Design of CMOS Frequency Dividers for 60GHz Applications
Date Issued
2007
Date
2007
Author(s)
Bai, Shuen-Yin
DOI
en-US
Abstract
The wireless technology has changed the style of modern life. The evolution of wireless communication continues to move toward high data rate, wide bandwidth, and high carrier frequency. With the available 7GHz unlicensed frequency spectrum, the interest of developing the emerging applications at 60GHz is growing. In wireless communication systems, the frequency divider is an essential building block for frequency synthesizers, phase-locked loops (PLL’s) and dual-conversion receiver.
Two integrated 48GHz CMOS frequency dividers with wide operation frequency range are presented for 60GHz dual-conversion receiver. The direct injection-locked technique is used to perform the signal division at millimeter-wave frequency. The deep n-well is implemented under the NMOS switch transistor to improve the locking range. Combined the band hopping and analog frequency tuning, the operation range of the frequency divider covers from 43GHz to 49GHz. In addition, a variation of the regenerative frequency divider architecture is proposed to perform divide-by-three function. The band-pass filter is developed with parasitic capacitance to improve the signal injection efficiency. The thesis demonstrates the first mm-wave divide-by-three frequency divider developed in CMOS technology.
Subjects
除頻器
frequency divider
Type
thesis
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