SFB-28-N1-M

Rev 1.5

Ka-Band Balanced Mixer, +10 dBm IP1dB
Description:
Model SFB-28-N1-M is a Ka Band balanced mixer that utilizes
high performance pHEMT based GaAs MMIC to offer superior
RF performance. The mixer supports the full waveguide band
operation for both LO and RF frequencies from 26.5 to 40 GHz
with an IF output from DC to 13.0 GHz. The mixer offers aconversion loss of 12 dB typical, a high LO to RF port isolationof 30 dB, a LO to IF port isolation of 25 dB and an RF to IF port
isolation of 25 dB. The RF and LO ports are WR-28 Uni-Guide™
waveguides, and IF port has SMA Female connector.

Features:•••Applications:••••

Full Waveguide Band Coverage
Low Conversion Loss
High IF Frequency

5G Systems
Radar Systems
Communication Systems
Test Equipment

Electrical Specifications:Parameter
RF Frequency
LO Frequency
IF Frequency
LO Pumping Power
Conversion Loss
RF Input P-1dB
LO to RF Isolation
LO to IF Isolation
RF to IF Isolation
Combined LO and RF PowerSpecification Temperature
Operating Temperature

Minimum
26.5 GHz
26.5 GHz
DC+13 dBm

Typical+15 dBm
12 dB+10 dBm
30 dB25 dB
25 dBMaximum
40 GHz40 GHz13 GHz+18 dBm+22 dBm+25 ˚C-40 ˚C+85 ˚C

Note: The RF input P-1dB is LO pumping power related. The value shown is at LO power +15 dBm. The higher the LO power, thehigher the input P-1dB.

Mechanical Specifications:
Item
RF PortLO PortIF PortCase Material
FinishWeightOutline

Specification
WR-28 Uni-Guide™ Waveguide with UG-599/U Compatible Flange
WR-28 Uni-Guide™ Waveguide with UG-599/U Compatible Flange
SMA (F)
AluminumGold Plated
0.8 OzFB-NAM-1

www.eravant.com | 501 Amapola Ave, Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: support@eravant.com
Copyright © 2023 by Eravant

Page | 1

SFB-28-N1-M

Rev 1.5

Ka-Band Balanced Mixer, +10 dBm IP1dB
Typical Conversion Loss vs. Frequency
RF: -20 dBm; LO: +13 dBm

Conversion Loss (dB)20

Conversion Loss (LO @ 26.5 GHz)

15

Conversion Loss (LO @ 32 GHz)

10

Conversion Loss (LO @ 40 GHz)50-5-10-15-20-25-30
262728

2930

3132

33

34353637383940Frequency (GHz)

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

www.eravant.com | 501 Amapola Ave, Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: support@eravant.com
Copyright © 2023 by Eravant

Page | 2

SFB-28-N1-M

Rev 1.5

Ka-Band Balanced Mixer, +10 dBm IP1dB
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.
A DC block at IF port may be required when connecting to a device, such as an IF low noise
amplifier or a base band mixer which input port is DC coupled.
The mixer employs Eravant’s trademarked and patent pending technology, UniGuide™, as its
waveguide interfaces. The orientation of the input and the output waveguides can be specified
through corresponding model numbers. For example, the model number for a horizontal output
waveguide configuration would be SFB-28H-N1-M instead of the default SFB-28-N1-M whichindicates vertical orientation output.
Eravant reserves the right to change the information presented without notice.

Caution:•••••••

Exceeding absolute maximum ratings shown will damage the device.
The mixer is a small signal device. The typical RF input level is 0 dBm or lower.
The device is static sensitive. Always follow ESD rules when working with the device.
The IF port of the mixer is DC coupled. Use a DC block when connecting to other devices.
Never apply an external bias voltage to the IF port. It will damage the mixer.
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. Eravant torquewrench, model SCH-08008-S1, is highly recommended.

www.eravant.com | 501 Amapola Ave, Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: support@eravant.com
Copyright © 2023 by Eravant

Page | 3