System and method for integration of an antenna element and front-end module co-located into a speaker chamber
An information handling system to wirelessly transmit and receive data may include a base chassis including a metal C-cover and a D-cover, the metal C-cover to house a speaker grill, the speaker grill covering a speaker to emit audio waves; a speaker grill platform antenna formed within the C-cover from a portion of the speaker grill to emit a target radio frequency (RF), including: a slot formed around the portion of the speaker grill to form a peninsula on the speaker grill that is physically separated from the C-cover; a cavity formed behind the peninsula between the C-cover and the D-cover, the cavity including walls formed around the back side of the peninsula to electrically isolate the cavity; a printed circuit board assembly (PCBA) including: an antenna front end circuit operatively coupled to the speaker grill to excite the speaker grill and dynamically switch frequencies based on the target frequency to be emitted by the speaker grill platform antenna; and a contact pin directly coupling an excitation signal to excite the speaker grill platform antenna.
1. An information handling system to wirelessly transmit and receive data comprising:
a base chassis including a metal bottom cover and a metal top cover, the metal top cover to house a speaker grill, the speaker grill covering a speaker box housing a speaker to emit audio waves;
a speaker grill platform antenna formed from a portion of the speaker grill to emit a target radio frequency (RF) by a slot formed through the top cover around the portion of the speaker grill to form a peninsula of the portion of the speaker grill;
the speaker grill platform antenna formed over a cavity of the speaker box under the speaker grill in the metal top cover;
a printed circuit board assembly (PCBA) comprising an antenna front end circuit operatively coupled to the speaker grill to excite the speaker grill to transmit RF data communications; and
a contact pin directly coupling an excitation signal to excite the speaker grill platform antenna.
2. The information handling system of claim 1 , wherein the contact pin includes a spring element and the PCBA is fixed to the metal top cover of the base chassis to bias the contact pin against the speaker grill.
3. The information handling system of claim 1 further comprising:
a plastic trim ring molded into the slot, the plastic trim ring is used to physically secure the PCBA to the speaker grill.
4. The information handling system of claim 1 further comprising:
a coaxial cable communicatively coupling the antenna front end circuit to a tuning module through the walls of the cavity of the speaker box.
5. The information handling system of claim 1 further comprising:
a speaker wire communicatively coupling the speaker to a signal source wherein the speaker wire is routed out of the cavity of the speaker box and along an exterior side of the walls forming the cavity to reduce interference with the speaker grill platform antenna.
6. The information handling system of claim 1 further comprising:
the antenna front end circuit co-located with a tuning module within the cavity formed by the walls.
7. The information handling system of claim 1 further comprising:
a plastic trim ring molded into the slot such that the plastic trim ring, speaker grill platform antenna, and metal top cover form a flush surface.
8. The information handling system of claim 1 further comprising:
a trench formed into the speaker grill extending from the slot to receive a plastic trim ring around the speaker grill.
9. A base chassis assembly for an information handling system comprising:
a metal top cover to house a speaker grill, the speaker grill covering a speaker to emit audio waves;
the speaker grill formed within the metal top cover of the base chassis assembly to emit a target radio frequency (RF), including:
a slot formed around a portion of the speaker grill forming a peninsula on the speaker grill that is physically separated from the metal top cover of the base chassis assembly, where the peninsula serves as a speaker grill platform antenna;
a cavity formed behind the peninsula, the cavity including walls formed around the back side of the peninsula to electrically isolate the cavity between the metal top cover and a metal bottom cover of the base chassis assembly; and
a printed circuit board assembly (PCBA) secured inside the cavity behind the peninsula of the speaker grill platform antenna including an antenna front end circuit operatively coupled to the speaker grill platform antenna to excite the speaker grill platform antenna via a contact pin coupling an excitation signal with the antenna front end circuitry.
10. The assembly of claim 9 , wherein the contact pin includes a spring element to bias the contact pin against the speaker grill.
11. The assembly of claim 9 further comprising:
a plastic trim ring molded into the slot to form a flush surface across the slot between the speaker grill and the metal top cover.
12. The assembly of claim 9 further comprising:
a coaxial cable communicatively coupling the antenna front end circuit to a tuning module through the walls of the cavity.
13. The assembly of claim 9 further comprising:
a speaker wire communicatively coupling the speaker to a signal source wherein the speaker wire is routed out of the cavity and along an exterior side of the walls forming the cavity.
14. The assembly of claim 9 further comprising:
the antenna front end circuit co-located with a tuning module within the cavity formed by the walls.
15. The assembly of claim 9 further comprising:
a plastic trim ring molded into the slot, wherein the PCBA is coupled to the plastic trim ring.
16. The assembly of claim 9 further comprising:
a trench formed into the metal top cover of the base chassis assembly, where the trench extends around the speaker grill to form an outer frame with the slot and the trench and slot to receive a plastic trim ring.
17. An information handling system to transmit a communication signal comprising:
a base chassis with a top metal cover and bottom metal cover, the top metal cover to house a speaker grill with a plurality of speaker grill apertures, the speaker grill covering a speaker to emit audio waves via the speaker grill apertures;
the speaker grill formed within the metal top cover to form a speaker grill platform antenna to emit a target radio frequency (RF) when an excitation current is applied to a portion of the speaker grill, including:
a slot formed around the portion of the speaker grill forming a peninsula on the speaker grill as the speaker grill platform antenna, where the slot physically separates the peninsula portion of the speaker grill from the metal top cover;
a cavity formed behind the speaker grill with an electromagnetic isolation (EMI) wall placed around the perimeter of the cavity and the metal bottom cover of the base chassis forming the bottom of the cavity, where the cavity further serves as a speaker cavity;
a printed circuit board assembly (PCBA) located within the cavity comprising:
an antenna front end;
a tuning module operatively coupled to the speaker grill platform antenna to, upon initiation of the antenna front end, excite the speaker grill platform antenna via a contact pin and dynamically switch frequencies based on the target frequency to be emitted by the speaker grill platform antenna; and
a coaxial cable communicatively coupling the antenna front end to a processor.
18. The information handling system of claim 17 , further comprising:
a plastic trim ring molded into the slot to physically secure the PCBA to the speaker grill inside the cavity.
19. The information handling system of claim 17 , further comprising:
a speaker wire communicatively coupling the speaker to a signal source wherein the speaker wire is routed out of the cavity and along an exterior side of the EMI wall forming the cavity.
20. The information handling system of claim 17 , further comprising:
a trench formed into the metal top cover and around the remainder of the speaker grill not formed as a peninsula by the slot and the trench and the slot to receive a plastic trim ring.