STF-10-91-C

Rev. 1.0

Description:
Model STF-10-91-C is a full band Faraday isolator that
operates from 75 to 110 GHz. The Faraday isolator isconstructed with a longitudinal, magnetized ferrite rod thatcauses a Faraday rotation of the incoming RF signal. The
compact, robust package is ideal for system integration andtesting applications and features a 90° twist between theinput port and output port. The Faraday isolator offers 28 dB
typical isolation and 1.5 dB nominal insertion loss with goodflatness. The input and output ports are WR-10 waveguides with UG-387/U-M flanges. An in-line
configuration is available under model number STF-10-S1-C.

Features:••••Applications:•••Full Waveguide Band Operation
Moderate Insertion Loss
High Isolation
Compact Form Factor

Test Labs
Instrumentations
Sub-assemblies

Electrical Specifications:Parameter
RF Frequency
Insertion Loss
Isolation
Return Loss
Power HandlingSpecification Temperature
Operation Temperature

Minimum
75 GHzTypical
1.5 dB
28 dB
15 dB
1.0 W (CW)
+25 °C-40 °CSAGE Millimeter, Inc.

W-Band Full Waveguide Band Compact Faraday Isolator, 90° Twist

Maximum
110 GHz2.2 dB

1.2 W (CW)
+85 °C

Mechanical Specifications:
Item
RF Input and Output Ports
Material
FinishWeight
Insertion LengthOutline

Specification
WR-10 Waveguide with UG-387/U-M Flange
AluminumGold Plated and Black Anodized
0.8 Oz1.0”
TF-SW-9C

www.sagemillimeter.com | 3043 Kashiwa Street, Torrance, CA 90505
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@sagemillimeter.com
Copyright © 2017 by SAGE Millimeter, Inc.

Page | 1

STF-10-91-C

Rev. 1.0

Typical Insertion Loss and Isolation vs. Frequency
00-1-5-2-10Insertion Loss-15

Isolation-4-20-5-25-6-30-7-35-8-40-9-45-10-507580

859095100105

110

Frequency (GHz)

Isolation (dB)

Insertion Loss (dB)

-3SAGE Millimeter, Inc.

W-Band Full Waveguide Band Compact Faraday Isolator, 90° Twist

Typical Return Loss vs. Frequency
0-5
Input Return Loss

Return Loss (dB)-10Output Return Loss

-15-20-25-30-35-4075

80

85

9095

100

105

110

Frequency (GHz)www.sagemillimeter.com | 3043 Kashiwa Street, Torrance, CA 90505
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@sagemillimeter.com
Copyright © 2017 by SAGE Millimeter, Inc.

Page | 2STF-10-91-C

Rev. 1.0

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

Note:
••••
•
•

SAGE Millimeter, Inc.

W-Band Full Waveguide Band Compact Faraday Isolator, 90° Twist

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.
The standard compact model is offered under model number STF-10-S1-C.
The standard model is offered under model number STF-10-S1.
Other custom mechanical configurations are available under different model numbers.
SAGE Millimeter, Inc. reserves the right to change the information presented without notice.

Caution:• Exceeding absolute maximum ratings will damage the device.
• The device is sensitive to magnetic fields. Always keep magnet fields 6 inches away.
• 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 © 2017 by SAGE Millimeter, Inc.

Page | 3