Patent ID: 6803881
Filing Date: 2004-10-12
Classification: H01Q

Abstract:
An antenna unit for transmitting and receiving a predetermined radio wave, comprising:an antenna body having a dielectric substrate, a fed radiation electrode with a first open end and a first grounding end, the fed radiation electrode being mounted on the dielectric substrate, and a non-fed radiation electrode with a second open end and a second grounding end, the non-fed radiation electrode being provided near the fed radiation electrode and mounted on the dielectric substrate; and a substrate having the antenna body mounted thereon, the substrate having a ground electrode thereon, a ground-electrodeless portion extending from at least one portion of an antenna-body mounting area so as to extend off of and away from the antenna-body mounting area, and at least one grounding line disposed on a predetermined area of the ground-electrodeless portion, the predetermined area being outside the antenna-body mounting area; wherein the fed radiation electrode is fed a signal transmitted from a signal feeder and at least one of the first and second grounding ends is connected to the ground electrode via the grounding line.