SAT-FA-28028-S1

Rev. 1.1

Description
Model SAT-FA-28028-S1 is a WR-28 orthomode transducer(OMT) that operates between 26.5 and 40 GHz. The OMTseparates a circular or elliptical polarized waveform into twolinear, orthogonal waveforms or combines two linear
polarized waveforms into one circular or elliptical polarized
waveform or vice versa. The OMT also supports either verticalor horizontal polarized waveguide forms. The OMT shows high port isolation while providing a lowinsertion loss. The OMT is configured with a 0.280” x 0.280” square waveguide for the antenna port andtwo WR-28 waveguides for the horizontal and vertical ports. All ports have standard UG-599/U flanges
and 4-40 threaded holes.

Features:•••

Applications:High Isolation
Low Insertion Loss
Full Band Performance

•
••
•
•

5G Systems
Radar Systems
Communication Systems
Antenna Ranges
Circular and Linear Waveform Separation
and Combination

Electrical Specifications:Parameter
Frequency Range
Insertion Loss (A to V Port)
Insertion Loss (A to H Port)
Isolation (V to H Port)
Return Loss (H Port)
Return Loss (V Port)
Return Loss (A Port, Vertical)
Return Loss (A Port, Horizontal)
Specification Temperature
Operating Temperature

Minimum
26.5 GHz

TypicalMaximum
40 GHzSAGE Millimeter, Inc.

WR-28 Orthomode Transducer

0.5 dB
0.5 dB
40 dB
15 dB
15 dB
15 dB
15 dB
+25 ˚C-40 ˚C+85 ˚C

Mechanical Specifications:
Item
Antenna Port
Horizontal and Vertical Ports
Flange Type
Material and Finish
WeightSize
OutlineSpecification
0.280” x 0.280” Square WaveguideWR-28 WaveguideUG-599/U Flange 4-40 Threaded HolesGold Plated Aluminum
2.3 Oz1.70” (L) x 1.25” (W) x 0.75” (H)AT-AS-280-F

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

Page | 1

SAT-FA-28028-S1

Rev. 1.1

Typical Performance vs. Frequency
00-1-4-2-8

Insertion Loss (dB)

Insertion Loss (V)-12-4-16
Isolation-5-20-6-24-7-28

-8-32

-9-36

-10

Isolation (dB)

Insertion Loss (H)

-3-40
26.5

2829.53132.53435.53738.540

Frequency (GHz)

SAGE Millimeter, Inc.

WR-28 Orthomode Transducer

Typical Return Loss vs. Frequency
0

Return Loss (Antenna Port Horizontal)
Return Loss (Antenna Port Vertical)
Return Loss (Horizontal Port)
Return Loss (Vertical Port)-5-10Return Loss (dB)

-15
-20
-25
-30
-35
-40
-45
26.5

28

29.5

31

32.5

34

35.5

37

38.5

40

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

Page | 2

SAT-FA-28028-S1

Rev. 1.1

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

Note:• All data presented is collected from a sample lot. Actual data may vary unit to unit.
• All testing was performed under +25˚C room temperature.
• Eravant reserves the right to change the information presented without notice.

SAGE Millimeter, Inc.

WR-28 Orthomode Transducer

Caution:•Any foreign objects in the antenna 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: sales@eravant.comCopyright © 2017 by Eravant

Page | 3