Active antenna array with multiple amplifiers for a mobile communications network and method of providing DC voltage to at least one processing element

• US 8,423,028 B2
• Filed: 12/29/2009
• Issued: 04/16/2013
• Est. Priority Date: 12/29/2009
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: UBIDYNE, INC
• Inventors: Kenington, Peter, Weckerle, Martin, Neumann, Dirk
• Primary Examiner(s): Doan, Kiet
• Assistant Examiner(s): Vu, Michael T
• Application Number:
  US12/648,713
• Publication Number:
  US 20110159877A1
• Time in Patent Office: 1,204 Days
• Field of Search: 455561-5621
• US Class Current: 455/445
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 3/26 varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture H01Q3/12, H01Q3/22, H01Q3/24 take precedence
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/0671 using different delays between antennas

Abstract

The present disclosure teaches an active antenna array for a mobile communications network. The active antenna array comprises a plurality of antenna elements, a first port, a first DC voltage supply and at least one DC voltage extractor. The plurality of antenna elements relays at least first protocol radio signals. The first port is connected to at least one individual first protocol relay path. The first port relays a general first protocol receive signal to a first protocol link. The first DC voltage supply provides a first DC voltage to at least a portion of the first protocol link. The at least one DC voltage extractor, is located in the at least one individual first protocol relay path. The DC voltage extractor extracts at least one individual DC voltage to supply an at least one amplifier.

Claims

1. An active antenna array for a mobile communication network comprising:

a plurality of antenna elements for relaying at least first protocol radio signals wherein at least a subset of the plurality of antenna elements are further adapted to relay second protocol radio signals

at least one first port connected to at least one individual first protocol relay path;

the first port relaying a general first protocol receive signal to a first protocol link;

a first DC voltage supply providing a first DC voltage to at least a portion of the first protocol link;

at least one DC voltage extractor located in the at least one individual first protocol relay path, the DC voltage extractor being adapted to extract at least one individual DC voltage to supply at least one signal processing element located in the at least one individual first relay path;

at least one first splitter located in the at least one individual first protocol relay path, the at least one first splitter being adapted to forward at least one of the at least one individual first protocol receive signals and the at least one individual second protocol receive signal in a receive direction from the plurality of antenna elements to an at least one amplifier;

the at least one first splitter further being adapted to forward at least one individual first protocol transmit signal in a transmit direction; and

at least one second coupler adding at least one individual second protocol transmit signal to the at least one individual first protocol transmit signal.

2. The active antenna array according to the claim 1, further comprising a DC voltage adder coupling the first DC voltage to the portion of the first protocol link.

3. The active antenna array according to claim 1, wherein the at least one signal processing element is an amplifier.

4. The active antenna array according to claim 3, wherein at least one first coupler forwards the at least one individual second protocol receive signal to an at least one second protocol receiver.

5. The active antenna array according to claim 4, wherein the at least one first protocol transmit signal is generatable from the general first protocol transmit signal at the first port by applying at least one of a phase weighting, an amplitude weighting, or a delay to the general first protocol transmit signal;

and wherein the at least one individual second protocol transmit signal is generatable from the general second protocol transmit signal at a second port by applying at least one of a variable phase weighting, a variable amplitude weighting, or a variable delay to the general second protocol transmit signal.

6. The active antenna array according to claim 4, wherein the plurality of antenna elements is adapted for at least one of concurrently transmitting the at least one individual first protocol transmit signal and the at least one individual second protocol transmit signal or concurrently receiving the at least one individual first protocol receive signal and the at least one individual second protocol receive signal.

7. The active antenna array according to claim 1, wherein the signal processing element amplifies at least one of an at least one first protocol receive signal and an at least one second protocol receive signal.

8. The active antenna array according to claim 1, comprising at least one second splitter located in the at least one individual first protocol relay path for forwarding the first protocol transmit signal in a transmit direction to the first splitter.

9. The active antenna array according to claim 1, wherein the at least one of first splitter or the at least one second splitter are selected from the group consisting of a duplexer, a directional coupler, a circulator and a quadrature hybrid.

10. The active antenna array according to claim 1, comprising:

a second DC voltage supply adapted to provide the at least one individual voltage;

control means adapted to monitor at least one of the first DC voltage supply, the at least one individual DC voltage or the second DC voltage supply, and further adapted to switch between the first DC voltage supply, and the second DC voltage supply.

11. The active antenna array according to claim 1, wherein the at least one first port is further adapted to relay the general first protocol transmit signal to the individual ones of the first protocol relay paths;

and wherein the second port is adapted to provide the general second protocol receive signal and a general second protocol transmit signal.

12. The active antenna array according to claim 1, wherein the first protocol pertaining to the first protocol radio signals is selected from the group consisting of a GSM protocol and an UMTS protocol.

13. The active antenna array according to claim 1, wherein the second protocol pertaining to the second protocol radio signal is selected from the group consisting of an UMTS protocol, a third generation long term evolution radio protocol, a Freedom of Mobile Multimedia Access radio protocol, a wideband Code Division Multiple Access radio protocol and a worldwide interoperability for Microwave Access protocol .

14. The active antenna array according to claim 1, wherein the at least one second coupler forwards at least one of the at least one individual first protocol transmit signal or the at least one individual second protocol transmit signal to the first splitter.

15. The active antenna array according to claim 1, adapted to provide at least one of a variable phase weighting, a variable amplitude weighting, or a variable delay to the at least one individual second protocol receive signal forming the general second protocol receive signal by digital means.

16. The active antenna array according to claim 1, adapted to provide at least one of a phase weighting, an amplitude weighting or a delay to the at least one individual first protocol receive signal forming the general first protocol receive signal by analogue means.

17. A method of providing a DC voltage to at least one signal processing element of an active antenna array-for a mobile communications network, the method comprising:

providing a first DC voltage;

adding the first DC voltage to at least one portion of a first protocol relay path;

extracting at least one individual DC voltage from at least one individual first protocol relay path, the at least one individual DC voltage supplying at least one signal processing element located in the at least one individual first protocol relay path;

concurrently receiving at least one individual first protocol receive signal and at least one individual second protocol receive signal;

amplifying the at least one individual first protocol receive signal and the at least one individual second protocol receive signal;

forwarding the at least one individual first protocol receive signal and the at least one individual second protocol receive signal in a receive direction;

extracting the at least one individual first protocol receive signal;

extracting the at least one individual second protocol receive signal.

18. The method according to claim 17, the concurrently receiving further comprising:

forming a general first protocol receive signal from the at least one individual first protocol receive signal by applying at least one of a phase weighting, an amplitude weighting, or a delay to at least a selected one of the at least one individual first protocol receive signal by analogue means; and

forming a general second protocol receive signal from the at least one individual second protocol receive signal by applying at least one of a variable phase weighting, a variable amplitude weighting or a variable delay to the at least one individual second protocol receive signal by digital means.

19. The method according to claim 17, comprising:

concurrently transmitting at least one individual first protocol transmit signal and at least one individual second protocol transmit signal.

20. The method according to claim 19, the concurrently transmitting comprising:

generating the at least one individual first protocol transmit signal from a general first protocol transmit signal by applying at least one of a phase weighting, an amplitude weighting, or a delay to the general first protocol transmit signal by analogue means;

generating at least one individual second protocol transmit signal from a general second protocol transmit signal by applying a variable phase weighting, a variable amplitude weighting, or a variable delay to the general second protocol transmit signal by digital means;

forwarding the at least one individual first protocol transmit signal in a transmit direction; and

adding the at least one individual second protocol transmit signal to the at least one individual first protocol transmit signal.

21. The method according to claim 17, further comprising:

providing a second DC voltage adapted to provide the at least one individual DC voltage;

monitoring at least one of the first DC voltage, the second DC voltage or the at least one individual DC voltage; and

switching between the first DC voltage and the second DC voltage in response to the monitoring.

22. A computer program product comprising a computer usable non-transitory medium having control logic stored therein for causing a computer to manufacture an active antenna array for a mobile communications network, the active antenna array comprising:

a plurality of antenna elements for relaying at least first protocol radio signals;

at least one first port connected to at least one individual first protocol relay path;

the at least one first port relaying a general first protocol receive signal to a first protocol link;

a first DC voltage supply providing a first DC voltage to at least a portion of the first protocol link;

at least one DC voltage extractor located in the at least one individual first protocol relay path;

the DC voltage extractor being adapted to extract at least one individual DC voltage to supply an at least one processing element located in the at least one individual first protocol relay path

at least one first splitter located in the at least one individual first protocol relay path, the at least one first splitter being adapted to forward at least one of the at least one individual first protocol receive signals and the at least one individual second protocol receive signal in a receive direction from the plurality of antenna elements to an at least one amplifier;

the at least one first splitter further being adapted to forward at least one individual first protocol transmit signal in a transmit direction; and

at least one second coupler adding at least one individual second protocol transmit signal to the at least one individual first protocol transmit signal.

23. A computer program product comprising a computer usable non-transitory medium having control logic stored therein for causing a computer to execute a method of providing a DC voltage to at least one processing element of an active antenna array, the control logic comprising:

first computer readable program code means for causing the computer to provide a first DC voltage;

second computer readable program code means for causing the computer to add the first DC voltage to at least one portion of a first protocol relay path;

third computer readable program code means for causing the computer to extract at least one individual DC voltage from at least one individual first protocol relay path for supplying the at least one processing element

fourth computer readable program code means for causing the computer to forward at least one of the at least one individual first protocol receive signals and one of the individual second protocol receive signal in a receive direction from the plurality of antenna elements to an at least one amplifier;

fifth computer readable program code means for causing the computer to forward at least one individual first protocol transmit signal in a transmit direction; and

sixth computer readable program code for causing the computer to add at least one individual second protocol transmit signal to the at least one individual first protocol transmit signal.

24. A chipset for controlling an active antenna array for a mobile communications network, the chipset comprising:

a first port connected to at least one individual first protocol relay path;

the first port relaying a general first protocol receive signal to a first protocol link;

a first DC voltage supply providing a first DC voltage to at least a portion of the first protocol link;

at least one DC voltage extractor located in the at least one individual first protocol relay path;

the DC voltage extractor being adapted to extract at least one individual DC voltage to supply an at least one signal processing element

at least one first splitter located in the at least one individual first protocol relay path, the at least one first splitter being adapted to forward at least one of the at least one individual first protocol receive signals and the at least one individual second protocol receive signal in a receive direction from the plurality of antenna elements to an at least one amplifier;

the at least one first splitter further being adapted to forward at least one individual first protocol transmit signal in a transmit direction; and

at least one second coupler adding at least one individual second protocol transmit signal to the at least one individual first protocol transmit signal.