This paper presents a design of 2.4 GHz low noise amplifier (LNA) for wireless sensor network (WSN) applications using CMOS 0.13 μm Silterra process. The proposed LNA employs a self-biased inverter to obtain high gain and able to operate at low supply voltage. The simulation results indicated that the proposed LNA achieves an input return loss (S11) of -37.7 dB, output return loss (S22) of -28....

We investigate the use of Hartree-Fock and density functional perturbative corrections for estimating the counterpoise correction (CPC) for interaction energies at the self-consistent field level. We test our approach using several popular basis sets on the S22 set of weakly bound systems, which can exhibit large basis set superposition errors. Our results show that the perturbative approaches ...

The motion of a satellite about a rotating triaxial body will be investigated, stressing on the case of slow rotation. The Hamiltonian of the problem will be formed including the zonal harmonic J2 and the leading tesseral harmonics C22 and S22. The small parameter of the problem is the spin rate ( ) of the primary. The solution proceeds through three canonical transformations to eliminate in su...

Dedicated to Hans Schneider on the occasion of his seventieth birthday. Abstract. Let A be an entrywise nonnegative n n matrix and let sk := trace (A) (k = 1;2; : : :). It is shown that if n is odd and s1 = 0, then (n 1)s4 s22. The result is applied to show that (3; 1 2 (1 p17); 2; 2) is not the spectrum of a nonnegative 5 5 matrix while (3; 1 2 (1 p 17); 2; 2;0) is the spectrum of a nonnegativ...

The non-local van der Waals density functional (vdW-DF) of Dion et al (2004 Phys. Rev. Lett. 92 246401) is a very promising scheme for the efficient treatment of dispersion bonded systems. We show here that the accuracy of vdW-DF can be dramatically improved both for dispersion and hydrogen bonded complexes through the judicious selection of its underlying exchange functional. New and published...

In this paper, a novel method for interstage matching network design in the smith chart is presented. This technique is based on matching the reflection coefficients between input of interstage matching network and S22 of the first transistor with considering input VSWR and the gain of the complete amplifier (or output of the complete amplifier if the matching is applied to the output of the in...