SFB-28-N1

Rev 1.5

Ka-Band Balanced Mixer
Description:
Model SFB-28-N1 is a Ka Band balanced mixer that utilizes highperformance GaAs Schottky beam-lead diodes and a balanced
circuit configuration 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 to13.5 GHz. The mixer offers a conversion loss of 7.5 dB typical anda high RF to LO port isolation of 30 dB.

Features:•••

Applications:•••

Full Waveguide Band Coverage
Low Conversion Loss
High IF Frequency up to 13.5 GHz

Radar Systems
Communication Systems
Test Equipment

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

Minimum
26.5 GHz
26.5 GHz
DC+10 dBm

Typical+13 dBm-3 dBm
7.5 dB
30 dB

Maximum
40 GHz40 GHz13.5 GHz+18 dBm
10 dB+20 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 +13 dBm. The higher the LO power, thehigher the input P-1dB.

Mechanical Specifications:ItemRF PortLO PortIF PortCase Material
FinishWeightOutline

Specification
WR-28 Waveguide with UG-599/U Flange
WR-28 Waveguide with UG-599/U Flange
SMA (F)
AluminumGold Plated
0.6 Oz
FB-NA

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

Rev 1.5

Ka-Band Balanced Mixer
Typical Conversion Loss vs. Frequency
RF: -20 dBm; LO: +13 dBm
20
Conversion Loss (LO @ 26.5 GHz)
15
Conversion Loss (LO @ 32 GHz)

Conversion Loss (dB)

10Conversion Loss (LO @ 40 GHz)50-5-10-15-20-25-30
2627282930

31323334353637383940

Frequency (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

Rev 1.5Ka-Band Balanced Mixer
Note:• All data presented is collected from a sample lot. Actual data may vary unit to unit slightly.
• All testing was performed under +25 oC 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.
• Eravant reserves the right to change the information presented without notice.
Caution:• Exceeding absolute maximum ratings shown will damage the device.
• 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 because the mixer will be damaged.
• 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