Department of Electrical and Electronics Engineering
Recent Submissions

Plasmonically enhanced hot electron based photovoltaic device
(OSA, 2013)Hot electron photovoltaics is emerging as a candidate for low cost and ultra thin solar cells. Plasmonic means can be utilized to significantly boost device efficiency. We separately form the tunneling metalinsulatormetal ... 
Motioncompensated prediction based algorithm for medical image sequence compression
(Elsevier, 199509)A method for irreversible compression of medical image sequences is described. The method relies on discrete cosine transform and motioncompensated prediction to reduce intra and interframe redundancies in medical image ... 
Solving the ME/ME/1 queue with statespace methods and the matrix sign function
(Elsevier, 200602)Matrix exponential (ME) distributions not only include the wellknown class of phasetype distributions but also can be used to approximate more general distributions (e.g., deterministic, heavytailed, etc.). In this ... 
An Optimized Isolation Network for the Wilkinson Divider
(IEEE, 2014)We propose an isolation network to simultaneously improve the input return loss, output return loss and isolation of the Wilkinson power divider in a wide bandwidth. The required even mode and odd mode reflection ... 
Achievable Rates for Noisy Channels with Synchronization Errors
(IEEE, 201411)We develop several lower bounds on the capacity of binary input symmetric output channels with synchronization errors, which also suffer from other types of impairments such as substitutions, erasures, additive white ... 
Approximate Fourier Domain Expression for BlochSiegert Shift
(Wiley, 20140129)PurposeIn this study, a new simple Fourier domainbased analytical expression for the BlochSiegert (BS) shiftbased B1 mapping method is proposed to obtain vertical bar b(1)(+)vertical bar more accurately while using ... 
Propagation of Mutual Intensity Expressed in terms of the Fractional Fourier Transform
(OSA Publising, 1996)The propagation of mutual intensity through quadratic gradedindex media or free space can be expressed in terms of twodimensional fractional Fourier transforms for onedimensional systems and in terms of fourdimension ... 
Optimized Dipole Antennas on Photonic Band gap crystals
(American Institute of Physics, 19950925)Photonic band gap crystals have been used as a perfectly reflecting substrate for planar dipole antennas in the 12–15 GHz regime. The position, orientation, and driving frequency of the dipole antenna on the photonic band ... 
Simulation of higher harmonics generation in tappingmode atomic force microscopy
(American Institute of Physics, 2001)In tappingmode atomic force microscopy, nonlinear tip–sample interactions give rise to higher harmonics of the cantilever vibration. We present an electrical circuit to model the atomic force microscope cantilever with ... 
Upper bounds on the capacity of deletion channels using channel fragmentation
(IEEE, 201501)We study memoryless channels with synchronization errors as defined by a stochastic channel matrix allowing for symbol dropouts or symbol insertions with particular emphasis on the binary and nonbinary deletion channels. ... 
A New Signal Representation based on the Fractional Fourier Transform: Definitions
(OSA Publishing, 1995)The fractional Fourier transform is a mathematical operation that generalizes the wellknown Fourier transform. This operation has been shown to have physical and optical fundamental meanings, and it has been experimentally ... 
Design of dynamically adjustable anamorphic fractional Fourier transformer
(Elsevier, 19970301)We form optical systems by using only free space portions and cylindrical lenses, and consider these systems as anamorphic fractional Fourier transformers. We dynamically adjust the transform order, scale factor and field ... 
Sampling of the diffraction field
(Optical Society of America Publishing, 2000)When optical signals, like diffraction patterns, are processed by digital means the choice of sampling density and geometry is important during analogtodigital conversion. Continuous bandlimited signals can be sampled ... 
Timedomain equivalent edge currents for transient scattering
(IEEE, 200104)Timedomain equivalent edge currents (TDEEC) are developed for the transient scattering analysis. The development is based on the Fourier inversion of frequency domain equivalent edge current expressions. The timedomain ... 
Fixed zeros of decentralized control systems
(IEEE, 200001)This paper considers the notion of decentralized fixed zeros for linear, timeinvariant, finitedimensional systems. For an Nchannel plant that is free of unstable decentralized fixed modes, an unstable decentralized fixed ... 
Decentralized Blocking Zeros and Decentralized Strong Stabilization Problem
(Taylor & Francis, 199501)This paper is concerned with a new system theoretic concept, decentralized blocking zeros, and its applications in the design of decentralized controllers for linear timeinvariant finitedimensional systems. The concept ... 
An efficient and accurate technique for the incidentwave excitations in the FDTD method
(IEEE, 199806)An efficient technique to improve the accuracy of the finitedifference timedomain (FDTD) solutions employing incidentwave excitations is developed. In the separatefield formulation of the FDTD method, any incident ... 
Anamorphic Fractional Fourier TransformingOptical Implementation and Applications
(OSA Publishing, 19951110)An additional degree of freedom is introduced to fractionalFouriertransform systems by use of anamorphic optics. A different fractional Fourier order along the orthogonal principal directions is performed. A laboratory ... 
Centimeter scale atomic force microscope imaging and lithography
(American Institute of Physics, 19980921)We present a 4 mm2 image taken with a parallel array of 10 cantilevers, an image spanning 6.4 mm taken with 32 cantilevers, and lithography over a 100 mm2 area using an array of 50 cantilevers. All of these results represent ... 
Improving the accuracy of a time lens
(Optical Society of America, 1997)A method for improving the accuracy of temporal imaging with an imperfect time lens is proposed. Signal distortion arising from complicated dispersion of the delay lines can be reduced considerably by appropriate choice ...