| 摘要 |
PURPOSE:To provide an antenna for radio base station which obtains various desired directivities and realizes miniaturization of a device, reduction of cost, and reduction of power consumption. CONSTITUTION:Setting parts (tapped holes 2) are longitudinally and transversely arranged at intervals of about 1/4 wavelength on a base plate 33 having a limited length, and a radiation element 1 is set to some setting part (tapped hole 2) and bar-shaped non-feed reflectors 9 or waveguides 10 are set around it to obtain a desired directivity. Thus, the service area of a mobile radio base or the like in a small cell system is extended. |
