Grounded antenna for a wireless communication device and method
DCFirst Claim
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1. A wireless communication device, comprising:
- a substrate;
a wireless communication chip positioned on said substrate;
a ground plane positioned on said substrate; and
an antenna electrically coupled to said wireless communication chip and electrically shorted at one end to said ground plane.
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Abstract
A wireless communication device includes an antenna for wireless communication with a remote interrogator. Several embodiments are disclosed to increase the options available to designers of wireless communication devices. In some embodiments, the antenna is a quarter wavelength long with one end of the antenna being grounded to provide desired impedance matching characteristics. The position of the ground plane relative to the antenna is also varied between embodiments. The connection from a wireless communication chip to the antenna is also varied between embodiments to provide alternate structures.
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Citations
20 Claims
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1. A wireless communication device, comprising:
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a substrate; a wireless communication chip positioned on said substrate; a ground plane positioned on said substrate; and an antenna electrically coupled to said wireless communication chip and electrically shorted at one end to said ground plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of constructing a wireless communication device, comprising:
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creating an ground plane/antenna component from a unitary piece of conductive foil; creating a chip component comprising a feed line, a chip grounding line, and a wireless communication chip; wrapping said ground plane/antenna component around a substrate such that an antenna portion of said ground plane/antenna component is positioned on a side opposite that where a ground plane portion of said ground plane/antenna component is positioned; and wrapping said chip component around a side of said substrate such that the chip is grounded by the chip grounding line and coupled to said antenna by said feed line. - View Dependent Claims (19, 20)
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Specification