Latest News
3/01/2011
All five papers have been accepted for presentation at the IEEE AP-S International Symposium and URSI Radio Science Meeting to be held July 3-8, 2011 .
1/11/2011
Visited MIT Lincoln Laboratory, excellent place with very smart people and cool projects
1/03/2011
I am in Atlanta for the NSF CMMI Research and Innovation Conference.
12/18/2010
The paper "Waveguide Filter Design Using Optimized Pixelated Inserts" has been submitted for publication in the IEEE Microwave and Wireless Components Letters.
12/13/2010
The paper "A Reconfigurable Microstrip Leaky-wave Antenna with a Broadly Steerable Beam" has been accepted for publication in the journal: IEEE Transactions on Antennas and Propagation .
11/29/2010
11/29/2010
Passed my comprehensive exam.
11/17/2010
Officially a US citizen
11/12/2010
I was awarded a student participation grant for the 2011 NSF CMMI Research and Innovation Conference
08/09/2010
Preparing for the AIAA conference that will be held in Texas, (September 2010).
07/14/2010
I won third place at the IEEE Antennas and Propagation best student paper competition, held in Toronto, Canada.
07/11/2010
I am in Toronto, Canada, for the IEEE APS/URSI international Symposium.
06/28/2010
The paper entitle " A Self-Tuning Electromagnetic Shutter" has been accepted for publication in the journal: IEEE Transactions on Antennas and Propagation.
02/10/2010
The paper "In Situ Optimization of Metamaterial-Inspired Loop Antennas" has been accepted for publication in the journal: IEEE Antennas and Wireless Propagation Letters.
01/05/2010
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Reconfigurable Microstrip Leaky-wave Antennas:
Microstrip leaky wave antennas are antennas that radiate energy as a current wave propagates along their axial direction.
One of the characteristics of leaky wave antennas is that the angle of the main beam of radiation is frequency dependent
(changing the frequency changes the direction of the main beam). One efficient and innovative approach to overcome the frequency
dependence of the main beam is as presented in our paper "A reconfigurable microstrip leaky-wave antenna with a broadly steerable beam". In our proposed approach, the free edge of the antenna is loaded with
lumped capacitors that are connected to the ground plane through computer controlled switches. By changing the states of the switches,
the connectivity of the capacitors to the ground plane (and the distribution of capacitance) can be controlled.
This implies that the phase constant of the antenna can be controlled as well. Since the angle of the main beam of radiation is related
to the phase constant of the antenna, having control over the phase constant is equivalent to having control over the main beam angle.
Schematic of the proposed microstrip leaky wave antenna.
Radiation pattern of the unloaded leaky wave antenna (dashed) and the reconfigurable leaky wave antenna (solid line).
Frequency is: A) 6 GHz; B) 6.25 GHz; C) 6.5 GHz; D) 6.75GHz; E) 7 GHz;
Radiation pattern of the reconfigurable leaky wave antenna at 6 GHz optimized to steer the beam at: A) 0 deg; B) -20 deg; C) -40 deg; D) -60 deg; E) -70 deg;.
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