Patent ID: 6097342
Filing Date: 2000-08-01
Classification: H01Q

Abstract:
An antenna device for a portable radio communication device operating within UHF or adjacent frequency ranges, comprising:an antenna housing having mounting means for mounting on a radio communication device,a radiating first element carried by the antenna housing,the first element having a first feed point at which it exhibits a first impedance Z1,an impedance matching means being carried by the antenna housing adjacent to the first feed point and having first and second coupling means exhibiting essentially the first impedance Z1 and a second impedance Z2, respectively,the first coupling means being connected to the first feed point,the second coupling means including first and second conductive members being connectable to the radio communication device,the impedance matching means including at least one reactive element connected between the first and second coupling means,the impedance matching means including a dielectric substrate carried by the antenna housing, and being integrated in the antenna housing,the substrate carrying the reactive element(s) and a conductor pattern, which interconnects the reactive element(s) and the first and second coupling means.