Iterative implementation of approximate solutions for electromagnetic scattering

Abstract

A 2.4-GHz WLAN receiver fabricated by 90-nm RF CMOS technology, using SIP with external matching networks for the dual IF double downconversion applications has been demonstrated. A high power gain of 36.24 dB with a low DSB noise figure of 2.68 dB has been achieved in an available linearity operation. Therefore, this proposed circuit could improve the design flexibility of back-end stages. , A high gain and low supply voltage LNA for the direct conversion application with 4-KV HBM ESD protection in 90-nm RF CMOS, IEEE Microwave Wireless Compon Lett 16 (2006), 612-614. 3. K.R. Rao, J. Wilson, and M. Ismail, A CMOS RF front-end for a multistandard WLAN receiver, IEEE Microwave Wireless Compon Lett 15 (2005), 321-323. 4. K.High-performance large-inductance embedded inductors in thin array plastic packaging (TAPP) for RF system-in-package applications, ABSTRACT: This article introduces a recursive formula, in which any approximate method can, iteratively, be incorporated to solve electromagnetic scattering problems. The use of extended Born approximation and quasi-analytical approximation in this formula results in two series (algorithms), whose convergence properties are discussed. Numerical examples are given to demonstrate merits and the range of applicability of the new series.This example aims at the study of the IEBA, IQA, and HOGEBA algorithms at low frequencies for two models as follows:Model 1: R ϭ 100 cm, ⌬␦ ϭ 20 mm, b ϭ 0 , b ϭ 0 ϭ 5 0 , ϭ 100 mS/m, source ϭ PW

An analytical approach to estimate the number of small scatterers in 2D inverse scattering problems

“…, M so long as M < N r and M N t for receive mode and M < N t and M N r for transmit mode. Finally, one can use equation (23), simultaneously, to obtain the generalized pseudospectrum equation (24a) [13] P r,t (X) = 1…”

“…In this simulation, we use the MOM method to compute the K matrix. In figures 7(a) and (b), the scattered field for two cylinders located at positions (−0.2λ, −0.2λ) and (0.2λ, 0.2λ) which resulted from the MOM approach compared with the iterative Born approximation method [23]. As shown in figures 7(c) and (d), our method can determine the number of small dielectric cylinders well, but it must be considered that when the size of cylinders is increased, the MUSIC algorithm cannot accurately estimate the location of the cylinders and the proposed methods.…”