SAGE Millimeter, Inc.
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1 Description: Model SAF S1-28-DP is a dual polarized, WR-28 scalar feed horn antenna assembly that covers several popular G bands in the frequency range of 24 to 42 GHz. The antenna features an integrated orthomode transducer (OMT) that provides high port isolation and cross-polarization cancellation and a broad band scalar horn that provides low sidelobe levels. The OMT enables the antenna to separate a circular or elliptical polarized waveform into two linear, orthogonal waveforms or vice versa. The dual polarized horn also supports either vertical or horizontal polarized waveguide forms with more than 3 db cross polarization rejections. At center frequency, the horn antenna exhibits dbi nominal gain and a typical half power beamwidth of 3 degrees and -2 db sidelobe levels, respectively. The antenna exhibits 3 db typical port isolation between the horizontal and vertical ports. The horizontal and vertical ports are WR-28 waveguides with UG-99/U flanges and 4-4 threaded holes. Features: 24 to 42 GHz Operations Linear and Circular Polarizations High Port Isolation High Crosspol Rejection Electrical Specifications: Applications: G Systems Radar Systems Communication Systems Circular and Linear Wavefom Separation and Combination Parameter Minimum Typical Maximum Frequency 24 GHz 42 GHz Gain dbi 3 db 33 GHz 3 3 db 33 GHz 3 Sidelobe Levels -2 db V and H Port Isolation 3 db Cross Polarization Rejection 3 db Port Return Loss 2 db Specification Temperature +2 C Operating Temperature -4 C +8 C Mechanical Specifications: Item Horizontal and Vertical Ports Material Finish Weight Size Outline Specification WR-28 Waveguide with UG-99/U Threaded Flange Aluminum, Brass Gold Plated.6 Oz 4. (L) x 1.6 (W) x.7 (H) AF-CA DP Copyright 218 by Page 1
2 Simulated Antenna 24 GHz Simulated Antenna 3 GHz Copyright 218 by Page 2
3 Simulated Antenna 36 GHz Simulated Antenna 42 GHz Copyright 218 by Page 3
4 3dB Beamwidth (Degrees) Simulated Gain vs. Frequency Simulated E and H Plane 3dB Beamwidth vs. Frequency Copyright 218 by Page 4
5 Return Loss (db) Return Loss (db) Measured Antenna Return Loss vs. Frequency Measured Port Return Loss vs. Frequency Return Loss (H-Port) Return Loss (V-Port) Copyright 218 by Page
6 Cross Polarization & Isolation (db) Measured Cross Polarization & Isolation vs. Frequency - - Cross Polarization (H) Cross Polarization (V) Isolation Mechanical Outline: (Unless otherwise specified, all dimensions are in inches [millimeters]) Copyright 218 by Page 6
7 Note: Antenna patterns, gain and 3 db beamwith are simulated. Actual data may vary. Antenna Return Loss, Port Return Loss, Cross Polarization, and Isolation data presented is collected from a sample lot. Actual data may vary unit to unit, slightly. All testing was performed under +2 C room temperature. reserves the right to change the information presented without notice. Caution: Any foreign objects in the antenna will cause performance degradation and possible device damage. Copyright 218 by Page 7
SAGE Millimeter, Inc.
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