Name
Title | ||
|---|---|---|
Efficient analytical modeling techniques for rapid integrated spiral inductor prototyping |
Abstract | ||
|---|---|---|
During the spiral inductor design process, designers and design automation tools require efficient modeling techniques for initial design space exploration in order to quickly pinpoint appropriate inductor geometries. In this paper, we introduce a new frequency-dependent model that utilizes closed-form ex- pressions to quickly characterize square spiral inductors. Our modeling approach is centered around new analytical expres- sions for the inductor's series resistance and series inductance. The model provides several orders of magnitude performance improvement over field solver-based approaches with typical errors of less than 3% when compared with numerical field solver simulations and demonstrates excellent agreement with measured data from inductors fabricated in TSMC's 0.18μm mixed-mode/RF process. I. INTRODUCTION Rapid prototyping of analog circuits is vital to meet the increasing demand for integrated mixed-signal systems. How- ever, the design of integrated spiral inductors continues to hinder the development of mixed-signal system-on-chip (SoC) analog circuits. The large inductor design space necessitates efficient modeling techniques that allow the designer or design automation tools to rapidly optimize and synthesize spiral inductor designs to meet application requirements (1). In order to enable rapid spiral inductor design, modeling techniques must provide the speed, accuracy and scalability necessary to explore the inductor design space over a wide range of process technologies, inductor geometries and op- erating frequencies. Numerical field solvers most accurately characterize spiral inductors but are hindered by excessive simulation times and memory requirements, especially for substrate modeling (2)-(4). Previously proposed closed-form modeling techniques either require technology specific fitted parameters (5), (6), or may not provide enough accuracy across the entire design space for inductor prototyping (7)- (10), which may prohibit initial design space exploration. In this paper, we introduce a new frequency-dependent model that utilizes closed-form expressions to quickly charac- terize square planer spiral inductors. Our modeling approach is centered around new analytical expressions for the induc- tor's series resistance and series inductance. We compare our model with numerical field solvers, other analytical model- ing techniques and fabricated inductors. Our model provides orders of magnitude performance improvement over field solver-based approaches with typical errors of less than 3% when compared with numerical field solver simulations and also demonstrates excellent agreement with measured data |
Year | DOI | Venue |
|---|---|---|
2005 | 10.1109/CICC.2005.1568660 | custom integrated circuits conference |
Keywords | Field | DocType |
inductors,modelling,0.18 micron,rf process,closed-form expression,design automation tools,frequency-dependent model,inductor geometry,inductor series resistance,mixed-mode process,numerical field solver simulation,rapid integrated spiral inductor prototyping,series inductance,spiral inductor design process,square spiral inductors | Inductance,Computer science,Inductor,Electronic engineering,Control engineering,Electronic design automation,Equivalent series resistance,Solver,Design process,Design space exploration,Performance improvement | Conference |
ISBN | Citations | PageRank |
0-7803-9023-7 | 14 | 1.07 |
References | Authors | |
6 | 4 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Arthur Nieuwoudt | 1 | 207 | 20.59 |
| Michael S. Mccorquodale | 2 | 106 | 13.28 |
| Borno, Ruba T. | 3 | 14 | 1.07 |
| Yehia Massoud | 4 | 772 | 113.05 |