issue 7-8

20160708-04
Autonomous management issues in Future Internet
Anastas Nikolov

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Internet becomes more and more scalable infrastructure that steadies the social and economic life on the earth. This circumstance leads the need to develop new networks or to expand the old ones in way to meet user and device ...  read more

20160708-03
Overview of bulk acoustic wave technology and its applications
Milena Terzieva

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Abstract. During the last years Bulk Acoustic Wave (BAW) devices became compelling for frequencies above 1.5GHz, and demonstrated their competitive advantages compared to Surface Acoustic Wave (SAW) devices for applications ...  read more

20160708-02
SCP-RPSC – the key technology in the next generation steerable lines for satellite communications
Veselin Demirev

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A retrospective review of the author research, dealing with possible applications of SCP-RPSC technology in the next generation steerable lines for satellite communications, is given in this report. The analysis shows that ...  read more

20160708-01
Generalized Erlang-B model in case of state-dependent arrival and departure processes
Seferin Mirtchev

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In this article, a generalization of the classic full availability multi-server loss system with generalized Poisson arrival process and generalized Bernoulli departure process is proposed. The generalized full availability ...  read more

20170708-full
Issue 7-8, 2017

ELECTROTECHNICA & ELECTRONICA E+E

Vol. 52. No 7-8/2017
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA

20170708-full

 

C O N T E N T S

ELECTRONICS

Georgi Panov
Overview of frequency compensations in the CMOS operational amplifiers, Part two – Advance solutions 1

Viktor Tomov, Serafim Tabakov
Modern advances in energy based electrosurgical devices 10

TELECOMMUNICATIONS SCIENCE

Peter Apostolov, Alexey Stefanov
Non uniform array antenna with three Luneburg lenses 14

APPLICATION IN PRACTICE

Emil Vladkov


 ...  read more

20170708-05
From electrica to invariant automatica (Or how to use the knowledge about Theory of electricity for enter into Theory of invariant automatic control) Part one: System and invariant electric model
Milan Stankov

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От електрика към инвариантна автоматика (или как да използваме познанията си по „Теоретична електротехника“ за да вникнем ...  read more

20170708-04
Practical implementation of integrated ambient light sensors in visible light illuminance measurements
Emil Vladkov

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Modern Ambient Light Sensor (ALS) integrated circuits can be used not only in control and automation tasks they have been designed for but due to their useful additional features can also be implemented at the heart of measurement ...  read more

20170708-03
Non uniform array antenna with three Luneburg lenses
Peter Apostolov, Alexey Stefanov

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This article is an extension of research on the method of compressed cosines in array antennas synthesis. Theory and technical solution for the synthesis of non-uniformly spaced linear array with three Luneburg lenses are ...  read more

20170708-02
Modern advances in energy based electrosurgical devices
Viktor Tomov, Serafim Tabakov

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A modern electrosurgical apparatus incorporates digital mechanisms to control the effect of radio frequency (RF) energy delivered to the body tissue. These mechanisms range from a closed loop system with constant power delivery ...  read more

Overview of frequency compensations in the CMOS operational amplifiers, Part two – Advance solutions
Georgi Panov

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An overview of several common used frequency compensations in the CMOS operational amplifiers is presented. The advantages and disadvantages for each of them are given based on mathematical analysis. Practical circuit examples ...  read more