Printed Spiral Winding Inductor With Wide Frequency Bandwidth (original) (raw)

A new analytical model for square spiral inductors incorporating a magnetic layer

2011

Embedding magnetic layer in inductors is an attractive option for increasing inductance density, which is a critical issue for radiofrequency applications. In this work, a magnetostatic model for square spiral inductors incorporating a magnetic layer is developed. This analytical model provides a fast and accurate calculation of inductance for integrated inductors with embedded magnetic layers either for regular cases or

OPTIMIZATION OF SPIRAL INDUCTOR WITH DIFFERENT INNER DIAMETERS

A scalable and highly accurate RF/Microwave symmetricalinductor has been designed using microstrip line. The 18 circular and 18 square structures are optimized with 600MHz operating frequency. The characteristic interest on high frequency operating circuits is inductance value and quality factor of the spiral inductor. The value of the spiral inductor is depends on conductor width (W) space between the conductor (S), turns (n) outer diameter and inner diameter of the spiral inductor. In this design change the distribution of an inner diameter from 5mil to 10milfor 3 to 5 turns of spiral inductors. The optimization of inner diameter distribution is done by keeping space (1mil)between the conductor and width (2mil) of the conductor as constant. The changing inner diameter will effect to change in magnitude of the inductance and quality factor due passive capacitive and inductive reactance effect. These spiral inductors are designed using aluminum (Al) substrate material with 15mil height from the ground plane. The cupper material is used as a conductor of thickness 0.302mm. The aim of this paper is to compare the electromagnetic simulated results with simple equations of modified wheeler (MW), current sheet Approximation (CSA) and monomial equation (ME). The passive component effect the spiral inductor is examines the variation of inductance and quality factor. The observed electromagnetic field simulated results gives better agreement with standard simple mentioned equations with 600MHz operating frequency. The validation of spiral inductor is done with different inner diameter (5mil to 10mil) and number of turns (3turns to 5 turns) of the spiral inductor.

High Frequency Analysis and Optimization of Planar Spiral Inductors Used in Microelectronic Circuits

Electronics, 2021

This paper deals with high frequency analysis of spiral inductors, used in microelectronics circuits, to optimize their configuration. Software developed, designed, and implemented by the authors for nano and micrometre spiral inductor high frequency analysis, named ABSIF, is presented in this paper. ABSIF determines the inductance, quality factor, and electrical parameters for square, hexagonal, octagonal, and circular spiral inductors and their configuration optimization for energy efficiency. ABSIF is a good tool for spiral inductor design optimization in high frequency applications and takes into account the imposed technological limits and/or the designers’ constraints. A set of spiral inductors are considered and analysed for high frequency values using ABSIF, and the results are presented in the paper. The validation of ABSIF was completed by comparing the results with those obtained using a similar commercial software, Sonnet LiteTM, which is dedicated to high frequency elec...

RF spiral planar inductor designs - preliminary results [RFIC applications

2003

Inductors that can be integrated on a silicon chip have been reported in the literature. This has lead to the development of silicon RF integrated circuits (RFICs) where previously discrete component inductors had to be used. Now the size of circuits can be greatly reduced with the integration of RF circuits or even complete systems on a silicon chip. This has raised enormous interest in the study of the on-chip inductor. This paper presents a comparison of various inductor expressions available in the literature. Error trends are highlighted and discussed in the 1 to 10 nH inductance region. The focus of the design is the square spiral inductor. The details of the 'new-physic' closed-form expression is found to be the most accurate expression and its implication to inductor synthesis is discussed.