ANTENNA
An antenna comprising a substrate ( 12 ) having on a first side a first antenna element ( 16, 32 ) and on a second side a second antenna element ( 18, 34 ) which is of a different length to the first antenna element ( 16,32 ).
1 . An antenna comprising a substrate having on a first side a first antenna element and on a second side a second antenna element which is of a different length to the first antenna element.
2 . An antenna according to claim 1 wherein one of the first and second antenna elements is a meander antenna element.
3 . An antenna according to claim 2 wherein the first and second antenna elements are meander antenna elements.
4 . An antenna according to claim 1 wherein the second side of the substrate is generally opposed to the first side.
5 . An antenna according to claim 3 wherein a path of the second antenna element is different from a path of the first antenna element
6 . An antenna according to claim 5 wherein the path of the second antenna element substantially mirrors the path of the first antenna element.
7 . An antenna according to claim 5 wherein the first and second antenna elements are substantially sinusoidal.
8 . An antenna according to claim 1 wherein the first and second antenna elements are printed antenna elements.
9 . A wireless subsystem module comprising an antenna according to claim 1 .
10 . A wireless subsystem module according to claim 9 wherein the total length of the wireless subsystem module is approximately a quarter of the operating wavelength of the wireless subsystem module.
11 . A device comprising an antenna according to claim 1 .