Radio signal pickup from an electrically conductive substrate utilizing passive slits
First Claim
1. A device, comprising:
- a substrate of electrically conductive material including a plurality of separate apertures formed in the substrate,one or more of the plurality of separate apertures comprises an active antenna having length dimension that is substantially larger than a width dimension, an edge of the aperture along the length dimension is electrically coupled with a radio frequency (RF) receiver and an opposing edge of the aperture along the length dimension is electrically coupled with a ground potential;
the length dimension is selected to detune the active antenna at a frequency that is lower than a target frequency to be detected by the RF receiver, the length dimension being longer than a wavelength of the target frequency divided by two; and
another of the one or more of the plurality of separate apertures comprises a passive slit that is not electrically coupled with the RF receiver or the ground potential, the RF receiver, the active antenna, and the passive slit being configured as a detection system, the detection system being configured to detect a signal having another frequency above the target frequency, the signal being generated by a device placed in close proximity to the detection system.
13 Assignments
0 Petitions
Accused Products
Abstract
Embodiments of the present application relate generally to electronic hardware, computer software, wireless communications, network communications, wearable, hand held, and portable computing devices for facilitating communication of information and presentation of media. An electrically conductive substrate, such as a sheet of metal or metal alloy, for example, includes an active antenna formed by a slot or opening formed in the substrate, and also includes at least one separate passive slot or opening (e.g., a passive slit) formed in the substrate. The active antenna may be intentionally detuned from one or more target frequencies (e.g., 802.11, 2.4 GHz, 5 GHz) such that the active antenna is not optimized (e.g., is not tuned) for the one or more target frequencies. One portion of the active antenna may be electrically coupled with a ground potential. Another portion of the active antenna may be electrically coupled with a RF receiver, transmitter, or transceiver.
6 Citations
14 Claims
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1. A device, comprising:
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a substrate of electrically conductive material including a plurality of separate apertures formed in the substrate, one or more of the plurality of separate apertures comprises an active antenna having length dimension that is substantially larger than a width dimension, an edge of the aperture along the length dimension is electrically coupled with a radio frequency (RF) receiver and an opposing edge of the aperture along the length dimension is electrically coupled with a ground potential; the length dimension is selected to detune the active antenna at a frequency that is lower than a target frequency to be detected by the RF receiver, the length dimension being longer than a wavelength of the target frequency divided by two; and another of the one or more of the plurality of separate apertures comprises a passive slit that is not electrically coupled with the RF receiver or the ground potential, the RF receiver, the active antenna, and the passive slit being configured as a detection system, the detection system being configured to detect a signal having another frequency above the target frequency, the signal being generated by a device placed in close proximity to the detection system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification