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 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) comprising:
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.
2. The information handling system of claim 1 , wherein the contact pin includes a spring element and the PCBA is fixed to the C-cover to bias the contact pin against the speaker grill.
3. The information handling system of claim 1 , comprising a plastic trim ring molded into the slot, the plastic trim ring comprising a co-molded plastic screw boss structure to receive a screw physically securing the PCBA to the speaker grill.
4. The information handling system of claim 1 , comprising a coaxial cable communicatively coupling the antenna front end circuit to a tuning module through the walls of the cavity.
5. The information handling system of claim 1 , 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.
6. The information handling system of claim 1 , 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 , comprising a plastic trim ring molded into the slot, wherein the PCBA is coupled to the plastic trim ring via a thermoplastic staking process.
8. The information handling system of claim 1 , comprising a trench formed into the speaker grill to receive a plastic trim ring and couple the PCBA thereto inside the cavity.
9. A C-cover and D-cover assembly for an information handling system comprising:
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 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 C-cover;
a cavity formed behind the peninsula, the cavity including walls formed around the back side of the peninsula of the speaker grill to electrically isolate the cavity between the C-cover and D-cover;
a printed circuit board assembly (PCBA) comprising:
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; and
a contact pin directly coupling an excitation signal to excite the peninsula.
10. The assembly of claim 9 , wherein the contact pin includes a spring element to bias the PCBA and contact pin against the speaker grill.
11. The assembly of claim 9 , comprising a plastic trim ring molded into the slot, the plastic trim ring comprising a co-molded plastic screw boss structure to receive a screw physically securing the PCBA to the speaker grill inside the cavity.
12. The assembly of claim 9 , 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 , 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 , 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 , comprising a plastic trim ring molded into the slot, wherein the PCBA is coupled to the plastic trim ring via a thermoplastic staking process.
16. The assembly of claim 9 , comprising a trench formed into the speaker grill the trench and slot to receive a plastic trim ring and couple the PCBA thereto.
17. An information handling system to transmit a communication signal comprising:
a base chassis with a metal C-cover and metal D-cover, the 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 to emit a target radio frequency (RF) when an excitation current is applied thereto, including:
a slot formed around a portion of the speaker grill forming a peninsula on the speaker grill as a speaker grill platform antenna that is physically separated from the C-cover;
an electromagnetic isolation (EMI) wall placed around the perimeter of the speaker grill to form a cavity behind the speaker grill with the D-cover;
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 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 from the tuning module to excite 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 , comprising a plastic trim ring molded into the slot, the plastic trim ring comprising a co-molded plastic screw boss structure to receive a screw to physically secure the PCBA to the speaker grill inside the cavity.
19. The information handling system of claim 17 , 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 , comprising a trench formed into the speaker grill the trench and the slot to receive a plastic trim ring.