STA-30-42-M1

Rev 1.1

Description:
Model STA-30-42-M1 is a K-band level setting
attenuator that covers the frequency range from18 to 26.5 GHz. The attenuator features aprecision micrometer dial with a knurled headlocking screw, which allows for stable, repeatablesettings that can be locked at any attenuation
value. The level setting attenuator is an ideal pieceof equipment in waveguide systems wherebroadband attenuation is required. The
attenuator exhibits 0.2 dB typical insertion loss
and up to 30 dB nominal attenuation value acrossthe entire operating bandwidth. The other attenuator types, such as direct reading, programmable andfixed tuned attenuators are also available under different model numbers.

Features:••••Applications:

Full band Coverage from 18 to 26.5 GHz
Head Locking Screw
Precision Machined Housing
Convenient Level Setting•••

Test Lab
Instrumentations
Manual Test Set

SAGE Millimeter, Inc.

K-Band Level Setting Attenuator, Head Locking Screw, 18 to 26.5 GHz

Electrical Specifications:Parameter
Frequency
Insertion Loss
Attenuation
Return Loss
Power HandlingSpecification Temperature
Operating TemperatureMinimum
18 GHzTypical0.2 dB
30 dB
20 dB
1 W (CW)+25 ˚C-40 ˚CMaximum
26.5 GHz

1.2 W (CW)+85 ˚Cwww.sagemillimeter.com | 3043 Kashiwa Street, Torrance, CA 90505
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@sagemillimeter.com
Copyright © 2021 by SAGE Millimeter, Inc.

Page | 1

STA-30-42-M1

Rev 1.1

Mechanical Specifications:
Item

Specification
WR-42 Waveguide with UG-595/U Flange
Head Locking Screw Type Micrometer
0.5mm
0.01mm4.00”
BrassGold Plated
9.0 oz.
TA-MK

RF Ports
Setting TypeMicrometer Pitch
Micrometer Resolution
Insertion Length
Material
FinishWeightOutline

Typical Measured Attenuation vs Frequency
0-5

Attenuation (dB)

-10SAGE Millimeter, Inc.

K-Band Level Setting Attenuator, Head Locking Screw, 18 to 26.5 GHz

-15
-20
-25
-30
-35
-40
18

18.5

19

19.5

20

20.5

21

21.5

22

22.5

23

23.5

24

24.5

25

25.5

26

26.5

Frequency (GHz)
Insertion Loss

3 dB

6 dB

10 dB

20 dB

30 dB

www.sagemillimeter.com | 3043 Kashiwa Street, Torrance, CA 90505
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@sagemillimeter.com
Copyright © 2021 by SAGE Millimeter, Inc.

Page | 2STA-30-42-M1

Rev 1.1

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

SAGE Millimeter, Inc.

K-Band Level Setting Attenuator, Head Locking Screw, 18 to 26.5 GHz

Note:
••
•

•

All data presented is collected from a sample lot. Actual data may vary unit to unit.
All testing was performed under +25 °C case temperature.
For more information on the technical details of level-setting attenuators and other types ofwaveguide attenuators, a short instructional blog is available here (FIXED, LEVEL SETTING,DIRECT READING, AND PROGRAMMABLE ATTENUATORS)SAGE Millimeter, Inc. reserves the right to change the information presented without notice.

Caution:••••RF power should never exceed 1.2 W.
Forcing the micrometer down after encountering resistance may damage the dielectric sheet
inside. This will cause permanent performance degradation and decrease the long-term stabilityand repeatability of the device.
Attempting to adjust the micrometer setting while the head locking screw is engaged may damage
the micrometer and decrease the long-term stability and repeatability of the device.
Any foreign objects in the waveguide will cause performance degradation and may damage thedevice.
www.sagemillimeter.com | 3043 Kashiwa Street, Torrance, CA 90505
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@sagemillimeter.com

Copyright © 2021 by SAGE Millimeter, Inc.

Page | 3