STG-28-S1

Ka-Band Noise Figure and Gain Test Extenders
STG-28-S1 is a full Ka-Band noise figure and gain test extender thatextends the noise and gain measurement capabilities of common andlow frequency signal synthesizers and noise figure meters to thefrequency range of 26.5 to 40 GHz. This extender is designed tointerface with industry standard noise and gain test systems, such as theKeysight 8970A/B and Y Factor with a spectrum analyzer. It can alsointerface with most noise and gain analyzers in the 10 MHz to 1.6 GHz
frequency range.

Electrical Specifications:Parameter
RF Frequency

Minimum

Typical26.5 GHz

Noise Source ENR

Maximum

ECCN

40.0 GHz

EAR99

15 dB

Noise Source Bias
Voltage/Current+18 VDC/50 mA

Down Converter IF
Frequency

10.0 MHz

1.6 GHz

Down Converter LO
Frequency

13.2 GHz

20.0 GHz

Down Converter LO Power+28 VDC/
60 mA+30 VDC/
75 mA+3 dBm+20 dBm

Down Converter RF
Damage Level

Full Band Coverage
Precision Calibrated ENR
Great ENR and Gain Flatness

APPLICATIONS••Test Lab
Instrumentations

SUPPLEMENTAL DETAILS
10 dB
20 dB
100 VAC

240 VAC+25 ˚CSpecification Temperature
Operating Temperature•••+18 dBm

Down Converter NoiseFigure
Down Converter Gain
Power Supply (AC AdapterProvided)

FEATURES

0 ˚C+50 ˚Cwww.eravant.com | 424-757-0168 | support@eravant.com
Copyright © 2023 by Eravant

Final Rev 1.6
1/4

STG-28-S1

Mechanical Specifications:
Item
Noise Source RF Port

Specification
WR-28 Waveguide with UG-599/U Compatible Flange

Noise Source Bias PortBNC (F)

Noise Source Trigger

SMA (F)

Down Converter RF Port

WR-28 Waveguide with UG-599/U Flange

Down Converter LO Port

SMA (F)

Down Converter IF Port

SMA (F)

Down Converter Bias Port

2.5 mm DC Jack (AC-to-DC power converter included)

Weight4.0 lbs.

OutlineDown Converter (TC-A-2), Noise Source (TZ-OA-3)

Block Diagram:

Typical Gain and ENR vs. Frequency
3535
Gain

30

ENR

25

25

20

20

15

15

10

10

5

50

ENR (dB)

Gain (dB)

30

0

26.5

28

29.5

3132.534
Frequency (GHz)www.eravant.com | 424-757-0168 | support@eravant.com
Copyright © 2023 by Eravant

35.5

3738.5

40Final Rev 1.6
2/4

STG-28-S1

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

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

www.eravant.com | 424-757-0168 | support@eravant.com
Copyright © 2023 by Eravant

Final Rev 1.6
3/4

STG-28-S1

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.
The Triggering Port (female SMA connector) of the noise source is provided to turn the noise source on and off via a TTL
control signal any time the Bias is applied. The switching frequency is limited to 1 KHz.
The Power/Triggering Inversion Switch of the noise source is provided to manually turn the noise source on and off any
time the Bias is applied. When the switch is in the “ON” position, the LED light will be illuminated.
Eravant reserves the right to change the information presented without notice.

CAUTION:••

Exceeding absolute maximum ratings shown will damage the device.
Any foreign objects in the waveguide will cause performance degradation and possible device damage.

www.eravant.com | 424-757-0168 | support@eravant.com
Copyright © 2023 by Eravant

Final Rev 1.6
4/4