Granted Patent B2

US 12,562,502 · App. 18/357,319 · Granted Feb 24, 2026

Inventors: Amr Abdelmonem (Northbrook, IL); Pablo Tacconi (Arlington, TX)

Assignee: ISCO International, LLC

H01Q21/245H01Q1/246H01Q9/16H01Q21/24H01Q21/26

Abstract

Claims (28)

1 . A method, comprising:

obtaining data regarding interference originating from one or more interference sources, wherein the interference has a polarization orientation; and

applying an algorithm for rotating polarizations of first radio frequency (RF) signals and second RF signals relating to crossed-dipole radiating elements of an antenna system, the rotating being performed to facilitate mitigation of the interference by reducing interference imposed on the first RF signals by the interference or increasing interference imposed on the second RF signals by the interference.

2 . The method of claim 1 , wherein the applying the algorithm for rotating is performed for transmit (Tx) signals, receive (Rx) signals, or both.

3 . The method of claim 1 , wherein the applying the algorithm for rotating is performed in a same or a different manner for transmit (Tx) signals and receive (Rx) signals.

4 . The method of claim 1 , wherein the applying the algorithm for rotating polarizations of the first RF signals and the second RF signals is performed by way of digital signal processing of digital data associated with the first RF signals and the second RF signals.

5 . The method of claim 1 , wherein the applying the algorithm for rotating polarizations of the first RF signals and the second RF signals is performed by way of analog signal processing of analog signals associated with the first RF signals and the second RF signals.

6 . The method of claim 1 , wherein the applying the algorithm for rotating is performed in a remote radio unit (RRU), a remote radio head (RRH), a Common Public Radio Interface (CPRI) device, a baseband unit, or another device in a radio access network (RAN), and wherein the interference comprises passive intermodulation (PIM).

7 . An apparatus, comprising:

a processing system associated with an antenna system and configured to perform operations, comprising:

receiving data regarding interference, wherein the interference has a polarization orientation; and

applying an algorithm for manipulating first radio frequency (RF) signals and second RF signals to rotate polarizations thereof to facilitate mitigation or avoidance of the interference by reducing interference imposed on the first RF signals by the interference or increasing interference imposed on the second RF signals by the interference, the first RF signals and the second RF signals relating to crossed-dipole radiating elements of the antenna system.

8 . The apparatus of claim 7 , wherein the applying the algorithm for manipulating is performed for transmit (Tx) signals, receive (Rx) signals, or both, and wherein the apparatus is implemented in a remote radio unit (RRU), a remote radio head (RRH), a Common Public Radio Interface (CPRI) device, or a baseband unit.

9 . The apparatus of claim 7 , wherein the applying the algorithm is performed by way of digital signal processing of digital data associated with the first RF signals and the second RF signals.

10 . The apparatus of claim 7 , wherein the applying the algorithm is performed by way of analog signal processing of analog signals associated with the first RF signals and the second RF signals.

11 . The apparatus of claim 7 , wherein the applying the algorithm for manipulating is performed without requiring any physical rotation of the crossed-dipole radiating elements or a housing of the antenna system.

12 . The apparatus of claim 7 , wherein the first RF signals and the second RF signals include orthogonal RF signals, and wherein the applying the algorithm for manipulating involves projection of the orthogonal RF signals in a different set of axes.

13 . The apparatus of claim 7 , wherein the interference comprises passive intermodulation (PIM).

14 . A device, comprising:

a processing system configured to:

detect interference originating from one or more interference sources, wherein the interference has a polarization orientation; and

apply an algorithm to perform virtual rotation of crossed-dipole radiating elements of an antenna system by rotating polarizations of first radio frequency (RF) signals and second RF signals relating to the crossed-dipole radiating elements, the rotating the polarizations being performed to facilitate mitigation of the interference by reducing interference imposed on the first RF signals by the interference or increasing interference imposed on the second RF signals by the interference.

15 . The device of claim 14 , wherein the first RF signals and the second RF signals include orthogonal RF signals, and wherein the rotating the polarizations involves projection of the orthogonal RF signals in a different set of axes.

16 . The device of claim 14 , wherein the rotating the polarizations is performed for transmit (Tx) signals, receive (Rx) signals, or both, and where the device is implemented in a remote radio unit (RRU), a remote radio head (RRH), or a baseband unit.

17 . The device of claim 14 , wherein the rotating the polarizations is performed without requiring any movement of the crossed-dipole radiating elements or a housing of the antenna system.

18 . The device of claim 14 , wherein applying the algorithm is performed by way of digital signal processing of digital data associated with the first RF signals and the second RF signals.

19 . The device of claim 14 , wherein applying the algorithm is performed by way of analog signal processing of analog signals associated with the first RF signals and the second RF signals.

20 . The device of claim 14 , wherein the interference comprises passive intermodulation (PIM).

Assignments (1)

Continuity (3)

References Cited (394)