Ultra-broadband loop antenna for wireless communication and energy transceiver
A loop antenna, which contains a loop portion that extends along a virtual closed shape. The loop portion is opened-ended and have two ends that are separated by a gap. The loop antenna further includes a first equivalent capacitive coupling element (eCCE) that is at least partially adjacent to the gap. The first eCCE is connected to the loop portion near the gap. The loop antenna supports functionalities of mobile electronic devices in wireless communication and wireless energy transceiving in multiple or ultra-broad frequency bands.
1 . A loop antenna, comprising:
a) a loop portion that extends along a virtual closed shape; the loop portion being opened-ended and having two ends that are separated by a gap;
b) a first equivalent capacitive coupling element (eCCE) that is at least partially adjacent to the gap;
wherein the first eCCE is connected to the loop portion near the gap;
wherein, at each of the two ends of the loop portion, a feeding terminal is configured to feed the loop antenna.
2 . The loop antenna according to claim 1 , wherein both the loop portion and the first eCCE are electrically conductive strips and have surfaces; the surfaces of the loop portion and the first eCCE being parallel to each other.
3 . The loop antenna according to claim 2 , wherein the surfaces of the loop portion and the first eCCE are located substantially in a same virtual plane as the virtual closed shape.
4 . The loop antenna according to claim 2 , wherein the surfaces of the loop portion and the first eCCE are substantially perpendicular to a virtual plane in which the virtual closed shape is located.
5 . The loop antenna according to claim 2 , wherein the loop portion and the first eCCE are substantially parallel to each other along their directions of extension, such that a spacing between the first eCCE and the loop portion is substantially unchanged.
6 . The loop antenna according to claim 1 , wherein the virtual closed shape is a round shape;
the loop portion having a shape of an annular sector.
7 . The loop antenna according to claim 6 , wherein the first eCCE is located at one of a radially inward position and a radially outward position of the loop portion.
8 . The loop antenna according to claim 7 , further comprises a second eCCE; wherein the second eCCE is located at the other one of the radially inward position and the radially outward position of the loop portion.
9 . The loop antenna according to claim 8 , wherein both the second eCCE and the first eCCE are connected to the loop portion near the gap.
10 . The loop antenna according to claim 8 , wherein the loop portion and the second eCCE are substantially parallel to each other along their directions of extension, such that a spacing between the second eCCE and the loop portion is substantially unchanged.
11 . The loop antenna according to claim 1 , further comprises a first connecting line that electrically connects the loop portion and the first eCCE; the connecting line being adjacent to the gap.
12 . The loop antenna according to claim 11 , wherein the first eCCE comprises a first portion and a second portion delimited by a joint of the first connecting line and the first eCCE;
the loop antenna further comprising a second connecting line that electrically connects the loop portion and the second eCCE; the second eCCE comprising a first portion and a second portion delimited by a joint of the second connecting line and a second eCCE; the first portions of the first eCCE and the second eCCE having different lengths in their circumferential directions;; the second portions of the first eCCE and the second eCCE having different lengths in their circumferential directions.
13 . The loop antenna according to claim 1 , wherein one of the two ends of the loop portion is a free end that is not connected to the first eCCE.