SYSTEMS AND METHODS FOR COMBINING SIGNALS FROM MULTIPLE ACTIVE WIRELESS RECEIVERS

摘要

Systems and methods for combining signals from multiple active wireless receivers are discussed herein. An exemplary system comprises a first downconverter, a phase comparator, a phase adjuster, and a second downconverter. The first downconverter may be configured to downconvert a received signal from a first antenna to an intermediate frequency to create an intermediate frequency signal. The phase comparator may be configured to mix the received signal and a downconverted signal to create a mixed signal, compare a phase of the mixed signal to a predetermined phase, and generate a phase control signal based on the comparison, the downconverted signal being associated with the received signal from the first antenna. The phase adjuster may be configured to alter the phase of the intermediate frequency signal based on the phase control signal. The second downconverter may be configured to downconvert the phase-shifted intermediate frequency signal to create an output signal.

主权项

1. A system comprising:
a first receiving radio frequency unit configured to compare a phase of a received first signal from a first antenna to a predetermined phase value, and to adjust the phase of the received first signal from the first antenna to generate a first phase-adjusted signal; a second receiving radio frequency unit configured to receive the predetermined phase value from the first receiving radio frequency unit, to compare a phase of a received second signal from a second antenna to the predetermined phase value received from the first receiving radio frequency unit, and to adjust the phase of the received second signal from the second antenna to generate a second phase-adjusted signal; and a signal combiner configured to combine the first and second phase-adjusted signals, the phase of the first and second phase-adjusted signals being substantially similar.