AEHF Demonstrates Uplink Phased Array Antenna Technology

Released on Tuesday, September 28, 2004
United States of America
AEHF - Advanced Extremely High Frequency
The Northrop-Grumman Corporation has announced that the Advanced Extremely High Frequency (AEHF) satellite payload Uplink Phased Array Antenna Technology has been demonstrated successfully.

Northrop-Grumman completed electrical testing of the uplink phased array antenna, which receives signals from ground terminals. The AEHF antenna directs radio frequency beams electronically rather than by moving reflectors mechanically. This allows a single antenna to do the job of many reflectors, giving the flexibility to point-on-demand in fractions of a second. Moreover, the electronically steered antenna reduces the possibility of jamming and intercept by enemies.

The AEHF uplink antenna will be the first operating at 44 GHz. In addition, it will utilize the new semiconductor material, Indium Phosphide (InP), for some of the antenna's more than 10,000 monolithic microwave integrated circuits. InP semiconductor provides low noise or clear signal performance. The first AEHF flight payload is scheduled for delivery in April 2006.

The AEHF program will greatly improve access to military satellite communications while increasing the range of missions the system can support on the ground, at sea and in the air. The system will provide 10 times greater total capacity and channel data rate transfer six times higher than that of Milstar II satellites. AEHF will replace Milstar constellation providing secure, reliable communications between command and control units wherever they operate.


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