FEEDBACK CANCELLATION ON MULTIBAND BOOSTER

• US 20190312630A1
• Filed: 04/03/2019
• Published: 10/10/2019
• Est. Priority Date: 04/10/2018
• Status: Active Grant

• Current Assignee: Wilson Electronics LLC (Wilson Electronics Holdings LLC)
• Original Assignee: Wilson Electronics LLC (Wilson Electronics Holdings LLC)
• Inventors: Ashworth, Christopher Ken, Anderson, Dale Robert, Patel, Ilesh V., Raggio, Glen
• Granted Patent: US 10,879,995 B2
• Time in Patent Office: Days
• CPC Class Codes: H01Q 3/2605 Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
• CPC Class Codes: H04B 1/525 with means for reducing leakage of transmitter signal into the receiver
• CPC Class Codes: H04B 7/15585 by interference cancellation

Abstract

A technology is described for feedback cancellation in a multiband booster. The repeater can comprise: a server antenna port; a donor antenna port; a first direction amplification and filtering path coupled between the server antenna port and the donor antenna port; a second direction amplification and filtering path coupled between the server antenna port and the donor antenna port; a first-direction two-antenna feedback cancellation circuit coupled between the server antenna port and the donor antenna port to reduce antenna-to-antenna feedback for a single band in a first direction between a donor antenna and a server antenna; and a second-direction two-antenna feedback cancellation circuit coupled between the server antenna port and the donor antenna port to reduce antenna-to-antenna feedback for the single band in a second direction between the donor antenna and the server antenna.

Claims

1. A repeater comprising:

a server antenna port;

a donor antenna port;

a first direction amplification and filtering path coupled between the server antenna port and the donor antenna port;

a second direction amplification and filtering path coupled between the server antenna port and the donor antenna port;

a first-direction two-antenna radio frequency (RF) feedback cancellation circuit coupled between the server antenna port and the donor antenna port to reduce antenna-to-antenna feedback for a single band in a first direction between a donor antenna and a server antenna; and

a second-direction two-antenna RF feedback cancellation circuit coupled between the server antenna port and the donor antenna port to reduce antenna-to-antenna feedback for the single band in a second direction between the donor antenna and the server antenna.

2. The repeater of claim 1, further comprising:

a first duplexer coupled between the server antenna port and the first amplification path and the second amplification path; and

a second duplexer coupled between the donor antenna port and the first amplification path and the second amplification path.

3. The repeater of claim 2,

the first-direction two-antenna RF feedback cancellation circuit is coupled between the first duplexer and the second duplexer to reduce antenna-to-antenna feedback in the first direction between the first duplexer and the second duplexer;

and

the second-direction two-antenna RF feedback cancellation circuit is coupled between the first duplexer and the second duplexer to reduce antenna-to-antenna feedback in the second direction between the first duplexer and the second duplexer.

4. The repeater of claim 1, further comprising:

a nth first direction amplification and filtering path coupled between the server antenna port and the donor antenna port, wherein n is an integer greater than 1; and

a mth second direction amplification and filtering path coupled between the server antenna port and the donor antenna port, wherein m is an integer greater than 1.

5. The repeater of claim 4, further comprising:

n additional first-direction two-antenna RF feedback cancellation circuit coupled between the server antenna port and the donor antenna port to reduce antenna-to-antenna feedback for each of n bands in a first direction between a donor antenna and a server antenna; and

m additional second-direction two-antenna RF feedback cancellation circuit coupled between the server antenna port and the donor antenna port to reduce antenna-to-antenna feedback for each of m bands in a second direction between the donor antenna and the server antenna.

6. The repeater of claim 3, further comprising:

n additional first-direction two-antenna RF feedback cancellation circuits coupled between the first duplexer and the second duplexer to reduce antenna-to-antenna feedback for each of n bands in a first direction between the first duplexer and the second duplexer; and

m additional second-direction two-antenna RF feedback cancellation circuits coupled between the first duplexer and the second duplexer to reduce antenna-to-antenna feedback for each of m bands in a second direction between the first duplexer and the second duplexer.

7. The repeater of claim 1, further comprising:

an additional first-direction two-antenna RF feedback cancellation circuit coupled between the server antenna port and the donor antenna port to reduce antenna-to-antenna feedback for an additional band in a first direction between a donor antenna and a server antenna, and

wherein the second-direction two-antenna RF feedback cancellation circuit coupled between the server antenna port and the donor antenna port is configured to reduce antenna-to-antenna feedback for multiple bands in a second direction between the donor antenna and the server antenna.

8. The repeater of claim 2, further comprising:

a first-direction low-noise amplifier and a first-direction power amplifier, wherein the first-direction two-antenna RF feedback cancellation circuit is configured to sample a first-direction signal at an output of the first-direction power amplifier and inject a first-direction cancellation signal at an output of the first-direction low-noise amplifier; and

a second-direction low-noise amplifier and a second-direction power amplifier, wherein the second-direction two-antenna RF feedback cancellation circuit is configured to sample a second-direction signal at an output of the second-direction power amplifier and inject a second-direction cancellation signal at an output of the second-direction low-noise amplifier.

9. The repeater of claim 2, further comprising:

a first-direction low-noise amplifier and a first-direction power amplifier, wherein the first-direction two-antenna RF feedback cancellation circuit is configured to sample a first-direction signal at an input of the first-direction power amplifier and inject a first-direction cancellation signal at an input of the first-direction low-noise amplifier or at an output of the first-direction low-noise amplifier; and

a second-direction low-noise amplifier and a second-direction power amplifier, wherein the second-direction two-antenna RF feedback cancellation circuit is configured to sample a second-direction signal at an input of the second-direction power amplifier and inject a second-direction cancellation signal at an input of the second-direction low-noise amplifier or at an output of the second-direction low-noise amplifier.

10. The repeater of claim 1, wherein the repeater is configured for one or more of frequency division duplex (FDD) signals or time division duplex (TDD) signals.

11. A repeater comprising:

a server antenna port;

a donor antenna port;

a first direction amplification and filtering path coupled between the server antenna port and the donor antenna port;

a second direction amplification and filtering path coupled between the server antenna port and the donor antenna port; and

a time division duplex (TDD) two-antenna radio frequency (RF) feedback cancellation circuit coupled between the server antenna port and the donor antenna port to reduce antenna-to-antenna feedback for a single band in a first direction or second direction between a donor antenna and a server antenna.

12. The repeater of claim 11, wherein the TDD two-antenna radio frequency (RF) feedback cancellation circuit is switchably coupled to the first direction amplification and filtering path and the second direction amplification and filtering path.

13-20. -20. (canceled)

21. A multiband repeater comprising:

a server antenna port;

a donor antenna port;

a first first-direction amplification and filtering path coupled between the server antenna port and the donor antenna port;

an nth first-direction amplification and filtering path coupled between the server antenna port and the donor antenna port, wherein n is an integer greater than 1;

a first second-direction amplification and filtering path coupled between the server antenna port and the donor antenna port;

an mth second-direction amplification and filtering path coupled between the server antenna port and the donor antenna port, wherein m is an integer greater than 1;

a first first-direction two-antenna radio frequency (RF) feedback cancellation circuit coupled between the server antenna port and the donor antenna port to reduce antenna-to-antenna feedback for a first first-direction band in a first direction between a donor antenna and a server antenna; and

a first second-direction two-antenna RF feedback cancellation circuit coupled between the server antenna port and the donor antenna port to reduce antenna-to-antenna feedback for a first second-direction band in a second direction between the donor antenna and the server antenna.

22. The multiband repeater of claim 21, further comprising:

an nth first-direction two-antenna radio frequency (RF) feedback cancellation circuit coupled between the server antenna port and the donor antenna port to reduce antenna-to-antenna feedback for an nth first-direction band in a first direction between a donor antenna and a server antenna; and

an mth second-direction two-antenna RF feedback cancellation circuit coupled between the server antenna port and the donor antenna port to reduce antenna-to-antenna feedback for a mth second-direction band in a second direction between the donor antenna and the server antenna.

23. The multiband repeater of claim 22, further comprising:

a first first-direction low noise amplifier (LNA) coupled between the first duplexer and the first first-direction two-antenna RF feedback cancellation circuit; and

a first first-direction power amplifier (PA) coupled between the second duplexer and the first first-direction LNA; and

wherein the first first-direction two-antenna RF feedback cancellation circuit is configured to sample a first-direction signal at an output of the first first-direction power amplifier and inject a first first-direction cancellation signal at an output of the first first-direction low-noise amplifier; and

a first second-direction low noise amplifier (LNA) coupled between the second duplexer and the first second-direction two-antenna RF feedback cancellation circuit; and

a first second-direction power amplifier (PA) coupled between the first duplexer and the first second-direction LNA; and

wherein the first second-direction two-antenna RF feedback cancellation circuit is configured to sample a first second-direction signal at an output of the first second-direction power amplifier and inject a first second-direction cancellation signal at an output of the first second-direction low-noise amplifier.

24. The multiband repeater of claim 23, further comprising:

an nth first-direction low noise amplifier (LNA) coupled between the first duplexer and an nth first-direction two-antenna RF feedback cancellation circuit;

an nth first-direction power amplifier (PA) coupled between the second duplexer and the nth first-direction LNA;

wherein an nth first-direction two-antenna RF feedback cancellation circuit is configured to sample an nth first-direction signal at an output of the nth first-direction power amplifier and inject an nth first-direction cancellation signal at an output of the nth first-direction low-noise amplifier;

an mth second-direction low noise amplifier (LNA) coupled between the second duplexer and an mth second-direction two-antenna RF feedback cancellation circuit; and

an mth second-direction power amplifier (PA) coupled between the first duplexer and the mth second-direction LNA;

wherein the mth second-direction two-antenna RF feedback cancellation circuit is configured to sample an mth second-direction signal at an output of the mth second-direction power amplifier and inject an mth second-direction cancellation signal at an output of the mth second-direction low-noise amplifier.

36. The multiband repeater of claim 21, further comprising:

a first multiplexer coupled between;

the server antenna port;

the first first-direction amplification and filtering path; and

the first second-direction amplification and filtering path; and

wherein the first first-direction two-antenna RF feedback cancellation circuit is coupled between the first multiplexer and a second multiplexer and further configured to reduce antenna-to-antenna feedback for n bands in the first direction between the donor antenna and the server antenna; and

the second multiplexer coupled between;

the donor antenna port;

the first first-direction amplification and filtering path; and

the first second-direction amplification and filtering path; and

wherein the first second-direction two-antenna RF feedback cancellation circuit is coupled between the first multiplexer and the second multiplexer and further configured to reduce antenna-to-antenna feedback for m bands in the second direction between the donor antenna and the server antenna.

37. The multiband repeater of claim 21, wherein:

n is equal to 2;

the nth first-direction amplification and filtering path coupled between the server antenna port and the donor antenna port comprises a second first-direction amplification and filtering path coupled between the server antenna port and the donor antenna port;

m is equal to 1; and

the multiband repeater further comprises;

a second first-direction two-antenna RF feedback cancellation circuit coupled between the server antenna port and the donor antenna port to reduce antenna-to-antenna feedback for a second first-direction band in the second first-direction amplification and filtering path; and

the first second-direction two-antenna RF feedback cancellation circuit is further configured to reduce antenna-to-antenna feedback for a second second-direction band in a second direction between the donor antenna and the server antenna.

38. The multiband repeater of claim 36, wherein:

the first first-direction band is a Third Generation Partnership Project (3GPP) long term evolution (LTE) frequency band 12 uplink signal;

the second first-direction band is a 3GPP LTE frequency band 13 uplink signal;

the first second-direction band is a 3GPP LTE frequency band 12 downlink signal; and

the second second-direction band is a 3GPP LTE frequency band 13 downlink signal.

39. The multiband repeater of claim 21, wherein:

one or more of the n first-direction amplification and filtering paths is configured to communicate two or more adjacent bands on a single path;

or

one or more of the m second-direction amplification and filtering paths is configured to communicate two or more adjacent bands on a single path; and

the two or more adjacent bands include Third Generation Partnership Project (3GPP) long term evolution (LTE) downlink band 12 and downlink band 13.

25-35. -35. (canceled)