An x-band cmos digital phased array radar from hardware to software
Journal
Sensors
Journal Volume
21
Journal Issue
21
Date Issued
2021
Author(s)
Abstract
Phased array technology features rapid and directional scanning and has become a promis-ing approach for remote sensing and wireless communication. In addition, element-level digitization has increased the feasibility of complicated signal processing and simultaneous multi-beamforming processes. However, the high cost and bulky characteristics of beam-steering systems have prevented their extensive application. In this paper, an X-band element-level digital phased array radar utiliz-ing fully integrated complementary metal-oxide-semiconductor (CMOS) transceivers is proposed for achieving a low-cost and compact-size digital beamforming system. An 8–10 GHz transceiver system-on-chip (SoC) fabricated in 65 nm CMOS technology offers baseband filtering, frequency translation, and global clock synchronization through the proposed periodic pulse injection tech-nique. A 16-element subarray module with an SoC integration, antenna-in-package, and tile array configuration achieves digital beamforming, back-end computing, and dc–dc conversion with a size of 317 × 149 × 74.6 mm3 . A radar demonstrator with scalable subarray modules simultaneously realizes range sensing and azimuth recognition for pulsed radar configurations. Captured by the suggested software-defined pulsed radar, a complete range–azimuth figure with a 1 km maximum observation range can be displayed within 150 ms under the current implementation. ? 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Subjects
Antenna-in-package (AiP)
Complementary metal-oxide-semiconductor (CMOS)
Digital array radar
Digital beamforming (DBF)
Phased array
Pulsed radar
Radar signal detection
System-on-chip (SoC)
Transceiver
X-band
Antenna phased arrays
Beam forming networks
Beamforming
CMOS integrated circuits
Dielectric devices
Metals
Microwave antennas
MOS devices
Oxide semiconductors
Pulsed lasers
Radar antennas
Radio transceivers
Remote sensing
Signal detection
Tracking radar
Antenna in packages
Antenna-in-package
Array radars
Complementary metal-oxide-semiconductor
Digital arrays
Digital beamforming
Phased-arrays
Pulsed radars
Radar signal detections
System-on-chip
X bands
Type
journal article