| 摘要 |
A monopole-type antenna for multi- or wide-band use to transmit or receive radio frequency electromagnetic energy. A feed point, provides energy into the antenna or receives energy from the antenna. A driven radiating section includes a first top-loading element and a feed conductor that electrically connects the feed point linearly to the first top-loading element, yet with the driven radiating section not electrically connected to a grounding surface. A parasitic radiating section includes a second top-loading element and a bridge conductor that electrically connects the second top-loading element linearly to the grounding surface When energy is then provided at the feed point and conducted to the driven radiating section, it produces a first resonance mode, coupling at least some of the energy into and exciting the parasitic radiating section to produce a second resonance mode.
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