Wi-gig signal radiation via ground plane subwavelength slit

A chassis for a mobile device comprising:

• a cover having a slit along one dimension of the cover wherein the cover is configured to receive a transceiver coupled to an antenna array that is configured to transmit a signal at a transmit frequency;
• a first aperture of the slit configured to face a first direction internal to the mobile device, the first aperture having a dimension that comprises a first subwavelength of the transmit frequency;
• and
• a second aperture of the slit configured to face a direction opposite to the first direction, the second aperture having a dimension that comprises a second subwavelength of the transmit frequency,
• wherein the slit comprises a channel that connects the first aperture and the second aperture, and
• wherein the channel is configured to support a transverse electromagnetic mode for propagation of the signal from the first aperture through the channel to the second aperture when the first aperture is irradiated by the antenna array.

A method of operating a mobile device comprising:

• sending a signal to at least one Evolved Node B (eNB) from a transceiver via an antenna array that is configured to transmit the signal at a transmit frequency,
• wherein the transceiver and the antenna array are within a chassis,
• wherein the chassis has a slit along one dimension of the chassis,
• wherein a first aperture of the slit is configured to face a first direction internal to the mobile device, the first aperture having a dimension that comprises a first subwavelength of the transmit frequency,
• wherein a second aperture of the slit is configured to face a direction opposite to the first direction, the second aperture having a dimension that comprises a second subwavelength of the transmit frequency,
• wherein the slit comprises a channel that connects the first aperture and the second aperture,
• wherein the channel is configured to support a transverse electromagnetic mode for propagation of the signal from the first aperture through the channel to the second aperture,
• wherein the antenna array is configured to irradiate the first aperture, and
• wherein the chassis functions as a secondary radiator;
• and
• receiving a return signal from at least one eNB via the antenna array.

A mobile device comprising:

• a transceiver coupled to an antenna array that is configured to operate as a primary radiator and transmit a signal at a first transmit frequency, the transceiver and antenna array situated within a chassis that has a slit along one dimension;
• a first side of the chassis configured to face a first direction internal to the mobile device and including a first dimension of the slit that comprises a first aperture, the first dimension being a first subwavelength of the transmit frequency;
• a second side of the chassis configured to face free space and having a second dimension of the slit that comprises a second aperture, the second dimension being a second subwavelength of the transmit frequency;
• and
• a channel in the chassis that connects the first aperture and the second aperture, wherein
• the antenna array is configured to face the first side of the chassis to transmit the signal to the first aperture,
• the channel is configured to support a transverse electromagnetic mode for propagation of the signal from the first aperture through the channel to the second aperture, and
• the chassis, when irradiated by the primary radiator, functions as a secondary radiator.