Section 3. Rotary Joints. Introduction

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Elisabeth Brooks
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Section Rotary Joints Introduction For more than

and is one of the major suppliers in both domestic

Many of the larger military systems use custom

We are proud of this and continue to fully support

that produce these high quality components.

1 Section Rotary Joints Introduction For more than forty years, MDL has produced waveguide rotary joints and is one of the major suppliers in both domestic and overseas markets. Many of the larger military systems use custom designed MDL joints. We are proud of this and continue to fully support the experienced engineering and manufacturing groups that produce these high quality components. This catalog lists some of our outstanding models. MDL s engineering group is experienced in developing specials to meet your specific requirements.

2 Ordering Information * Diameter Example: 90RU116-20P-I-E-M Length Terminal #2 A Basic model number is shown in the catalog for each style and frequency range. In ordering, specify this model number plus: 1. Power Level & Pressure at which the point will be operated. The peak power ratings specified are based on the use of dry air or nitrogen and a pulse length of 2.75µ sec. Higher levels can be achieved using special dielectric gases. Contact our engineering department for cw ratings. 2. Material Aluminum or brass are standard.. Flange Terminations Specify the flange types at the fixed and moveable arms. Flanges per MIL-F-922 are standard but others can be supplied on special order. 4. Finish The standard finish for aluminum joints is an iridite coating per MIL-C Brass models are silver plated per MIL-QQ-S-65A. A blue paint, per Federal Standard, 595, color #25109, may be applied if requested. Other metal finishes and paints are available. 5. Mounting Flange A mounting flange attached to the fixed arm with the center line at one half the height dimension may be supplied on request. Standard flanges are shown on the proceeding page. Others can be supplied on special order. 6. Leak Rate The standard leak rate for pressurized units is 10 SCCM. MODEL NUMBER Pressurized for 20PSIG. Number indicates desired pressure For non-pressurized, omit numerals and P. PRESSURIZED Flange Termination - 2 Flanges Flange Port 1 Port 2 Arm Arm 1 Cover Cover 2 Cover Choke Choke Cover 4 Choke Choke TERMINAL FLANGE MATERIAL 90RU116-20P - I - E - M MOUNTING FLANGE Material and Finish Code Material Finish C Aluminum Alloy Chromated D Copper Alloy Silver Plated E Aluminum Alloy Chromated and Painted Blue F Copper Alloy Silver Plated and Painted Blue Flange Termination - 4 Flanges Flange Port 1 Port 2 Port Port 4 1 Cover Cover Cover Cover 2 Cover Cover Cover Choke Cover Cover Choke Cover 4 Cover Cover Choke Choke 5 Cover Choke Cover Cover 6 Cover Choke Cover Choke 7 Cover Choke Choke Cover 8 Cover Choke Choke Choke 9 Choke Cover Cover Cover 10 Choke Cover Cover Choke 11 Choke Cover Choke Cover 12 Choke Cover Choke Choke 1 Choke Choke Cover Cover 14 Choke Choke Cover Choke 15 Choke Choke Choke Cover 16 Choke Choke Choke Choke Mounting Flange For joints without flanges, omit numerals and M. BAND A B C NO OF DIA. DIA. DIA. HOLES WR WR WR WR WR WR WR WR WR WR WR WR WR * MDL reserves the right to discontinue or change specifications without notice.

3 Mounting Flange Configurations Circumferential location of equally spaced holes are as follows: 4 HOLES "B" DIA. TYP. ON "C" DIA. B.C. W/G OPENINGS STYLE I STYLE F STYLE U AND STYLE L "A" DIA..25 FLANGE TERMINATION 6 HOLES "B" DIA. TYP. ON "C" DIA. B.C. W/G OPENINGS STYLE I STYLE F STYLE U AND STYLE L "A" DIA..25 FLANGE TERMINATION 8 HOLES "B" DIA. TYP. ON "C" DIA. B.C. W/G OPENINGS STYLE I STYLE F STYLE U AND STYLE L "A" DIA..25 FLANGE TERMINATION

4 U Style Rotary Joints U Style, two arms are 90º to the rotating axis, one is fixed to the housing-one free to rotate. BAND FREQ. MDL VSWR WOW INSERTION PEAK POWER CW HOUSING HGT LTH RANGE MODEL MAX LOSS AT DIA. GHz MAX WR RU WR RU RU RU RU W 1.6 WR RU W RU W RU W WR RU WR RU RU RU RU RU RU RU RU RU RU RU RU RU RU KW WR RU KW RU KW RU KW WR RU RU RU RU RU RU RU RU RU RU KW WR RU KW RU W Length Diameter Terminal #2

5 U Style Rotary Joints BAND FREQ. MDL VSWR WOW INSERTION PEAK POWER CW HOUSING HGT LTH RANGE MODEL MAX LOSS AT DIA. GHz MAX WR RU RU RU RU RU RU RU RU RU RU KW RU KW.50 WR RU RU RU RU WR RU WR RU RU RU WR RU WR RU Length Diameter Terminal #2

6 L Style Rotary Joints L Style, one 90º arm fixed to the housing-one inline arm is free to rotate. BAND FREQ. MDL VSWR WOW INSERTION PEAK POWER CW HOUSING HGT LTH RANGE MODEL MAX LOSS AT DIA. GHz MAX WR RL WR RL W WR RL WR RL W WR RL RL RL RL RL RL RL RL RL RL RL RL RL WR RL W RL W RL W RL KW WR RL RL RL RL RL RL RL RL RL RL WR RL RL RL RL RL RL RL Length Diameter

7 L Style Rotary Joints BAND FREQ. MDL VSWR WOW INSERTION PEAK POWER CW HOUSING HGT LTH RANGE MODEL MAX LOSS AT DIA. GHz MAX WR RL RL RL RL KW WR RL WR RL RL RL RL KW WR RL WR RL RL RL KW Length Diameter Terminal #2

8 Diameter F Style Rotary Joints F Style, one inline arm is fixed to the housing-one 90º arm is free to rotate. BAND FREQ. MDL VSWR WOW INSERTION PEAK POWER CW HOUSING HGT LTH RANGE MODEL MAX LOSS AT DIA. GHz MAX WR RF WR RF WR RF RF RF RF RF RF RF RF RF RF RF RF RF WR RF W RF KW WR RF RF RF RF RF RF RF RF RF RF WR RF RF RF RF RF RF RF WR RF RF RF WR RF WR RF RF RF WR RF WR RF RF Length

9 I Style Rotary Joints I (inline) Style, two opposite arms concentric with the axis of rotation-one fixed to the housing-one free to rotate. BAND FREQ. MDL VSWR WOW INSERTION PEAK POWER CW HOUSING HGT RANGE MODEL MAX MAX LOSS AT DIA. GHz MAX WR RJ WR RJ WR RJ RJ RJ RJ RJ RJ RJ RJ RJ RJ RJ RJ RJ LM WR RJ RJ W WR RJ RJ RJ RJ RJ RJ RJ RJ RJ RJ WR RJ RJ RJ RJ RJ RJ RJ RJ RJ WR RJ RJ RJ RJ KW RJ KW WR RJ Diameter

10 I Style Rotary Joints BAND FREQ. MDL VSWR WOW INSERTION PEAK POWER CW HOUSING HGT RANGE MODEL MAX MAX LOSS AT DIA. GHz MAX WR RJ RJ RJ WR RJ WR RJ RJ RJ RJ RJ KW Diameter Terminal #2

11 Dual Channel Rotary Joints Dual Channel, two concentric, electrically isolated (50 db min.) transmission lines are designed to maintain electrical continuity for two signal paths during simultaneous rotation. Similarly a tri-channel provides three distinct isolated paths while rotated. BAND TRANSMISSION FREQ. MDL VSWR WOW INSERTION PEAK POWER CW HOUSING HGT HGT LINE RANGE MODEL MAX LOSS AT DIA. 0.C.* I.C.* GH Z MAX WR62 O.C RD I.C O.C RD I.C O.C RD I.C O.C RD I.C WR75 O.C RD I.C O.C RD W I.C WR90 O.C RD I.C O.C RD I.C WR102 O.C RD KW I.C W WR112 O.C RD I.C O.C RD I.C O.C RD I.C O.C RD I.C O.C RD I.C O.C RD KW 2.25 I.C Notes: Type SMA Inner Channel Type N Inner Channel * O.C. = Outer Channel (High Power, larger diameter channel) * I.C. = Inner Channel (Low Power, Smaller diameter channel)

12 Dual Channel Rotary Joints BAND TRANSMISSION FREQ. MDL VSWR WOW INSERTION PEAK POWER CW HOUSING HGT HGT LINE RANGE MODEL MAX LOSS AT DIA. O.C.* I.C.* GHz MAX WR17 O.C RD I.C O.C RD W 2.62 I.C O.C RD KW 2.25 I.C WR187 O.C RD I.C O.C RD I.C O.C RD I.C O.C RD I.C WR284 O.C RD I.C O.C RD I.C O.C RD I.C Notes: Type SMA Inner Channel Type N Inner Channel * O.C. = Outer Channel (High Power, larger diameter channel) * I.C. = Inner Channel (Low Power, Smaller diameter channel) Terminal # (Inner Channel) (Outer Channel) Terminal #2 (Outer Channel) O.C.* I.C. * Terminal # (Inner Channel) (Outer Channel) Terminal #2 (Outer Channel) Terminal #4 (Inner Channel) O.C.* I.C Terminal #4 (Inner Channel) FIGURE 2 FIGURE 1

Single Channel Coaxial Rotary Joints MDL s short, low torque, high performance coaxial rotary joints as well as our extensive line of waveguide rotary joints have set the standards of the industry.

13 Single Channel Coaxial Rotary Joints MDL s short, low torque, high performance coaxial rotary joints as well as our extensive line of waveguide rotary joints have set the standards of the industry. Our long experience in the design and manufacture of slip rings enables us to develop low resistance, low noise contacts for coaxial rotary joints. This contact, the heart of the short, low torque design, has a proven advantage of long life. These coaxial rotary joints meet or exceed MIL-E-5400 and MIL-E specifications. TYPE N SMA Single Channel Coaxial Rotary Joints CONNECTION FREQ. MDL VSWR WOW INSERTION HOUSING HGT BAND* RANGE MODEL MAX MAX LOSS DIA. GHz MAX 2.9 mm DC RS mm RS SMA DC RS TYPE N DC RK Notes: *Female/female DWG Dual Channel Coaxial Rotary Joints CONNECTION TRANSMISSION FREQ. MDL VSWR WOW INSERTION HOUSING HGT BAND RANGE MODEL MAX MAX LOSS DIA. O.C.* MAX SMA CHAN 1 DC RCD CHAN 2 DC SMA CHAN 1 DC RCD CHAN 2 DC SMA CHAN 1 DC RCD CHAN 2 DC SMA CHAN 1 DC RCD CHAN 2 DC SMA CHAN 1 DC RCD CHAN 2 DC Type N CHAN 1 DC RKD CHAN 2 DC Notes: Add M to part number to desiginate mounting flange.

14 Dual Channel Model 180RCD DIA TYP DIA. (4) PL. ON A 1.6 DIA. B.C. ROTATING.69 STATIONARY DIA DIA. (4) PL. ON A 1.6 DIA. B.C. Model 180RCD DIA TYP..9 TYP. ROTATING.69 STATIONARY DIA DIA. (4) PL. ON A 1.6 DIA. B.C..25 Model 180RCD DIA TYP..9 TYP..87 ROTATING.69 STATIONARY DIA DIA. (4) PL. ON A 1.6 DIA. B.C. Model 180RCD DIA TYP..9 TYP. ROTATING.69 STATIONARY DIA TYP 1.60 Model 180RCD CH 1 CH 2 ROTATING STATIONARY (4) TYPE N LE CONNECTORS STATIONARY ROTATING Model 120RKD DIA. TYP DIA. (6).144 DIA. HOLES, EQ. SPCD. ON A 2.88 DIA. B.C.

Section 16. Short Slot Hybrids. Theory

Section 16. Short Slot Hybrids. Theory Section Short Slot Hybrids Theory FIGURE 1 COUPLER TERMINOLOGY Coupling = Ratio A to C Balance = Ratio B to C Directivity = Ratio C to D Isolation = Ratio A to D Isolation = Coupling + Directivity PHASE