System and method for a slot antenna element co-located at a speaker grill with parasitic aperture
An information handling system to wirelessly transmit and receive data includes a processor; a memory; a wireless adapter for transceiving wireless communications via radiofrequency (RF) waves a metal C-cover to house a speaker grill, the speaker grill covering a speaker to emit audio waves; the speaker grill formed within the C-cover, the speaker grill including: a slot formed around a portion of a perimeter of the speaker grill that physically separates the portion of the speaker grill from the C-cover; a shunt formed at a distance along the slot creating a first portion of the slot and a second portion of the slot; a forked antenna element wherein: a first tine of the forked antenna is operatively coupled to the first portion of the slot to excite the first portion of the slot; and a second tine of the forked antenna is operatively coupled to the second portion of the slot to excite the second portion of the slot.
1. An information handling system to wirelessly transmit and receive data comprising:
a processor;
a memory;
a wireless adapter for transceiving wireless communications via radiofrequency (RF) waves;
a metal C-cover to house a speaker grill, the speaker grill covering a speaker to emit audio waves;
the speaker grill formed within the C-cover, the speaker grill comprising:
a slot formed around a portion of a perimeter of the speaker grill that physically separates the portion of the speaker grill from the C-cover;
a shunt formed at a distance along the slot creating a first portion of the slot and a second portion of the slot;
a forked antenna element wherein:
a first tine of the forked antenna is operatively coupled to the first portion of the slot to excite the first portion of the slot at a first resonance; and
a second tine of the forked antenna, grounded to the speaker grill, is operatively coupled to the second portion of the slot to excite the second portion of the slot at a second resonance.
2. The information handling system of claim 1 , wherein the first tine operates as an aperture antenna relative to the first portion of the slot.
3. The information handling system of claim 1 , comprising a speaker wire to provide data signals and power to the speaker wherein the speaker wire passes across the shunt separating the first portion of the slot from the second portion of the slot.
4. The information handling system of claim 1 , wherein the second tine of the forked antenna is grounded to the speaker grill.
5. The information handling system of claim 1 , wherein the distance along the slot at which the shunt is placed is selected to size the first portion of the slot and second portion of the slot based on a one or more target radio frequencies to be emitted by the first tine of the forked antenna and the second tine of the forked antenna.
6. The information handling system of claim 1 , wherein the first tine and the second tine are placed a different distances below the speaker grill inside surface.
7. The information handling system of claim 1 , wherein the first tine and the second tine are placed at different distances from the speaker grill.
8. The information handling system of claim 1 , comprising a cavity formed behind the speaker grill, wherein the cavity forms an audio cavity to alter characteristics of the audio waves and for a resonant cavity for resonance of RF EM waves produced by the forked antenna element.
9. A C-cover and D-cover assembly for an information handling system comprising:
a speaker grill made of metal and housed in the C-cover, the speaker grill covering an audio speaker;
a processor,
a memory,
a wireless adapter for transceiving wireless communications via radiofrequency (RF) waves;
a slot formed around a portion of the speaker grill and physically and operatively separating the speaker grill from the C-cover wherein the slot comprises a shunt formed at a distance along the slot creating a first section of the slot and a second section of the slot;
a radiating element comprising a first tine and a second tine:
wherein the first tine is operatively coupled to the first section of the slot to create an aperture antenna; and
wherein the second tine is operatively coupled to the second portion of the slot to excite the second section of the slot; and
a parasitic element to increase the frequency bandwidth of the radiating elements.
10. The assembly of claim 9 , wherein the first tine operates as an aperture antenna relative to the first section of the slot.
11. The assembly of claim 9 , comprising a speaker wire to provide data signals and power to the speaker wherein the speaker wire passes across the shunt to prevent noise originating from the speaker wire.
12. The assembly of claim 9 , wherein the distance along the slot at which the shunt is placed is selected based on one or more target radio frequencies to be emitted by the first tine of the radiating element and the second tine of the radiating element.
13. The assembly of claim 9 , wherein the first tine is 1.3 mm from the first section of the slot.
14. The assembly of claim 9 , wherein the second tine is 1.5 mm from the speaker grill.
15. The assembly of claim 9 , wherein an entire perimeter of the speaker grill includes the slot and a trench, the slot comprising an undercut portion to receive a plastic trim ring used to hide the slot.
16. The assembly of claim 9 , wherein the first tine and the second tine are placed a different distances from the speaker grill.
17. An information handling system to transmit a communication signal comprising:
a wireless interface adapter to, upon execution of computer code at a processor, initiate communication with a wireless network;
a metal C-cover to house a speaker grill, the speaker grill covering a speaker to emit audio waves;
the speaker grill formed within the C-cover, the speaker grill comprising:
a slot formed around a portion of a perimeter of the speaker grill that physically separates the portion of the speaker grill from the C-cover;
a shunt formed at a distance along the slot creating a first portion of the slot and a second portion of the slot;
a forked antenna element wherein:
a first tine of the forked antenna is operatively coupled to the first portion of the slot to excite the first portion of the slot in a first communication radiofrequency (RF) band; and
a second tine of the forked antenna is operatively coupled to the second portion of the slot to excite the second portion of the slot in a second communication RF band.
18. The information handling system of claim 16 , wherein the first tine operates as an aperture antenna relative to the first portion of the slot.
19. The information handling system of claim 16 , wherein the distance along the slot at which the shunt is placed is selected based on one or more target radio frequencies to be emitted by the first tine of the forked antenna and the second tine of the forked antenna for the first communication RF band and the second communication RF band.
20. The information handling system of claim 16 , wherein the first tine and the second tine are placed a different distances from the speaker grill.