SAG-6838634501-125-S1
E-Band Gaussian Optics Antenna, 68 to 86 GHz, 12”

SAG-6838634501-125-S1 is a 12” E-Band Gaussian antenna thatoperates from 68 to 86 GHz. The Gaussian antenna delivers a 45
dBi nominal gain and 1.0 degree half power beamwidth. The antenna
supports both linear and circular polarized waveforms and employsa corrugated feed horn to offer excellent aperture efficiency, highcross polarization rejections, and low sidelobes levels. This model isequipped with a 0.125” diameter circular waveguide and UG-387/U-M
flange as its input port. By adding a mode transition, Eravant model
number SWT-12125-SB, the input port becomes WR-12 waveguide,
which can only support linear polarized waveforms.

Electrical Specifications:Parameter
Frequency

Minimum

TypicalMaximum

68 GHz77

86 GHzGain

45 dBi3 dB Beamwidth

1.0°Sidelobes-25 dB

Polarization

Linear and Circular

Return Loss

15 dB

Specification Temperature+25 °COperating Temperature

ECCN
EAR99

FEATURES-40 °C•••+85 °C

Center Fed
Low Sidelobes
Low Cross Polarization

APPLICATIONS•••

Radar Systems
Communication Systems
Plasma SystemsMechanical Specifications:
Item
Antenna Port

Specification
0.125” Dia Circular Waveguide with UG-387/U-M Flange

Housing MaterialAluminum

Housing Finish

Black Anodized

Weight19.5 lbs

Lens Diameter

12”

Dimensions

13.00” (Ø) x 16.17” (L)Outline

AG-CE45-125

www.eravant.com | 424-757-0168 | support@eravant.com
Copyright © 2022 by Eravant

SUPPLEMENTAL DETAILS

Final Rev 1.2

1/5

SAG-6838634501-125-S1
Mechanical Outline:
Unless otherwise specified, all dimensions are in inches [millimeters])
16.17 410.7
12.80 325.1

13.00 330.2

0.72 18.2

13.00 330.2

2 x 12.10 307.3
2 x 0.70 17.8
4 x 1/4-20 UNC

0.125" CIRCULAR WAVEGUIDEW/ UG-387/U-M FLANGE

0.50 12.7

2 x 6.90 175.3

CL2 x 8.30 210.8

NOTE:
••
•

On condition that test data is provided it is collected from a sample lot. Actual data may vary slightly
from unit to unit. All testing is performed under +25 °C room temperature.
On condition that simulated test data is provided, actual measured data may slightly vary.
Eravant reserves the right to change the information presented without notice.

CAUTION:••••

If a waveguide is present, any foreign objects in the waveguide will cause performance degradationand may damage or destroy the unit.
Any foreign objects in the antenna will cause performance degradation and possible device
damage.
For 1 mm connectors proper torque should be applied: 4.0 ± 0.15 inch-pounds (0.45 ± 0.02 Nm).
Torque wrench model SCH-06004-S1 is highly recommended.
For 1.35 mm, 1.85 mm, 2.4 mm, 2.92 mm, and SMA connectors proper torque should beapplied: 8.0 ± 0.15 inch-pounds (0.90 ± 0.02 Nm). Torque wrench model SCH-08008-S1 is highly
recommended.

www.eravant.com | 424-757-0168 | support@eravant.com
Copyright © 2022 by Eravant

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SAG-6838634501-12-S1
Typical Antenna Pattern @ 68 GHz
5040E-Plane
H-Plane30

Gain (dBi)20100-10-20-30-40-90-80-70-60-50-40-30-20-1001020

30

40

50

60

708090708090Boresight Angle (Degree)

Typical Antenna Pattern @ 77 GHz
6050E-Plane

40H-Plane

Gain (dBi)3020100-10-20-30-40-90-80-70-60-50-40-30-20-10010

Boresight Angle (Degree)

www.eravant.com | 424-757-0168 | support@eravant.com
Copyright © 2022 by Eravant

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Typical Antenna Pattern @ 86 GHz
60
50E-Plane

40H-Plane

Gain (dBi)3020100-10-20-30-40-90-80-70-60-50-40-30-20-100102030

4050

60

7080

90

Boresight Angle (Degree)

Typical Gain vs. Frequency
504948Gain (dBi)4746454443
4241406870

72747678

Frequency (GHz)www.eravant.com | 424-757-0168 | support@eravant.com
Copyright © 2022 by Eravant

4/580828486

SAG-6838634501-12-S1
Typical Return Loss Vs Frequency
0-5Return Loss (dB)

-10-15-20-25-30-35

68

69

70

71

72

73

74

75

76

77

78

Frequency (GHz)www.eravant.com | 424-757-0168 | support@eravant.com
Copyright © 2022 by Eravant

5/57980818283848586