Bent-segment helical antenna
First Claim
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1. A helical antenna comprising a radiator portion having one or more helically wound radiators operating at pre-selected frequencies with first and second ends extending from a first end to a second end of the radiator portion, each of said one or more radiators comprising:
- at least one first radiator segment extending from the first end of the radiator portion toward the second end of the radiator portion;
at least one second radiator segment adjacent to said first radiator segment and extending from the second end toward the first end of the radiator portion where it terminates as the end of the radiator, being spaced apart from and overlapping along a length of said first radiator segment; and
at least one third radiator segment connecting said first radiator segment and said second radiator segment in series adjacent said second radiator portion end to form a complete radiator structure that is directed toward said second end radiator portion and then redirected back toward said first radiator portion end where it terminates.
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Abstract
A bent-segment helical antenna utilizes one or more radiators wrapped in a helical fashion. The radiators are comprised of a plurality of segments. A first segment extends from a feed network at a first end of a radiator portion of the antenna toward a second end of the radiator portion. A second segment is adjacent to and offset from the first segment. A third segment connects the first and second segments at the second end of the radiator portion.
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Citations
34 Claims
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1. A helical antenna comprising a radiator portion having one or more helically wound radiators operating at pre-selected frequencies with first and second ends extending from a first end to a second end of the radiator portion, each of said one or more radiators comprising:
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at least one first radiator segment extending from the first end of the radiator portion toward the second end of the radiator portion;
at least one second radiator segment adjacent to said first radiator segment and extending from the second end toward the first end of the radiator portion where it terminates as the end of the radiator, being spaced apart from and overlapping along a length of said first radiator segment; and
at least one third radiator segment connecting said first radiator segment and said second radiator segment in series adjacent said second radiator portion end to form a complete radiator structure that is directed toward said second end radiator portion and then redirected back toward said first radiator portion end where it terminates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A helical antenna, comprising:
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a helical radiator portion having one or more helical radiators with first and second ends extending from a first end to a second end of the radiator portion, each of said one or more radiators comprising;
a first radiator segment extending from the first end of the radiator portion toward the second end of the radiator portion;
a second radiator segment adjacent to said first radiator segment and extending from the second end toward the first end of the radiator portion where it terminates as the end of the radiator being spaced apart from and overlapping along a length of said first radiator segment; and
a third radiator segment connecting said first radiator segment and said second radiator segment in series adjacent said second radiator portion end; and
a feed portion comprising a feed network connected to said first segment of said one or more radiators. - View Dependent Claims (26, 27, 28, 29)
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30. A helical antenna comprising a radiator portion having one or more helically wound radiators with first and second ends extending from a first end to a second end of the radiator portion, each of said one or more radiators comprising:
- a first radiator segment extending from the first end of the radiator portion toward the second end of the radiator portion;
a second radiator segment adjacent to said first radiator segment and extending from the second end toward the first end of the radiator portion being spaced apart from and overlapping along a length of said first segment;
a third radiator segment connecting said first segment and said second radiator segment adjacent said second end;
said first radiator segment comprises first and second sub-segments connected in series with each other such that they are offset from a common central axis and extending from said first end of the radiator portion to said third radiator segment;
said second radiator segment comprises third and fourth sub-segments connected in series with each other such that they are offset from a common central axis and extending from said third radiator segment toward said first end of the radiator portion;
said first and fourth sub-segments are separated by a first pre-selected width such that a fourth radiator segment can be disposed therebetween; and
said second and third sub-segments are separated by a second pre-selected width narrower than said first pre-selected width. - View Dependent Claims (31, 32, 33, 34)
- a first radiator segment extending from the first end of the radiator portion toward the second end of the radiator portion;
Specification