Abstract
In this paper, a K-band antenna with ±60° beam scanning is proposed for a mmWave (millimeter-Wave) radar sensor. Especially, we take advantages of the magnetic dipole principle, and design the antenna by employing via holes in three sides, so as to form a cavity which can be equivalently considered as magnetic dipole, resulting in the 3 dB beam width as wide as 140° in E-plane. We cascade the mmWave antenna to 1×4 and 4×4 arrays for radar transmitting and receiving, respectively. The antenna array is fabricated and implemented to a K-band radar and its wide-angle beam scanning performance is evaluated by the radar's distance and angular detections.
Highlights
Radar was commonly used for military applications in the past decades
For wide angle object detection, the antenna array with wide beam width is required, and to further improve it, the antenna beam is designed to scan from angle to angle with the assistance of Radio Frequency (RF) or digital circuits, called beam scanning radar
The measured results are in good agreement with the simulated ones. This array is utilized as the receiver in our radar sensor
Summary
Radar was commonly used for military applications in the past decades. Recently, with the development of integrated circuit and antenna technologies, the small form-factor portable FMCW (Frequency Modulated Continuous Wave) radar sensors become popular for various civilian’s applications such as autonomous vehicle [1], [2], intelligent security [3], indoor and outdoor monitoring and beyond [4]–[6]. These wide-angle scanning antennas are not suitable for K-band radar sensor because of their large size or fabricating complexity. Patch antenna possesses the low profile but cannot achieve the wide-angle beam scanning due to its narrow beam width [14]–[16]. The traditional patch antenna array for radar system proposed by [15] can achieve a beam scanning only within ±45◦. Designing well-performed beam scanning K-band radars still needs new antenna solutions for both wide-angle beam scanning and engineering implementation. A wide-angle beam scanning antenna array for K-band radar sensor is proposed based on the principle of equivalent magnetic dipole. Z. Yi et al.: Wide-Angle Beam Scanning Antenna in E-plane for K-Band Radar Sensor.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
