CPC H01Q 21/005 (2013.01) [H01Q 21/0075 (2013.01); H01Q 21/068 (2013.01); H01Q 21/30 (2013.01)] | 8 Claims |
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.
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