Provided is a wireless communication device whose impedance can be matched with an arbitrary load impedance and which can be broadened in operating frequency band even when choosing an input impedance of an IC chip freely is not possible. The wireless communication device includes: a first conductor (ground conductor 1); a second conductor (2) which is disposed substantially parallel to the first conductor (1); a hole (slot 3) which is formed in the second conductor (2) ; capacitive coupling means (4a, 4b) which are disposed adjacent to the hole; and a communication circuit (IC chip 5) which has at least one of a radio wave transmitting function and a radio wave receiving function. The communication circuit is connected through the capacitive coupling means (4a, 4b) to two sites on the second conductor that are near borders between the second conductor (2) and the hole.
