A mobile communication device comprising: a first body; a second body slidably coupled to the first body; and an antenna device comprising: a plurality of boards (300, 400) each being made of a rigid or flexible material and each having a respective connector (310, 410); a flexible connector body; and an antenna disposed on the flexible connector body, the antenna following a path (120, 121, 122, 125) on the flexible connector body from one end of the flexible connector body to an opposite end of the flexible connector body, and the antenna having opposite ends thereof protruding from said opposite ends of the flexible connector body; wherein the plurality of boards (300, 400) comprises a first board disposed inside the first body and a second board disposed inside the second body; wherein the antenna is electrically connected, at opposite ends thereof, to the respective connectors (310, 410) of the first board and the second board; wherein each of the first board and the second board comprises an antenna portion disposed on the respective first and second board (300, 400) and following a respective further path (320, 420), an end of which is connected to the respective connector (310, 410) of the first and second boards (300, 400); wherein each end of the antenna protruding from the flexible connector body is connected to the respective connectors (310, 410) of the first and second boards (300, 400) such that the antenna is connected to the antenna portions; and wherein the path (120, 121, 122, 125) and the further path comprise a plurality of path portions extending in a longitudinal direction along the flexible connector body and the first and second boards (300, 400) respectively, said path and further paths of the first and second boards are configured to form the radiating portion of an antenna. a first body; a second body slidably coupled to the first body; and an antenna device comprising: a plurality of boards (300, 400) each being made of a rigid or flexible material and each having a respective connector (310, 410); a flexible connector body; and an antenna disposed on the flexible connector body, the antenna following a path (120, 121, 122, 125) on the flexible connector body from one end of the flexible connector body to an opposite end of the flexible connector body, and the antenna having opposite ends thereof protruding from said opposite ends of the flexible connector body; wherein the plurality of boards (300, 400) comprises a first board disposed inside the first body and a second board disposed inside the second body; wherein the antenna is electrically connected, at opposite ends thereof, to the respective connectors (310, 410) of the first board and the second board; wherein each of the first board and the second board comprises an antenna portion disposed on the respective first and second board (300, 400) and following a respective further path (320, 420), an end of which is connected to the respective connector (310, 410) of the first and second boards (300, 400); wherein each end of the antenna protruding from the flexible connector body is connected to the respective connectors (310, 410) of the first and second boards (300, 400) such that the antenna is connected to the antenna portions; and wherein the path (120, 121, 122, 125) and the further path comprise a plurality of path portions extending in a longitudinal direction along the flexible connector body and the first and second boards (300, 400) respectively, said path and further paths of the first and second boards are configured to form the radiating portion of an antenna. a plurality of boards (300, 400) each being made of a rigid or flexible material and each having a respective connector (310, 410); a flexible connector body; and an antenna disposed on the flexible connector body, the antenna following a path (120, 121, 122, 125) on the flexible connector body from one end of the flexible connector body to an opposite end of the flexible connector body, and the antenna having opposite ends thereof protruding from said opposite ends of the flexible connector body; wherein the plurality of boards (300, 400) comprises a first board disposed inside the first body and a second board disposed inside the second body; wherein the antenna is electrically connected, at opposite ends thereof, to the respective connectors (310, 410) of the first board and the second board; wherein each of the first board and the second board comprises an antenna portion disposed on the respective first and second board (300, 400) and following a respective further path (320, 420), an end of which is connected to the respective connector (310, 410) of the first and second boards (300, 400); wherein each end of the antenna protruding from the flexible connector body is connected to the respective connectors (310, 410) of the first and second boards (300, 400) such that the antenna is connected to the antenna portions; and wherein the path (120, 121, 122, 125) and the further path comprise a plurality of path portions extending in a longitudinal direction along the flexible connector body and the first and second boards (300, 400) respectively, said path and further paths of the first and second boards are configured to form the radiating portion of an antenna.