Multi-Band or Wide-Band Antenna
First Claim
1. A monopole-type antenna for multi- or wide-band use to transmit or receive radio frequency electromagnetic energy, comprising:
- a feed point, to receive the energy into the antenna or to provide the energy from the antenna;
a driven radiating section including a first top-loading element and a feed conductor that electrically connects said feed point linearly to said first top-loading element, wherein said driven radiating section is not electrically connected to a grounding surface; and
a parasitic radiating section including a second top-loading element and a bridge conductor that electrically connects said second top-loading element linearly to said grounding surface; and
wherein when the energy is provided at said feed point and conducted to said driven radiating section it produces a first resonance mode, coupling at least some of the energy into and exciting said parasitic radiating section to produce a second resonance mode.
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Abstract
A monopole-type antenna (10) for multi- or wide-band use to transmit or receive radio frequency electromagnetic energy. A feed point (12) provides energy into the antenna or receives energy from the antenna. A driven radiating section (16) includes a first top-loading element (22) and a feed conductor (20) 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 (14). A parasitic radiating section (18) includes a second top-loading element (26) and a bridge conductor (24) 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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Citations
14 Claims
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1. A monopole-type antenna for multi- or wide-band use to transmit or receive radio frequency electromagnetic energy, comprising:
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a feed point, to receive the energy into the antenna or to provide the energy from the antenna; a driven radiating section including a first top-loading element and a feed conductor that electrically connects said feed point linearly to said first top-loading element, wherein said driven radiating section is not electrically connected to a grounding surface; and a parasitic radiating section including a second top-loading element and a bridge conductor that electrically connects said second top-loading element linearly to said grounding surface; and wherein when the energy is provided at said feed point and conducted to said driven radiating section it produces a first resonance mode, coupling at least some of the energy into and exciting said parasitic radiating section to produce a second resonance mode. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A monopole-type antenna for multi- or wide-band use to transmit or receive radio frequency electromagnetic energy, comprising:
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feed point means for receiving the energy into the antenna or to provide the energy from the antenna; driven radiating means including; a first top-loading means for producing a first resonance mode, and feed conducting means for electrically connecting said feed point means linearly to said first top-loading means, wherein said driven radiating means is not electrically connected to a grounding means; and a parasitic radiating means including; second top-loading means for producing a second resonance mode, and bridge conductive means for electrically connecting said second top-loading means linearly to said grounding means; and wherein when the energy is provided at said feed point means and conducted to said driven radiating means for producing said first resonance mode, for coupling at least some of the energy into and for exciting said parasitic radiating means to produce said second resonance mode. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification