FILTER BUILT-IN DIELECTRIC ANTENNA, DUPLEXER BUILT-IN DIELECTRIC ANTENNA AND WIRELESS EQUIPMENT

摘要

PURPOSE: A filter built-in dielectric antenna, duplexer built-in dielectric antenna, and wireless equipment is to prevent loss generated when a transmission unit is installed between an antenna and a dielectric filter. CONSTITUTION: A filter built-in dielectric antenna comprises: an antenna part including a dielectric rectangular substrate(1) and a radiation electrode(2) having one short-circuited end and one open end and formed on or inside the dielectric substrate; and a filter part including a first resonant electrode(4a,4b) formed on or inside the dielectric substrate and an external coupling electrode(7) for the resonant electrode. The radiation electrode is coupled with the resonant electrode. A duplexer built-in antenna further comprises a transmission/reception filter including the filter part, a second resonant electrode in output stage of the transmission filter coupled to the antenna part a third resonant electrode in input stage of the reception filter coupled to the antenna. The filter built-in antenna and the duplexer built-in antenna can be used as an RF(Radio frequency) circuit part in a wireless equipment.