A LOOP ANTENNA OF WIDE BANDWIDTH FOR RF

摘要

PURPOSE: A broadband RF loop antenna is provided to improve space availability by rearranging a soldering region of a sub loop antenna and a main loop antenna. CONSTITUTION: A first loop antenna(31) resonates with a first frequency. A second loop antenna(32) resonates with a second frequency. The first loop antenna includes a pair of first terminals(311) which input and output an RF signal to a pattern formed inside the upper side of the substrate. The second loop antenna includes a pair of second terminals(321) which outputs the RF signal from a pattern formed outside the upper side of the substrate. A distance between loops is a distance from the outermost pattern of the first loop antenna and the innermost pattern of the second loop antenna and is 0.12-2.05 mm.