RF antenna arrangement configured to be a part of a lid to an apparatus
An RF antenna arrangement has the same or slightly larger footprint as the RF shield for radio chips on a printed circuit board. The apparatus includes a printed circuit board, a digital processor, a radio chip(s), a radio frequency shield, a lid, and an RF antenna arrangement(s). The lid has the same or slightly larger footprint as the RF shield, which enables the lid to fit on the RF shield. The RF antenna is formed as an integral part of the lid. The apparatus also includes an RF transmission coaxial cable(s) having a first end physically and electrically connected to the RF antenna arrangement(s) and the surface of the lid, and a second end electrically coupled to an RF connector. By forming the antenna arrangement(s) from the lid, this invention solves the space constraint problems of antenna placements for wireless device applications. Additionally, this invention is cost-effective and simple to manufacture.
1. An apparatus comprising:
a printed circuit board having a first surface;
an integrated chip mounted on the first surface and including radio frequency (RF) communication circuitry;
an RF shield coupled to the first surface, the RF shield directly overlying and encasing the integrated chip;
a lid attached to and directly overlying the RF shield, the lid including a second surface and a first RF antenna on the second surface, the lid having a footprint that is greater than or equal to a footprint of the RF shield on the first surface;
an RF transmission coaxial cable having an end portion physically and electrically connected to the first RF antenna; and
wherein the RF shield includes two or more first flaps coupled to the first surface, and the lid includes two or more second flaps engaged with the two or more first flaps and securely connecting the lid to the RF shield.
2. The apparatus of claim 1 , wherein the first RF antenna includes:
a first section extending upwardly from the second surface, and
a second section coupled to the first section and spaced apart from the second surface, the end portion of the RF transmission coaxial cable directly coupled to at least one of the first section and the second section.
3. The apparatus of claim 2 , wherein the second section includes a first RF antenna element sized and shaped for communication at a first RF frequency and includes a second RF antenna element sized and shaped for communication at a second RF frequency different than the first RF frequency.
4. The apparatus of claim 2 , wherein the end portion includes a first terminal directly coupled to the first section and a second terminal directly coupled to the second section.
5. The apparatus of claim 1 , wherein the lid includes a flat sheet and the first RF antenna is stamped out from the flat sheet in an antenna shape.
6. The apparatus of claim 1 , wherein the RF shield or the lid is directly coupled to a ground of the printed circuit board on the first surface.
7. The apparatus of claim 1 , wherein two or more surfaces of the lid are in direct contact with two or more surfaces of the RF shield.
8. The apparatus of claim 1 , further comprising:
a second RF antenna extending from the second surface and spaced apart from the first RF antenna on the second surface.
9. An apparatus, comprising:
a printed circuit board having a surface;
an integrated chip mounted on the surface, the integrated chip including radio frequency (RF) communication circuitry;
an RF shield directly coupled to the printed circuit board and encasing the integrated chip;
a lid coupled to the RF shield and including an upper portion and a first RF antenna with a first section and a second section, the first section including one or more RF receiving elements and the second section extending from the upper portion;
an RF transmission coaxial cable having an end portion physically and electrically connected to the first RF antenna; and
wherein the lid includes a second RF antenna having a third section with one or more RF receiving elements and a fourth section extending from the upper portion of the lid.
10. The apparatus of claim 9 , wherein the lid includes a first side portion extending downwardly from a first side of the upper portion and a second side portion extending downwardly from a second side of the upper portion opposite to the first side, the first side portion and the second side portion engaged with the RF shield.
11. The apparatus of claim 9 , the lid having a footprint that is greater than or equal to a footprint of the RF shield on the surface, and the footprint of the lid being smaller than or equal to an area of the surface.