An Energy Efficient and Fast Triple-Interferer Sensor Based on Digitally Controlled Injection-Pulled Oscillator

This letter presents an interferer detector and digital-coder. Leveraging LC digitally controlled oscillator's (DCO) injection pulling, the injection detector senses the frequency offset between an interferer and the DCO's intrinsic frequency ( {\,f}_{{OSC}} ) which is quantized by the fr...

Full description

Saved in:
Bibliographic Details
Published in:IEEE solid-state circuits letters 2018-11, Vol.1 (11), p.211-214
Main Authors: Shin, Dongseok, Koh, Kwang-Jin
Format: Article
Language:English
Subjects:
<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">LC digitally controlled oscillator (DCO)
CMOS
Detectors
Digital signal processing
Energy consumption
Envelope detection
Frequency modulation
Frequency pulling
Generators
injection pulling
interferer detector
Radio frequency
Sensors
Solid state circuits
spectrum sensor
Switches
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This letter presents an interferer detector and digital-coder. Leveraging LC digitally controlled oscillator's (DCO) injection pulling, the injection detector senses the frequency offset between an interferer and the DCO's intrinsic frequency ( {\,f}_{{OSC}} ) which is quantized by the frequency resolution of the DCO and digitally coded by a counter and arithmetic logic to identify the interferer by the relative frequency from {f}_{{OSC}} . The presented interferer sensor implemented in 0.13- {\mu }\text{m} CMOS achieves fast scanning time of 0.8 {\mu }\text{s} for diagnosing maximum triple interferers at a frequency span ranging from 2.74 to 3.75 GHz. The energy consumption is 12 nJ per scan time, which is 41.7 {\times } smaller than prior state-of-the-arts. The sensor consumes 15.6 mW from 1.3-V supply. The chip area is 0.56 mm 2 .
ISSN:2573-9603
2573-9603
DOI:10.1109/LSSC.2019.2902987