The Design and EM-Simulation of Square Spiral Inductor Using Simple Equations

Abstract

The RF/Microwave circuits are very much essential in communication and broadcasting fields. The important requirement of such a circuit is to be miniaturized and integrate planar passive components. The design of passive on chip capacitor and inductor are key components for RFIC/MMIC design technique such as filters and oscillators. In this work consider RT/Duriod substrate material and planar microstrip line to design square spiral inductor. In this paper we propose design of square spiral inductor using simple equations and compare the calculated results with obtained EM simulated results. The verification is done by varying the conductor width (W), space between the conductor (S), number of turns (N) and inner diameter (din) of the square spiral inductor structure. The observed electromagnetic simulated results gives better agreement with standard simple equations like modified wheeler (MW), current sheet Approximation (CSA) and data fitted monomial equation (DFME) at 600MHZ operating frequency. The design and simulation is carried out using NI/AWR microwave office tool.