Multi-layered compact slot antenna structure and method
First Claim
1. A multi-layered slot antenna comprising:
- a first conductive layer implementing a radiating slot;
a second conductive layer;
a dielectric layer sandwiched between the first conductive layer and the second conductive layer; and
a first loop inductor structure directly connected to the first conductive layer.
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Accused Products
Abstract
A multi-layered compact slot antenna shortens the physical length of a slot antenna (710) by using more than one conductive layer, separated by a dielectric layer, to create inductor structures (790, 795) within a slot antenna. Adding inductance to a slot antenna allows a physical reduction in slot length without altering the antenna'"'"'s radiant frequency range. The geometry of the inductor structures can be designed so that the electric current direction seen about the slot and the electric field direction across the slot is maintained, which aids antenna efficiency and allows arrangements of multiple compact slot antennas. Capacitor structures (780, 785) can also be included to balance out the additional stored magnetic energy in the inductor structures (790, 795).
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Citations
19 Claims
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1. A multi-layered slot antenna comprising:
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a first conductive layer implementing a radiating slot; a second conductive layer; a dielectric layer sandwiched between the first conductive layer and the second conductive layer; and a first loop inductor structure directly connected to the first conductive layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A radiotelephone comprising:
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a first conductive layer implementing a radiating slot; a second conductive layer implementing an extender of an inductor structure; a dielectric layer sandwiched between the first conductive layer and the second conductive layer; and a first via through the dielectric layer connecting the first conductive layer to the extender. - View Dependent Claims (16, 17)
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18. A method for constructing a compact slot antenna comprising the steps of:
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implementing a radiating slot in a first conductive layer; implementing an extender of an inductor structure in a second conductive layer; sandwiching a dielectric layer between the first conductive layer and the second conductive layer; and directly connecting the extender to the first conductive layer. - View Dependent Claims (19)
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Specification