Abstract
In recent years, due to the development of wireless communications, RF integrated circuits (RFIC) has become increasingly complex and as our demand of products- implementation of the speed faster and faster, smaller and smaller, faster,and more efficient, radio frequency integrated circuit design seems to be much more important and difficult. However, the design of RF integrated circuits is a back-end work. Namely, the people who study the integrated circuit production materials live in the basement, the people who use simulation software to simulate circuit elements’ parameters live on the first floor, and the integrate circuit designers live on the second floor. We could know that before a designer start to design a circuit, there are many people who have done a lot of effort. We live on the first floor! We use an electromagnetic simulation software – Fasthenry to simulate and analysis spiral inductors, and help others to learn more about spiral inductor characteristics through our experiments, and it would certainly save a lot of time, money and effort for them. This thesis can also let people get familiar with how to simulate spiral inductor by Fasthenry, and find the best quality inductor for designer. This paper will identify how to design a proper Fasthenry spiral inductor structure input file, and then described the details about how to design a Fasthenry complete or incomplete substrate structure. Furthermore, we use an automated simulation program, it would not only shorten the time that user have to spent, but also avoided input errors. We also developed some different versions of automated simulation program, we offered three different shapes of spiral inductor structures automated program, ex: rectangular, hexagonal, and octagonal spiral inductors. We designed some test structures to observe whether the trend of inductance and resistance of spiral inductor is right, and find out how to design a better spiral inductor.