SFH-28SFSF-A3

Rev. 1.1

Description:
Model SFH-28SFSF-A3 is a Ka-Band balanced harmonic mixer
that is specially designed for use with Keysight’s spectrum
analyzer series. The mixer employs high performance, GaAs
Schottky flip chip diodes and a balanced configuration toproduce a superior RF performance. With an IF range of DC to
1.3 GHz, the harmonic mixer uses the harmonic number 8 of a
3.0 to 6.1 GHz LO at +16 dBm to translate 26.5 to 40 GHz. Theharmonic mixer has a typical conversion loss of 30 dB. Themixer can be used as other even harmonic numbers, such as 4,6, and 10 etc. with various conversion loss performance. In
general, the lower the harmonics, the lower the conversion loss.

Features:••••

Applications:•••

Full Waveguide Band Operation
No External Bias Required
Even Harmonic Detection
Calibrated for 8th Harmonic

Keysight Spectrum Analyzers
Frequency Meters
Phase Locked Loops

Electrical Specifications:Parameter
RF Frequency
LO Frequency
IF Frequency
Required LO Pumping Power
Conversion Loss
Combined Damage RF and LO Power
Number of Harmonics*Specification Temperature
Operation Temperature*Note: Other even harmonics can be used.

Minimum
26.5 GHz
3.0 GHzDC

Typical+16 dBm
30 dB

SAGE Millimeter, Inc.

Ka-Band Harmonic Mixer, 8th Harmonics. Keysight Spectrum Analyzer

Maximum
40 GHz6.1 GHz
1.3 GHz+19 dBm+20 dBm

8+25 ˚C-40 ˚C+85 ˚C

Mechanical Specifications:
Item
RF PortLO PortIF PortCase Material
FinishWeightOutline

Specification
WR-28 Waveguide with UG-599/U Flange
SMA (F)
SMA (F)
Brass
Gold Plated
5.6 Oz
FH-A2

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

SFH-28SFSF-A3

Rev. 1.1SAGE Millimeter, Inc.

Ka-Band Harmonic Mixer, 8th Harmonics. Keysight Spectrum Analyzer
Typical Conversion Loss vs. Frequency
RF = -20 dBm, LO = +16 dBm
40
IF = 1 GHz

35

IF = 300 MHzConversion Loss (dB)

30

25

20

15

105026

27

28

2930

3132

33

34

35

3637

38

3940

Frequency (GHz)

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.
• SAGE Millimeter, Inc. reserves the right to change the information presented without notice.
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

SFH-28SFSF-A3

Rev. 1.1

Caution:••••Exceeding absolute maximum ratings of the mixer will damage the device.
Any foreign objects in the waveguide will cause performance degradation and possible device
damage.
The mixer is a static sensitive device. Always follow ESD rules when working with the mixer.
Proper torque, 8.0 ± 0.15 inch-pounds (0.90 ± 0.02 Nm), should be applied. SAGE Millimeter
torque wrench, model SCH-08008-S1, is highly recommended.

SAGE Millimeter, Inc.

Ka-Band Harmonic Mixer, 8th Harmonics. Keysight Spectrum Analyzer

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