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In this paper three methods are employed to characterize the equivalent input noise temperature of a cryogenically-cooled IF HEMT LNA. They are the conventional Y- factor method, variable-temperature method and shot-noise method. Through the measurements, their merits and drawbacks are compared.
The paper presents a software component that enables NetSolve with direct communications between servers in a non-intrusive and incremental way. Non-intrusiveness means that the software component is supplementary, working on top of the original system, which does not change at all. Increment means that the software component does not have to be installed on all computers to enable applications with...
MnFe2O4 films were prepared using the alternating target laser ablation deposition (ATLAD) technique. Cation distribution of the samples was obtained using extended X-ray absorption fine structure analysis. The saturation magnetization and anisotropy fields of the samples were measured. Electronic properties and element selective magnetic information were obtained by means of magnetic circular dichroism...
Exchange constants and band gap is predicted numerically for artificial nickel ferrite since they directly affect the magnetization and conductivity. These fundamental issues are addressed using density functional calculations to study the magnetic properties and the density of states of the material. The magnetization is deduced from the local magnetic moments calculated from the Mulliken population...
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