Firas Mohammed Ali
 Write for Microwaves & RF
2 results found for Firas Mohammed Ali, displaying items 1 - 2

December 2007   [Components]
Estimate Microstrip Substrate Relative Dielectric Constant
Firas Mohammed Ali Al-Raie Department Head The Polytechnic Higher Institute of Yefren, Libya, Department of Electronic Engineering, e-mail: firas@ieee.org Microstrip lines are commonly used in microwave circuits, although their performance is subject to the type of substrate material selected for a printed-circuit board (PCB). One of the more important material parameters for the substrate is the...

October 2006   [Components]
Practical Approach Yields Class C PA
Broadband Class C power amplifiers (PAs) are useful in certain communications bands. Although now integrated into the Advanced Design System (ADS) simulation software from Agilent-EEsof (www.agilent.com), the Touchstone simulation software at one time was a powerful tool for developing and optimizing impedance matching networks for such amplifiers. What follows is a design approach to show how to extract the optimum...