Patent attributes
A printed circuit tri-band antenna has a feedline region and a radiating structure region which provides RF emissions in a lowband (LB) RF frequency, a lower highband (HB-L) frequency, and a upper highband (HB-U) frequency. The feedline region is formed of conductors on an upper plane, the conductors including a feedline which is edge coupled to left and right ground structures. The feedline couples directly to a HB-U radiating structure, and includes a stub. The HB-U structure and stub also provide edge coupling through a gap for coupling RF into a combined HB-L and LB radiation structure, which provides frequency-dependent paths for radiating RF energy at the HB-L and LB frequencies. The antenna is preferably used with 2.35 Ghz LB, 5.07 GHz HB-L, and 5.57 Ghz HB-H.
