Systems and methods for combining signals from multiple active wireless receivers
First Claim
1. A system, comprising:
- a first receiving radio frequency unit comprising;
a first downconverter configured to downconvert a received signal from a first antenna to an intermediate frequency to create an intermediate frequency signal;
a phase comparator configured to mix the received signal and an oscillating signal from the first downconverter 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;
a phase adjuster configured to alter the phase of the intermediate frequency signal based on the phase control signal from the phase comparator;
a second downconverter configured to downconvert the phase-shifted intermediate frequency signal to create an output signal; and
a waveguide configured to receive the received signal from the first antenna and provide the received signal to the first downconverter.
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Accused Products
Abstract
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.
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Citations
62 Claims
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1. A system, comprising:
a first receiving radio frequency unit comprising; a first downconverter configured to downconvert a received signal from a first antenna to an intermediate frequency to create an intermediate frequency signal; a phase comparator configured to mix the received signal and an oscillating signal from the first downconverter 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; a phase adjuster configured to alter the phase of the intermediate frequency signal based on the phase control signal from the phase comparator; a second downconverter configured to downconvert the phase-shifted intermediate frequency signal to create an output signal; and a waveguide configured to receive the received signal from the first antenna and provide the received signal to the first downconverter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system comprising:
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a first receiving radio frequency unit configured to compare a phase of a received signal from a first antenna to a predetermined phase value, and to adjust the phase of the received signal from the first antenna to generate a first phase-adjusted signal; a second receiving radio frequency unit configured to compare a phase of a received signal from a second antenna to the predetermined phase value, and to adjust the phase of the received 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; wherein the first and second receiving radio frequency units further comprise a first and second waveguide, respectively, the first and second waveguides configured to receive the received signal from the first and second antenna, respectively, prior to comparison of the received signals to the predetermined phase value. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method comprising:
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comparing, by a first receiving radio frequency unit, a phase of a received signal from a first antenna to a predetermined phase value; adjusting, by the first receiving radio frequency unit, the phase of the received signal from the first antenna to generate a first phase-adjusted signal; comparing, by a second receiving radio frequency unit, a phase of a received signal from a second antenna to the predetermined phase value; adjusting, by the second receiving radio frequency unit, the phase of the received signal from the second antenna to generate a second phase-adjusted signal; combining the first and second phase-adjusted signals, the phase of the first and second phase-adjusted signals being substantially similar; propagating the received signal from the first antenna through a first waveguide; filtering the received signal from the first antenna with a first waveguide filter prior to comparing the phase of the received signal from the first antenna to the predetermined phase value; propagating the received signal from the second antenna through a second waveguide; and filtering the received signal from the second antenna with a second waveguide filter prior to comparing the phase of the received signal from the second antenna to the predetermined phase value. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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32. A system, comprising:
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a first receiving radio frequency unit comprising; a first downconverter configured to downconvert a received signal from a first antenna to an intermediate frequency to create an intermediate frequency signal; a phase comparator configured to mix the received signal and an oscillating signal from the first downconverter 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; a phase adjuster configured to alter the phase of the intermediate frequency signal based on the phase control signal from the phase comparator; and a second downconverter configured to downconvert the phase-shifted intermediate frequency signal to create an output signal; wherein the received signal is received from a diplexer which is coupled to the first antenna. - View Dependent Claims (33, 34, 35, 36)
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37. A system, comprising:
a first receiving radio frequency unit comprising; a first downconverter configured to downconvert a received signal from a first antenna to an intermediate frequency to create an intermediate frequency signal; a phase comparator configured to mix the received signal and an oscillating signal from the first downconverter 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; a phase adjuster configured to alter the phase of the intermediate frequency signal based on the phase control signal from the phase comparator; a second downconverter configured to downconvert the phase-shifted intermediate frequency signal to create an output signal; and a second receiving radio frequency unit configured to receive a signal from a second antenna, the second receiving radio frequency unit configured to alter a phase of the received signal from the second antenna to a phase that is substantially similar to the altered phase of the intermediate frequency signal of the first receiving radio frequency unit. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45)
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46. A system comprising:
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a first receiving radio frequency unit configured to compare a phase of a received signal from a first antenna to a predetermined phase value, and to adjust the phase of the received signal from the first antenna to generate a first phase-adjusted signal; a second receiving radio frequency unit configured to compare a phase of a received signal from a second antenna to the predetermined phase value, and to adjust the phase of the received 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; wherein the first receiving radio frequency unit is configured to downconvert the received signal from the first antenna to generate a first downconverted signal and the second receiving radio frequency unit is configured to downconvert the received signal from the second antenna to generate a second downconverted signal. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54)
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55. A method comprising:
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comparing, by a first receiving radio frequency unit, a phase of a received signal from a first antenna to a predetermined phase value; adjusting, by the first receiving radio frequency unit, the phase of the received signal from the first antenna to generate a first phase-adjusted signal; comparing, by a second receiving radio frequency unit, a phase of a received signal from a second antenna to the predetermined phase value; adjusting, by the second receiving radio frequency unit, the phase of the received signal from the second antenna to generate a second phase-adjusted signal; combining the first and second phase-adjusted signals, the phase of the first and second phase-adjusted signals being substantially similar; and downconverting, by the first receiving radio frequency unit, the received signal from the first antenna to generate a first downconverted signal and downconverting, by the second receiving radio frequency unit, the received signal from the second antenna to generate a second downconverted signal. - View Dependent Claims (56, 57, 58, 59, 60, 61, 62)
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Specification