Publication Date

2017

Document Type

Thesis

Committee Members

Henry Chen (Advisor), Jiafeng Xie (Committee Member), Yan Zhuang (Committee Member)

Degree Name

Master of Science in Electrical Engineering (MSEE)

Abstract

The double-balanced Gilbert mixer is widely used in RF receivers. In general, it is desirable to design a wide tuning frequency Gilbert mixer for low power, high conversion gain, low noise figure, and good linearity, but they are not easy to attain simultaneously. Therefore, trade-offs always exist by tuning design parameters. To observe the trade-off relationship between each tunable parameter and to make a mixer achieve specified requirements easily (i.e., tuning frequency range, bandwidth, and power), an automated design synthesis and verification approach for Gilbert mixer is proposed. A wide tuning CMOS Gilbert mixer design synthesis while keeping the local oscillator frequency of 2 GHz is presented as an example. Designed in 180 nanometer CMOS process, the tunable Gilbert mixer achieves a tuning frequency span of 2 GHz (1.1 - 3.1 GHz), a controllable bandwidth of ~50 MHz, a high conversion gain (0.5 – 6.4 dB), a low noise figure (6.81 – 8.36 dB), and a power of 9 mW.

Page Count

52

Department or Program

Department of Electrical Engineering

Year Degree Awarded

2017


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