کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
445104 1443177 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
0.8 V PLL-based automatic frequency tuning system for current-mode filters
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
0.8 V PLL-based automatic frequency tuning system for current-mode filters
چکیده انگلیسی

A wide-range automatic frequency tuning system for current-mode filters is proposed in this paper. The cutoff frequency of the tunable filter is controlled by an external reference signal and is locked in the desired frequency through a current-mode based phase locked loop (PLL) circuit. Although the PLL operates in a relatively narrow band, the total tuning range of the topology is extended by interpolating an automatic frequency detector after the reference input and before the PLL. The use of current controlled oscillator, based on same blocks with those in the filter, offers accuracy and feasible design in the control path. The topology has been simulated using MOS transistor models for a 130 nm CMOS technology in 0.8 V supply voltage. The achieved overall automatic tuning range was from 2.3 MHz to 660 MHz.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: AEU - International Journal of Electronics and Communications - Volume 67, Issue 1, January 2013, Pages 10–19
نویسندگان
,