SAQ-403085-219-S1
Q-Band Spot-Focusing Lens Antenna, 40.1 GHz, 8.5”
Focal Length
SAQ-403085-219-S1 is a Q-Band spot-focusing lensantenna that delivers a nominal 3 dB spot size of 1” ata focal length of 8.5” at the fequency of 40.1 GHz. The
antenna employs a low loss lens to offer excellent aperture
efficiency at 40.1 GHz. The spot-focusing lens antenna isequipped with a 0.219” diameter circular waveguide and UG383/U-M flange as its antenna port. It supports Linear andCircular polarized waveforms.

Electrical Specifications:Parameter
Frequency
Frequency Bandwidth
Focal Length
Spot Size
Peak to First Null
Power Captured
Spot Size
10 dB Below PeakPower Captured
Spot Size
3 dB Below PeakPower Captured
Polarization
Return Loss
Specification Temperature
Operating Temperature

Minimum

TypicalMaximum
40.1 GHz±500 MHz
8.5”
2.4”
83.8%
1.7”
78.9%
1”
47.4%
Linear and Circular
14 dB+25 °C-40 °C+85 °C

Mechanical Specifications:
Item

EAR99

FEATURES••

Rugged Mechanical Configurations
High Efficiency and Low LossAPPLICATIONS••

Scientific Instruments
Material Research Instruments

SUPPLEMENTAL DETAILSSpecification

Antenna Port

0.219” Dia Circular Waveguide with UG-383/U-M
FlangeHorn/Lens Material

Aluminum/HDPE

FinishChem Film

Weight

0.5 OzLens Diameter

2.56”

Dimensions

3.44” (L) x 3.08” (Ø)

OutlineAQ-CQ-2.56-C219

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Copyright © 2023 by Eravant

ECCN

Final Rev 1.2

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SAQ-403085-219-S1
Mechanical Outline:
Unless otherwise specified, all dimensions are in inches [millimeters])

3.44 87.4

8 x 6-32 UNC - 2B3.08 78.2

0.25 6.4

1.60 40.6
2 x 45°0.219" CIRCULAR WAVEGUIDEW/ UG-383/U-M FLANGE

1.80 45.7

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.

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SAQ-403085-219-S1
Measured Return Loss vs. Frequency
0-5-10Return Loss (dB)

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

39

39.2

39.4

39.6

39.8

40

40.2

40.4

40.6

40.8

41

Frequency (GHz)

Theoretical Spot Size vs Frequency
2
1.8
1.6
3 dB Spot Size

Spot Size (inch)

1.4

10 dB Spot Size

1.2
10.8
0.6
0.4
0.2
026.3

26.4

26.5

26.6

26.7

26.8

Frequency (GHz)www.eravant.com | 424-757-0168 | support@eravant.com
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26.9

2727.1

27.2

27.3

SAQ-403085-219-S1
Focal Length Diagram:
Focal Length is defined in the diagram below with a pair of spot-focusing lens antennas
SPOT FOCUSING LENS ANTENNA FOCAL LENGTH DIAGRAM
SPOT FOCUSINGLENS ANTENNASEPARATION DISTANCE = 2 x f
FOCAL POINTff
f = FOCAL LENGTH

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Copyright © 2023 by Eravant

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SPOT FOCUSINGLENS ANTENNA