IMPROVED RADIATION DIVERSITY ANTENNA

摘要

PROBLEM TO BE SOLVED: To provide a diversity antenna which ensures sufficient diversity while making dimension of the antenna small. SOLUTION: The radiation diversity antenna comprises a radiating element of a slot line type connected electromagnetically to a feeding line. The radiating element has a tree structure. Each the radiating element has an identical length of kλs/2 when k is an identical or different integer for one element and the following element, andλs is a guided wavwlength induced in a slot line which constitute the radiating element. At least one of radiating elements has a switching means arranged in a slot line which constitutes the radiating element to control coupling between the radiating element and the feeding line according to a command. This radiation diversity antenna is mainly applied to wireless transmission. COPYRIGHT: (C)2004,JPO&NCIPI