SAP-28KF-E2 and SAP-28KM-E2

Rev. 1.1

Description:
Model SAP-28KF-E2 and SAP-28KM-E2 are Ka-band probe
antenna with a end launch (180°) 2.92 mm (F) coax connector tocover the frequency range of 26.5 GHz to 40 GHz. The antennaoffers 6.5 dBi nominal gain and 115 degrees typical half power
beamwidth on the E-plane and 60 degrees typical half power
beamwidth on the H-plane. The antenna supports linear
polarized waveforms. The right angle (90°) versions are offeredunder model number SAP-28KF-R2 and SAP-28KM-R2.

Features:••••

Applications:••••

Rectangular Waveguide Interface
Precisely Machined and Gold Plated
Linear Polarization
High Return Loss

5G Systems
Antenna Ranges
Antenna Gain Measurements
System Setups

Electrical Specifications:Parameter
Frequency
Gain
Polarization
3 dB Beamwidth, E-Plane
3 dB Beamwidth, H-Plane
Sidelobes, E-Plane
Sidelobes, H-Plane
Return Loss
Power HandlingSpecification Temperature
Operating Temperature

Minimum
26.5 GHz

TypicalMaximum
40 GHzSAGE Millimeter, Inc.

WR-28 Probe Antenna, 6.5 dBi Gain with 2.92 mm Coax Input

6.5 dBi
Linear115°
60°-10 dB-14 dB
15 dB
40 W (CW)+25 °C-40 °C+85 °C

Mechanical Specifications:
Item
Antenna Port (F)Antenna Port (M)Material
Connector Material
FinishWeightSize
OutlineSpecification
2.92 mm Female for Model Number: SAP-28KF-E2
2.92 mm male for Model Number: SAP-28KM-E2
Brass
Stainless SteelGold Plated
1.5 Oz3.80” (L) x 0.63 (W) x 0.28 (H)AP-RAC-E

www.eravant.com | 501 Amapola Avenue, Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: support@eravant.com
Copyright © 2023 by EravantPage | 1SAP-28KF-E2 and SAP-28KM-E2

Rev. 1.1

Typical Antenna Pattern @ 33.25 GHz
10E-Plane
H-Plane5Gain (dBi)0-5-10-15-90 -80 -70 -60 -50 -40 -30 -20 -100102030

40

5060

70

80

90

Boresight Angle (Degrees)

SAGE Millimeter, Inc.

WR-28 Probe Antenna, 6.5 dBi Gain with 2.92 mm Coax Input

Typical Gain vs. Frequency
10Gain (dBi)8642026.5

28

29.5

31

32.5

34

35.5

3738.540Frequency (GHz)www.eravant.com | 501 Amapola Avenue, Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: support@eravant.com
Copyright © 2023 by Eravant

Page | 2SAP-28KF-E2 and SAP-28KM-E2

Rev. 1.1

Measured Return Loss vs. Frequency
0Return Loss (dB)

-5-10-15-20-25
26

28

30

32

34

36

38Frequency (GHz)

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

40

SAGE Millimeter, Inc.

WR-28 Probe Antenna, 6.5 dBi Gain with 2.92 mm Coax Input

www.eravant.com | 501 Amapola Avenue, Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: support@eravant.com
Copyright © 2023 by Eravant

Page | 3

SAP-28KF-E2 and SAP-28KM-E2

Rev. 1.1

Note:• This antenna is a mature product. The reasons for only providing simulated data can be found in
the following blog here.
• All testing was performed under +25˚C room temperature.
• Eravant reserves the right to change the information presented without notice.
Caution:• Any foreign objects in the waveguide will cause performance degradation and possible device
damage.
• 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.

SAGE Millimeter, Inc.

WR-28 Probe Antenna, 6.5 dBi Gain with 2.92 mm Coax Input

www.eravant.com | 501 Amapola Avenue, Torrance, CA 90501
Phone: 424-757-0168 | Fax: 424-757-0188 | Email: support@eravant.com
Copyright © 2023 by Eravant

Page | 4