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US3605106A Expired / Lapsed US ⏱️ 0.0 years remaining

Slot fitting of coded linear array antenna

Assignee: TDK Micronas GmbH
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Filing: 1969-06-30
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Granted: 1971-09-14
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Expires: 1989-06-30
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Abstract

Abstract There is provided a method for fitting the irregular radiator spacing as disclosed in U.S. Pat. No. 3,130,410 into a regular grid by approximation. This permits the construction of a spacecoded array in a simpler and less costly manner.

Inventors

  • 👤 Frank S Gutleber

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 15:14
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/06; H01Q21/22

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 127 words
A method of defining all available design K parameters for securing a predetermined directive radiation pattern for a linear array antenna having individual antenna units, in which relative spacing between said individual antenna elements is according to the equation the design K''s being utilized for a given value of minimum spacing lambda /X, where lambda /X is desired minimum spacing expressed as a fraction of a wavelength, and a given value of space angle theta o, the design K''s existing according to the equation where N is any integer, h is the roots of unity, X is an index number assuming the values 1, 2, 3 etc., and theta o is a given space angle associated with the null appearing between the main and first side lobes.
Claim 2
Independent Claim 127 words
A method of defining all available design K parameters for securing a predetermined directive radiation pattern for a linear array antenna having individual antenna units, in which relative spacing between said individual antenna elements is according to the equation the design K''s being utilized for a given value of minimum spacing lambda /X, where lambda /X is desired minimum spacing expressed as a fraction of a wavelength, and a given value of space angle theta o, the design K''s existing according to the equation where N is any integer, h is the roots of unity, X is an index number assuming the values 1, 2, 3 etc., and theta o is a given space angle associated with the null appearing between the main and first side lobes.
Claim 3
Independent Claim 88 words
A method of establishing available design K parameters for linear array antenna coding, in which positioning of individual antenna elements from each other is according to a predetermined code given by the equation and in which the relative code spacing S is restricted to a specified fraction of a wavelength times an integer according to equation where lambda wavelength, theta o is a given value of space angle associated with the null appearing between the main and first side lobes, and h is the hth roots of unity.
Claim 4
Independent Claim 88 words
A method of establishing available design K parameters for linear array antenna coding, in which positioning of individual antenna elements from each other is according to a predetermined code given by the equation and in which the relative code spacing S is restricted to a specified fraction of a wavelength times an integer according to equation where lambda wavelength, theta o is a given value of space angle associated with the null appearing between the main and first side lobes, and h is the hth roots of unity.
Claim 5
Independent Claim 95 words
A method of space coding a linear array antenna in which positioning of the individual antenna elements is according to the equation wherein the code positions are forced to occupy an integral value of a specified minimum spacing lambda /X expressed as a fraction of wavelength lambda , and the slot fitting requires that the spacing S be restricted to this specified fraction times an integer N, the method according to the equation where K represents available design parameters, theta o is a given value of space angle, h is the hth roots of unity.
Claim 6
Independent Claim 95 words
A method of space coding a linear array antenna in which positioning of the individual antenna elements is according to the equation wherein the code positions are forced to occupy an integral value of a specified minimum spacing lambda /X expressed as a fraction of wavelength lambda , and the slot fitting requires that the spacing S be restricted to this specified fraction times an integer N, the method according to the equation where K represents available design parameters, theta o is a given value of space angle, h is the hth roots of unity.
Claim 7
Independent Claim 90 words
A method of defining all available design K parameters which can be used to secure predetermined directive radiation pattern For a linear array antenna by forcing the code positions to occupy some integral value of a specified minimum separation, in which the individual antenna elements are positioned according to the equation the method according to the equation where lambda wavelength, lambda /X desired minimum spacing expressed as a fraction of wavelength, N any integer, theta o a given value of space angle, and h is the hth roots of unity.
Claim 8
Independent Claim 90 words
A method of defining all available design K parameters which can be used to secure predetermined directive radiation pattern For a linear array antenna by forcing the code positions to occupy some integral value of a specified minimum separation, in which the individual antenna elements are positioned according to the equation the method according to the equation where lambda wavelength, lambda /X desired minimum spacing expressed as a fraction of wavelength, N any integer, theta o a given value of space angle, and h is the hth roots of unity.
Claim 9
Independent Claim 93 words
A method of securing an exceedingly sharp central lobe and arbitrarily small side lobes for a linear array antenna by forcing the code positions to occupy some integral value of a specified minimum separation, in which positioning of individual antenna element is according to a predetermined code given by the equation the design K parameters are established according to the equation where lambda wavelength, lambda /X desired minimum spacing expressed as a fraction of wavelength, N any integer, theta o a given value of space angle, and h the hth roots of unity.
Claim 10
Independent Claim 93 words
A method of securing an exceedingly sharp central lobe and arbitrarily small side lobes for a linear array antenna by forcing the code positions to occupy some integral value of a specified minimum separation, in which positioning of individual antenna element is according to a predetermined code given by the equation the design K parameters are established according to the equation where lambda wavelength, lambda /X desired minimum spacing expressed as a fraction of wavelength, N any integer, theta o a given value of space angle, and h the hth roots of unity.

References Cited (Backward Citations)

US3182330A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-09-13 1975-03-15 1975-09-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-09-13 1979-03-15 1979-09-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-09-13 1983-03-15 1983-09-14 $7700.00 Window Closed / Lapsed

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