A triangular loop antenna mounted adjacent to a lossy Si substrate for millimeter-wave wireless PAN

Millimeter-wave wireless communication is expected to be used for wireless personal area network (WPAN) for which a bit rate of 1Gbps or more is needed. Our goal is the development of an antenna suited to a WPAN terminal. Since a small, low-cost antenna with high radiation efficiency and a high gain in a wide- angle range is required for WPAN, the beam scan becomes unnecessary. In this paper, we propose a novel triangular loop antenna with a simple structure which has a feed point on to a semiconductor substrate.