RECTENNA COVER FOR A WIRELESS POWER RECEPTOR
First Claim
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1. An apparatus comprising:
- a rectenna operable to convert microwave power to electrical power; and
a cover coupled to the rectenna and comprising a plurality of layers, the plurality of layers comprising a higher dielectric constant layer disposed outwardly from a lower dielectric constant layer, the cover operable to;
receive microwave power at a plurality of angles of incidence;
provide a substantial impedance match at the plurality of angles of incidence to broaden a receive pattern of the rectenna; and
direct the microwave power to the rectenna.
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Abstract
According to one embodiment, a cover comprising a higher dielectric constant layer disposed outwardly from a lower dielectric constant layer is coupled to a rectenna operable to convert microwave power to electrical power. The cover receives microwave power, provides a substantial impedance match for a plurality of angles of incidence, and directs the microwave power to the rectenna. The impedance match is selected to broaden a receive pattern of the rectenna.
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Citations
20 Claims
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1. An apparatus comprising:
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a rectenna operable to convert microwave power to electrical power; and a cover coupled to the rectenna and comprising a plurality of layers, the plurality of layers comprising a higher dielectric constant layer disposed outwardly from a lower dielectric constant layer, the cover operable to; receive microwave power at a plurality of angles of incidence; provide a substantial impedance match at the plurality of angles of incidence to broaden a receive pattern of the rectenna; and direct the microwave power to the rectenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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repeating the following for a predetermined number of layers to yield a rectenna cover; dispose a first higher dielectric constant layer outwardly from a first lower dielectric constant layer; and dispose a second lower dielectric constant layer outwardly from the first higher dielectric constant layer if a current number of layers does not equal the predetermined number of layers; and coupling the rectenna cover to a rectenna configured to convert microwave power to electrical power. - View Dependent Claims (13, 14, 15)
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16. A method comprising:
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receiving microwave power at a cover of a rectenna, the cover comprising a plurality of layers, the plurality of layers comprising a higher dielectric constant layer disposed outwardly from a lower dielectric constant layer, the rectenna operable to convert microwave power to electrical power, the microwave power comprising an electromagnetic wave; introducing a substantial impedance match to the electromagnetic wave, the impedance match selected to broaden a receive pattern of the rectenna; and directing the electromagnetic wave to the rectenna. - View Dependent Claims (17, 18, 19, 20)
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Specification