Very high frequency dielectric substrate wave guide

• US 7,557,758 B2
• Filed: 03/26/2007
• Issued: 07/07/2009
• Est. Priority Date: 03/26/2007
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rofougaran, Ahmadreza (Reza)
• Primary Examiner(s): Nguyen; Hoang V
• Application Number:
  US11/691,460
• Publication Number:
  US 20080238796A1
• Time in Patent Office: 834 Days
• Field of Search: 343/700.MS, 343/772, 455/90.3, 455/73
• US Class Current: 343/700.0MS
• CPC Class Codes: H01L 2224/32145 the bodies being stacked
• CPC Class Codes: H01Q 1/005 Damping of vibrations; Means for reducing wind-induced forces
• CPC Class Codes: H01Q 1/007 specially adapted for indoor communication
• CPC Class Codes: H01Q 13/24 constituted by a dielectric or ferromagnetic rod or pipe H01Q13/28 takes precedence

Abstract

A radio transceiver device includes circuitry for radiating electromagnetic signals at a very high radio frequency both through space, as well as through wave guides that are formed within a substrate material. In one embodiment, the substrate comprises a dielectric substrate formed within a board, for example, a printed circuit board. In another embodiment of the invention, the wave guide is formed within a die of an integrated circuit radio transceiver. A plurality of transceivers with different functionality is defined. Substrate transceivers are operable to transmit through the wave guides, while local transceivers are operable to produce very short range wireless transmissions through space. A third and final transceiver is a typical wireless transceiver for communication with remote (non-local to the device) transceivers.

Claims

1. A radio transceiver module operable to transmit through a dielectric substrate wave guide, comprising:

a dielectric substrate wave guide for conducting very high radio frequency (RF) electromagnetic signals wherein the substrate wave guide defines a bounded volume for conducting and substantially containing the very high RF electromagnetic signals and wherein the dielectric substrate wave guide is formed to have a resonant frequency that is at least 20 GHz;

a first substrate transceiver communicatively coupled to a first substrate antenna operable to transmit and receive the very high RF electromagnetic signals having a frequency of at least 20 GHz that substantially matches the resonant frequency of the dielectric substrate wave guide;

controllable electromagnetic field generation circuitry operable to generate a field through at least a portion of the wave guide to adjust the resonant frequency of the dielectric substrate wave guide;

a second substrate transceiver communicatively coupled to a second substrate antenna wherein the first and second substrate antennas are operably disposed to transmit and receive radio frequency communication signals, respectively, through the dielectric substrate wave guide; and

logic for setting a first electromagnetic field strength to generate a field to set a resonant frequency of the dielectric substrate wave guide to create a standing wave between the first and second antennas for transmissions substantially equal to the resonant frequency.

2. The radio transceiver module of claim 1 wherein the resonant frequency is based upon dimensions of the bounded volume and geometric properties of the wave guide, and wherein resonant frequency of the wave guide is approximately in the range of one of 25-30 GHz or 55-65 GHz.

3. The radio transceiver module of claim 1 wherein the dielectric substrate wave guide comprises a substantially uniformly doped dielectric region and wherein the logic sets the electromagnetic field strength level to adjust the dielectric substrate wave guide propagation properties to create the standing wave for transmissions between the first and second substrate antennas to compensate for at least one of variations in operational characteristics of the dielectric substrate wave guide due to process or temperature or to adjust a phase, wave length or resonant frequency of a signal being propagated for a desired operational effect.

4. The radio transceiver module of claim 1 further comprising a third antenna operable to transmit and receive through the dielectric substrate wave guide wherein the logic is further operable to set a second electromagnetic field strength operable to support transmissions to create a standing wave for transmissions between the first substrate antenna and the third substrate antenna.

5. The radio transceiver of claim 4 further including a third transceiver operably coupled to the third antenna wherein the controllable electromagnetic field generation circuitry operably generates an electromagnetic field to define a resonant frequency that allows one of the second and third transceivers operating as a receiver to receive a communication signal from the corresponding second or third antenna.

6. The radio transceiver module of claim 1 wherein the first, second and third substrate antennas are operably sized to communicatively couple with the dielectric substrate region.

7. The radio transceiver module of claim 1 wherein the first, second and third substrate antennas are each a ¼

wavelength dipole antenna sized for an RF signal having a frequency that is at least 20 GHz.

8. The radio transceiver module of claim 1 wherein the first substrate antenna is a ¼

wavelength dipole antenna sized for an RF signal having a frequency that is in the range of one of 25-30 GHz or 55-65 GHz.

9. The radio transceiver module of claim 1 wherein the first and second substrate antennas are each ¼

wavelength dipole antennas sized for an RF signal having a frequency that is in the range of 25-30 GHz or 55-65 GHz.

10. A radio transceiver module, comprising:

a dielectric substrate wave guide for conducting very high radio frequency (RF) electromagnetic signals wherein the substrate wave guide defines a bounded volume for conducting and substantially containing the very high RF electromagnetic signals and wherein the substrate wave guide is characterized by resonant frequency based upon conductive properties of the dielectric substrate wave guide;

a first substrate transmitter communicatively coupled to a first substrate antenna;

a first substrate receiver communicatively selectively coupled to a second substrate antenna and to a third substrate antenna wherein the first and second substrate antennas are operably disposed to transmit and receive radio frequency communication signals, respectively, through the dielectric substrate wave guide; and

wherein the first substrate receiver is selectively coupled to the second and third substrate antennas to receive transmissions from any one of a plurality of standing waves at the second and third substrate antennas.

11. The radio transceiver module of claim 10 further including a controllable electromagnetic field generation circuitry operable to generate a field through at least a portion of the wave guide to change conductive properties of the dielectric substrate wave guide to operably place a standing wave at one of the second and third substrate antennas.

12. A radio transceiver module, comprising:

at least one substrate transmitter;

first and second substrate receivers;

first and second layered dielectric substrate wave guides;

at least one first substrate antenna operably disposed to radiate very high frequency radio frequency electromagnetic signals through the first and second dielectric substrate wave guides;

a second substrate antenna operably disposed to receive electromagnetic signals from the first dielectric substrate wave guide;

a third substrate antenna operably disposed to receive electromagnetic signals from the second dielectric substrate wave guide; and

wherein the each dielectric substrate wave guide has different propagation properties and wherein the at least one substrate transmitter selects a frequency that will produce a standing wave at one of the second and third substrate antennas.

13. The radio transceiver module of claim 12 wherein at least one of the first, second and third substrate antennas is a ¼

wavelength dipole antenna.

14. The radio transceiver module of claim 12 wherein the at least one of the first, second and third substrate antennas is a ¼

wavelength dipole antenna sized to support radio frequency transmissions in the range of one of 25-30 GHz or 55-65 GHz.

15. A radio transceiver module, comprising:

a dielectric substrate wave guide for conducting very high radio frequency (RF) electromagnetic signals wherein the substrate wave guide defines a bounded volume for conducting and substantially containing the very high RF electromagnetic signals wherein the dielectric substrate wave guide has an associated resonant frequency that is at least 20 GHz;

first and second substrate transmitters operably disposed to transmit from first and second substrate antennas, respectively;

a receiver operably disposed to receive transmissions through a third substrate antenna;

a controllable electromagnetic field generation circuitry operable to generate a field through at least a portion of the dielectric substrate wave guide to adjust the resonant frequency of the dielectric substrate wave guide to operably conduct a transmitted signal and place a standing wave for a transmitted signal at one of the first and second substrate antennas; and

logic for setting a first electromagnetic field strength to generate a field to set a resonant frequency of the dielectric substrate wave guide to create a standing wave for transmissions from one of the first and second antennas to the third substrate antenna.

16. The radio transceiver module of claim 15 wherein the logic is operable to set or adjust the field strength to adjust the wave length of the standing wave based upon a determined signal quality at the receiver to improve the signal quality.

17. The radio transceiver module of claim 15 wherein the at least one of the first, second and third substrate antennas is a ¼

wavelength dipole antenna sized to support radio frequency transmissions in the range of one of 25-30 GHz or 55-65 GHz.

18. The radio transceiver module of claim 15 wherein the dielectric substrate wave guide is one of a dielectric substrate within an integrated circuit die or a dielectric substrate formed within a supporting board.

19. A method for transmitting a very high radio frequency, comprising:

generating a very high radio frequency signal that is at least 20 GHz;

transmitting the very high frequency radio signal from a first substrate antenna through a dielectric substrate wave guide to a second substrate antenna; and

creating an electromagnetic field across at least a portion of the wave guide to adjust a resonant frequency of the wave guide to create a standing wave at the second substrate antenna.

20. The method of claim 19 wherein the signal has a frequency in the range of 25-30 GHz or 55-65 GHz.

21. The method of claim 19 further including adjusting the electromagnetic field based upon signal quality of the data being transmitted to the second substrate antenna.

22. The method of claim 19 wherein the electromagnetic field is adjusted to compensate for at least one of process and temperature variations.