Direction finding antenna system

Claim 2

A directional broadbandwidth antenna array comprising: a first spiral-wound antenna component formed of a pair of adjacently disposed spiraled dipole-like conductors; a second flat spiral-wound antenna component formed of a pair of adjacently disposed spiraled dipole-like conductors; and means concentrically mounting said first and said second antenna components within a common plane with said first antenna component surrounded by said second antenna component.

Claim 3

The array of claim 1 further characterized in that the circumference of said first component is at least greater than a single wavelength at a desired lowermost operating frequency and the circumference of said second component is at least greater than two wavelengths at said desired lowermost frequency for causing a radiation band to occur at a mean circumference of one wavelength for said first component and a radiation band for said second component to occur at a mean circumference of two wavelengths, thereby providing a pair of separate signals simultaneously generated by said array.

Claim 4

The array of claim 2 wherein means are provided so that the spiraled conductors of said first component are caused to provide signals out of phase with respect to each other and the spiraled conductors of said second component are caused to provide signals in phase with respect to each other so that a pair of scanning lobes are thus provided.

Claim 5

A passive directional broadbandwidth antenna device comprising in combination: a first flat spiraled antenna component having a pair of spiraled dipole-like conductors adjacently disposed throughout their lengths and terminating within the component; a second flat spiraled antenna component having a pair of spiraled dipole-like conductors adjacently disposed throughout their lengths and terminating within the component so as to provide a vacant cavity-like area near the center portion thereof; means for mounting said first component within said area and concentrically with said second component in a manner so as to dispose the first and second components within a common plane; means for obtaining output signals at the outer ends of each of said conductors; signal processing means for shifting the phase of the output signals of said first component; and means for determining relative direction and angle of displacement of a radiation emitting source with respect to said device by observing and comparing the amplitude and phase of the output signals of said first and second components.

Claim 6

A passive directional broadbandwidth antenna device comprising in combination: a first flat spiraled antenna component having a pair of spiraled dipole-like conductors adjacently disposed throughout their lengths and terminating within the component; a second flat spiraled antenna component having a pair of spiraled dipole-like conductors adjacently disposed throughout their lengths and terminating within the component so as to provide a vacant cavity-like area near the center portion thereof; means for mounting said first component within said area and concentrically with said second component in a manner so as to dispose the first and second components within a common plane; means for obtaining output signals at the outer ends of each of said conductors; signal processing means for shifting the phase of the output signals of said first component; and means for determining relative direction and angle of displacement of a radiation emitting source with respect to said device by observing and comparing the amplitude and phase of the output signals of said first and second components.

Claim 7

A directional broadbandwidth antenna array comprising: a first spiral-wound antenna component formed of a pair of adjacently disposed spiraled dipole-like conductors; a second flat spiral-wound antenna component formed of a pair of adjacently disposed spiraled dipole-like conductors; means concentrically mounting said first and second antenna components in a common plane; and means for causing each of the spiraled conductors of the first component to provide signals from the outer ends thereof out of phase with respect to each other and for causing the spiraled conductors of said second component to provide signals from the outer ends thereof in phase with each other so as to provide separate scanning signals simultaneously received by said array.

Claim 8

A directional broadbandwidth antenna array comprising: a first spiral-wound antenna component formed of a pair of adjacently disposed spiraled dipole-like conductors; a second flat spiral-wound antenna component formed of a pair of adjacently disposed spiraled dipole-like conductors; means concentrically mounting said first and second antenna components in a common plane; and means for causing each of the spiraled conductors of the first component to provide signals from the outer ends thereof out of phase with respect to each other and for causing the spiraled conductors of said second component to provide signals from the outer ends thereof in phase with each other so as to provide separate scanning signals simultaneously received by said array.

Claim 9

A directional broadbandwidth antenna array comprising: a first spiral-wound antenna component formed of a pair of adjacently disposed spiraled dipole-like conductors spiraling out from a center point to a predetermined diameter; a second spiral-wound antenna coMponent formed of a pair of adjacently disposed spiraled dipole-like conductors of greater diameter than said predetermined diameter and encompassing said first antenna component; and means concentrically mounting said components in a common plane.

Claim 10

A directional broadbandwidth antenna array comprising: a first spiral-wound antenna component formed of a pair of adjacently disposed spiraled dipole-like conductors spiraling out from a center point to a predetermined diameter; a second spiral-wound antenna coMponent formed of a pair of adjacently disposed spiraled dipole-like conductors of greater diameter than said predetermined diameter and encompassing said first antenna component; and means concentrically mounting said components in a common plane.

Claim 11

The array of claim 6 wherein: said predetermined diameter is such as to provide said first component with a circumference which is at least greater than a single wavelength at a desired operating frequency; and said greater diameter is such as to provide said second component with a circumference which is at least greater than two wavelengths at said desired operating frequency.

Claim 12

The array of claim 7, further characterized in having means for causing the conductors of the first component to provide signals out of phase with each other and for causing the conductors of the second component to provide signals in phase with each other.

Claim 13

A directional broadbandwidth antenna array comprising: a first spiral-wound antenna component including a pair of adjacently disposed spiraled dipole-like conductors having inner ends adjacent a center point and outer ends oppositely disposed at a predetermined diameter such that the circumference of the first component is at least greater than one wavelength at a desired lowermost operating frequency; a second spiral-wound antenna component including a pair of adjacently disposed spiraled dipole-like conductors having inner ends adjacent the outer ends of the first component and outer ends oppositely disposed at a greater diameter such that the circumference of the second component is at least greater than two wavelengths at said desired lowermost operating frequency; and means mounting said first and second antenna components concentrically in a plane.

Claim 14

A directional broadbandwidth antenna array comprising: a first spiral-wound antenna component including a pair of adjacently disposed spiraled dipole-like conductors having inner ends adjacent a center point and outer ends oppositely disposed at a predetermined diameter such that the circumference of the first component is at least greater than one wavelength at a desired lowermost operating frequency; a second spiral-wound antenna component including a pair of adjacently disposed spiraled dipole-like conductors having inner ends adjacent the outer ends of the first component and outer ends oppositely disposed at a greater diameter such that the circumference of the second component is at least greater than two wavelengths at said desired lowermost operating frequency; and means mounting said first and second antenna components concentrically in a plane.

Claim 15

The array of claim 9, further having means for causing each of the conductors of the first antenna component to provide signals from the outer ends thereof out of phase with each other and for causing each of the conductors of the second antenna component to provide signals from the outer ends thereof in phase with each other.