SFD-183273-42SF-N1

Rev. 1.1

Description:
Model SFD-183273-42SF-N1 is a K Band amplitude detector that canbe used for full or narrow band applications. The detector is zerobiased and intended for small signal detection purposes. With adistinct circuitry design and careful diode selection, the detector
exhibits high sensitivity and extremely flat output characteristics
across the full waveguide operating bandwidth. The detector isdesigned to have a 10 MHz video bandwidth and a 1 MΩ video output
impedance. The minimum detectable signal level is approximately -50 dBm.

Features:•••

Applications:•••

Full Waveguide Band Operation
High Sensitivity Without Tuning
High Sensitivity Stability Over Broad
Temperature Range

Radar Systems
Communication Systems
Test instrumentations

Electrical Specifications:Parameter
Frequency
Sensitivity*
Sensitivity Flatness
RF Input PowerRF Power HandlingVideo Bandwidth
Detection Speed, Raise Time (50 Ohm Load)
Output Voltage Polarity
Specification Temperature
Operating Temperature

Minimum
18 GHzTypicalMaximum
26.5 GHz

SAGE Millimeter, Inc.

K-Band Amplitude Detector, Small Signal, Negative

1300 mV/mW±2.0 dB-20 dBm+17 dBm
10 MHz
5 Nano Second
Negative+25 ˚C
0 ˚C+50 ˚C*Note: The sensitivity is for the input signal level -20 dBm or below.

Mechanical Specifications:
ItemRF PortDC Port
Case Material
Finishing
WeightOutlineSpecification
WR-42 Waveguide with UG-595/U Flange
SMA (F)
AluminumGold Plated
0.6 OzFD-K2

www.sagemillimeter.com | 3043 Kashiwa Street, Torrance, CA 90505
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@sagemillimeter.com
Copyright © 2018 by SAGE Millimeter, Inc.

Page | 1

SFD-183273-42SF-N1Rev. 1.1

Typical Performance vs. Frequency
Pin = -20 dBm
100000Sensitivity (-mV/mW)

10000

1000

100

10118

18.5

1919.5

20

20.5

21

21.5

2222.52323.52424.525

25.5

26-7-5Frequency (GHz)26.5

SAGE Millimeter, Inc.

K-Band Amplitude Detector, Small Signal, Negative

Typical Detected Voltage vs. Input Power
160
140
18 GHz120

22.25 GHz
26.5 GHz

V out (mV)

100
80
60
40
200-25-23-21-19-17-15-13
Input Power (dBm)-11-9

www.sagemillimeter.com | 3043 Kashiwa Street, Torrance, CA 90505
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@sagemillimeter.com
Copyright © 2018 by SAGE Millimeter, Inc.

Page | 2

SFD-183273-42SF-N1

Rev. 1.1

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

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.
The positive output voltage polarity is offered under the model number SFD-183273-42SF-P1.
The amplitude detector is a small signal detector. The sensitivity shown is for RF signal -20 dBmor lower.
SAGE Millimeter, Inc. reserves the right to change the information presented without notice.

SAGE Millimeter, Inc.

K-Band Amplitude Detector, Small Signal, Negative

Caution:••••Exceeding absolute maximum ratings will damage the device.
The device is static sensitive. Always follow ESD rules when working with the device.
Any foreign objects in the waveguide will cause performance degradation and can possibly
damage the device.
Proper torque, 8.0 ± 0.4 inch-pounds (0.90 ± 0.02 Nm), should be applied. SAGE Millimeter
torque wrench, model SCH-08008-S1, is highly recommended.

www.sagemillimeter.com | 3043 Kashiwa Street, Torrance, CA 90505
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@sagemillimeter.com
Copyright © 2018 by SAGE Millimeter, Inc.

Page | 3