A Wideband High-Speed Frequency Synthesizer Using DDS

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A wideband digital frequency synthesizer

I I I I / With the rapid advance in CMOS technology. the trend.of the VLSI then towards system-on-chip (SOC) where design methodology. cost. and turnaround time are major issues. Concepts of intellectual property (IP) are then proposed to fit for SOC designs. Based on a DFS controller IP [4]. a wideband digital frequency synthesizer (DFS) is proposed to fit in with the wireless LAN applications...

متن کامل

FH-SS DDS-PLL based Frequency Synthesizer

A scheme of frequency hopping spread spectrum (FHSS) frequency synthesizer suitable for synthesis of radio-frequency (RF) carrier signal in very high frequency (VHF) band is proposed, implemented and tested. The synthesizer is based on the direct digital frequency synthesis (DDFS or DDS) and phase locked loop (PLL) with dynamic monitoring of varicap’s voltage to reduce switching time. The resul...

متن کامل

A 1.35 GHz CMOS wideband frequency synthesizer for mobile communications

The design and simulation of a 1.35 GHz fully integrated CMOS frequency synthesizer for a double band receiver is presented. The proposed synthesizer is based in a wide-band PLL topology with a high reference frequency. This approach allows obtaining low phase noise, fast switching time, a low divider ratio and a reduction in the total chip area. Besides, the use of a novel charge-pump circuit ...

متن کامل

Phase Frequency Detector Using Transmission Gates for High Speed Applications

In this paper a new phase-frequency detector is proposed using transmission gates which can detect phase difference less than 500ps. In other word, the proposed Phase-frequency Detector (PFD) can work in frequencies higher than 1.7 GHz, whereas a conventional PFD operates at frequencies less than 1.1 GHz. This new architecture is designed in TSMC 0.13um CMOS Technology. Also, the proposed PFD a...

متن کامل

6 HIGH SPEED DACs AND DDS SYSTEMS

A frequency synthesizer generates multiple frequencies from one or more frequency references. These devices have been used for decades, especially in communications systems. Many are based upon switching and mixing frequency outputs from a bank of crystal oscillators. Others have been based upon well understood techniques utilizing phase-locked loops (PLLs). This mature technology is illustrate...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: The Journal of Korean Institute of Electromagnetic Engineering and Science

سال: 2014

ISSN: 1226-3133

DOI: 10.5515/kjkiees.2014.25.12.1251