STA-60-12-P1

Final Rev 2.5

Description:
Model STA-60-12-P1 is a motorized, general purpose
programmable rotary vane attenuator for use inmillimeterwave systems across the standard E-band
frequency range of 60 to 90 GHz. The attenuation control
is an IEEE-488 (GPIB) and USB port interface toaccommodate remote operations from 0 to 70 dB.
Attenuation increments are 0.05 dB between 0 and 20 dB
and 0.1 dB between 20 and 70 dB. On the front panel, alocal adjustment switch and digital readout allows for convenient manual operations. When used remotely,
the local switch can be locked to prevent inadvertent adjustments. The motor control and interface circuits
are custom designed and uniquely packaged within the attenuator housing. The microprocessor based
electronics ramp the speed of a precision stepper motor to ensure fast and accurate positioning.

Features:•••

Applications:•••

Full Band CoverageHigh Attenuation Accuracy
IEEE-488 and USB Control Port

Test Lab
Instrumentations
Auto Test Set

Electrical Specifications:Parameter
RF Frequency Range
Insertion Loss
Attenuation Range
Attenuation Accuracy
Attenuation Step SizeControl Resolution
Return Loss
Operating Voltage
Power HandlingSpecification Temperature
Operating Temperature

Minimum
60 GHzTypicalMaximum
90 GHzSAGE Millimeter, Inc.

E-Band Programmable Attenuator

1.6 dB0 dB
70 dB
0.1 dB or 3% of reading, whichever is larger, up to 40 dB
0.05 dB from 0 to 20 dB and 0.10 dB from 20 to 70 dB
0.01 dB Steps from 0 to 70 dB
20 dB+24 VDC (100 to 240 VAC Adapter is Supplied)
300 mW (CW)
+25 ˚C+25 ˚C*This product is intended to be used in a controlled lab environment.
To ensure best possible accuracy and prevent unintended behavior, please operate the unit as close to +25 °C room
temperature as possible.

Mechanical Specifications:
PortRF Ports
Control Interface
DC BiasFinishWeight
OutlineConnector
WR-12 Waveguide with UG-387/U Flange
IEEE-488 and USB Port
2.5 mm DC Jack (AC-to-DC power converter included)Gold Plated Waveguide Flange; Black Anodized Body
5 lb
TA-PE-M2

www.eravant.com | 501 Amapola, Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: support@eravant.com
Copyright © 2024 by Eravant

Page | 1STA-60-12-P1Final Rev 2.5

Typical Attenuation vs. Frequency
0Attenuation (dB)

-10-20-30-40-50-60-70606264

Insertion Loss66

68
10 dB

70

72
7476
Frequency (GHz)
20 dB

30 dB

78

80
40 dB

82

84

86

50 dB

8860 dB

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

90

SAGE Millimeter, Inc.

E-Band Programmable Attenuator

www.eravant.com | 501 Amapola, Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: support@eravant.com
Copyright © 2024 by Eravant

Page | 2

STA-60-12-P1

Final Rev 2.5

Note:• Calibration accuracy is 0.1 dB or 3% of the reading, whichever is greater, for attenuation ranges
up to 40 dB, 5% up to 50 dB, and “for reference only” above 50 dB.
• All calibration and testing are performed at +25 °C room temperature.
• This product is intended to be used in a controlled lab environment. To ensure best possible
accuracy and prevent unintended behavior, please operate the unit as close to +25 °C room
temperature as possible.
• The attenuation flatness is ±2% or ±0.5 dB of the indicated value, whichever is greater, for thefrequency band.
• The phase shift value does change while varying the attenuation.
• AC-to-DC power converter with cord is included.
• All data presented is collected from a sample lot. Actual data may vary unit to unit, slightly.
• All testing was performed under +25 ˚C case temperature.
• Eravant reserves the right to change the information presented without notice.
Caution:• Exceeding absolute maximum ratings shown will damage the device.
• Any foreign objects in the waveguide will cause performance degradation and may damage thedevice.

SAGE Millimeter, Inc.

E-Band Programmable Attenuator

www.eravant.com | 501 Amapola, Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: support@eravant.com
Copyright © 2024 by Eravant

Page | 3