Polarization independent active artificial magnetic conductor
First Claim
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1. An active artificial magnetic conductor comprising:
- a ground plane;
an array of unit cells coupled to the ground plane, each unit cell comprising;
a low-impedance shunt coupled to the ground plane; and
an impedance element coupled to the low impedance shunt; and
a plurality of non-Foster circuits coupled in two different directions between impedance elements of adjacent neighboring unit cells in the array of unit cells;
wherein the low impedance shunts coupled to the ground plane in each unit cell have a low inductance; and
wherein an inductance of the low inductance of the low-impedance shunts is such that the mutual coupling between impedance elements is minimized thereby making the active artificial magnetic conductor stable.
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Abstract
An active artificial magnetic conductor includes a ground plane and an array of unit cells coupled to the ground plane. Each unit cell includes a low impedance shunt coupled to the ground plane and an impedance element coupled to the low impedance shunt. A plurality of non Foster circuits are coupled in two different directions between impedance elements of adjacent neighboring unit cells in the array of unit cells.
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Citations
23 Claims
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1. An active artificial magnetic conductor comprising:
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a ground plane; an array of unit cells coupled to the ground plane, each unit cell comprising; a low-impedance shunt coupled to the ground plane; and an impedance element coupled to the low impedance shunt; and a plurality of non-Foster circuits coupled in two different directions between impedance elements of adjacent neighboring unit cells in the array of unit cells; wherein the low impedance shunts coupled to the ground plane in each unit cell have a low inductance; and wherein an inductance of the low inductance of the low-impedance shunts is such that the mutual coupling between impedance elements is minimized thereby making the active artificial magnetic conductor stable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of making an active artificial magnetic conductor comprising:
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forming an array of unit cells coupled to a ground plane, each unit cell comprising; a low-impedance shunt coupled to the ground plane; and an impedance element coupled to the low impedance shunt; and coupling a plurality of non-Foster circuits in two different directions between impedance elements of adjacent neighboring unit cells in the array of unit cells; wherein the low impedance shunts coupled to the ground plane in each unit cell have a low inductance; and wherein an inductance of the low inductance of the low-impedance shunts is such that the mutual coupling between impedance elements is minimized thereby making the active artificial magnetic conductor stable. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification