Method and system for receiving I and Q RF signals without a phase shifter utilizing a leaky wave antenna

• US 8,457,581 B2
• Filed: 12/30/2009
• Issued: 06/04/2013
• Est. Priority Date: 06/09/2009
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rofougaran, Ahmadreza, Rofougaran, Maryam
• Primary Examiner(s): LE, NHAN T
• Application Number:
  US12/650,277
• Publication Number:
  US 20100311376A1
• Time in Patent Office: 1,252 Days
• Field of Search: 455/269, 455/323, 455/333, 455/334, 343/702, 343/770
• US Class Current: 455/269
• CPC Class Codes: G01S 13/06 Systems determining position data of a target
• CPC Class Codes: G06K 7/10316 using at least one antenna particularly designed for interrogating the wireless record carriers antennas in general H01Q1/22
• CPC Class Codes: H01L 2224/16225 the item being non-metallic, e.g. insulating substrate with or without metallisation
• CPC Class Codes: H01L 2224/32225 the item being non-metallic, e.g. insulating substrate with or without metallisation
• CPC Class Codes: H01L 2224/73204 the bump connector being embedded into the layer connector
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/13091 Metal-Oxide-Semiconductor Field-Effect Transistor [MOSFET]
• CPC Class Codes: H01Q 1/2283 mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
• CPC Class Codes: H01Q 13/20 Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
• CPC Class Codes: H01Q 13/22 Longitudinal slot in boundary wall of waveguide or transmission line H01Q13/203 takes precedence
• CPC Class Codes: H01Q 15/006 Selective devices having photonic band gap materials or materials of which the material properties are frequency dependent, e.g. perforated substrates, high-impedance surfaces
• CPC Class Codes: H01Q 15/0066 said selective devices being reconfigurable, tunable or controllable, e.g. using switches
• CPC Class Codes: H01Q 15/23 Combinations of reflecting surfaces with refracting or diffracting devices
• CPC Class Codes: H01Q 19/06 using refracting or diffracting devices, e.g. lens radome H01Q1/42
• CPC Class Codes: H04B 1/0458 Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages matching circuits in general H03H
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 7/24 for communication between two or more posts wireless communication networks H04W

Abstract

Methods and systems for receiving in-phase and quadrature (I and Q) radio frequency (RF) signals without a phase shifter utilizing a leaky wave antenna are disclosed and may include generating in-phase and quadrature signals using a leaky wave antenna coupled to one or more low-noise amplifiers (LNAs) on a chip and without a phase shifter. The RF I and Q signals may be communicated from the single leaky wave antenna using coplanar feed points and/or feed points on a top surface and a bottom surface of the single leaky wave antenna. The leaky wave antennas may be integrated on the chip, on a package to which the chip is affixed, and/or on a printed circuit board to which the chip is affixed. The RF I and Q signals may be amplified by the one or more LNAs and may down-convert the RF I and Q signals to baseband signals.

Claims

1. A method for communication, the method comprising:

in a wireless device comprising one or more low-noise amplifiers on a chip, wherein said one or more low-noise amplifiers are coupled to one or more leaky wave antennas;

receiving a radio frequency (RF) signal via one of said one or more or more leaky wave antennas; and

generating, from said received RF signal, using one of said one or more or more leaky wave antennas and without using a phase shifter, an in-phase RF signal and a quadrature RF signal.

2. The method according to claim 1, comprising communicating said in-phase RF signal and said quadrature RF signal from said single leaky wave antenna using coplanar feed points.

3. The method according to claim 1, comprising communicating said in-phase RF signal and said quadrature RF signal from said single leaky wave antenna using feed points on a top surface and a bottom surface of said single leaky wave antenna.

4. The method according to claim 1, wherein said one or more leaky wave antennas is integrated on said chip.

5. The method according to claim 1, wherein said one or more leaky wave antennas is integrated on a package to which said chip is affixed.

6. The method according to claim 1, wherein said one or more leaky wave antennas is integrated on a printed circuit board to which said chip is affixed.

7. The method according to claim 1, comprising amplifying said in-phase RF signal and said quadrature RF signal with said one or more low-noise amplifiers.

8. The method according to claim 1, comprising down-converting said in-phase RF signal and said quadrature RF signal to baseband signals.

9. The method according to claim 8, comprising filtering said baseband signals.

10. The method according to claim 1, comprising down-converting said RF I and Q signals to intermediate frequency (IF) signals.

11. A system for enabling communication, the system comprising:

one or more circuits comprising one or more low-noise amplifiers coupled to one or more leaky wave antennas, said one or more circuits integrated on a chip, wherein;

said one or more circuits are operable to receive a radio frequency (RF) signal via one of said one or more or more leaky wave antennas; and

said one or more circuits are operable to generate, from said received RF signal, using one of said one or more or more leaky wave antennas and without using a phase shifter, an in-phase RF signal and a quadrature RF signal.

12. The system according to claim 11, wherein said one or more circuits are operable to communicate said in-phase RF signal and said quadrature RF signal from said single leaky wave antenna using coplanar feed points.

13. The system according to claim 11, wherein said one or more circuits are operable to communicate said in-phase RF signal and said quadrature RF signal from said single leaky wave antenna using feed points on a top surface and a bottom surface of said single leaky wave antenna.

14. The system according to claim 11, wherein said one or more leaky wave antennas is integrated on said chip.

15. The system according to claim 11, wherein said one or more leaky wave antennas is integrated on a package to which said chip is affixed.

16. The system according to claim 11, wherein said one or more leaky wave antennas is integrated on a printed circuit board to which said chip is affixed.

17. The system according to claim 11, wherein said one or more circuits are operable to amplify said in-phase RF signal and said quadrature RF signal with said one or more low-noise amplifiers.

18. The system according to claim 11, wherein said one or more circuits are operable to down-convert said in-phase RF signal and said quadrature RF signal to baseband signals.

19. The system according to claim 18, wherein said one or more circuits are operable to filter said baseband signals.

20. The system according to claim 11, wherein said one or more circuits are operable to down-convert said RF I and Q signals to intermediate frequency (IF) signals.