Sign in to use this feature.

Years

Between: -

Subjects

remove_circle_outline

Journals

Article Types

Countries / Regions

Search Results (1)

Search Parameters:
Keywords = auto frequency calibration (AFC)

Order results
Result details
Results per page
Select all
Export citation of selected articles as:
14 pages, 1687 KiB  
Article
A Ku-Band Fractional-N Frequency Synthesizer with Adaptive Loop Bandwidth Control
by Youming Zhang, Xusheng Tang, Zhennan Wei, Kaiye Bao and Nan Jiang
Electronics 2021, 10(2), 109; https://doi.org/10.3390/electronics10020109 - 7 Jan 2021
Cited by 5 | Viewed by 3759
Abstract
This paper presents a Ku-band fractional-N frequency synthesizer with adaptive loop bandwidth control (ALBC) to speed up the lock settling process and meanwhile ensure better phase noise and spur performance. The theoretical analysis and circuits implementation are discussed in detail. Other key [...] Read more.
This paper presents a Ku-band fractional-N frequency synthesizer with adaptive loop bandwidth control (ALBC) to speed up the lock settling process and meanwhile ensure better phase noise and spur performance. The theoretical analysis and circuits implementation are discussed in detail. Other key modules of the frequency synthesizer such as broadband voltage-controlled oscillator (VCO) with auto frequency calibration (AFC) and programable frequency divider/charge pump/loop filter are designed for integrity and flexible configuration. The proposed frequency synthesizer is fabricated in 0.13 μm CMOS technology occupying 1.14 × 1.18 mm2 area including ESD/IOs and pads, and the area of the ALBC is only 55 × 76 μm2. The out frequency can cover from 11.37 GHz to 14.8 GHz with a frequency tuning range (FTR) of 26.2%. The phase noise is −112.5 dBc/Hz @ 1 MHz and −122.4 dBc/Hz @ 3 MHz at 13 GHz carrier frequency. Thanks to the proposed ALBC, the lock-time can be shortened by about 30% from about 36 μs to 24 μs. The chip area and power consumption of the proposed ALBC technology are slight, but the beneficial effect is significant. Full article
(This article belongs to the Special Issue RF/Mm-Wave Circuits Design and Applications)
Show Figures

Figure 1

Back to TopTop