کنفرانس مهندسی برق ایران

صفحه اصلی / بیست و نهمین کنفرانس مهندسی برق ایران

A 1.2GHz wide bandwidth integer-N type-I PLL

نویسندگان :

Javad Tavakoli¹ Hossein Yaghobi² Samad Sheikhaei³

1- دانشگاه تهران 2- دانشگاه تهران 3- دانشگاه تهران

کلمات کلیدی :

type-I PLL, synthesizer, phase noise, delay-line filter, loop bandwidth, phase detector, VCO, loop filter

چکیده :

This paper introduces a wide bandwidth integer-N Type-I PLL. By using a novel Delay-line based filter as loop filter, the bandwidth of the proposed PLL is about 5 times greater than the bandwidth of traditional Type-I PLL. The chosen strategy in widening the PLL bandwidth is to replace the RC loop filter with a 2-tap delay-line based filter which provides a desired magnitude and phase response. Operating with a reference frequency of 10MHz, the proposed PLL provides a loop BW of about 5MHz, and a spur level of -50dBc. The presented PLL exhibits an in-band phase noise of -119 dBc/Hz at 1MHz offset. PLL total power consumption is 2.5mW from the nominal supply of 1.8V.

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بیشتر

ثمین همایش، سامانه مدیریت کنفرانس ها و جشنواره ها - نگارش 42.5.3