Common module combiner/active array multicarrier approach without linearization loops
First Claim
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1. A multiple-carrier wave system, comprising:
- a collector including a focal point;
a first antenna array sending a first carrier wave signal, said first antenna array including a first path and a second path wherein said first carrier wave signal is distributed into a first distributed signal sent by said first path of said first antenna array and a second distributed signal sent by said second path of said first antenna array such that said first and second distributed signals of said first carrier wave signal arrive at said focal point of said collector in modulo 2π
radian phase coherence with respect to each other; and
a second antenna array sending a second carrier wave signal, said second antenna array including a first path and a second path wherein said second carrier wave signal is distributed into a first distributed signal sent by said first path of said second antenna array and a second distributed signal sent by said second path of said second antenna array such that said first and second distributed signals of said second carrier wave signal arrive at said focal point of said collector in modulo 2π
radian phase coherence with respect to each other.
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Abstract
In a multiple-carrier modulation system, each carrier signal of the multiple carrier system is distributed, recombined, optionally band pass filtered, and transmitted to downlink devices such as cellular phones. The distribution and recombination is performed by either a space-fed technique or through the use of a Rotman lens fed in reverse. The phases of the distributed signals are controlled to be coherent when recombined. Also, a capacity of the multiple carrier system is enhanced through polarization of the carriers in a space-fed version of the system.
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Citations
30 Claims
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1. A multiple-carrier wave system, comprising:
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a collector including a focal point;
a first antenna array sending a first carrier wave signal, said first antenna array including a first path and a second path wherein said first carrier wave signal is distributed into a first distributed signal sent by said first path of said first antenna array and a second distributed signal sent by said second path of said first antenna array such that said first and second distributed signals of said first carrier wave signal arrive at said focal point of said collector in modulo 2π
radian phase coherence with respect to each other; and
a second antenna array sending a second carrier wave signal, said second antenna array including a first path and a second path wherein said second carrier wave signal is distributed into a first distributed signal sent by said first path of said second antenna array and a second distributed signal sent by said second path of said second antenna array such that said first and second distributed signals of said second carrier wave signal arrive at said focal point of said collector in modulo 2π
radian phase coherence with respect to each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A multiple-carrier wave system, comprising:
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a collector including a focal point;
a first antenna array sending a first carrier wave signal, said first antenna array including a first path and a second path wherein said first carrier wave signal is distributed into a first distributed signal sent by said first path of said first antenna array and a second distributed signal sent by said second path of said first antenna array such that said first and second distributed signals of said first carrier wave signal are polarized in a first orientation and arrive at said focal point of said collector in modulo 2π
radian phase coherence with respect to each other;
a second antenna array sending a second carrier wave signal, said second antenna array including a first path and a second path wherein said second carrier wave signal is distributed into a first distributed signal sent by said first path of said second antenna array and a second distributed signal sent by said second path of said second antenna array such that said first and second distributed signals of said second carrier wave signal are polarized in a second orientation and arrive at said focal point of said collector in modulo 2π
radian phase coherence with respect to each other; and
an orthomode transducer (OMT) extracting from said collector said first and second carrier wave signals polarized in said first and second orientations, respectively. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 30)
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18. A carrier wave system, comprising:
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a reverse-fed Rotman lens including a set of array ports and a set of beam ports; and
a first antenna array sending a first carrier wave signal, said first antenna array including a first path and a second path wherein said first carrier wave signal is distributed into a first distributed signal sent by said first path of said first antenna array and a second distributed signal sent by said second path of said first antenna array, said first and second paths of said first antenna array being connected to first and second array ports of said set of array ports such that a combined energy of said first and second distributed signals of said first carrier wave signal is a maximum at a first beam port.
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Specification