Wednesday, April 7, 2010

Our very own John Sandora, Past Chair will be presenting: Ultrawideband (UWB) Antenna

Please come and cheer on our past Chair, John Sandora, as he provides us a glimpse of one of the more fascinating antennas that he has developed recently. For those of you who are interested in ultrawideband you will want to check this out.

6:00 PM, Wednesday, 14 April

Ultrawideband (UWB) Antenna

John Sandora, MIT Lincoln Laboratory

An ultrawideband (UWB) antenna has been developed for operation in the 200 MHz to 18 GHz frequency range. This antenna is a new type — a miniaturized offset bicone/dipole design that allows for vertically polarized omnidirectional coverage over an instantaneous 90:1 bandwidth. Numerical electromagnetic simulations with the finite-element method (FEM) were used to investigate the antenna concept and optimize geometry prior to fabrication. Measurements both in a compact range and in an anechoic chamber confirm the antenna’s performance.

John Sandora PhotoJohn Sandora is an engineer at MIT Lincoln Laboratory’s “Advanced RF Sensing and Exploitation” group. Mr. Sandora received Bachelor’s degrees in physics and electrical engineering in 2004 and a MSEE in 2005 from The Ohio State University. As a Graduate Research Assistant he constructed a state-of-the-art compact range radar system which can measure the scattering and radiation characteristics of objects as large as twelve square feet. His thesis topic, “Design of the ElectroScience Lab’s 0.4 – 100 GHz Compact Range Radar System” won Outstanding Thesis in 2005. After joining MIT Lincoln Laboratory, he has continued working on radar, antenna design, RF systems analysis, and other advanced applied electromagnetics.

The meeting will be held at the MIT Lincoln Laboratory Cafeteria in Lexington, MA. Refreshments will be served at 5:30; the talk will begin at 6:00 pm. The talk is open to the general public.

Directions to Lincoln Laboratory Cafeteria from points north: Take I-95/128 south to exit 31B, Routes 4 & 225 towards Bedford. Stay in right lane and use the right turning lane (0.3 miles) to access Hartwell Ave at first traffic light. Follow Hartwell Ave to the end; take a left onto Wood Street (just before the AFB gate). Lincoln Laboratory entrance is 0.5 miles on right. The entrance to the cafeteria is on the lower level left of the main entrance.

From points south: Take I-95/128 north to exit 30B, Route 2A west. Turn right on to Mass Ave (~0.4 miles). Turn left on to Wood Street (~0.4 miles) Lincoln Laboratory Wood Street entrance is 1 mile on left. The entrance to the cafeteria is on the lower level to the left of the main entrance.

For more information contact John Sandora (

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