We present the development of a CMOS power amplifier covering full-band of emerging ultra wideban... more We present the development of a CMOS power amplifier covering full-band of emerging ultra wideband (UWB) applications. The UWB amplifier is designed using a combined high-pass and low-pass artificial transmission line architecture to achieve high output power and spectrum pre-shaping for UWB signals. The amplifier is implemented in 180 nm RF CMOS technology and achieves a measured transducer gain of
Organomagnesium reagents occupy a central position in synthetic organic and organometallic chemis... more Organomagnesium reagents occupy a central position in synthetic organic and organometallic chemistry. Recently, the halogen–magnesium exchange has considerably extended the range of functionalized Grignard reagents available for synthetic purposes. Functional groups such as esters, nitriles, iodides, imines, or even nitro groups can be present in a wide range of aromatic and heterocyclic organomagnesium reagents. Also various highly functionalized alkenyl magnesium species can be prepared. These recent developments as well as new applications of organomagnesium reagents in cross-coupling reactions and amination reactions will be covered in this Review.
IEEE Transactions on Microwave Theory and Techniques, 2006
We present the design and development of a novel integrated multiband phase shifter that has an e... more We present the design and development of a novel integrated multiband phase shifter that has an embedded distributed amplifier for loss compensation in 0.18-μm RF CMOS technology. The phase shifter achieves a measured 180° phase tuning range in a 2.4-GHz band and a measured 360° phase tuning range in both 3.5- and 5.8-GHz bands. The gain in the 2.4-GHz band
This paper presents a novel method called the Hypersingular Boundary Contour Method (HBCM) for tw... more This paper presents a novel method called the Hypersingular Boundary Contour Method (HBCM) for two-dimensional (2-D) linear elastostatics. This new method can be considered to be a variant of the standard Boundary Element Method (BEM) and the Boundary Contour Method (BCM) because: (a) a regularized form of the hypersingular boundary integral equation (HBIE) is employed as the starting point, and (b) the above regularized form is then converted to a boundary contour version based on the divergence free property of its integrand. Therefore, as in the 2-D BCM, numerical integrations are totally eliminated in the 2-D HBCM. Furthermore, the regularized HBIE can be collocated at any boundary point on a body where stresses are physically continuous. A full theoretical development for this new method is addressed in the present work. Selected examples are also included and the numerical results obtained are uniformly accurate.
We present the development of a CMOS power amplifier covering full-band of emerging ultra wideban... more We present the development of a CMOS power amplifier covering full-band of emerging ultra wideband (UWB) applications. The UWB amplifier is designed using a combined high-pass and low-pass artificial transmission line architecture to achieve high output power and spectrum pre-shaping for UWB signals. The amplifier is implemented in 180 nm RF CMOS technology and achieves a measured transducer gain of
Organomagnesium reagents occupy a central position in synthetic organic and organometallic chemis... more Organomagnesium reagents occupy a central position in synthetic organic and organometallic chemistry. Recently, the halogen–magnesium exchange has considerably extended the range of functionalized Grignard reagents available for synthetic purposes. Functional groups such as esters, nitriles, iodides, imines, or even nitro groups can be present in a wide range of aromatic and heterocyclic organomagnesium reagents. Also various highly functionalized alkenyl magnesium species can be prepared. These recent developments as well as new applications of organomagnesium reagents in cross-coupling reactions and amination reactions will be covered in this Review.
IEEE Transactions on Microwave Theory and Techniques, 2006
We present the design and development of a novel integrated multiband phase shifter that has an e... more We present the design and development of a novel integrated multiband phase shifter that has an embedded distributed amplifier for loss compensation in 0.18-μm RF CMOS technology. The phase shifter achieves a measured 180° phase tuning range in a 2.4-GHz band and a measured 360° phase tuning range in both 3.5- and 5.8-GHz bands. The gain in the 2.4-GHz band
This paper presents a novel method called the Hypersingular Boundary Contour Method (HBCM) for tw... more This paper presents a novel method called the Hypersingular Boundary Contour Method (HBCM) for two-dimensional (2-D) linear elastostatics. This new method can be considered to be a variant of the standard Boundary Element Method (BEM) and the Boundary Contour Method (BCM) because: (a) a regularized form of the hypersingular boundary integral equation (HBIE) is employed as the starting point, and (b) the above regularized form is then converted to a boundary contour version based on the divergence free property of its integrand. Therefore, as in the 2-D BCM, numerical integrations are totally eliminated in the 2-D HBCM. Furthermore, the regularized HBIE can be collocated at any boundary point on a body where stresses are physically continuous. A full theoretical development for this new method is addressed in the present work. Selected examples are also included and the numerical results obtained are uniformly accurate.
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