SOM-29304320-28-M1

Rev. 1.1

Description:
Model SOM-29304320-28-M1 is a Ka-band, mechanically tuned Gunn
oscillator that utilizes a high performance GaAs Gunn diode andproprietary cavity design to deliver +20 dBm typical power. Theoscillator features a frequency tuning range of 27 to 31 GHz anddelivers low AM/FM noise and harmonic emissions. Compared to its
counterparts, such as multiplier based sources, the Gunn oscillator is alower cost and cleaner source. The Gunn oscillator’s frequency can also
be tuned by varying the bias voltage, which is useful for phase-locking
and electrical-tuning applications. The Gunn oscillator is equipped witha self-locking set screw for frequency trimming. Models with a micrometer for lab and test bench
applications are available under a different model number. The performance of the oscillator can befurther enhanced by adding an optional isolator, Gunn oscillator modulator/regulator and temperature
heater.

Features:••

Applications:•••

Low AM/FM Noise and Harmonics
Bias Tunable

Test Sources
Signal Generation
Lab Test Setups

SAGE Millimeter, Inc.

Ka-Band Mechanically Tuned Gunn Oscillator, +20 dBm, 4 GHz BandwidthElectrical Specifications:Parameter
Center Frequency
Power Output
Mechanical Tuning Range
Bias Tuning Range (+4.5 to +5.5 VDC)
Bias Voltage
Bias Current
Specification Temperature
Operating Temperature

Minimum
27 GHz+18 dBm

Typical29 GHz+20 dBm±2.0 GHz*±10 MHz+4.5 VDC
850 mA+25˚C

0˚C

Maximum
31 GHz+5.0VDC+50˚C*Note: Actual tuning bandwidth is wider. It may cover 27 to 35 GHz.

Mechanical Specifications:
Item
RF PortBias Port
Mechanical Tuning
Body Material
FinishWeight
OutlineSpecificationWR-28 Waveguide with UG-599/U Flange
SMA (F)
Self-Locking Set Screw
AluminumGold Plated
3.0 OzOM-MA-C-M

www.eravant.com | 501 Amapola Ave., Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@eravant.com
Copyright © 2019 by SAGE Millimeter, Inc.

Page | 1

SOM-29304320-28-M1Rev. 1.1

Frequency (GHz)

Bias: +5 VDC/846 mA
3630

3527342433

2132

1831

15
Frequency (GHz)30

12Power( dBm)

29

928

627326045

50556065707580859095100

Micrometer Reading (Mils)

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

Power (dBm)

Frequency and Power Output vs. Micrometer Reading

SAGE Millimeter, Inc.

Ka-Band Mechanically Tuned Gunn Oscillator, +20 dBm, 4 GHz Bandwidthwww.eravant.com | 501 Amapola Ave., Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@eravant.com
Copyright © 2019 by SAGE Millimeter, Inc.

Page | 2

SOM-29304320-28-M1

Rev. 1.1

Note:• All data is presented using a limited sample lot, actual data may vary unit to unit.
• The data given above was tested under case temperature 35°C.
• The SAGE Millimeter Gunn oscillator regulator SOR-R3 is highly recommended for over voltage andreverse bias protection. The outline of the model SOR-R3 is shown in below.
• The bias tuning feature can be used for electrical tuning and phase lock loop applications.
• SAGE Millimeter, Inc. reserves the right to change the information presented without notice.
Caution:• Reversing polarity will destroy the device.
• Bias voltage should never exceed +5.0 Volts.
• The oscillator is factory set to operate around 28 GHz. The self-locking set screw is for frequency
trimming only. It is not designed for frequent frequency tuning.
• The case temperature of the device should never exceed +50˚C. Use an additional heatsink or fan ifnecessary.
• Proper torque, 8.0 ± 0.15 inch-pounds (0.92 ± 0.05 Nm), should be applied. SAGE Millimeter torquewrench, model SCH-08008-S1, is highly recommended.
• Any foreign objects in the waveguide will destroy the device.

Appendix: The Outline of the Gunn Oscillator Regulator Model SOR-R3

SAGE Millimeter, Inc.

Ka-Band Mechanically Tuned Gunn Oscillator, +20 dBm, 4 GHz Bandwidth

HEATSINK IS NOT SHOWN.

www.eravant.com | 501 Amapola Ave., Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: sales@eravant.com
Copyright © 2019 by SAGE Millimeter, Inc.

Page | 3