Dual receiver/transmitter radio devices with choke

• US 8,836,601 B2
• Filed: 01/31/2014
• Issued: 09/16/2014
• Est. Priority Date: 02/04/2013
• Status: Active Grant

• Current Assignee: Ubiquiti Inc.
• Original Assignee: Ubiquiti Networks, Inc. (Ubiquiti Inc.)
• Inventors: Sanford, John R., Schulz, Gary D.
• Primary Examiner(s): Karacsony, Robert
• Application Number:
  US14/170,441
• Publication Number:
  US 20140218255A1
• Time in Patent Office: 228 Days
• Field of Search: 343/779, 343/781.R, 343/834, 343/836, 343/837, 343/840
• US Class Current: 343/837
• CPC Class Codes: H01Q 1/1228 on a boom
• CPC Class Codes: H01Q 1/42 Housings not intimately mechanically associated with radiating elements, e.g. radome
• CPC Class Codes: H01Q 1/525 between emitting and receiving antennas
• CPC Class Codes: H01Q 15/14 Reflecting surfaces; Equivalent structures electromagnetic shields H01Q1/526
• CPC Class Codes: H01Q 15/16 curved in two dimensions, e.g. paraboloidal
• CPC Class Codes: H01Q 19/12 wherein the surfaces are concave H01Q19/18 takes precedence
• CPC Class Codes: H01Q 19/13 the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination H01Q19/15 takes precedence
• CPC Class Codes: H01Q 19/134 Rear-feeds; Splash plate feeds
• CPC Class Codes: H01Q 19/18 having two or more spaced reflecting surfaces H01Q19/20 takes precedence

Abstract

Wireless radio apparatuses for point-to-point or point-to-multipoint transmission/communication of high bandwidth signals having dual receivers and transmitters. Radio devices and systems may include a pair of reflectors separated by an isolation choke boundary. The device may be configured to operate in any appropriate band (e.g., a 5 GHz band, a 24 GHz band, etc.) and may simultaneously transmit and receive with minimal crosstalk. The isolation choke boundary may have ridges that extend between the first and second parabolic reflectors to a height that may be tuned to the band. The isolation choke boundary provides greater than 10 dB isolation between the first and the second parabolic reflectors may be in a fixed configuration relative to each other so that they are aligned to send/receive in parallel. The two reflectors may be formed of a single housing, with fixed parallel alignment.

Claims

1. A radio device for transmission of wireless signals, the device comprising:

a first reflector;

a second reflector;

radio circuitry configured for transmission of radio-frequency signals from the first reflector and configured for reception of radio-frequency signals from the second reflector; and

an isolation choke boundary coupled between the first reflector and the second reflector, wherein the isolation choke boundary comprises a plurality of ridges extending between the first and second reflectors.

2. The device of claim 1, wherein an overall isolation of radio frequency signals between the first and second reflectors including the isolation provided by the isolation choke boundary is greater than about 60 dB.

3. The device of claim 1, wherein the isolation choke boundary is mounted to an outer edge of the first reflector and an outer edge of the second reflector.

4. The device of claim 1, wherein the plurality of ridges comprises at least 10 ridges.

5. The device of claim 1, wherein a first subset of the ridges of the isolation choke boundary follow a curvature of the outer edge of the first reflector and a second subset of the ridges of the isolation choke boundary follow a curvature of the outer edge of the second reflector.

6. The device of claim 1, wherein the radio circuitry is configured for transmission of broadband radio-frequency signals between about 4 and about 8 GHz from the first reflector and for reception of broadband radio-frequency signals between about 4 and about 8 GHz from the second reflector.

7. The device of claim 1, wherein at least some of the ridges of the isolation choke boundary comprise different heights.

8. The device of claim 1, wherein the channels between adjacent ridges of the isolation choke boundary are between 18.8 mm and 9.4 mm deep.

9. The device of claim 1, wherein ridges of the isolation choke boundary are arranged along a sinusoidal curve.

10. The device of claim 1, wherein an outer diameter of the first reflector cuts into an outer diameter of the second reflector.

11. The device of claim 1, wherein an outer diameter of the first reflector is smaller than an outer diameter of the second reflector.

12. The device of claim 1, wherein the isolation choke boundary provides greater than 10 dB isolation between the first reflector and the second reflector.

13. The device of claim 1, wherein the isolation choke boundary overhangs an outer edge of the first reflector and an outer edge of the second reflector.

14. The device of claim 1, wherein the radio circuitry is configured for transmission of broadband radio-frequency signals between about 23 and about 25 GHz from the first reflector and for reception of broadband radio-frequency signals between about 23 and about 25 GHz from the second reflector.

15. A radio device for transmission of wireless signals, the device comprising:

a first parabolic reflector;

a second parabolic reflector;

a radio circuitry configured for transmission of radio-frequency signals from the first parabolic reflector and configured for reception of radio-frequency signals from the second parabolic reflector; and

an isolation choke boundary coupled between the first parabolic reflector and the second parabolic reflector, the isolation choke boundary comprising a plurality of ridges extending between the first and second parabolic reflectors, wherein the isolation choke boundary provides greater than 10 dB isolation between the first and the second parabolic reflectors.

16. The device of claim 15, wherein an overall isolation of radio frequency signals between the first and second parabolic reflectors including the isolation provided by the isolation choke boundary is greater than about 60 dB.

17. The device of claim 15, wherein the plurality of ridges comprises at least 10 ridges.

18. The device of claim 15, wherein the isolation choke boundary is mounted to an outer edge of the first parabolic reflector and an outer edge of the second parabolic reflector.

19. The device of claim 15, wherein a first subset of the ridges of the isolation choke boundary follow a curvature of the outer edge of the first parabolic reflector and a second subset of the ridges of the isolation choke boundary follow a curvature of the outer edge of the second parabolic reflector.

20. The device of claim 15, wherein the radio circuitry is configured for transmission of broadband radio-frequency signals between about 4 and about 8 GHz from the first parabolic reflector and for reception of broadband radio-frequency signals between about 4 and about 8 GHz from the second parabolic reflector.

21. The device of claim 15, wherein at least some of the ridges of the isolation choke boundary comprise different heights.

22. The device of claim 15, wherein the channels between adjacent ridges of the isolation choke boundary are between 18.8 mm and 9.4 mm deep.

23. The device of claim 15, wherein ridges of the isolation choke boundary are arranged along a sinusoidal curve.

24. The device of claim 15, wherein an outer diameter of the first parabolic reflector cuts into an outer diameter of the second parabolic reflector.

25. The device of claim 15, wherein an outer diameter of the first parabolic reflector is smaller than an outer diameter of the second parabolic reflector.

26. The device of claim 15, wherein the isolation choke boundary overhangs an outer edge of the first parabolic reflector and an outer edge of the second parabolic reflector.

27. The device of claim 15, wherein the radio circuitry is configured for transmission of broadband radio-frequency signals between about 23 and about 25 GHz from the first parabolic reflector and for reception of broadband radio-frequency signals between about 23 and about 25 GHz from the second parabolic reflector.

28. A radio device for transmission of wireless signals, the device comprising:

a first parabolic reflector comprising a transmitting reflector;

a second parabolic reflector comprising a receiving reflector;

a radio circuitry configured to transmit radio-frequency signals from the parabolic transmitting reflector and to receive radio-frequency signals from the parabolic receiving reflector; and

an isolation choke boundary between the parabolic transmitting reflector and the parabolic receiving reflector, wherein the isolation choke boundary comprises at least 10 ridges extending between the parabolic transmitting reflector and the parabolic receiving reflector, the ridges extending in the direction of an outer edge of the transmitting reflector or and outer edge of the receiving reflector.

29. The device of claim 28, wherein isolation choke boundary provides greater than 10 dB isolation between the first parabolic reflector and the second parabolic reflector.