Method and system of beamforming a broadband signal through a multiport network
View Patent ↗Aspects of a method and system for beamforming a broadband signal through a multipart network are provided. In this regard, a plurality of signals received via a plurality of antennas may be detected and a plurality of transmit signals may be generated, wherein a phase of at least one of the plurality of transmit signals is responsive to at least one of the detected phases of the received signals. Each of the generated plurality of transmit signals may be separately amplified to generate a plurality of amplified signals. A plurality of the amplified signals may be input to a plurality of first ports is of a multi-port network, wherein at least one second port of the multi-port network may be responsive to signals input to at least two of the plurality of first ports.
1. A method comprising:
detecting a received phase difference between two of a plurality of signals received via a plurality of antennas;
generating a plurality of transmit signals, wherein a transmitted phase difference between two of the plurality of transmit signals is set based on the received phase difference;
separately amplifying each of the generated plurality of transmit signals to generate a plurality of amplified signals; and
transmitting the plurality of amplified signals via the plurality of antennas.
2. The method according to claim 1 , wherein the generating a plurality of transmit signals includes setting the transmitted phase difference to be a negative of the received phase difference.
3. The method according to claim 2 , wherein the received phase difference is detected over a first time interval, the transmitted phase difference is set over a second time interval, and the first time interval and the second time interval are proximate to one another in time.
4. The method according to claim 2 , wherein the setting the transmitted phase difference includes using weighting functions.
5. The method according to claim 1 , wherein the transmitting the plurality of amplified signals includes forwarding the plurality of amplified signals through a multi-port network prior to the plurality of antennas.
6. The method according to claim 5 , wherein the detecting a received phase difference between two of a plurality of signals received via a plurality of antennas includes receiving the plurality of signals via the multi-port network.
7. The method according to claim 1 , further comprising:
determining at least one of a phase and an amplitude of one of the plurality of amplified signals by measuring a corresponding signal from a directional coupler in communication with a respective one of the plurality of antennas.
8. The method according to claim 1 , wherein the detecting a received phase difference further includes:
using one or more calibration signals applied to two directional couplers, introduced into signal paths associated with the two received signals.
9. The method according to claim 1 , wherein the generating a plurality of transmit signals is further generated based on producing a desired array gain at a remote communications system configured to receive the plurality of transmit signals.
10. The method according to claim 1 , wherein the generating a plurality of transmit signals is further generated based on producing a desired signal-to-noise ratio (SNR) at a remote communications system configured to receive the plurality of transmit signals.
11. A system, comprising:
one or more circuits and/or processors for use in a communication device, the one or more circuits and/or processors being configured to:
detect a received phase difference between two of a plurality of signals received via a plurality of antennas;
generate a plurality of transmit signals, wherein a transmitted phase difference between two of the plurality of transmit signals is determined based on the received phase difference;
separately amplify each of the generated plurality of transmit signals to generate a plurality of amplified signals; and
transmit the plurality of amplified signals via the plurality of antennas.
12. The system according to claim 11 , wherein the transmitted phase difference is set to be a negative of the received phase difference.
13. The system according to claim 12 , wherein the received phase difference is detected over a first time interval, the transmitted phase difference is set over a second time interval, and the first time interval and the second time interval are proximate to one another in time.
14. The system according to claim 12 , wherein the one or more circuits and/or processors are further configured to set the transmitted phase difference using weighting functions.
15. The system according to claim 11 , further comprising:
a multi-port network coupled to the plurality of antennas through which the plurality of amplified signals are forwarded to the plurality of antennas.
16. The system according to claim 15 , wherein the received plurality of signals pass through the multi-port network.
17. The system according to claim 11 , wherein the one or more circuits and/or processors are further configured to:
determine at least one of a phase and an amplitude of one of the plurality of amplified signals by measuring a corresponding signal from a directional coupler in communication with a respective one of the plurality of antennas.
18. The system according to claim 11 , wherein the one or more circuits and/or processors are further configured to:
detect the received phase difference by using one or more calibration signals applied to two directional couplers introduced into signal paths associated with the two received signals.
19. The system according to claim 11 , wherein the one or more circuits and/or processors are further configured to:
generate the plurality of transmit signals to provide a desired array gain at a remote communications system that is configured to receive the plurality of transmit signals.
20. The system according to claim 11 , wherein the one or more circuits and/or processors are further configured to:
generate a plurality of transmit signals to provide a desired signal-to-noise ratio (SNR) at a remote communications system configured to receive the plurality of transmit signals.