SFB-08-E2

F-Band Externally Biased Balanced Mixer
SFB-08-E2 is an F-Band, externally biased balanced mixer. The mixer
supports the full waveguide band operation for both LO and RF
frequencies from 90 to 140 GHz with an extremely broad IF output fromDC to 40 GHz. The mixer offers a typical conversion loss of 13 dB. The
externally biased mixer is used when high LO power is not available.
Externally biased mixer works with low local oscillator (LO) power of 0 to+5 dBm when external bias of +5 VDC is applied. As a trade-off, LO to RFisolation is lower compared to non-biased mixers.

Electrical Specifications:Parameter

Minimum

TypicalMaximum

RF Frequency

90 GHz140 GHzLO Frequency

90 GHz140 GHzECCNIF Frequency

DC40 GHz

EAR99

LO Pumping Power+3 dBm+10 dBm

Conversion Loss

13 dB

15 dB

RF Input P1dB

-10 dBm

LO to RF Isolation
Combined Damage RF toLO Power
External Bis Voltage

20 dB+5 VDC/ 1 mA

Specification Temperature+25°C

Operating Temperature+0 dBm+13 dBm+5 VDC/ 5 mA

-40°C

+85°C

Mechanical Specifications:
Item

FEATURES••••

Full Waveguide Band Coverage
Low LO Power Requirement
Low Conversion LossIF Frequency up to 40 GHz

APPLICATIONS•••

Radar Systems
Communication Systems
Test Equipment

SUPPLEMENTAL DETAILSSpecification•RFWR-08 Waveguide with UG-387/U-M Anti-Cocking FlangeLO

WR-08 Waveguide with UG-387/U-M Anti-Cocking Flange

IFK (F)

External Bias

SMA (F)

Case Material

Aluminum

FinishGold Plated

Weight

0.8 OzOutline

FB-EF-A-2

www.eravant.com | 424-757-0168 | support@eravant.com
Copyright © 2024 by Eravant

LO to RF Isolation of Externally
Biased MixerFinal Rev 1.8
1/3

SFB-08-E2

Typical Conversion Loss vs. Frequency
RF: -20 dBm; LO: +3 dBm, Bias: +5 VDC/1 mA
20Conversion Loss (LO @ 90 GHz)
Conversion Loss (LO @ 115 GHz)

15Conversion Loss (LO @ 140 GHz)

Conversion Loss (dB)

1050-5-10-15-20-25-30
90

95

100

105

110

115120

125

130

135

140Frequency (GHz)

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

www.eravant.com | 424-757-0168 | support@eravant.com
Copyright © 2024 by Eravant

Final Rev 1.82/3

SFB-08-E2

NOTE:•••••The test data provided is collected from a sample lot. Actual data may vary slightly from unit to unit. All testing is performed
under +25 °C room 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.
To protect mixer from accidental static discharge, overbias and/or reverse bias, it is highly recommended to use voltage
regulator (M/N: SOR-05-SM-R1) with this mixer.
When sufficient LO power is available, always use non-biased mixers to get optimum conversion loss and LO to RFisolation. Externally biased mixers should be used only if 13 dBm LO power is not available.
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 should be at least 5 dB lower than input P-1dB.
The device is static sensitive. Always follow ESD rules when working with the device.
The IF port of the externally biased mixer is DC coupled. Due to the external bias, it has a small DC offset voltage (+0.7VDC), which could upset the connecting device performance or even damage the device. Use a DC block whenconnecting 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 may damage or destroy the unit.
For 1.35 mm, 1.85 mm, 2.4 mm, 2.92 mm, and SMA connectors proper torque, 8.0 ± 0.15 inch-pounds (0.90 ± 0.02 Nm),should be applied. Eravant torque wrench model SCH-08008-S1 is highly recommended.

Appendix: The Outline of Externally Biased Mixer Voltage Regulator (SOR-05-SM-R1).
Unless otherwise specified, all dimensions are in inches [millimeters]www.eravant.com | 424-757-0168 | support@eravant.com
Copyright © 2024 by Eravant

Final Rev 1.83/3