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Waveguide Offset Short

1. 1/8 and 3/8 Wavelength Offset Short (Table 1)

2. 1/4 Wavelength Offset Short (Table 2)

1. 1/8 and 3/8 Wavelength Offset Short

Offset shorts with 1/8 and 3/8 wavelength offsets are considered one of the more accurate means of obtaining a 180° phase difference in waveguide. Using these single-piece devices will reduce the number of flange interfaces during calibration. This helps to maintain an essentially constant magnitude of current flow across the calibration plane.

The chart below lists the offset shorts available from A-INFO. Those in rectangular guide are nominally 1/8 and 3/8 wavelength offset at a frequency near the waveguide band center. These will not be the exact band center as the frequency is chosen to equalize the phase differences at the band edges.

These are also available with a custom shorting distance as a special order. Please send us your inquiry and discuss your needs.

The data is for reference only.

EIA WR

Freq. Range
(GHz)
1/8 Wavelength
Offset Short
3/8 Wavelength
Offset Short
Flange
Material
P/N
Offset
(mm)
P/N
Offset
(mm)

WR975

0.75-1.12

975WOFS18

54.09

975WOFS38

162.32

FDP9

Al

WR770

0.96-1.45

770WOFS18

41.43

770WOFS38

124.29

FDP12

Al

WR650

1.12-1.70

650WOFS18

35.81

650WOFS38

107.42

FDP14

Al

WR510

1.45-2.20

510WOFS18

27.3

510WOFS38

81.91

FDP18

Al

WR430

1.70-2.60

430WOFS18

23.34

430WOFS38

70.01

APF430/FDP22

Al

WR340

2.20-3.30

340WOFS18

18.02

340WOFS38

54.07

APF340/FDP26

Al

WR284

2.60-3.95

284WOFS18

15.23

284WOFS38

45.68

FDP32/APF284B/APF284/
APF284C/FAP32/FEP32

Al

WR229

3.30-4.90

229WOFS18

12.03

229WOFS38

36.1

APF229/APF229B/
FDP40/FAP40/FEP40

Al

WR187

3.95-5.85

187WOFS18

10.26

187WOFS38

30.77

FDP48/APF187/APF187C
/FAP48/FEP48

Al

WR159

4.90-7.05

159WOFS18

8.15

159WOFS38

24.46

APF159/APF159B/
FDP58/FAP58/FEP58

Al

WR137

5.85-8.20

137WOFS18

6.85

137WOFS38

20.54

FDP70/APF137/APF137C/
FAP70/FEP70

Al

WR112

7.05-10.0

112WOFS18

5.68

112WOFS38

17.03

APF112B/APF112/
FBP84/FDP84/FEP84

Al

WR90

8.20-12.4

90WOFS18_Cu

4.85

90WOFS38_Cu

14.55

APF90B/APF90/APF90A/
FBP100/FDP100/FEP100

Cu

WR75

10.0-15.0

75WOFS18_Cu

3.96

75WOFS38_Cu

11.87

APF75B/APF75A /
FBP120/FDP120

Cu

WR62

12.4-18.0

62WOFS18_Cu

3.22

62WOFS38_Cu

9.66

APF62/FBP140/FDP140

Cu

WR51

15.0-22.0

51WOFS18_Cu

2.65

51WOFS38_Cu

7.96

APF51C/FBP180/
APF51B/APF51A/FDP180

Cu

WR42

18.0-26.5

42WOFS18_Cu

2.22

42WOFS38_Cu

6.67

APF42/FBP220

Cu

WR34

22.0-33.0

34WOFS18_Cu

1.8

34WOFS38_Cu

5.41

FBP260/APF34

Cu

WR28

26.5-40.0

28WOFS18_Cu

1.51

28WOFS38_Cu

4.49

APF28/FBP320

Cu

WR22

33.0-50.0

22WOFS18_Cu

1.21

22WOFS38_Cu

3.6

APF22/FUGP400/APF22A

Cu

WR19

40.0-60.0

19WOFS18_Cu

0.99

19WOFS38_Cu

2.96

APF19/FUGP500/APF19A

Cu

WR15

50.0-75.0

15WOFS18_Cu

0.8

15WOFS38_Cu

2.4

APF15/FUGP620/APF15A

Cu

WR12

60.0-90.0

12WOFS18_Cu

0.67

12WOFS38_Cu

2.02

APF12/FUGP740/APF12A

Cu

WR10

75.0-110.0

10WOFS18_Cu

0.54

10WOFS38_Cu

1.62

APF10/FUGP900/APF10A

Cu

Please refer to the Standard Flange Information section for standerd flange type

Please refer to the Precision Flange Information section for precision flange type(APF)

 

2. 1/4 Wavelength Offset Short

The chart below lists the 1/4 offset shorts available from A-INFO. Those in rectangular guide are nominally 1/4 wavelength offset at a frequency near the waveguide band center. These will not be the exact band center as the frequency is chosen to equalize the phase differences at the band edges.

These are also available with a custom shorting distance as a special order. Please send us your inquiry and discuss your needs.

The data is for reference only.

EIA WR

Freq. Range
(GHz)

1/4 Wavelength Offset Short

Flange
Material

  P/N

Offset (mm)

WR975

0.75-1.12

975WOFS14

108.21

FDP9

Al

WR770

0.96-1.45

770WOFS14

82.86

FDP12

Al

WR650

1.12-1.70

650WOFS14

71.62

FDP14

Al

WR510

1.45-2.20

510WOFS14

54.61

FDP18

Al

WR430

1.70-2.60

430WOFS14

46.68

APF430/FDP22

Al

WR340

2.20-3.30

340WOFS14

36.05

APF340/FDP26

Al

WR284

2.60-3.95

284WOFS14

30.45

FDP32/APF284B/APF284/
APF284C/FAP32/FEP32

Al

WR229

3.30-4.90

229WOFS14

24.06

APF229/APF229B/
FDP40/FAP40/FEP40

Al

WR187

3.95-5.85

187WOFS14

20.51

FDP48/APF187/APF187C
/FAP48/FEP48

Al

WR159

4.90-7.05

159WOFS14

16.31

APF159/APF159B/
FDP58/FAP58/FEP58

Al

WR137

5.85-8.20

137WOFS14

13.69

FDP70/APF137/APF137C/
FAP70/FEP70

Al

WR112

7.05-10.0

112WOFS14

11.36

APF112B/APF112/
FBP84/FDP84/FEP84

Al

WR90

8.20-12.4

90WOFS14_Cu

9.7

APF90B/APF90/APF90A/
FBP100/FDP100/FEP100

Cu

WR75

10.0-15.0

75WOFS14_Cu

7.91

APF75B/APF75A /
FBP120/FDP120

Cu

WR62

12.4-18.0

62WOFS14_Cu

6.44

APF62/FBP140/FDP140

Cu

WR51

15.0-22.0

51WOFS14_Cu

5.31

APF51C/FBP180/
APF51B/APF51A/FDP180

Cu

WR42

18.0-26.5

42WOFS14_Cu

4.45

APF42/FBP220

Cu

WR34

22.0-33.0

34WOFS14_Cu

3.6

FBP260/APF34

Cu

WR28

26.5-40.0

28WOFS14_Cu

2.99

APF28/FBP320

Cu

WR22

33.0-50.0

22WOFS14_Cu

2.4

APF22/FUGP400/APF22A

Cu

WR19

40.0-60.0

19WOFS14_Cu

1.97

APF19/FUGP500/APF19A

Cu

WR15

50.0-75.0

15WOFS14_Cu

1.6

APF15/FUGP620/APF15A

Cu

WR12

60.0-90.0

12WOFS14_Cu

1.35

APF12/FUGP740/APF12A

Cu

WR10

75.0-110.0

10WOFS14_Cu

1.08

APF10/FUGP900/APF10A

Cu

Please refer to the Standard Flange Information section for standerd flange type

Please refer to the Precision Flange Information section for precision flange type(APF)

 

Download all waveguide offset short catalog

 

 

 

 

 

 

 

  
 
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Last updated 2017-07-27