Patent ID: 9379433
Filing Date: 2016-06-28
CPC Classification: H01Q

Claim Text:
1. An antenna comprising: a first radiating element; a second radiating element; a common ground plane between the first radiating element and the second radiating element; and a wavetrap structure coupled to the ground plane and configured to reduce correlation between the first and second radiating elements at first and second RF frequencies; wherein the wavetrap structure comprises: a first ground post connected to the ground plane; a second ground post connected to the ground plane; a first conductive strip coupled to the first ground post and having an electrical length that is one quarter of a wavelength of the first RF frequency; and a second conductive strip coupled to the second ground post and having an electrical length that is one quarter of a wavelength of the second RF frequency; wherein the ground plane has a first end and a second end opposite the first end; the first radiating element is adjacent the first end of the ground plane and the second radiating element is adjacent the second end of the ground plane; the first and second ground posts are proximate the first end of the ground plane; the first conductive strip extends away from the first ground post toward the second end of the ground plane; and the second conductive strip extends away from the second ground post toward the second end of the ground plane; and the ground plane has a first side and a second side opposite the first side; the antenna further comprising: a first feed element coupled to the first radiating element at a first end of the first radiating element proximate the first side of the ground plane; and a second feed element coupled to the second radiating element at a first end of the second radiating element proximate the first side of the ground plane; the first ground post and the second ground post are proximate the second side of the ground plane; the first conductive strip extends from the first ground post toward an open end of the second radiating element opposite the first end of the second radiating element; and the second conductive strip extends from the second ground post toward the open end of the second radiating element.