Volume 12 Number 4 December 2022

    
Models for Doppler’ Radar for Beam Streaming Capabilities

Peter Z. Petkov, Rosen Vitanov and Ivaylo Nachev

https://doi.org/10.6025/jes/2022/12/4/89-95

Abstract In the current work we have designed a Doppler’ radar which will accommodate more coverage and beam steering capabilities. The new design antenna permits tiny physical attributes, low cost and ensure more reliability that is possible for autonomous flying vehicle to find obstacles in flights. It will help to modify the positions.... Read More


PSpice Input based Macro-definitions Measures for RF Planers

Elissaveta Gadjeva

https://doi.org/10.6025/jes/2022/12/4/96-103

Abstract We have introduced a system for receiving the measures for behavioural RF planar. The modalities are based on the S-parameter dependant data. With the help of the macro-definitions in the graphical analyser, we have computer the realization. We have supported the behavioural model with PSpice input language. We have performed the simulation-based experiments that ensure the computer model validity and... Read More


Managing the Noise Effect of Operational Amplifiers

Georgi Valkov and Elissaveta Gadjeva

https://doi.org/10.6025/jes/2022/12/4/105-110

Abstract In the low noise operational amplifiers, the noise is an issue. To offset the noise effects, we have developed a description Verilog which is a dynamic macro-model. We have also performed testing and found that the model is more efficient when comparing with the compatible Spice library model.... Read More