Compact low RCS ultra-wide bandwidth conical monopole antenna
First Claim
1. An ultra-wide bandwidth low radar cross-section microwave antenna capable of operating between 1 GHz and 18 GHz with a VSWR of less than 2:
- 1, comprising;
a ground plane; and
, a cone spaced from said ground plane and having an apex with an apex base size that establishes a high frequency cutoff of at least 18 GHz, the size of the apex of said cone being such as to establish an 18 GHz high frequency cutoff, the size of said cone establishing a 1 GHz low frequency cutoff, the cone antenna being fed at the apex of said cone.
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Accused Products
Abstract
A low radar cross-section monocone antenna is provided with an ultra-wide bandwidth in the microwave region of the electromagnetic spectrum running from 1 gigahertz to 18 gigahertz by decreasing the low frequency cutoff through enlarging the overall dimensions of the cone while at the same time maintaining the base diameter of the apex of the cone to the initially-set dimension that establishes the high frequency cutoff of the antenna. The apex of this cone that serves as its feed point has a base diameter that results in the wide bandwidth, with the monocone antenna having a 5 dBi gain and omnidirectional coverage.
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Citations
20 Claims
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1. An ultra-wide bandwidth low radar cross-section microwave antenna capable of operating between 1 GHz and 18 GHz with a VSWR of less than 2:
- 1, comprising;
a ground plane; and
,a cone spaced from said ground plane and having an apex with an apex base size that establishes a high frequency cutoff of at least 18 GHz, the size of the apex of said cone being such as to establish an 18 GHz high frequency cutoff, the size of said cone establishing a 1 GHz low frequency cutoff, the cone antenna being fed at the apex of said cone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- 1, comprising;
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9. A method for increasing the bandwidth of a monocone antenna, comprising the step of:
increasing the size of a monocone antenna without increasing the size of the apex base thereof, thus to decrease the low frequency cutoff of the monocone antenna without affecting the high frequency cutoff of the monocone antenna. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An omnidirectional ultra-wide bandwidth low radar cross-section antenna for use in the microwave band, comprising:
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a ground plane; and
,a monocone spaced from said ground plane, said antenna being fed at the apex of said monocone, said apex having a base size that establishes an 18;
1 frequency ratio for said antenna. - View Dependent Claims (17, 18, 19, 20)
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Specification