Graduation Semester and Year

2007

Language

English

Document Type

Thesis

Degree Name

Master of Science in Electrical Engineering

Department

Electrical Engineering

First Advisor

Sungyong Jung

Abstract

In this thesis, a CMOS 2.4 GHz Low noise amplifier (LNA) and Voltage-controlled oscillator (VCO) was designed and simulated. These circuits were designed to operate in the 2.4GHz Industrial Scientific Medicine (ISM) band and to achieve Bluetooth and Wifi standard specifications. High-Q RF MEMS air-suspended circular spiral inductors are used in both circuits. High-Q inductors give the circuit better performance parameters including higher gain, lower noise figure and narrower bandwidth. The integration of these RF MEMS inductors onto RF circuit chips was carried out using the UV-LIGA technique and an additive pattern transfer technique such as electroplating. The LNA maintains a gain of 10dB and noise figure of 0.8dB at 2.4 GHz. With an input reflection coefficient of -10.8dB and output reflection coefficient of -12.93dB, the LNA matches successfully with 50O load at 2.4 GHz. The VCO maintains an average output swing of 1.95V in a frequency range of 2.94GHz to 2.2GHz achieving a 740GHz of tuning range.

Disciplines

Electrical and Computer Engineering | Engineering

Comments

Degree granted by The University of Texas at Arlington

Download

Share

COinS