A 24-GHz Fully Integrated CMOS Transceiver for FMCW Radar Applications
Journal
IEEE Journal of Solid-State Circuits
Journal Volume
56
Journal Issue
11
Pages
3307-3317
Date Issued
2021
Author(s)
Abstract
A 24-GHz fully integrated frequency-modulated continuous wave (FMCW) direct conversion transceiver, implemented in a 55-nm low-power CMOS technology with a maximum $f_{\mathrm {T}}$ of 190 GHz in typical operating conditions and packaged in a 5-mm $\times $ 5-mm 32-lead quad-flat no-leads (QFN) package, is presented in this article. The single-chip transceiver uses a single 2.5-V supply while all the core circuits are powered by integrated regulators. The complex low-noise transductor in the receiver uses a quadrature hybrid to generate quadrature signals in the receiving front-end. The analog signal processing circuits including high-pass filters, low-pass filters, and programmable amplifiers are implemented following the receiver front-end circuitry. The FMCW signals are generated by an on-chip 24-GHz fractional-N frequency synthesizer. The synthesizer is completely integrated with the transceiver and provides built-in digital frequency modulation to generate chirping signals for the down-conversion local oscillator (LO) and the transmitted signals. The transmitter is composed of a balanced class-AB power amplifier driven by the FMCW signals from the frequency synthesizer. ? 1966-2012 IEEE.
Subjects
Coupler
frequency-modulated continuous wave (FMCW)
linear frequency-modulated continuous wave (LFMCW)
low-noise amplifier (LNA)
low-noise transconductance amplifier (LNTA)
phase noise
quadrature
radar
sensor
transceiver
transconductor
Chirp modulation
CMOS integrated circuits
Continuous wave radar
Frequency synthesizers
High pass filters
Low pass filters
Power amplifiers
Radio transceivers
Analog signal processing
Class-AB power amplifiers
Direct conversion transceiver
Fractional-N frequency synthesizers
Frequency-modulated continuous waves
Receiver front-ends
Single-chip transceivers
Typical operating conditions
Frequency modulation
SDGs
Type
journal article