scholarly journals A DESIGN OF SWITCH ARRAY ANTENNA WITH PERFORMANCE IMPROVEMENT FOR 77 GHZ AUTOMOTIVE FMCW RADAR

2016 ◽  
Vol 66 ◽  
pp. 107-121 ◽  
Author(s):  
Doo-Soo Kim ◽  
Dong-Hee Hong ◽  
Ho-Sang Kwon ◽  
Jin-Mo Yang
Keyword(s):  
Performance Improvement ◽  
Array Antenna ◽  
Fmcw Radar ◽  
77 Ghz

Design of 77 GHz Patch Array Antenna with Horn for Industrial Radar Applications

2021 ◽  
Author(s):  
Da-Wei Li ◽  
Wei-Chen Cheng ◽  
Jwo-Shiun Sun ◽  
Guan-Yu Chen
Keyword(s):  
Array Antenna ◽  
Radar Applications ◽  
77 Ghz

scholarly journals A Compact Integration of a 77 GHz FMCW Radar System Using CMOS Transmitter and Receiver Adopting On-Chip Monopole Feeder

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 6746-6757 ◽  
Author(s):  
Oh-Yun Kwon ◽  
Chenglin Cui ◽  
Jun-Seong Kim ◽  
Jae-Hyun Park ◽  
Reem Song ◽  
...  
Keyword(s):  
Radar System ◽  
Fmcw Radar ◽  
On Chip ◽  
Cmos Transmitter ◽  
77 Ghz

A Low-Phase-Noise 77-GHz FMCW Radar Transmitter With a 12.8-GHz PLL and a $\times$ 6 Frequency Multiplier

2016 ◽  
Vol 26 (7) ◽  
pp. 540-542 ◽  
Author(s):  
Jae-Hoon Song ◽  
Chenglin Cui ◽  
Seong-Kyun Kim ◽  
Byung-Sung Kim ◽  
Sangwook Nam
Keyword(s):  
Phase Noise ◽  
Frequency Multiplier ◽  
Fmcw Radar ◽  
Low Phase Noise ◽  
77 Ghz

scholarly journals Design and Optimization for 77 GHz Series-Fed Patch Array Antenna Based on Genetic Algorithm

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3066 ◽  
Author(s):  
Shuo Yang ◽  
Lijun Zhang ◽  
Jun Fu ◽  
Zhanqi Zheng ◽  
Xiaobin Zhang ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Array Antenna ◽  
Sidelobe Suppression ◽  
Automotive Radar ◽  
Sidelobe Level ◽  
Design And Optimization ◽  
Measurement Results ◽  
Antenna Length ◽  
Half Power ◽  
77 Ghz

This paper proposes a method for designing a 77 GHz series-fed patch array antenna. Based on the traditional genetic algorithm, the study explores different array topologies consisting of the same microstrip patches to optimize the design. The main optimization goal is to reduce the maximum sidelobe level (SLL). A 77 GHz series-fed patch array antenna for automotive radar was simulated, fabricated, and measured by employing this method. The antenna length was limited to no longer than 3 cm, and the array only had a single compact series with the radiation patch about 1.54 mm wide. In the genetic algorithm used for optimization, the maximum sidelobe level was set equal to or less than −14 dB. The measurement results show that the gain of the proposed antenna was about 15.6 dBi, E-plane half-power beamwidth was about ±3.8°, maximum sidelobe level was about −14.8 dB, and H-plane half-power beamwidth was about ±30° at 77 GHz. The electromagnetic simulation and the measurement results show that the 77 GHz antenna designed with the proposed method has a better sidelobe suppression by over 4 dB than the traditional one of the same length in this paper.

scholarly journals Planar millimeter wave radar frontend for automotive applications

2003 ◽  
Vol 1 ◽  
pp. 125-129 ◽  
Author(s):  
J. Grubert ◽  
J. Heyen ◽  
C. Metz ◽  
L. C. Stange ◽  
A. F. Jacob
Keyword(s):  
Continuous Wave ◽  
Phase Lock Loop ◽  
Automotive Applications ◽  
Cruise Control ◽  
Fully Integrated ◽  
Fmcw Radar ◽  
Wave Radar ◽  
Feed Network ◽  
Zukünftige Entwicklungen ◽  
77 Ghz

Abstract. A fully integrated planar sensor for 77 GHz automotive applications is presented. The frontend consists of a transceiver multichip module and an electronically steerable microstrip patch array. The antenna feed network is based on a modified Rotman-lens and connected to the array in a multilayer approach offering higher integration. Furthermore, the frontend comprises a phase lock loop to allow proper frequency-modulated continuous wave (FMCW) radar operation. The latest experimental results verify the functionality of this advanced frontend design featuring automatic cruise control, precrash sensing and cut-in detection. These promising radar measurements give reason to a detailed theoretical investigation of system performance. Employing commercially available MMIC various circuit topologies are compared based on signal-tonoise considerations. Different scenarios for both sequential and parallel lobing hint to more advanced sensor designs and better performance. These improvements strongly depend on the availability of suitable MMIC and reliable packaging technologies. Within our present approach possible future MMIC developments are already considered and, thus, can be easily adapted by the flexible frontend design. Es wird ein integrierter planarer Sensor für 77 GHz Radaranwendungen vorgestellt. Das Frontend besteht aus einem Sende- und Empfangs-Multi-Chip-Modul und einer elektronisch schwenkbaren Antenne. Das Speisenetzwerk der Antenne basiert auf einer modifizierten Rotman- Linse. Für eine kompakte Bauweise sind Antenne und Speisenetzwerk mehrlagig integriert. Weiterhin umfasst das Frontend eine Phasenregelschleife für eine präzise Steuerung des frequenzmodulierten Dauerstrichradars. Die aktuellen Messergebnisse bestätigen die Funktionalit¨at dieses neuartigen Frontend-Designs, das automatische Geschwindigkeitsregelung, Kollisionswarnung sowie Nahbereichsüberwachung ermöglicht. Die Qualität der Messergebnisse hat weiterführende theoretische Untersuchungen über die potenzielle Systemleistungsfähigkeit motiviert. Unter Berücksichtigung von kommerziell erhältlichenMMICs werden verschiedene Schaltungstopologien auf der Grundlage des Signal-Rausch-Verhältnisses verglichen. Sowohl für sequenzielle als auch für parallele Ansteuerung der Antennenkeulen wird eine deutliche Leistungssteigerung ermittelt. Diese Verbesserungen hängen maßgeblich von der Verfügbarkeit geeigneter MMICs und einer zuverlässigen Aufbau- und Verbindungstechnik ab. Das vorliegende Frontend-Konzept kann auf Grund seiner Flexibilität leicht an derlei zukünftige Entwicklungen angepasst werden.

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