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AssigneeChi Mei Communication Systems, Inc.
InventorHSIEN-CHANG LIN
Estimating the term…
An exemplary dual-band antenna includes a first antenna unit and a second antenna unit for receiving /sending radio frequency signals corresponding generating a low resonant frequency and a high resonant frequency. The first antenna unit is perpendicularly connected to the second antenna unit. The second antenna unit includes a feed portion, two slots, two gaps and two grounding sheets. The feed portion is electrically connected to the first antenna unit and is used to receive radio frequency signals. The slots are adjacent to one side of the first antenna unit and are defined at the both sides of the feed portion, and the slots are connected with the feed portion and used to radiate radio frequency signals. The gaps extend away from a position of the first antenna unit and are defined at the both sides of the feed portion, and each gap communicates with corresponding slot. The grounding sheets are symmetrically positioned at both sides of the feed portion.
1 A dual-band antenna for a portable wireless communication device, comprising:
The dual-band antenna as claimed in claim 1, wherein the first antenna unit includes a first radiation member and a second radiation member, both the first radiation member and the second radiation member are L-shaped plates and symmetric on the feed portion, and the first radiation member and the second radiation member are electrically connected with the feed portion and coplanar with the second antenna unit.
The dual-band antenna as claimed in claim 1, wherein the grounding sheets have rectangular sheet-shapes and the slots have rectangular shapes, and the grounding sheets and the feed portion are spaced by the gaps.
The dual-band antenna as claimed in claim 1, wherein the first antenna unit and the second antenna unit share the grounding sheets and the feed portion cooperatively.
The dual-band antenna as claimed in claim 1, wherein the semi-perimeter of the first radiation member or the second radiation member is about equal to a quarter of the low frequency wavelength to determine one resonant frequency in a low band, and the slots generates another resonant frequency in a high band, and length of the slot determines the resonant frequency working in a high band.
A portable wireless communication device comprising:
Dependencies are inferred from the claim text.