NDLI: 0.18 mW/pole inverter-based Gm-C bandpass filter with automatic frequency tuning

Content Provider	IET Digital Library
Author	Zhou, Mingzhu Wang, Keping
Abstract	A low-power Gm-C filter with the elliptic prototype targeting wireless application of the IEEE 802.15.4 (ZigBee) standard is presented. A modified inverter-based Gm cell is proposed to increase the current efficiency. Due to the tail current source, this Gm cell also shows better common-mode rejection and power supply rejection performance than traditional operational transconductance amplifier (OTA) structure. The filter is implemented in a 65 nm CMOS process. It achieves a figure of merit of 0.01 fJ with a power consumption of 0.18 mW/pole from a 1.2 V supply voltage. It provides stopband attenuation better than 40 dB, and an in-band IIP3 of 9 dBm. An automatic frequency tuning circuit based on sine-wave PLL method is introduced to compensate for the process variations. The centre frequency and bandwidth can be simultaneously tuned to satisfy the specifications. They are also stable over the process variations with only 2.3% deviation.
Starting Page	943
Ending Page	945
Page Count	3
ISSN	00135194
Volume Number	54
e-ISSN	1350911X
Issue Number	Issue 15, Jul (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/54/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2018.1128
Journal	Electronics Letters
Publisher Date	2018-06-19
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Automatic Frequency Tuning Automatic Frequency Tuning Circuit Band-pass Filter Centre Frequency Circuit Tuning CMOS Integrated Circuit CMOS Process Common-mode Rejection Current Efficiency Elliptic Filter Elliptic Prototype Figure of Merit Filter And Other Network IEEE 802.15.4 Standard Inverter-based Gm-C Bandpass Filter Invertors Low-pass Filter Low-power Gm-C Filter OTA Structure Power Consumption Power Electronics Power Supply Power Supply Rejection Performance Sine-wave PLL Method Size 65 Nm Stopband Attenuation Supervisory Circuit Tail Current Source Voltage 1.2 V Wireless Application Zigbee ZigBee Standard
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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