US 11,749,902 B2
Dual-band shared-aperture antenna array based on dual-mode parallel waveguide
Zhangcheng Hao, Jiangsu (CN); and Yiwen Wu, Jiangsu (CN)
Assigned to SOUTHEAST UNIVERSITY, Jiangsu (CN)
Appl. No. 17/608,695
Filed by SOUTHEAST UNIVERSITY, Jiangsu (CN)
PCT Filed Apr. 15, 2021, PCT No. PCT/CN2021/087601
§ 371(c)(1), (2) Date Nov. 3, 2021,
PCT Pub. No. WO2022/134393, PCT Pub. Date Jun. 30, 2022.
Claims priority of application No. 202011514138.5 (CN), filed on Dec. 21, 2020.
Prior Publication US 2022/0271435 A1, Aug. 25, 2022
Int. Cl. H01Q 21/00 (2006.01); H01Q 21/06 (2006.01); H01Q 21/30 (2006.01)
CPC H01Q 21/005 (2013.01) [H01Q 21/0075 (2013.01); H01Q 21/068 (2013.01); H01Q 21/30 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A dual-band shared-aperture antenna array based on a dual-mode parallel waveguide, comprising:
a low-frequency waveguide-substrate integrated waveguide transition structure, a low-frequency multi-stage cascaded power splitter, a transverse coupling slot, a high-frequency waveguide-substrate integrated waveguide transition structure, a high-frequency multi-stage cascaded power splitter, a longitudinal coupling slot, a bottom-layer matching through-hole, a bottom-layer substrate integrated waveguide sidewall, a top-layer matching through-hole, a shared-aperture dual-mode parallel waveguide, and a shared-aperture parallel slot array, wherein the shared-aperture parallel slot array comprises a shared-aperture parallel long slot array or a shared-aperture parallel short slot array; a low-frequency signal provided by a standard waveguide first passes through the low-frequency waveguide-substrate integrated waveguide transition structure located on a bottom-layer substrate, then is input to the low-frequency multi-stage cascaded power splitter, and then is transmitted through the transverse coupling slot to the shared-aperture dual-mode parallel waveguide located at a top layer;
finally, the shared-aperture parallel long slot array or the shared-aperture parallel short slot array comprised in the shared-aperture parallel slot array is used to radiate an electromagnetic wave, to form a low-band fixed-beam slot array antenna; in addition, a high-frequency signal provided by the standard waveguide first passes through the high-frequency waveguide-substrate integrated waveguide transition structure located on the bottom-layer substrate, then is input to the high-frequency multi-stage cascaded power splitter, and then is transmitted through the longitudinal coupling slot to the shared-aperture dual-mode parallel waveguide located at the top layer; and finally, a high-band multi-beam long slot leaky-wave antenna is formed by radiating an electromagnetic wave by using the shared-aperture parallel long slot array, or a high-band fixed-beam slot array antenna is formed by radiating an electromagnetic wave by using the shared-aperture parallel short slot array.