Patent ID: 9240631
Filing Date: 2016-01-19
CPC Classification: G06K,H01Q

Claim Text:
1. An omni-directional shorted rectangular microstrip antenna having a reduced area ground plane, said antenna comprising: a. a rectangular, metal, ground plane having a length along the of about 0.24λ, where λ is the free space wavelength of the antenna; b. a substrate disposed on top of said ground plane, said substrate comprising a material having a dielectric constant of at least 4 and a bore for accepting a power feedline; c. a radiating patch disposed on top of said substrate and connected to said feedline, said patch having a length measured from the connection point of the feedline to one side of the patch and width, said width equaling the distance measured between opposing sides of the patch perpendicular to the length of the patch; d. a shorting wall disposed between said ground plane and said patch at a predetermined location relative to the ground plane and the patch; and e. a power feedline, said feedline connected to said patch through said substrate, where said antenna has a gain of −12 dbli.