Gap-mode waveguide
OwnerKirk S. Giboneyinventor
Life of this patent
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Abstract
In a gap-mode waveguide embodiment, an interior gap in a tubular waveguide principally condenses a dominant gap mode near the interior gap, and an absorber dissipates electromagnetic energy away from the gap mode. In this manner, the gap mode may dissipate relatively little power in the absorber compared to other modes and propagate with lesser attenuation than all other modes. A gap mode launched into a gap-mode waveguide may provide for low-loss, low-dispersion propagation of signals over a bandwidth including a multimode range of the waveguide. Gap-mode waveguide embodiments of various forms may be used to build guided-wave circuits covering broad bandwidths extending to terahertz frequencies.
Claims35
A conductive tubular electromagnetic waveguide comprising:
- an interior gap, and
- an absorber configured in such a way that a gap mode propagates with lesser attenuation than do all other propagating modes at a frequency greater than one-and-one-half times the multimode cutoff frequency.
A conductive tubular electromagnetic waveguide comprising:
- a conductor wall;
- an interior gap between proximate interior surface portions of said conductor wall;
- and
- an absorber configured in such a way that a gap mode propagates with lesser attenuation than do all other propagating modes at a frequency greater than two times the multimode cutoff frequency.
A ridge waveguide comprising an absorber configured in such a way that a dominant mode propagates with lesser attenuation than do all other propagating modes at a frequency greater than two times the multimode cutoff frequency.
A method for propagating a dominant mode in a conductive tubular electromagnetic waveguide, the method comprising:
- condensing a gap mode, and
- absorbing electromagnetic energy away from said gap mode in such a way that said gap mode propagates with lesser attenuation than do all other propagating modes at a frequency greater than two times the multimode cutoff frequency.
A method for propagating a dominant mode in a ridge waveguide, the method comprising absorbing electromagnetic energy away from said dominant mode in such a way that said dominant mode propagates with lesser attenuation than do all other propagating modes at a frequency greater than two times the multimode cutoff frequency.
A method for propagating a dominant mode in a lossy conductive tubular electromagnetic waveguide, the method comprising:
- condensing a gap mode in such a way that said gap mode propagates with lesser attenuation than do all other propagating modes at a frequency greater than two times the multimode cutoff frequency.
Dependencies are inferred from the claim text.