US 12,224,499 B2
Wideband microstrip antenna array based antenna system for GHz communications
Saswati Gopal Ghosh, West Bengal (IN); and Debarati Sen, West Bengal (IN)
Assigned to THE INDIAN INSTITUTE OF TECHNOLOGY KHARAGPUR, West Bengal (IN)
Filed by THE INDIAN INSTITUTE OF TECHNOLOGY KHARAGPUR, West Bengal (IN)
Filed on Jan. 10, 2023, as Appl. No. 18/152,674.
Claims priority of application No. 202231026020 (IN), filed on May 4, 2022.
Prior Publication US 2023/0361469 A1, Nov. 9, 2023
Int. Cl. H01Q 5/30 (2015.01); H01Q 1/48 (2006.01); H01Q 5/307 (2015.01); H01Q 9/04 (2006.01); H01Q 21/06 (2006.01); H01Q 21/08 (2006.01)
CPC H01Q 5/307 (2015.01) [H01Q 1/48 (2013.01); H01Q 9/0457 (2013.01); H01Q 21/065 (2013.01); H01Q 21/08 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A wideband microstrip antenna array based antenna system comprising:
a dielectric substrate of four dielectric layers;
multiple microstrip patch antennas, wherein each of the microstrip patch antennas includes at least one U shaped slot, and the microstrip patch antennas are arranged spaced apart from each other in a linear array on top of said dielectric substrate involving close proximal disposition of said U shaped slots to operate as resonators and move higher and lower end resonance frequencies of the antenna array system;
a microstrip feed network within the dielectric substrate for feeding the microstrip patch antennas with U shaped slots by electromagnetic coupling;
dummy elements which are identical with the microstrip patch antenna on both ends of the linear array, said dummy elements are non-excitable by the microstrip feed network to reduce side lobe; and
two conducting ground planes to improve array performance with high main lobe gain.