In this paper, a mixer topology selection for a multi-standard high image-reject front-end is presented. The receiver is intended to work for Digital Enhanced Cordless Telephone (DECT) systems (at 1.9 GHz and 2.4 GHz) and for Bluetooth (at 2.4 GHz). It will be implemented in 0 18 μm CMOS technology. A double-quadrature low-IF architecture is employed because it can provide a high image rejectio...

The three existing dominant network families, i.e., CNNs, Transformers and MLPs, differ from each other mainly in the ways of fusing spatial contextual information, leaving designing more effective token-mixing mechanisms at core backbone architecture development. In this work, we propose an innovative token-mixer, dubbed Active Token Mixer (ATM), to actively incorporate information tokens glob...

This paper presents a novel digital circuit, based on the analog Dual Mixer Time Difference circuit, developed by David W. Allan, designed to characterise oscillators frequency stability. The proposed digital circuit, named Digital Dual Mixer Time Difference (DDMTD), is capable of measuring time differences between two digital clock signals with very fine resolution (subpicosecond) using a rela...

In this paper, in order to design a K-band commongate Gilbert-cell mixer via a 0.18 lm CMOS technology, thepNetwork and post-distortion cancellation (PDC) techniques are implemented simultaneously, resulting in the improvement of gain, bandwidth, noise figure and linearity. Also, a new method for implementing the p-Network, using the parasitic capacitances between RF and LO stage nodes, is prop...

a watermarking scheme for grayscale image isproposed based on a family of the chaotic maps and discretecosine transform. jacobian elliptic mapis employed to encrypt ofwatermarked logo. piecewise nonlinear chaotic map is also usedto determine the location of dct coefficients for the watermarkembedding. the purpose of this algorithm is to improve theshortcoming of watermarking such as small key s...

Chaotic advection in three-dimensional unsteady incompressible laminar flow By J U L Y A N H. E. C A R T W R I G H T1;2y , M A R I O F E I N G O L D3z , AND O R E S T E P I R O1;4{ 1Departament de Fı́sica, Universitat de les Illes Balears, 07071 Palma de Mallorca, Spain. 2Centre de Càlcul i Informatització, Universitat de les Illes Balears, 07071 Palma de Mallorca, Spain. 3Department of Physics,...