SAS-353-25028-F1-1.0

Linear to Circular Polarizer, Ka Band, 32.4 to 37.6 Ghz,1.0” Long
SAS-353-25028-F1-1.0 is a Ka-band linear to circular polarizer
that operates at 35 GHz with a ±2.6 GHz bandwidth. The polarizer
offers a typical insertion loss of 0.3 dB, a nominal axial ratio of
1.1, and a typical return loss of 20 dB. The polarizer is fixed andcan be used for either right-handed or left-handed polarization
based on the direction of the input signal. The polarizer is often
combined with Eravant’s WR-28 rectangular to Ø0.250” circular
waveguide transition (SWT-28250-SB) and a Ø0.250” circular
waveguide conical horn antenna (SAC-2309-250-S2) or scalarhorn antenna, (SAF-3333931725-250-S1) for various systemapplications.

Electrical Specifications:Parameter

Minimum

TypicalMaximum

ECCN

Frequency Range*

32.4 GHz

35 GHz37.6 GHz

EAR99

Insertion Loss

0.3 dB

Axial Ratio

1.1

Return Loss

20 dB

Specification Temperature+25°C

Operating Temperature

FEATURES

-40°C

+85°C

*Note: Actual frequency can be extended to cover 32 to 38 GHz.

••••

SpecificationWaveguide Port Ø0.250” Circular Waveguide with UG-599/U-M Flange
Insertion Length 1.0”
Material

Aluminum

FinishGold Plated

Weight0.4 Oz

OutlineAS-FAN-250-1.0

Circular Waveguide Interface
Compact Size
Low Insertion Loss
Good Axial Ratio
LHCP or RHCPAPPLICATIONS

Mechanical Specifications:
Item•••••

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

Antenna Ranges
Waveguide Polarization Selection
Radar Systems
Communication Systems

SUPPLEMENTAL DETAILS

Final Rev 1.21/3

SAS-353-25028-F1-1.0

Typical Insertion Loss and Return Loss vs Frequency00-5-5Insertion Loss-10

Return Loss-15-15-20-20-25-25-30-30-35-35-40

Return Loss (dB)

Insertion Loss (dB)

-10-40
32

33

3435

3637

38

Frequency (GHz)

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

NOTE:
••
•

•

On condition that test data is provided it is collected from a sample lot. Actual data may vary slightly from unit to unit. All
testing is performed under +25 °C room temperature.
On condition that simulated test data is provided, actual measured data may slightly vary.
The polarizer is offered as LHCP. However, it can be used as RHCP by reversing the input and output ports.
Eravant reserves the right to change the information presented without notice.

CAUTION:•If a waveguide is present, any foreign objects in the waveguide will cause performance degradation and may damage ordestroy the unit.

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

Final Rev 1.2
2/3

SAS-353-25028-F1-1.0

LHCP and RHCP Polarization Configuration Notes and Diagram:•••

The polarizer’s product label indicates the direction of Left-Handed Circular Polarization (LHCP).
An example configuration diagram is provided below. The diagram indicates the input and output ports and theorientation in which the polarizer is to be attached to the rest of the components to obtain a LHCP signal at theoutput port.
The polarizer can be configured to obtain a Right-Handed Circular Polarized (RHCP) signal at the output
port by reversing the input and output ports as shown in the second diagram.

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

Final Rev 1.2
3/3