| 摘要 |
A dual mode, substantially planar antenna utilizes a dipole or monopole structure for receiving and transmitting high-frequency signals. Layers of conductive strips are disposed on opposite sides of an insulating (dielectric) substrate, such as printed circuit board material. First and second antenna elements are connected via an LC trap, the first antenna element corresponding to a first mode and the combined elements corresponding to a second mode. The LC trap is a single component inductor with parasitic capacitance sufficient to implement the LC trap or a set of patterns printed on the substrate. In one embodiment, the LC trap is constructed with only a single via through the substrate. The antenna is ideally suited for combined 5.5 GHz and 2.4 GHz RF operations.
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