Double Channel Rotary Joint
Flange type: Multiple types available - see Dolph Microwave Flanges page.
Finish: Corrosion protection plus black top coat.
Model No | Freq Range (GHz) | Operating Bandwidth (MHz) | VSWR (Max) | VSWR WOW | IL(dB) (Max) | IL WOW (dB) | WG Type | Material | |
IEC | EIA | ||||||||
DH-32WRJI | 2.60-3.95GHz waveguide rotary joints | 200 | 1.20 | 0.05 | 0.3 | 0.1 | R32 | WR284 | Al/Cu |
DH-32WRJL | 2.60-3.95GHz waveguide rotary joints | 200 | 1.20 | 0.05 | 0.3 | 0.1 | R32 | WR284 | Al/Cu |
DH-32WRJU | 2.60-3.95GHz waveguide rotary joints | 200 | 1.20 | 0.05 | 0.3 | 0.1 | R32 | WR284 | Al/Cu |
DH-40WRJI | 3.22-4.90GHz waveguide rotary joints | 200 | 1.20 | 0.05 | 0.3 | 0.1 | R40 | WR229 | Al/Cu |
DH-40WRJL | 3.22-4.90GHz waveguide rotary joints | 200 | 1.20 | 0.05 | 0.3 | 0.1 | R40 | WR229 | Al/Cu |
DH-40WRJU | 3.22-4.90GHz waveguide rotary joints | 200 | 1.20 | 0.05 | 0.3 | 0.1 | R40 | WR229 | Al/Cu |
DH-48WRJI | 3.94-5.99GHz waveguide rotary joints | 200 | 1.20 | 0.05 | 0.3 | 0.1 | R48 | WR187 | Al/Cu |
DH-48WRJL | 3.94-5.99GHz waveguide rotary joints | 200 | 1.20 | 0.05 | 0.3 | 0.1 | R48 | WR187 | Al/Cu |
DH-48WRJU | 3.94-5.99GHz waveguide rotary joints | 200 | 1.20 | 0.05 | 0.3 | 0.1 | R48 | WR187 | Al/Cu |
DH-58WRJI | 4.64-7.05GHz waveguide rotary joints | 300 | 1.25 | 0.05 | 0.25 | 0.1 | R58 | WR159 | Al/Cu |
DH-58WRJL | 4.64-7.05GHz waveguide rotary joints | 300 | 1.25 | 0.05 | 0.25 | 0.1 | R58 | WR159 | Al/Cu |
DH-58WRJU | 4.64-7.05GHz waveguide rotary joints | 300 | 1.25 | 0.05 | 0.25 | 0.1 | R58 | WR159 | Al/Cu |
DH-70WRJI | 5.38-8.17GHz waveguide rotary joints | 700 | 1.25 | 0.05 | 0.25 | 0.1 | R70 | WR137 | Al/Cu |
DH-70WRJL | 5.38-8.17GHz waveguide rotary joints | 700 | 1.25 | 0.05 | 0.25 | 0.1 | R70 | WR137 | Al/Cu |
DH-70WRJU | 5.38-8.17GHz waveguide rotary joints | 700 | 1.25 | 0.05 | 0.25 | 0.1 | R70 | WR137 | Al/Cu |
DH-84WRJI | 6.57-9.99GHz waveguide rotary joints | 300 | 1.20 | 0.05 | 0.3 | 0.1 | R84 | WR112 | Al/Cu |
DH-84WRJL | 6.57-9.99GHz waveguide rotary joints | 300 | 1.20 | 0.05 | 0.3 | 0.1 | R84 | WR112 | Al/Cu |
DH-84WRJU | 6.57-9.99GHz waveguide rotary joints | 300 | 1.20 | 0.05 | 0.3 | 0.1 | R84 | WR112 | Al/Cu |
DH-100WRJI | 8.20-12.4GHz waveguide rotary joints | 300 | 1.20 | 0.05 | 0.3 | 0.1 | R100 | WR90 | Al/Cu |
DH-100WRJL | 8.20-12.4GHz waveguide rotary joints | 300 | 1.20 | 0.05 | 0.3 | 0.1 | R100 | WR90 | Al/Cu |
DH-100WRJU | 8.20-12.4GHz waveguide rotary joints | 300 | 1.20 | 0.05 | 0.3 | 0.1 | R100 | WR90 | Al/Cu |
DH-120WRJI | 9.84-15.0GHz waveguide rotary joints | 500 | 1.25 | 0.05 | 0.3 | 0.1 | R120 | WR75 | Al/Cu |
DH-120WRJL | 9.84-15.0GHz waveguide rotary joints | 500 | 1.25 | 0.05 | 0.3 | 0.1 | R120 | WR75 | Al/Cu |
DH-120WRJU | 9.84-15.0GHz waveguide rotary joints | 500 | 1.25 | 0.05 | 0.3 | 0.1 | R120 | WR75 | Al/Cu |
DH-140WRJI | 11.9-18.0GHz waveguide rotary joints | 1000 | 1.3 | 0.05 | 0.4 | 0.1 | R140 | WR62 | Al/Cu |
DH-140WRJL | 11.9-18.0GHz waveguide rotary joints | 1000 | 1.3 | 0.05 | 0.4 | 0.1 | R140 | WR62 | Al/Cu |
DH-140WRJU | 11.9-18.0GHz waveguide rotary joints | 1000 | 1.3 | 0.05 | 0.4 | 0.1 | R140 | WR62 | Al/Cu |
DH-180WRJI | 14.5-22.0GHz waveguide rotary joints | 1000 | 1.3 | 0.05 | 0.4 | 0.1 | R180 | WR51 | Al/Cu |
DH-180WRJL | 14.5-22.0GHz waveguide rotary joints | 1000 | 1.3 | 0.05 | 0.4 | 0.1 | R180 | WR51 | Al/Cu |
DH-180WRJU | 14.5-22.0GHz waveguide rotary joints | 1000 | 1.3 | 0.05 | 0.4 | 0.1 | R180 | WR51 | Al/Cu |
DH-220WRJI | 17.6-26.7GHz waveguide rotary joints | 2000 | 1.4 | 0.05 | 1.0 | 0.1 | R220 | WR42 | Al/Cu |
DH-220WRJL | 17.6-26.7GHz waveguide rotary joints | 2000 | 1.4 | 0.05 | 1.0 | 0.1 | R220 | WR42 | Al/Cu |
DH-220WRJU | 17.6-26.7GHz waveguide rotary joints | 2000 | 1.4 | 0.05 | 1.0 | 0.1 | R220 | WR42 | Al/Cu |
DH-260WRJI | 21.7-33.0GHz waveguide rotary joints | 2000 | 1.4 | 0.05 | 1.0 | 0.1 | R260 | WR34 | Al/Cu |
DH-260WRJL | 21.7-33.0GHz waveguide rotary joints | 2000 | 1.4 | 0.05 | 1.0 | 0.1 | R260 | WR34 | Al/Cu |
DH-260WRJU | 21.7-33.0GHz waveguide rotary joints | 2000 | 1.4 | 0.05 | 1.0 | 0.1 | R260 | WR28 | Al/Cu |
DH-320WRJI | 26.3-40.0GHz waveguide rotary joints | 2000 | 1.4 | 0.05 | 1.0 | 0.1 | R320 | WR28 | Al/Cu |
DH-320WRJL | 26.3-40.0GHz waveguide rotary joints | 2000 | 1.4 | 0.05 | 1.0 | 0.1 | R320 | WR28 | Al/Cu |
DH-320WRJU | 26.3-40.0GHz waveguide rotary joints | 2000 | 1.4 | 0.05 | 1.0 | 0.1 | R320 | WR28 | Al/Cu |
The Rotary Joints can have divided into 3 shapes based on the port position. Selection is based on system application and space.
"U-shape" is both waveguide ports at a right angle to the rotational axis.
"L-shape" is one waveguide port is 90 degree with the other.
"I-shape" is both waveguide ports in line.
Waveguide rotary joint mainly is for microwave communications to connect different types of waveguides components. Electrical continuous performance is achieved by a chokes to eliminate metal contacts in rotary location. It is used to transmit RF signals between stationary and movable parts of a system. During operation, a stationary RF line needs to be connected to moving components of a system while rotary Joints allow these types of connections with low losses and minimal variation in performance while they are rotating. These rotary joints have waveguide interface on both input and output port. One is rotated while the other one is fixed. In addition, rotary joint operating frequency is limited by the waveguide size.
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