This paper proposes an architecture of dynamically reconfigurable arithmetic circuit. Dynamic reconfiguration is a technique to realize required functions by changing hardware construction during operations. The proposed circuit is based on a complex number multiply-accumulation circuit which is used frequently in the field of digital signal processing. In addition, the proposed circuit perform...

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Petri Eloranta Name of the doctoral dissertation Direct-Digital RF Modulator for Multi-Standard Radio Transmitters Publisher School of Electrical Engineering Unit Department of Micro and Nanosciences Series Aalto University publication series DOCTORAL DISSERTATIONS 186/2014 Field of research Electronic Circuit Design Manuscrip...

This Recommendation provides the error performance objectives for real digital radio-relay links forming part of the high-grade portion of international digital connections at a bit rate below the primary rate within an integrated services digital network. This Recommendation also provides the guidance on the factors in determining performance requirements for real digital radio-relay links for...

Digital logic frequency detector whose operation is based on the analog quadricorrelator is presented. Proposed circuit consists of conventional digital logic devices without an alog elements. Therefore, it has superior reliabilities over component drifts or aging effects. Frequency linear discrimination range is ±100% of the reference clock rate. key words: digital frequency detector, quadrico...

The digital abstraction allowed us to achieve unprecedented scalability in both hardware and software complexity. Yet, circuit level digital abstraction is becoming increasingly expensive to maintain. We show it’s possible to raise the digital abstraction up to software layers and yet provide correctnession up to software layers and yet provide correctness

The least mean square (LMS) algorithm has practical problems in the analog domain mainly due to dc offset effects. If digital LMS adaptation is used, a digitizer (analog-to-digital converter or comparator) is required for each gradient signal as well as the filter output. Furthermore, in some cases the state signals are not available anywhere in the analog signal path necessitating additional a...

We propose a hybrid scattering parameter matrix for concurrent on & off – board EMI analysis of mixed RF-Digital Circuits. To start with, we first consider on–board EMI effects on digital circuits, particularly on an inverter to show the vulnerability of digital devices to RF interference and investigate both system and device level upsets due to adjacent EMI sources on Printed Circuit Boards (...

Many early vision tasks require only 6 to 8 b of precision. For these applications, a special-purpose analog circuit is often a smaller, faster, and lower power solution than a general-purpose digital processor, but the analog chips lack the programmability of digital image processors. This paper presents a programmable mixed-signal array processor which combines the programmability of a digita...

In the today’s era, reversible logics are the promising technology for the designing of low power digital logic system having major application in the field of nanotechnology, quantum computation, DNA and other low power digital circuits. Reversible logics provide zero power dissipation (Ideally) in the digital operations. There are numbers of circuit designed by the reversible logics and seque...

The paper presents project of reprogrammable chip – FPGA, designed with current-mode gates novel digital gates operating with constant, continuous power supply current. Such continuous supply is a perfect one for analog-digital circuits, which are located on the same single die. Switching of digital part of the chip don’t disturb analog part. Based on the proposed approaches to minimizing logic...