TY - GEN
T1 - Imaging performance of a THz focal plane array
AU - Trichopoulos, Georgios C.
AU - Topalli, Kagan
AU - Sertel, Kubilay
PY - 2011/11/1
Y1 - 2011/11/1
N2 - A new broadband monolithic THz antenna design that covers the entire 0.6 - 1.2 THz band is developed as the imaging pixel of THz focal plane array (FPA). Heterostructure backward diodes are integrated monolithically with the THz antennas and are used as the detectors to reproduce digital images from the 2-dimensional received power distribution. A new simplified design is developed which is capable of focusing the antenna beams directly onto the image plane using an extended-hemispherical lens. We show that a resolution of 1.5 mm can be achieved with this simpler design. For achieving optimal pixel sensitivity, we use full-wave antenna modeling to optimize the impedance matching between the antennas and the integrated diodes. In addition, quasi-optical propagation analysis is used to evaluate and optimize the overall imaging resolution of the THz imaging system.
AB - A new broadband monolithic THz antenna design that covers the entire 0.6 - 1.2 THz band is developed as the imaging pixel of THz focal plane array (FPA). Heterostructure backward diodes are integrated monolithically with the THz antennas and are used as the detectors to reproduce digital images from the 2-dimensional received power distribution. A new simplified design is developed which is capable of focusing the antenna beams directly onto the image plane using an extended-hemispherical lens. We show that a resolution of 1.5 mm can be achieved with this simpler design. For achieving optimal pixel sensitivity, we use full-wave antenna modeling to optimize the impedance matching between the antennas and the integrated diodes. In addition, quasi-optical propagation analysis is used to evaluate and optimize the overall imaging resolution of the THz imaging system.
KW - focal plane arrays
KW - quasioptical systems
KW - terahertz imaging
UR - http://www.scopus.com/inward/record.url?scp=80055006056&partnerID=8YFLogxK
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U2 - 10.1109/APS.2011.5996659
DO - 10.1109/APS.2011.5996659
M3 - Conference contribution
AN - SCOPUS:80055006056
SN - 9781424495634
T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
SP - 134
EP - 136
BT - 2011 IEEE International Symposium on Antennas and Propagation - Proceedings
T2 - 2011 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, APSURSI 2011
Y2 - 3 July 2011 through 8 July 2011
ER -