It would be desirable if computers could solve problems without the need for a human to write the detailed programmatic steps. That is, it would be desirable to have a domainindependent automatic programming technique in which "What You Want Is What You Get" ("WYWIWYG" – pronounced "wow-eee-wig"). Genetic programming is such a technique. This paper surveys three recent examples of problems (fro...

This paper presents a design of microstrip line tunable bandpass filter (BPF) with transmission zero (TZ) that can accommodate arbitrarily terminated input and output port impedances ( Zs xmlns:xlink="http://www.w3.org/1999/xlink">ZL ≠ 50 Ω). We extracted new coupling ...

An electronic monitoring system has been developed to detect the four conditions that usually lead to fibrillation in the in­ farcted heart_ A rtifact-free QRS detection is aecomplished by passing the preamplified QRS through a bandpass filter, an automatie gain­ control (AGC) circuit, a full-wave rectifier, a nonlinear amplifier, and positive and negative slope detectors. High-threshold logic ...

Breast Cancer is among the top five causes of cancer death and the topmost cause among women worldwide. The early diagnosis through simple, non-invasive and inexpensive screening can provide great deal of aids. Multi-frequency Electrical Impedance Spectroscopy (EIS) is quite attractive in this context as the instrumentation is relatively simple and research has demonstrated application in breas...

Introduction: Recently, the bandpass LC current mirror has been used to increase conversion gain by combining the output differential currents at the high frequency [1, 2]. However, the passive inductors employed in the LC current mirror always occupy large chip area. In this work, the passive inductors in the LC current mirror are replaced by the active inductors consisting of the common-colle...

This article introduces a circuit which can function both as a quadrature oscillator and as a universal biquad filter (lowpass, highpass, bandpass). When the circuit functions as a universal biquad filter, the quality factor and pole frequency can be tuned orthogonally via the input bias currents. When it functions as a quadrature oscillator, the oscillation condition and oscillation frequency ...

0030-4018/$ see front matter 2008 Elsevier B.V. A doi:10.1016/j.optcom.2008.08.005 * Corresponding author. Tel.: +86 27 87792367. E-mail addresses: [email protected] (J. Don (X. Zhang). We experimentally study both reshaping of nonreturn-to-zero (NRZ) signal and NRZ to pseudoreturn-tozero (PRZ) format conversion based on self-phase modulation of a semiconductor optical amplifier (SOA) and...

In this paper, we evaluate the impact of copper (Cu) passive components on RF circuit performance. A fully-differential RF Frontend is used as a test vechicle to compare the Cu 0.18 copper process with a traditional 0.25 aluminium (Al) process. The RF Front-end contains a balun and a low noise amplifier (LNA) that are designed with spiral inductors and capacitors. CMOS spiral inductor Q values ...

In this paper we evaluate the impact of copper passive components on RF circuit performance. A fully-differential RF Front-end is used as a test vehicle to compare the UMC 0.18 micron copper process with a traditional 0.25 micron aluminium process. The RF Front-end contains a balun and a low noise amplifier (LNA) that are designed with spiral inductors and capacitors. Spiral inductor Q values r...