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Dolph Microwave
Waveguide Rotary Joints

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.

rotary waveguide joint
waveguide joints

Ordering Guide of Waveguide Rotary Joints

Ordering Information Waveguide Single Channel Rotary Joint


Ordering Information Waveguide Single Channel Rotary Joint


Ordering Information Waveguide Double 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.

Datasheet of Waveguide Rotary Joints

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


Diagram of Waveguide Rotary Joints

diagram of waveguide rotary joints 1
diagram of waveguide rotary joints 2
diagram of waveguide rotary joints 3
diagram of waveguide rotary joints 6
diagram of waveguide rotary joints 5
diagram of waveguide rotary joints 4

Different Shape of Waveguide Rotary Joints

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.

Different Shape of Waveguide Rotary Joints

Application of Waveguide Rotary Joints

Application of Waveguide Rotary Joints

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.


Other Standard Waveguide Components You may have interests in

waveguide pressure inlet

waveguide attenuator types

different types of waveguide attenuators

waveguide quick disconnect

magic tee in microwave engineering

waveguide o ring

coupling probes


Curious about Waveguide Components now?
Let's contact Dolph for more information!
No.333, Xingtai South Road, Weiyang Zone, Xi'an, China
sales@dolphmicrowave.com +86-2988810979