Antenna system using variable phase pattern synthesis

Claim 2

An antenna system for radiating wave energy in a desired radiation pattern comprising: an aperture comprising an array of antenna elements for radiating wave energy patterns in response to wave energy excitations; means for supplying wave energy to said elements with predetermined relative phases and amplitudes to develop a composite wave energy excitation on said aperture, the relative phase and amplitude of the wave energy supplied to each of said elements comprising the vector sum of a plurality of component aperture excitations, measured at the location of said element on said aperture, including a reference excitation and other component excitations having both positive and negative phase variation on said aperture with respect to said reference excitation, said component excitations with positive phase variation having with respect to said reference excitation an average phase displacement which is a first monotonic function of said phase variation, and said component excitations with negative phase variation having, with respect to said reference excitation, an average phase displacement which is a second monotonic function of said phase variation, all excitations having the same sense of average phase displacement, thereby resulting in a set of element excitations without substantial amplitude reinforcement of said component excitations at any selected one of said antenna elements.

Claim 3

An antenna system for radiating wave energy in a desired radiation pattern comprising: an aperture compRising a linear array of antenna elements for radiating wave energy patterns in response to wave energy excitations; means for supplying wave energy to said elements with predetermined relative phases and amplitudes to develop a composite wave energy excitation on said aperture, the relative phase and amplitude of the wave energy supplied to each of said elements comprising the vector sum of a plurality of component aperture excitations, measured at the location of said element on said aperture, including a reference excitation and other component excitations having both positive and negative phase variation on said aperture with respect to said reference excitation, said component excitations with positive phase variation having with respect to said reference excitation an average phase displacement which is a first monotonic function of said phase variation, and said component excitations with negative phase variation having, with respect to said reference excitation, an average phase displacement which is a second monotonic function of said phase variation, all excitations having the same sense of average phase displacement, thereby resulting in a set of element excitations without substantial amplitude reinforcement of said component excitations at any selected one of said antenna elements.

Claim 4

An antenna system for radiating wave energy in a desired radiation pattern comprising: an aperture compRising a linear array of antenna elements for radiating wave energy patterns in response to wave energy excitations; means for supplying wave energy to said elements with predetermined relative phases and amplitudes to develop a composite wave energy excitation on said aperture, the relative phase and amplitude of the wave energy supplied to each of said elements comprising the vector sum of a plurality of component aperture excitations, measured at the location of said element on said aperture, including a reference excitation and other component excitations having both positive and negative phase variation on said aperture with respect to said reference excitation, said component excitations with positive phase variation having with respect to said reference excitation an average phase displacement which is a first monotonic function of said phase variation, and said component excitations with negative phase variation having, with respect to said reference excitation, an average phase displacement which is a second monotonic function of said phase variation, all excitations having the same sense of average phase displacement, thereby resulting in a set of element excitations without substantial amplitude reinforcement of said component excitations at any selected one of said antenna elements.

Claim 5

An antenna system for radiating wave energy in a desired radiation pattern comprising: an aperture comprising an array of antenna elements for radiating wave energy patterns in response to wave energy excitations; means for supplying wave energy to said elements with predetermined relative phases and amplitudes to develop a composite wave energy excitation on said aperture, the relative phase and amplitude of the wave energy supplied to each of said elements comprising the vector sum of a plurality of uniform amplitude, orthogonal-phase component aperture excitations, measured at the location of said elements on said aperture, including a reference excitation and other component excitations having both positive and negative phase variation on said aperture with respect to said reference excitation, said component excitations with positive phase variation having with respect to said reference excitation an average phase displacement which is a first monotonic function of said phase variation, and said component excitations with negative phase variation having, with respect to said reference excitation, an average phase displacement which is a second monotonic function of said phase variation, all excitations having the same sense of average phase displacement, thereby resulting in a set of element excitations without substantial amplitude reinforcement of said component excitations at any selected one of said antenna elements.

Claim 6

An antenna system for radiating wave energy in a desired radiation pattern comprising: an aperture comprising an array of antenna elements for radiating wave energy patterns in response to wave energy excitations; means for supplying wave energy to said elements with predetermined relative phases and amplitudes to develop a composite wave energy excitation on said aperture, the relative phase and amplitude of the wave energy supplied to each of said elements comprising the vector sum of a plurality of uniform amplitude, orthogonal-phase component aperture excitations, measured at the location of said elements on said aperture, including a reference excitation and other component excitations having both positive and negative phase variation on said aperture with respect to said reference excitation, said component excitations with positive phase variation having with respect to said reference excitation an average phase displacement which is a first monotonic function of said phase variation, and said component excitations with negative phase variation having, with respect to said reference excitation, an average phase displacement which is a second monotonic function of said phase variation, all excitations having the same sense of average phase displacement, thereby resulting in a set of element excitations without substantial amplitude reinforcement of said component excitations at any selected one of said antenna elements.

Claim 7

An antenna system for radiating wave energy signals in a desired radiation pattern, comprising a waveguide having an aperture comprising a linear array of slots for radiating wave energy patterns in response to wave energy excitations and having selected slot orientations and locations which cause wave energy supplied to one end of said waveguide to develop a composite wave energy excitation on said aperture wherein the wave energy supplied to each of said slots has a relative phase and amplitude comprising the vector sum of a plurality of component aperture excitations, measured at the location of said slot in said array, including a reference component excitation and other component excitations having both positive and negative phase variation along said linear array with respect to said reference excitation, said component excitations with positive phase variation having with respect to said reference excitation an average phase displacement which is a first monotonic function of said phase variation, and said component excitations with negative phase variation having with respect to said reference excitation an average phase displacement which is a second monotonic function of said phase variation, all excitations having the same sense of Average phase displacement, thereby resulting in a composite wave energy excitation without substantial amplitude reinforcement of said component excitations at any of said slots in said waveguide.

Claim 8

An antenna system for radiating wave energy signals in a desired radiation pattern, comprising a waveguide having an aperture comprising a linear array of slots for radiating wave energy patterns in response to wave energy excitations and having selected slot orientations and locations which cause wave energy supplied to one end of said waveguide to develop a composite wave energy excitation on said aperture wherein the wave energy supplied to each of said slots has a relative phase and amplitude comprising the vector sum of a plurality of component aperture excitations, measured at the location of said slot in said array, including a reference component excitation and other component excitations having both positive and negative phase variation along said linear array with respect to said reference excitation, said component excitations with positive phase variation having with respect to said reference excitation an average phase displacement which is a first monotonic function of said phase variation, and said component excitations with negative phase variation having with respect to said reference excitation an average phase displacement which is a second monotonic function of said phase variation, all excitations having the same sense of Average phase displacement, thereby resulting in a composite wave energy excitation without substantial amplitude reinforcement of said component excitations at any of said slots in said waveguide.

Claim 9

An antenna system for radiating wave energy signals in a desired radiation pattern, comprising a waveguide having an aperture comprising a linear array of slots formed into one of the narrow walls of said waveguide for radiating wave energy patterns in response to wave energy excitation and having selected slot orientations and locations which cause wave energy supplied to one end of said waveguide to develop a composite wave energy excitation on said aperture wherein the wave energy supplied each of said slots has a relative phase and amplitude comprising the vector sum of a plurality of component aperture excitations, measured at the location of said slot in said array, including a reference component excitation and other component excitations having both positive and negative phase variations along said linear array with respect to said reference excitation, said component excitations with positive phase variation having with respect to said reference excitation an average phase displacement which is a first monotonic function of said phase variation, and said component excitations with negative phase variation having with respect to said reference excitation an average phase displacement which is a second monotonic function of said phase variation, all excitations having the same sense of average phase displacement, thereby resulting in a composite wave energy excitation without substantial amplitude reinforcement of said component excitations at any of said slots in said waveguide.

Claim 10

An antenna system for radiating wave energy signals in a desired radiation pattern, comprising a waveguide having an aperture comprising a linear array of slots formed into one of the narrow walls of said waveguide for radiating wave energy patterns in response to wave energy excitation and having selected slot orientations and locations which cause wave energy supplied to one end of said waveguide to develop a composite wave energy excitation on said aperture wherein the wave energy supplied each of said slots has a relative phase and amplitude comprising the vector sum of a plurality of component aperture excitations, measured at the location of said slot in said array, including a reference component excitation and other component excitations having both positive and negative phase variations along said linear array with respect to said reference excitation, said component excitations with positive phase variation having with respect to said reference excitation an average phase displacement which is a first monotonic function of said phase variation, and said component excitations with negative phase variation having with respect to said reference excitation an average phase displacement which is a second monotonic function of said phase variation, all excitations having the same sense of average phase displacement, thereby resulting in a composite wave energy excitation without substantial amplitude reinforcement of said component excitations at any of said slots in said waveguide.

Claim 11

An antenna system for radiating wave energy signals in a desired radiation pattern, comprising a waveguide having an aperature comprising a linear array of slots for radiating wave energy patterns in response to wave energy excitations and having selected slot orientations and locations which cause wave energy supplied to one end of said waveguide to develop a composite wave energy excitation on said aperature wherein the wave energy supplied each of said slots has a relative phase and amplitude comprising the vector sum of a plurality of uniform amplitude, orthogonalphase component aperature excitations, measured at the location of said slot in said array, including a reference component excitation and other component excitations having both positive and negative phase variation along said linear array with respect to said reference excitation, said component excitations with positive phase variation having with respect to said reference excitation an average phase displacement which is a first monotonic function of said phase variation, and said component excitations with negative phase variation having with respect to said reference excitation an average phase displacement which is a second monotonic function of said phase variation, all excitations having the same sense of average phase displacement, thereby resulting in a composite wave energy excitation without substantial amplitude reinforcement of said component excitations at any of said slots in said waveguide.

Claim 12

An antenna system for radiating wave energy signals in a desired radiation pattern, comprising a waveguide having an aperature comprising a linear array of slots for radiating wave energy patterns in response to wave energy excitations and having selected slot orientations and locations which cause wave energy supplied to one end of said waveguide to develop a composite wave energy excitation on said aperature wherein the wave energy supplied each of said slots has a relative phase and amplitude comprising the vector sum of a plurality of uniform amplitude, orthogonalphase component aperature excitations, measured at the location of said slot in said array, including a reference component excitation and other component excitations having both positive and negative phase variation along said linear array with respect to said reference excitation, said component excitations with positive phase variation having with respect to said reference excitation an average phase displacement which is a first monotonic function of said phase variation, and said component excitations with negative phase variation having with respect to said reference excitation an average phase displacement which is a second monotonic function of said phase variation, all excitations having the same sense of average phase displacement, thereby resulting in a composite wave energy excitation without substantial amplitude reinforcement of said component excitations at any of said slots in said waveguide.

Claim 13

An antenna system for radiating wave energy in a desired radiation pattern, comprising a rectangular waveguide, having an aperture comprising a linear array of slots for radiating wave energy patterns in response to wave energy excitations, said slots being formed into one of the narrow walls of said waveguide and having selected slot orientations and locations which cause wave energy supplied to one end of said waveguide to develop a composite wave energy excitation on said aperture wherein the wave energy supplied to each of said slots has a relative phase and amplitude comprising the vector sum of a plurality of uniform-amplitude, orthogonal-phase component aperture excitations, if measured at the location of said slot in said array, including a reference component excitation and other component excitations havIng both positive and negative phase variation along said linear array with respect to said reference excitation, said component excitations with positive phase variation having with respect to said reference excitation an average phase displacement which is a first monotonic function of said phase variation, and said component excitations with negative phase variation having with respect to said reference excitation an average phase displacement which is a second monotonic function of said phase variation, all excitations having the same sense of average phase displacement; thereby resulting in a composite wave energy excitation without substantial amplitude reinforcement of said component excitations at any of said slots in said waveguide.

Claim 14

An antenna system for radiating wave energy in a desired radiation pattern, comprising a rectangular waveguide, having an aperture comprising a linear array of slots for radiating wave energy patterns in response to wave energy excitations, said slots being formed into one of the narrow walls of said waveguide and having selected slot orientations and locations which cause wave energy supplied to one end of said waveguide to develop a composite wave energy excitation on said aperture wherein the wave energy supplied to each of said slots has a relative phase and amplitude comprising the vector sum of a plurality of uniform-amplitude, orthogonal-phase component aperture excitations, if measured at the location of said slot in said array, including a reference component excitation and other component excitations havIng both positive and negative phase variation along said linear array with respect to said reference excitation, said component excitations with positive phase variation having with respect to said reference excitation an average phase displacement which is a first monotonic function of said phase variation, and said component excitations with negative phase variation having with respect to said reference excitation an average phase displacement which is a second monotonic function of said phase variation, all excitations having the same sense of average phase displacement; thereby resulting in a composite wave energy excitation without substantial amplitude reinforcement of said component excitations at any of said slots in said waveguide.