Adapters,

Adapters,
WaveguidetoCoax,RightAngle
ATM manufactures Waveguide to Coax Adapters the Ka-Band frequency range for the download band 18.3-20.2GHz
and the upload band 27.5-31.0GHz. For more information feel free to call us and discuss your needs with one of our
design engineers.
GENERAL SPECIFICATIONS RECTANGULAR W/G TO COAX ADAPTERS
Electrical
VSWR:
Standard Models: 1.21 Max
Precision Models: 1.12 Max
RF Connectors: K-Type, SMA available
Mechanical
Body: Aluminum/Copper-Brass (per order)
Flanges: Multiple types available - see ATM Std. Flanges
Operation Temp:
Finish: Unique corrosion resistant 316 stainless steel epoxy
coating IAW MIL-F-14072
Options
Pressure seal Units: Units sealed to hold 10 psi. Add "-PT" to
model number.
example: P/N 51ka-251B-6 sealed becomes: 51ka-251B-6-PT
Ka-Band W/G - Coax Adapters
Downlink 18.3-20.2GHz, Uplink 27.5-31.0GHz
WG Size Freq (GHz)
Model No.*
Coax
Connector
VSWR
(Max.)
Power CW Peak Power Theoretical Outline
(Watts)
(kW)
I.L. (Max.)*** Drawing
WR51
18.3 - 20.2
51ka-251B-6
SMA-female
1.21
50
3
0.29
Dwg
WR51
18.3 - 20.2
51ka-25kB-6
Type K-Female
1.21
50
3
0.29
Dwg
WR42
18.3 - 20.2
42ka-251B-6
SMA-female
1.21
50
3
0.32
Dwg
WR42
18.3 - 20.2
42ka-25kB-6
Type K-Female
1.21
50
3
0.32
Dwg
WR34
27.5 - 31.0
34ka-25KB-6
Type-K female
1.21
10
3
0.35
Dwg
WR28
27.5 - 31.0
28ka-25KA-6
Type-K female
1.21
10
3
0.39
Dwg
Ka-Band Precision W/G - Coax Adapters
Downlink 18.3-20.2GHz, Uplink 27.5-31.0GHz
WG Size Freq (GHz)
Model No.*
Coax
Connector
VSWR Power CW Peak Power Theoretical Outline
(Max.)
(Watts)
(kW)
I.L. (Max.)*** Drawing
WR51
18.3 - 20.2
51ka-251PrB-6
SMA-female
1.12
50
3
0.29
Dwg
WR51
18.3 - 20.2
51ka-25kPrB-6
Type K-Female
1.12
50
3
0.29
Dwg
WR42
18.3 - 20.2
42ka-251PrB-6
SMA-female
1.12
50
3
0.32
Dwg
WR42
18.3 - 20.2
42ka-25kPrB-6
Type K-Female
1.12
50
3
0.32
Dwg
WR34
27.5 - 31.0
34ka-25KPrB-6
Type-K female
1.12
10
3
0.35
Dwg
WR28
27.5 - 31.0
28ka-25KPrA-6
Type-K female
1.12
10
3
0.39
Dwg
Ordering Information
WR - Mod
M
-F
42ka -251
A
-6
W/G - Coax Adapter, SMA
Example part number:
Waveguide Size: (WR) WR28 thru WR51
Basic Model No.: (-Mod)
Precision model: (-ModPr)
* The Standard Model Numbers above are the most common parts ordered for size, material and flange. However,
these models can easily be altered to accommodate your
needs by using the Model # code system to the le .
** All data given at 20° C and sea level.
***Insertion Loss for WG to coax adaptor is difficult to
measure due to the very low loss and setup. The max