Atm Inc. - W/G Components -> Waveguide Windows

Rectangular W/G - Shims

GENERAL SPECIFICATIONS

Electrical

VSWR:
1.03 Max. WR650-WR42
1.05 Max. WR34-WR28

Mechanical

Construction: Aluminum or Brass/Copper per order

Pressure:
30 psi WR28 thru WR137 models
10 psi WR159 thru WR430 models

Connectors: Stainless Steel

Finish: Unique corrosion resistant 316 stainless steel epoxy coating IAW MIL-F-14072

WG
Size

Freq. (Ghz.)

Solid Shims
Model No.*

Laminated Shims
Model No.**

WR650

1.00 - 1.70

650-121A-0.250-2-2

On Request

WR430

1.70 - 2.60

430-121A-0.250-2-2

On Request

WR340

2.20 - 3.30

340-121A-0.250-2-2

On Request

WR284

2.60 - 3.95

284-121A-0.100-6-6

284-122A-0.125-6-6

WR229

3.30 - 4.90

229-121A-0.100-2-2

229-122A-0.125-2-2

WR187

3.95 - 5.85

187-121A-0.100-6-6

187-122A-0.125-6-6

WR159

4.90 - 7.05

159-121A-0.100-2-2

159-122A-0.125-2-2

WR137

5.85 - 8.20

137-121A-0.100-2-2

137-122A-0.125-2-2

WR112

7.05 - 10.0

112-121A-0.100-6-6

112-122A-0.125-6-6

WR102

7.0 - 11.0

102-121A-0.050-6-6

102-122A-0.125-6-6

WR90

8.20 - 12.4

90-121A-0.050-6-6

90-122A-0.125-6-6

LAMINATED SHIM

Laminated shim material is produced by
surface-bonding with a resin adhesive, individual
layers of precision metal foil (.002" or .003")
into sheets whose total thickness can range
from .006" to .125". The bond is made by heat
and pressure. An optimal hardening of resin
is obtained and the bonding agent is reduced
to such proportions that in can no longer be measured.

WR75

10.0 - 15.0

75-121A-0.050-6-6

75-122A-0.125-6-6

WR62

12.4 - 18.0

62-121A-0.050-6-6

62-122A-0.125-6-6

WR51

15.0 - 22.0

51-121A-0.050-6-6

51-122A-0.125-6-6

WR42

18.0 - 26.5

42-121A-0.050-6-6

42-122A-0.125-6-6

WR34

22.0 - 33.0

34-121A-0.050-6-6

34-122A-0.125-6-6

WR28

26.5 - 40.0

28-121A-0.050-6-6

28-122A-0.125-6-6

WR22

33.0 - 50.0

22-121A-0.050-6-6

22-122A-0.125-6-6

Example P/N:
340-121A-0.250-2-2 is WR340 solid shim Aluminum material - 0.250" thick - CPRF Flg. Style
340-122A-0.125-2-2 is WR340 laminated shim Aluminum material - 0.125" thick - CPRF Flg Style

Ordering Information	WR	- Mod	- M	-L	- F1	- F2
W/G shims
Example part number:	90	-121	A	-0.100	-6	-6
Waveguide Size: (WR) WR28 thru WR650
Basic Model No.: (-Mod) 121=Solid Shim, 122=Laminated Shim
Material (M): A=Aluminum, B=Copper/Brass
Length in inches (-L):
Flange 1 (-F1): 2=CPRF, 6=Cover, (1=CPRG 8=Cover-Groove for Solid Shim only)
Flange 1 (-F2): 2=CPRF, 6=Cover, (1=CPRG 8=Cover-Groove for Solid Shim only) See ATM Standard Flange page for more info.

*The standard model numbers above are the minimum thickness solid shims with most common flat flange. However, these models can easily be altered to accomodate your needs by using the Model # code system to the left.

**Laminated Shims are available at standard sizes and can be adjusted by removing layers in 0.003" increments. They are only available with flat flange faces.

Waveguide Assemblies,

Rectangular W/G, Shims