An antenna (40, 400, 800) for a cylindrical body (53, 600, 700), comprising: a flexible substrate configured to be coupled to a cylindrical body that has a long axis; an antenna comprising at least one antenna trace with a first terminal and a second terminal coupled to the flexible substrate; and an integrated circuit electrically coupled to the first terminal and the second terminal; characterised in that the antenna is a two symmetrical loop omni-directional antenna having two rectangular loops substantially symmetrical with respect to each other, wherein one of the two loops includes one or more turns of the antenna trace, extending in a counterclockwise direction from the first terminal, and the other of the two loops includes one or more turns of the antenna trace, extending in a clockwise direction from the second terminal, wherein the one or more turns of each loop are configured to form: circular sections of the antenna trace along a top section and a bottom section of the cylindrical body; and long axis sections of the antenna trace along the long axis of the cylindrical body, wherein the circular sections of the antenna trace of each loop connect to each other along the top section or bottom section to establish an electrical connection between the two loops, and wherein said two loops are disposed at about 180 degrees apart from each other on opposite sides of the cylindrical body, when the two symmetrical loop omni-directional antenna is coupled to the cylindrical body, such that waveforms carried by said circular sections of the antenna trace are in-phase with one another, and waveforms carried by said long axis sections of the antenna trace along the long axis are out-of-phase by about 180 degrees. a flexible substrate configured to be coupled to a cylindrical body that has a long axis; an antenna comprising at least one antenna trace with a first terminal and a second terminal coupled to the flexible substrate; and an integrated circuit electrically coupled to the first terminal and the second terminal; characterised in that the antenna is a two symmetrical loop omni-directional antenna having two rectangular loops substantially symmetrical with respect to each other, wherein one of the two loops includes one or more turns of the antenna trace, extending in a counterclockwise direction from the first terminal, and the other of the two loops includes one or more turns of the antenna trace, extending in a clockwise direction from the second terminal, wherein the one or more turns of each loop are configured to form: circular sections of the antenna trace along a top section and a bottom section of the cylindrical body; and long axis sections of the antenna trace along the long axis of the cylindrical body, wherein the circular sections of the antenna trace of each loop connect to each other along the top section or bottom section to establish an electrical connection between the two loops, and wherein said two loops are disposed at about 180 degrees apart from each other on opposite sides of the cylindrical body, when the two symmetrical loop omni-directional antenna is coupled to the cylindrical body, such that waveforms carried by said circular sections of the antenna trace are in-phase with one another, and waveforms carried by said long axis sections of the antenna trace along the long axis are out-of-phase by about 180 degrees.