Multilevel and space-filling ground-planes for miniature and multiband antennas
First Claim
Patent Images
1. An antenna system comprising:
- an antenna element;
a ground plane;
the antenna element including a feeding point;
the ground plane operating in cooperation with the antenna element to enhance radiation efficiency in at least two non-overlapping frequency bands;
the ground plane comprising a first conducting surface, a second conducting surface, and a conducting strip;
the first conducting surface having an elongated shape with two opposite sides, the two opposites sides defining a first side and a second side;
the conducting strip is connected to the first side of the first conducting surface and to the second conducting surface allowing current to flow between the first conducting surface and the second conducting surface;
the first conducting surface extends beyond the second conducting surface;
the conducting strip is narrower than the first side of the first conducting surface;
a surface of the second conducting surface is at least two times greater than a surface of the first conducting surface;
the first conducting surface, the second conducting surface, and the conducting strip define a first structure;
the antenna element is located at the second side of the first conducting surface;
a connection element that electromagnetically couples the antenna element to the ground plane; and
the antenna system is configured to transmit and receive electromagnetic waves corresponding to the at least two non-overlapping frequency bands.
1 Assignment
0 Petitions
Accused Products
Abstract
An antenna system includes one or more conductive elements acting as radiating elements, and a multilevel or space-filling ground-plane, wherein said ground-plane has a particular geometry which affects the operating characteristics of the antenna. The return loss, bandwidth, gain, radiation efficiency, and frequency performance can be controlled through multilevel and space-filling ground-plane design. Also, said ground-plane can be reduced compared to those of antennas with solid ground-planes.
36 Citations
20 Claims
-
1. An antenna system comprising:
-
an antenna element; a ground plane; the antenna element including a feeding point; the ground plane operating in cooperation with the antenna element to enhance radiation efficiency in at least two non-overlapping frequency bands; the ground plane comprising a first conducting surface, a second conducting surface, and a conducting strip; the first conducting surface having an elongated shape with two opposite sides, the two opposites sides defining a first side and a second side; the conducting strip is connected to the first side of the first conducting surface and to the second conducting surface allowing current to flow between the first conducting surface and the second conducting surface; the first conducting surface extends beyond the second conducting surface; the conducting strip is narrower than the first side of the first conducting surface; a surface of the second conducting surface is at least two times greater than a surface of the first conducting surface; the first conducting surface, the second conducting surface, and the conducting strip define a first structure; the antenna element is located at the second side of the first conducting surface; a connection element that electromagnetically couples the antenna element to the ground plane; and the antenna system is configured to transmit and receive electromagnetic waves corresponding to the at least two non-overlapping frequency bands. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A connectivity equipment comprising:
-
a grounding element; an antenna element mounted within the connectivity equipment in operative relation to the grounding element; the grounding element is configured to provide connectivity to at least two wireless networks operating at two non-overlapping frequency bands; the antenna element including a feeding point; the grounding element comprising a first conducting surface etched on a printed circuit board, a second conducting surface, and a conducting strip; the first conducting surface having an elongated shape with two substantially opposite sides, the two substantially opposites sides defining a first side and a second side; the conducting strip is connected to the second side of the first conducting surface and to the second conducting surface allowing current to flow between the first conducting surface and the second conducting surface; the conducting strip being narrower than the first side of the first conducting surface; the width of the second conducting surface being greater than a width of the first side of the first conducting surface; the first conducting surface, the second conducting surface, and the conducting strip define a first structure; the first structure comprises a plurality of conducting polygons, each of the plurality of conducting polygons having the same number of sides; the plurality of conducting polygons are electromagnetically coupled via either capacitive coupling or ohmic contact; a contact region between directly connected conducting polygons of the plurality of conducting polygons is smaller than half of a perimeter of the directly connected conducting polygons in most of the conducting polygons of the first structure; and the antenna element is arranged nearby the first conducting surface; and a feeding means arranged on the printed circuit board, the feeding means being electromagnetically coupled to the feeding point of the antenna element. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
Specification