Multiple-antenna device having an isolation element
View Patent ↗A multiple-antenna device is provided, comprising: a printed circuit board having a ground plane configured to provide electromagnetic isolation between a first side of the printed circuit board and a second side of the printed circuit board; a first non-conductive support member formed over the first side of the printed circuit board; a second non-conductive support member formed over the second side of the printed circuit board; a first antenna formed over the first non-conductive support member; and a second antenna formed over the second non-conductive support member, wherein the first antenna is electrically connected to a first feed point on a first portion of the printed circuit board that is not connected to the ground plane, and wherein the second antenna is electrically connected to a second feed point on a second portion of the printed circuit board that is not connected to the ground plane.
1. A multiple-antenna device comprising:
a printed circuit board having a ground plane configured to provide electromagnetic isolation between a first side of the printed circuit board and a second side of the printed circuit board;
a first non-conductive support member formed over the first side of the printed circuit board;
a second non-conductive support member formed over the second side of the printed circuit board;
a first antenna formed over the first non-conductive support member; and
a second antenna formed over the second non-conductive support member,
wherein the first antenna is electrically connected to a first feed point on a first portion of the printed circuit board that is not connected to the ground plane, and
wherein the second antenna is electrically connected to a second feed point on a second portion of the printed circuit board that is not connected to the ground plane.
2. The multiple-antenna device of claim 1 , wherein the first and second non-conductive support elements are integral to the printed circuit board.
3. The multiple-antenna device of claim 1 , wherein the first and second antennae are each one of: a slot antenna, a patch antenna, a dipole antenna, and an inverted F antenna.
4. The multiple-antenna device of claim 1 , further comprising:
a first transceiver circuit formed between the first side of the printed circuit board and the first non-conductive support member;
a second transceiver circuit formed between the second side of the printed circuit board and the second non-conductive support member;
a first electromagnetic isolation element formed between the first transceiver circuit and the first non-conductive support member, the first electromagnetic isolation element being connected to the ground plane; and
a second electromagnetic isolation element formed between the second transceiver circuit and the second non-conductive support member, the second electromagnetic isolation element being connected to the ground plane.
5. The multiple-antenna device of claim 1 , further comprising a transceiver circuit formed apart from the printed circuit board and connected to the first and second antennae via wires on the printed circuit board.
6. The multiple-antenna device of claim 1 ,
wherein the first antenna has a first polarization, and
wherein the second antennas has a second polarization different from the first polarization.
7. The multiple-antenna device of claim 6 , wherein the second polarization is ninety degrees shifted from the first polarization.
8. The multiple-antenna device of claim 1 ,
wherein the first antenna can be connected to a first transceiver using one of a first and a second polarization, and
wherein the second antenna can be connected to a second transceiver using one of the first and the second polarization.
9. The multiple-antenna device of claim 1 , further comprising:
a first field-shaping element formed on the first side of the printed circuit board, proximate to an outer edge of the first antenna, the first field-shaping element being configured to shape first electromagnetic fields radiating from the first antenna; and
a second field-shaping element formed on the second side of the printed circuit board, proximate to an outer edge of the second antenna, the second field-shaping element being configured to shape second electromagnetic fields radiating from the second antenna.
10. A multiple-antenna device comprising:
a printed circuit board having a ground plane configured to provide electromagnetic isolation between a first side of the printed circuit board and a second side of the printed circuit board;
a first non-conductive support member formed over the first side of the printed circuit board;
a second non-conductive support member formed over the second side of the printed circuit board;
a third non-conductive support member formed over the second side of the printed circuit board;
a fourth non-conductive support member formed over the first side of the printed circuit board;
a first antenna formed over the first non-conductive support member;
a second antenna formed over the second non-conductive support member,
a third antenna formed over the third non-conductive support member,
a fourth antenna formed over the fourth non-conductive support member.
11. The multiple-antenna device of claim 10 , further comprising:
a first transceiver circuit formed between the first side of the printed circuit board and the first and fourth non-conductive support members;
a second transceiver circuit formed between the second side of the printed circuit board and the second and third non-conductive support members;
a first electromagnetic isolation element formed between the first transceiver circuit and the first and fourth non-conductive support members, the first electromagnetic isolation element being connected to the ground plane; and
a second electromagnetic isolation element formed between the second transceiver circuit and the second and third non-conductive support members, the second electromagnetic isolation element being connected to the ground plane.
12. The multiple-antenna device of claim 10 , further comprising a transceiver circuit formed apart from the printed circuit board and connected to the first, second, third, and fourth antennae via wires on the printed circuit board.
13. The multiple-antenna device of claim 10 ,
wherein the first antenna has a first polarization,
wherein the second antenna has a second polarization,
wherein the third antenna has a third polarization,
wherein the fourth antenna has a fourth polarization,
wherein the first, second, third and fourth polarizations comprise at least a first polarization orientation and a second polarization orientation different from the first polarization orientation.
14. The multiple-antenna device of claim 13 , wherein the second polarization orientation is ninety degrees shifted from the first polarization orientation.
15. The multiple-antenna device of claim 1 ,
wherein the first antenna can be connected to a first transceiver using one of a first and a second polarization,
wherein the second antenna can be connected to a second transceiver using one of the first and the second polarization,
wherein the third antenna can be connected to a third transceiver using one of a first and a second polarization, and
wherein the fourth antenna can be connected to a fourth transceiver using one of a first and a second polarization.
16. The multiple-antenna device of claim 10 , further comprising:
a first field-shaping element formed on the first side of the printed circuit board, proximate to an outer edge of at least one of the first and fourth antennae, the first field-shaping element being configured to shape first electromagnetic fields radiating from at least one of the first and fourth antennae; and
a second field-shaping element formed on the second side of the printed circuit board, proximate to an outer edge of at least one of the second and third antennae, the second field-shaping element being configured to shape second electromagnetic fields radiating from at least one of the second and third antennae.
17. A multiple-antenna device formed in a printed circuit board comprising:
a first antenna formed on a first side of the printed circuit board;
a second antenna formed on a second side of the printed circuit board;
a ground plane formed between the first antenna and the second antenna, the ground plane configured to provide electromagnetic isolation between the first and second antennae;
a first non-conductive support member formed between the first antenna and the ground plane;
a second non-conductive support member formed between the second antenna and the ground plane,
wherein the first antenna is electrically connected to a first feed point on the printed circuit board that is not connected to the ground plane, and
wherein the second antenna is electrically connected to a second feed point on the printed circuit board that is not connected to the ground plane.
18. The multiple-antenna device of claim 17 , wherein the first and second antennae are each one of: a slot antenna, a patch antenna, a dipole antenna, and an inverted F antenna.
19. The multiple-antenna device of claim 17 ,
wherein the first antenna has a first polarization, and
wherein the second antennas has a second polarization different from the first polarization.
20. The multiple-antenna device of claim 17 ,
wherein the first antenna has a first polarization, and
wherein the second antennas has a second polarization different from the first polarization.
21. The multiple-antenna device of claim 20 , wherein the second polarization is ninety degrees shifted from the first polarization.