Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
First Claim
1. An antenna system comprising:
- an antenna;
a transmission medium that facilitates wireless network connectivity via the antenna, wherein the transmission medium comprises a dielectric material having a largest cross sectional dimension;
a communications interface that receives a first communication signal that includes first data;
a transceiver, coupled to the communications interface, that generates a first electromagnetic wave based on the first communication signal to convey the first data, the first electromagnetic wave having at least one carrier frequency; and
a coupler, coupled to the transceiver, that couples the first electromagnetic wave to the transmission medium, wherein the coupling of the first electromagnetic wave to the transmission medium forms a second electromagnetic wave that is guided to propagate along the dielectric material via at least one guided-wave mode that includes a non-fundamental mode, wherein the non-fundamental mode has a cutoff frequency, and wherein the at least one carrier frequency is above the cutoff frequency and a majority of an electric field strength of the second electromagnetic wave is concentrated within a distance from the dielectric material that is less than half the largest cross sectional dimension.
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Accused Products
Abstract
Aspects of the subject disclosure may include, for example, a transmission device that includes a transmitter that generates a first electromagnetic wave to convey data. A coupler couples the first electromagnetic wave to a single wire transmission medium having an outer surface, to forming a second electromagnetic wave that is guided to propagate along the outer surface of the single wire transmission medium via at least one guided wave mode that includes an asymmetric or non-fundamental mode having a lower cutoff frequency. A carrier frequency of the second electromagnetic wave is selected to be within a limited range of the lower cutoff frequency, so that a majority of the electric field is concentrated within a distance from the outer surface that is less than half the largest cross sectional dimension of the single wire transmission medium, and/or to reduce propagation loss. Other embodiments are disclosed.
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Citations
20 Claims
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1. An antenna system comprising:
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an antenna; a transmission medium that facilitates wireless network connectivity via the antenna, wherein the transmission medium comprises a dielectric material having a largest cross sectional dimension; a communications interface that receives a first communication signal that includes first data; a transceiver, coupled to the communications interface, that generates a first electromagnetic wave based on the first communication signal to convey the first data, the first electromagnetic wave having at least one carrier frequency; and a coupler, coupled to the transceiver, that couples the first electromagnetic wave to the transmission medium, wherein the coupling of the first electromagnetic wave to the transmission medium forms a second electromagnetic wave that is guided to propagate along the dielectric material via at least one guided-wave mode that includes a non-fundamental mode, wherein the non-fundamental mode has a cutoff frequency, and wherein the at least one carrier frequency is above the cutoff frequency and a majority of an electric field strength of the second electromagnetic wave is concentrated within a distance from the dielectric material that is less than half the largest cross sectional dimension. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A transmission device comprising:
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a transmitter that generates a first electromagnetic wave based on a communication signal to convey data, the first electromagnetic wave having at least one carrier frequency; and a coupler, coupled to the transmitter, that couples the first electromagnetic wave to a conductorless transmission medium that facilitates wireless network connectivity via an antenna, wherein the conductorless transmission medium comprises a dielectric material having a diameter, wherein the coupling of the first electromagnetic wave to the conductorless transmission medium forms a second electromagnetic wave that is guided to propagate along the conductorless transmission medium via at least one guided-wave mode that includes an asymmetric mode, wherein the at least one carrier frequency is within a microwave frequency band and wherein the asymmetric mode has a cutoff frequency, and wherein the at least one carrier frequency is above the cutoff frequency and a majority of an electric field strength of the second electromagnetic wave is concentrated within a distance from the dielectric material that is less than half the diameter. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method comprising:
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generating a first electromagnetic wave based on a communication signal to convey data, the first electromagnetic wave having at least one carrier frequency; and coupling, by a coupler, the first electromagnetic wave to a dielectric transmission medium that provides network connectivity via an antenna that radiates free space wireless signals, wherein the dielectric transmission medium has a diameter, wherein the coupling of the first electromagnetic wave to the dielectric transmission medium forms a second electromagnetic wave that is guided to propagate along the dielectric transmission medium via a non-fundamental guided-wave mode, wherein the at least one carrier frequency is within a millimeter-wave frequency band and wherein the at least one carrier frequency is above a cutoff frequency of the non-fundamental guided-wave mode and a majority of an electric field strength of the second electromagnetic wave is concentrated within a distance from the dielectric transmission medium that is less than half the diameter. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification