SFD-333503-22SF-N1

Rev. 1.0

Description:
Model SFD-333503-22SF-N1 is a Q 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 isapproximately -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
33 GHzTypicalMaximum
50 GHzSAGE Millimeter, Inc.

Q-Band Amplitude Detector, Small Signal, Negative

1200 mV/mW±2.0 dB-20 dBm+17 dBm
10 MHz
5 Nano Second
Negative+25 ˚C-40 ˚C+85 ˚C*Note: The sensitivity is for the input signal level -20 dBm or below.

Mechanical Specifications:Item
RF PortDC PortCase Material
FinishWeight
OutlineSpecification
WR-22 Waveguide with UG-383/U Flange
SMA (F)
AluminumGold Plated
0.6 OzFD-Q1

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-333503-22SF-N1

Rev. 1.0

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

10000

1000

100

101333435363738394041424344454647484950

Frequency (GHz)

SAGE Millimeter, Inc.

Q-Band Amplitude Detector, Small Signal, Negative

Typical Detected Voltage vs. Input Power-450

V out (mV)

-400-350

33 GHz-300

41.5 GHz
50 GHz-250-200-150-100-50
0-25-20-15
Input Power (dBm)-10-5

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-333503-22SF-N1

Rev. 1.0

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

Note:


SAGE Millimeter, Inc.

Q-Band Amplitude Detector, Small Signal, Negative

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-333503-22SF-P1.
The amplitude detector is a small signal detector. The sensitivity shown is for RF signal -20 dBm
or lower.
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 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 ± 0.15 inch-pounds (0.92 ± 0.05 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