Antenna polarization separation to provide signal isolation

• US 6,980,166 B2
• Filed: 12/09/2002
• Issued: 12/27/2005
• Est. Priority Date: 10/19/2000
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Gilmore, Robert P.
• Primary Examiner(s): Vannucci, James
• Application Number:
  US10/316,198
• Publication Number:
  US 20030210194A1
• Time in Patent Office: 1,114 Days
• Field of Search: 343/702, 343/700.MS, 343/725, 455/78, 455/101
• US Class Current: 343/725
• CPC Class Codes: H01Q 1/2275 associated to expansion card or bus, e.g. in PCMCIA, PC cards, Wireless USB
• CPC Class Codes: H01Q 1/521 reducing the coupling between adjacent antennas
• CPC Class Codes: H01Q 21/24 Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001

Abstract

A first antenna component has a first polarization. A second antenna component has a second polarization. The second polarization is distinct from the first polarization to provide signal isolation between the first antenna component and the second antenna component. The first antenna component and the second antenna component are coupled in close proximity in a single form factor.

Claims

1. A method capable of radiating energy in a plurality of planes, comprising:

radiating energy of a first polarization from a first plane by a first antenna component disposed substantially entirely in said first plane; and

radiating energy from a second plane by a second antenna component disposed substantially entirely in a second plane in a second polarization distinct from the first polarization to provide a signal isolation between the first antenna component and the second antenna component, said first antenna component and said second antenna component coupled in close proximity in a single form factor, wherein the signal isolation comprises isolation between a first signal received in the first polarization and a second signal simultaneously transmitted in the second polarization, wherein the first signal and the second signal use a single frequency in common.

2. The method of claim 1, further comprising radiating energy from the single form factor as one of:

a printed circuit board, an integrated chip, a circuit card, a configuration card, desk top device chassis, a lap top device chassis, a set top device chassis, and a hand held device chassis.

3. The method of claim 1, further comprising disposing the first antenna component and the second antenna component in a single plane oriented substantially identically to said first plane and to said second plane.

4. The method of claim 3, further comprising polarizing the first polarization as a linear polarization vertical to the single plane and the second polarization as a linear polarization horizontal to the single plane.

5. The method of claim 1, further comprising enabling the first antenna component with an electric field structure and the second antenna component with a magnetic field structure.

6. The method of claim 1, further comprising:

radiating from the first antenna component from one of a dipole antenna, a monopole antenna, or an inverted F antenna; and

radiating from the second antenna from one of a loop antenna, a ground-plane-terminated half loop antenna, or a slot antenna.

7. The method of claim 1, further comprising etching the first antenna component onto a substrate or etching the first antenna component out of a substrate.

8. The method of claim 1, further comprising driving and/or

receiving from two axes by a single patch on a substrate, said substrate including the first antenna component and the second antenna component.

9. The method of claim 6, further comprising placing at least one parasitic patch adjacent to the single patch on at least one additional layer of the substrate of the first antenna component and the second antenna component.

10. The method of claim 6, further comprising enabling the single patch as one of round, square, and helical.

11. The method of claim 6 further comprising notching a perimeter of the single patch.

12. The method of claim 6 further comprising physically coupling the independent receivers and/or transmitters to the two axes.

13. The method of claim 1, further comprising meandering one or both of the first antenna component and the second antenna component.

14. The method of claim 1, further comprising placing the single form factor in a housing for the first antenna component and the second antenna component to provide separation from shielding material associated with the single form factor.