Fractional-N PLL Synthesizer for FMCW Signal Generator with Dual-Mode Modulation Pattern
نویسندگان
چکیده
منابع مشابه
Dual Mode Hybrid Pll Based Frequency Synthesizer for Cognitive Multi-radio Applications
This paper investigates a novel approach to implementation of multiband frequency synthesizer for cognitive multi-radio applications. The architecture here considered employs a dual-mode PLL (Phase Locked Loop) based frequency synthesizer for data applications, which is capable to switch between a fractional wideband high speed mode and an integer, narrowband and low spur mode after the settlin...
متن کاملA 1GHz Fractional-N PLL Clock Generator with Low-OSR ΔΣ Modulation and FIR-Embedded Noise Filtering
Offering less than 1ppm frequency resolution, a ΔΣ fractional-N PLL enables flexible frequency planning and reliable spread spectrum modulation for digital clock generation [1, 2]. Use of low-cost ring VCOs however, mandates a wideband PLL design, which makes it difficult for the PLL to filter out high-frequency quantization noise from the ΔΣ modulator. In many digital clocking systems, such as...
متن کاملFractional / Integer - N PLL Basics
Phase Locked Loop (PLL) is a fundamental part of radio, wireless and telecommunication technology. The goal of this document is to review the theory, design and analysis of PLL circuits. PLL is a simple negative feedback architecture that allows economic multiplication of crystal frequencies by large variable numbers. By studying the loop components and their reaction to various noise sources, ...
متن کاملFractional/Integer-N PLL Basics
Phase Locked Loop (PLL) is a fundamental part of radio, wireless and telecommunication technology. The goal of this document is to review the theory, design and analysis of PLL circuits. PLL is a simple negative feedback architecture that allows economic multiplication of crystal frequencies by large variable numbers. By studying the loop components and their reaction to various noise sources, ...
متن کاملA Dual-band Fractional-N Frequency Synthesizer for 2GHz and 5GHz
A new dual-band fractional-N frequency synthesizer is designed to support both 2GHz and 5GHz. The frequencies of two bands are synthesized by single PLL. It needs only a few additional circuits for dual band and has advantages in power and chip area. The synthesizer is composed of dual-band VCO, prescaler, 8/9 divider, PFD(phase-frequency detector), Charge Pump and LF(loop filter). 0.18um CMOS ...
متن کاملذخیره 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: Jurnal Elektronika dan Telekomunikasi
سال: 2018
ISSN: 2527-9955,1411-8289
DOI: 10.14203/jet.v18.46-52