A cylindrical system for biomedical microwave tomography is presented. The circular algorithms and some numerical reconstructions are discussed. Finally the experimental set-up is described and some preliminary measurements ...

The nonlinear properties of GaAs MESFET can be used to implement self-oscillating mixers. This paper describes a new single-gate MESFET X-Band mixer of this kind built on a microstrip circuit, its design constraints and ...

A theoretical analysis of the double-slug transmission line tuner and the microstrip discs is developed based on two separate models: a distribuited impedance transforming model and a lumped shunt susceptance model. No ...

The paper deals wilh the problem of radar delection of a target echo embedded in Weibull cluner and while gaussian noise. To derive a suitable processing scheme, the paper resons lo the general theory of radar delection ...

This paper describes techniques for the analysis and desing of active mixer using GaAs FET's. These techniques are based on a expansion in a Wierner-Volterra series of the nonlinearities of a simple model for the transistor ...

A method for de characterization of solid state amplifying devices has been developed thats allows one the determination of the input and o output amplifier, matching networks for low noise, maximum power transfer and ...

Detection systems with distributed sensors and data fusion are increasingly used by surveillance systems. A system formed by N inhomogeneous constant false alarm rate (CFAR) detectors (cell-averaging (CA) and ordered ...

It is presented the simulation of a fixed point digital matched filter, in order to estimate their perfomances.