A Dual Band Fractional-N Frequency Synthesizer with a Self-Calibrated Charge Pump for WLAN Standards-Reference-Cited by-同舟云学术

A Dual Band Fractional-N Frequency Synthesizer with a Self-Calibrated Charge Pump for WLAN Standards

Published:2018-04-12 Issue:08 Volume:27 Page:1850131
ISSN:0218-1266
Container-title:Journal of Circuits, Systems and Computers
language:en
Short-container-title:J CIRCUIT SYST COMP

Author:

Azadbakht Mostafa¹^ORCID,Sahafi Ali²,Aghdam Esmaeil Najafi¹

Affiliation:

1. Department of Electrical Engineering, Sahand University of Technology Tabriz, Iran

2. Department of Electrical Engineering, University of Tabriz Tabriz, Iran

Abstract

This work presents a fully integrated fractional-[Formula: see text] frequency synthesizer that covers the entire frequency bands specified in the IEEE 802.11 a/b/g/n. In this paper, the effects of charge pump (CP) gain mismatch on spectral purity of local oscillator signal is studied theoretically and a new high precision self-calibrated CP is presented for alleviating the nonidealities. The idea is implemented in a 0.18-[Formula: see text]m standard CMOS technology. According to post layout simulation, the proposed calibration circuit demonstrates an excellent matching in the CP currents in a wide voltage range. By using this technique, the average of close-in phase noise of the designed frequency synthesizer is suppressed by more than 12[Formula: see text]dBc. The active whole chip die area is 0.475[Formula: see text]mm2 and the power dissipation from a 1.8-V DC supply is 17.3–20.6[Formula: see text]mW.

Publisher

World Scientific Pub Co Pte Lt

Subject

Electrical and Electronic Engineering,Hardware and Architecture,Electrical and Electronic Engineering,Hardware and Architecture

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0218126618501311

Reference22 articles.

1. 5-GHz CMOS wireless LANs

2. Enhancement of mechanical resonant modes by miniaturization of frequency tunable MEMS-enabled microstrip patch antenna

3. A New Linearly Tunable RF MEMS Varactor with Latching Mechanism for Low Voltage and Low Power Reconfigurable Networks

4. A new electrostatically actuated rotary three-state DC-contact RF MEMS switch for antenna switch applications

5. A 1.8-GHz LC VCO with 1.3-GHz tuning range and digital amplitude calibration

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