Abstract
A seamless scanning dual-beam leaky-wave antenna (LWA) suited for multiobject detecting and tracking without blindness exhibits potential applications in wireless communication and radar systems. The beam scanning rate is a key indicator to measure the scanning performance of LWA. However, the high scanning rate dual-beam LWA with continuous scanning is seldom considered in the published literature. Defined first as the sum of the scanning rate of each beam in this communication, a novel asymmetrical dual-beam LWA with a high scanning rate of 12.9 is then proposed based on the combination of a half-mode substrate-integrated waveguide (HMSIW)-surface plasmon polaritons (SPPs) structure and a sinusoidally modulated reactance superposing surface (SMRSS) technique. The hi gh scanning rate is attributed to the dispersion enhancement of the slotted HMSIW-SPP unit, while periodic modulation superposed and uniform slots etched on the top and bottom layers, respectively, contribute to the asymmetrical dual-beam continuous scanning. As an example, an X-band asymmetrical dual-beam LWA is implemented and measured. Over the band of 8.65–9.5 GHz [9.3% fractional bandwidth (BW)], the proposed dual-beam LWA achieves a seamless beam scanning from −65° to −2° and from −6° to +51°, respectively.
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.
