Here are some of the design projects I've been involved with:
Small Tracking Antenna
This
is a 10 foot diameter tracking system that operates at L- and S-band (1435-2300
MHz). It was used to track sounding rockets that were fired into
atmosphere to study the aurora. This system replaced the arrays of Yagi
antennas you can see in the background. The system was located at the
Churchill
Research Range on the West side of the Hudson Bay at Churchill,
Canada. This was my first project!
Iridium
Iridium
was the world's first global personal communications system. Although it
was a business failure, it was a technological success. I designed the
3-meter Ka-band TT&C and Gateway antennas. These autotracking antennas
operate at 20 & 30 GHz and provide the link between the constellation of 66
Iridium satellites and the ground. The TT&C antennas are located in
Hawaii, Canada, and Iceland. The Gateway antennas are located all over the
world. Every Iridium phone call that connects to a land based phone passes
through one of my antennas!
This
is one of the two Iridium Earth Terminals installed in Egillstadir,
Iceland. Inside the 17 foot diameter space-frame radome is a 3-meter
diameter autotracking antenna that operates at 20/30 GHz.
Astrolink
Astrolink is a next generation broadband, bandwidth-on-demand satellite communications system. ViaSat is designing and building Gateway Antenna Systems for Astrolink. The Astrolink gateways will be used to connect the Regional Network Control Centers to the satellites and to provide Intersatellite Ground Links that connect adjacent satellites in the constellation.
10-meter Remote Sensing Antenna
I designed the X-band feed for a 10-meter S/X-band autotracking antenna that was installed in Bangladesh. It is used to receive images from the LandSat and Spot remote sensing satellites. An interesting part of this project was the development of methods to measure the G/T of the system using the moon as a source.
Planar Near-Field Measurement System
This
is a Planar Near-Field antenna measurement system at in Montreal, Canada.
I was the project engineer for the microwave measurement system including the
planar near-field software. This system was used to measure the large
array antenna that flew on the RadarSat
remote sensing satellite.
Second TDRSS Ground Station
NASA
uses two ground stations in White
Sands, New Mexico to communicate with the Space Shuttles and most NASA
satellites. I designed the 10-meter S-band TT&C antenna that backs up
the main 18-meter antennas. I also designed the 4.5-meter S- and Ku-band
antenna systems used to perform End-to-End testing of the TDRSS
communications. The 4.5-meter antennas simulate the communications from
the shuttle and other satellites with the TDRSS satellites.
F-16 Radar Antenna and Radome Test System
An antenna and radome measurement system installed at ELTA Industries in Ashdod,
Israel. It was used to test the radar antennas and radomes on the F-16
fighter.
Other Projects
 | Wideband reflector antennas for the U.S. Government used as part of radar cross-section measurement systems. |
