Abstract: An object of the present invention is to further miniaturize a module substrate with an antenna while maintaining desirable characteristics. A module substrate with an antenna according to the invention has a substrate body and first and second radiation conductors and provided on one surface of the substrate body and being symmetrical. The first and the second radiation conductors asymmetrical with respect to a first line B that passes a power-supplying the first radiation conductor and a power-supplying point of the second radiation conductor. Therefore, the wavelength of radio waves radiated from the current flowing in one direction as viewed from the first line B is different from that of radio waves radiated from the current flowing in the other direction as viewed from the first line B. As a result, the substrate body can be miniaturized while securing a broader band than the conventional module substrates.

Abstract: An object of the present invention is to further miniaturize a module substrate with an antenna while maintaining desirable characteristics. A module substrate 100 with an antenna according to the invention has a substrate body 110 and first and second radiation conductors 121 and 122 provided on one surface 111 of the substrate body 110 and being symmetrical. The first and the second radiation conductors 121 and 122 are asymmetrical with respect to a first line B that passes a power-supplying point 121b of the first radiation conductor and a power-supplying point 122b of the second radiation conductor. Therefore, the wavelength of radio waves radiated from the current flowing in one direction as viewed from the first line B is different from that of radio waves radiated from the current flowing in the other direction as viewed from the first line B. As a result, the substrate body 110 can be miniaturized while securing a broader band than the conventional module substrates.

Abstract: A chip antenna has pattern antennas A1, A2? which are formed on a plurality of layers of a base member of a stacked structure and of which at least parts of their patterns are not overlapping with each other in the stacked direction, and a feeding terminal 12 which is formed on a surface of the base member and which is connected to the pattern antennas A1, A2?. By deleting an overlap with each other in the stacked direction between their patterns of pattern antennas A1, A2?, one pattern antenna can be adjusted to have an optimized resonant frequency without influencing frequency characteristics of another pattern antenna. The pattern antenna A2? has a first area of a rectangular shape and a second area elongating continuously from the first area.

Abstract: A surface mounted antenna according to the present invention includes a dielectric block 11, a radiating electrode 12 formed on one of a main surface 11a of the dielectric block 11, a ground electrode 13 formed on the other main surface 11b of the dielectric block 11, and a feed electrode 14 formed on a side surface 11c of the dielectric block 11 and electromagnetically coupled with the radiating electrode 12. In the present invention, since the feed electrode 14 is formed on the side surface 11c of the dielectric block 11, the size of the main surface 11a of the dielectric block 11 can be made smaller than that of the conventional dielectric block. Accordingly, since further miniaturization can be realized, when the dielectric block 11 is mounted on a printed circuit board or the like, the mounting area can be reduced as compared with the conventional dielectric block.

Abstract: A chip antenna has pattern antennas A1, A2′ which are formed on a plurality of layers of a base member of a stacked structure and of which at least parts of their patterns are not overlapping with each other in the stacked direction, and a feeding terminal 12 which is formed on a surface of the base member and which is connected to the pattern antennas A1, A2′. By deleting an overlap with each other in the stacked direction between their patterns of pattern antennas A1, A2′, one pattern antenna can be adjusted to have an optimized resonant frequency without influencing frequency characteristics of another pattern antenna. The pattern antenna A2′ has a first area of a rectangular shape and a second area elongating continuously from the first area.