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A general purpose VLSI median filter and its applications for image processing
(IEEE, 1989)
A general-purpose median filter configuration consisting of two single-chip median filters is proposed. One of the chips is designed for applications requiring variable word-length and variable window size, whereas the ...
Characterization of layered materials by the lamb wave lens
(IEEE, 1990)
The Lamb wave lens is a type of lens that can replace the conventional lens of an acoustic microscope for some applications. When it insonifies a layered solid structure, it excites a single mode in the structure, provided ...
Measurement of sensitivity of different wave modes to subsurface defects
(IEEE, 1988)
Excitation of acoustic wave modes in a layered solid is investigated when the solid is immersed in a liquid. This is done by computing the reflection coefficient of acoustic plane waves at the liquid-layered-solid
interface. ...
A 128-bit microprocessor compatible programmable correlator chip for use in synchronous communication
(IEEE, 1989)
A single-chip microprocessor-compatible 128-b correlator is designed and implemented in a 3-μm M2CMOS process. Full-custom design techniques are applied to achieve the best tradeoff among chip size, speed, and power ...
Design and implementation of a general purpose VLSI median filter unit and its applications
(IEEE, 1989)
A VLSI median filter unit has been designed and implemented in 3-μ m M2 CMOS, using full-custom VLSI design techniques. The unit consists of two single-chip median filters, one extensible and one real-time. The chips are ...
Generation of focused surface waves with a solid wedge
(IEEE, 1987)
Focusing of surface acoustic waves on material surfaces was achieved by axicons in liquid immersion. The system consisted of a plane acoustic wave generator obliquely insonifying a cylindrical mirror placed perpendicularly ...
A synthetic aperture imaging system using surface wave modes
(IEEE, 1995)
A synthetic aperture acoustic imaging system with a novel inversion algorithm is described. Data is obtained by using a transducer insonifying the sample surface at a critical angle which is excited by a short electrical ...
Reduction of effects of inactive array elements in phase aberration correction
(IEEE, 1993)
Phase aberration correction based on time delay estimation via minimization of sum of absolute difference (SAD) between radio frequency (RF) signals of neighboring elements is studied in the presence of missing elements. ...
Fresnel lamb wave and V-groove lenses with tunable mode selectivity
(IEEE, 1995)
The Lamb wave and V-groove lenses are distinguished by their high surface wave excitation efficiencies. However, due to the fixed incidence angle, a particular lens can only be used for materials having surface wave ...
A performance enhanced power divider structure
(IEEE, 2014)
We analyze the bandwidth capability of a divider with a series RLC circuit at the isolation arm. Analytical expressions for optimal component values are given. Bandwidth limiting effect of the pad capacitances of the chip ...