An Improved Distributed Equivalent Circuit Modeling for RF Components by Real-Coefficient AFS Technique

Partial-Element Equivalent-Circuit Model Simulation for Designing RF-Wireless Communication Products with Embedded Passive Components

Rapidly increasing functionality and performance of RF/wireless communication products, along with mandated decreases in size, weight, and cost, have created a critical need to replace discrete, surface-mounted passive circuit components with embedded passives in substrate technologies such as Low-Temperature Cofired Ceramic (LTCC). The design process for embedded passives requires rapid electr...

An Equivalent Circuit Modeling Method for Ultra-wideband Antennas

This paper presents an effective modeling methodology for Ultra-wideband (UWB) antennas. The methodology is based on augmenting an existing narrow-band model with a macro-model while simultaneously perturbing component values of the narrow-band model. The narrow-band model is an empirical-based circuit and the macro-model described by rational functions is determined using data fitting approach...

Mosfet Modeling for Rf Circuit Design

In this paper, we discuss some important issues in MOSFET modeling for radio-frequency (RF) integratedcircuit (IC) design. We start with the introduction of the basics of RF modeling. A simple sub-circuit model is presented with comparisons of the data for both y parameter and fT characteristics. Good model accuracy is achieved against the measurements for a 0.25μm RF CMOS technology. The high ...

An Automatic Real Time Impedance Matching System for Use in an RF Electrostatics Accelerator Ion Source

Diffusion Coefficient Modeling of a Silicon Solar Cell under Irradiation Effect in Frequency: Electric Equivalent Circuit

In this paper, a theory on the determination of the diffusion coefficient of the excess minority carriers of a silicon solar cell is presented. The expression of the diffusion coefficient, related to the modulation frequency, the irradiation energy and the damage coefficient is studied and then performed by using the impedance spectroscopy method and Bode and Nyquist diagrams. Based on the diff...