SWD-2040H-15-DB

Final Rev 1.2

Description:
Model SWD-2040H-15-DB is a V-band, four-port
waveguide dual-directional coupler that delivers
a 20 dB nominal coupling level and 40 dB typicaldirectivity across the full waveguide band from50 to 75 GHz. The dual-directional coupler uses a
traditional multi-hole and split block design toachieve a flat coupling level, high directivity, andlow insertion loss. The waveguide interface ofthe coupler is WR-15 waveguides with UG-385/U Anti-Cocking flanges. Other coupling levels including
custom coupling levels and asymmetrical forward/reverse coupling levels are available under different
model numbers.

Features:••••

Applications:•••

Full Band Operation
Low Insertion Loss
High Directivity
Flat Coupling Level Across the Band

Test Labs
Instrumentations
Sub-assemblies

Electrical Specifications:Parameter
Frequency
Insertion Loss*
Coupling*Directivity*
Main Line Return Loss
Coupling Port Return Loss
Specification Temperature
Operating Temperature

Minimum
50 GHzTypicalSAGE Millimeter, Inc.

V-Band Waveguide Dual-Directional Coupler, 20 dB

Maximum
75 GHz

1.1 dB
20 dB
40 dB
25 dB
25 dB+25 ˚C-40 ˚C+85 ˚C*The definition of the insertion loss, coupling and directivity is shown as following. The required termination on thewaveguide port is 30 dB or better for accurate measurement.
* The actual directivity and return loss are higher than shown due to the limitations of the network analyzer’s dynamic range.
Insertion Loss = -10 log10 [(P2+P3)/P1] when P4 is terminated.
Coupling Value = -10 log10 [P3/P1] when P4 is terminated.
or -10 log10 [P4/P2] when P3 is terminated.

P4P1P3

Directivity = -10 log10 [P3/P2] when P1 and P4 are terminated.
Directivity = -10 log10 [P4/P1] when P2 and P4 are terminated.

P2P4
P1

P2
P3

www.eravant.com | 501 Amapola Ave, Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: support@eravant.com
Copyright © 2017 by Eravant

Page | 1

SWD-2040H-15-DBFinal Rev 1.2

SAGE Millimeter, Inc.

V-Band Waveguide Dual-Directional Coupler, 20 dB
Mechanical Specifications:
Item
Waveguide Ports
MaterialFinishWeightOutline

Specification
WR-15 Waveguide with UG-385/U Anti-Cocking Flange
BrassGold Plated
1.3 lbs.
WD-DB-V-A

Typical Performance vs. Frequency
0-5
Insertion Loss (Port 1)
Coupling (Port 1)
Insertion Loss (Port 2)
Coupling (Port 2)-10

Performance (dB)-15

Directivity (Port 1)
Return Loss (Port 1)
Directivity (Port 2)
Return Loss (Port 2)

-20
-25
-30
-35
-40
-45
-50
50

55

60

65

70

75

Frequency (GHz)www.eravant.com | 501 Amapola Ave, Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: support@eravant.com
Copyright © 2017 by Eravant

Page | 2

SWD-2040H-15-DB

Final Rev 1.2Mechanical Outline: (Unless otherwise specified, all dimensions are in inches [millimeters])

SAGE Millimeter, Inc.

V-Band Waveguide Dual-Directional Coupler, 20 dB

Note:
••
•

All data presented is collected from a sample lot. Actual data may vary unit to unit.
The insertion loss shown includes the loss due to coupling.
Eravant reserves the right to change the information presented without notice.

Caution:•Any foreign objects in the waveguide will cause performance degradation and possible device
damage.

www.eravant.com | 501 Amapola Ave, Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: support@eravant.com
Copyright © 2017 by Eravant

Page | 3