Patent ID: 7541992

Claim:
A mobile radio communication device comprising: first and second antennas having different communication frequencies, the first and second antennas each having a main antenna body and a feed end; a circuit board on which a plurality of electronic elements are mounted; an inner casing housing the circuit board, the inner casing having an outer circumference surface on which an antenna aperture is formed, an outer casing covering the inner casing; and a water-proof packing accommodated in and sealing inside the antenna aperture to prevent water from entering into the inner casing through the antenna aperture; wherein the first and second antennas are each partially embedded in the water-proof packing, the main antenna bodies of the first and second antennas being exposed to an outside of the inner casing through the water-proof packing and disposed along the outer circumference surface, and the feed ends of the first and second antennas being exposed to an inside of the inner casing through the water-proof packing and connected to the circuit board housed inside the inner casing; and wherein the main antenna body of the first antenna is disposed in a first direction along a radial direction of the outer circumference surface of the inner casing, and the main antenna body of the second antenna is disposed in a second direction, which is different from the first direction along the radial direction of the outer circumference surface of the inner casing.