Multi-beam active phased array architecture
First Claim
1. An active antenna polarizer configured to transmit an RF signal to a radiating element, the active antenna polarizer comprising:
- an active splitter configured to receive an RF input signal, and wherein the active splitter divides the RF input signal into a first RF intermediate signal and a second RF intermediate signal;
a first vector generator configured to receive, from the active splitter, and adjust the phase of the first RF intermediate signal; and
a second vector generator in parallel with the first vector generator, wherein the second vector generator is configured to receive, from the active splitter, and adjust the phase of the second RF intermediate signal;
wherein the first vector generator and the second vector generator individually comprise a first quadrant select in parallel with a second quadrant select and a first variable gain amplifier in parallel with a second variable gain amplifier.
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Accused Products
Abstract
In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signals are received and combined into at least one receive beam output. In a transmit embodiment, at least one transmit beam input is divided and transmitted through multiple radiating elements. In an exemplary embodiment, the phased array antenna provides multi-beam formation over multiple operating frequency bands. The wideband nature of the active components allows for operation over multiple frequency bands simultaneously. Furthermore, the antenna polarization may be static or dynamically controlled at the subarray or radiating element level.
319 Citations
18 Claims
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1. An active antenna polarizer configured to transmit an RF signal to a radiating element, the active antenna polarizer comprising:
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an active splitter configured to receive an RF input signal, and wherein the active splitter divides the RF input signal into a first RF intermediate signal and a second RF intermediate signal; a first vector generator configured to receive, from the active splitter, and adjust the phase of the first RF intermediate signal; and a second vector generator in parallel with the first vector generator, wherein the second vector generator is configured to receive, from the active splitter, and adjust the phase of the second RF intermediate signal; wherein the first vector generator and the second vector generator individually comprise a first quadrant select in parallel with a second quadrant select and a first variable gain amplifier in parallel with a second variable gain amplifier. - View Dependent Claims (2, 3, 4, 5)
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6. An active antenna polarizer configured to receive an RF signal from a radiating element, the active antenna polarizer comprising:
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a first vector generator in parallel with a second vector generator, wherein at least one of the first vector generator and the second vector generator is configured to receive at least one RF input signal from the radiating element; wherein the at least one of the first vector generator and the second vector generator is configured to adjust the phase of the at least one RF input signal and generate at least one intermediate RF signal, wherein the first vector generator and the second vector generator individually comprise a first quadrant select in parallel with a second quadrant select and a first variable gain amplifier in parallel with a second variable gain amplifier; and an active power combiner configured to receive and combine the at least one intermediate RF signal from the at least one of the first vector generator and the second vector generator, and wherein the active power combiner generates an RF output signal. - View Dependent Claims (7, 8, 9, 10)
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11. A multiple radiating element transmitter circuit comprising:
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at least two subcircuits individually in communication with at least two radiating elements; a network of active splitters configured to divide at least one input beam and communicate the divided input beam to the at least two subcircuits; and wherein each of the at least two subcircuits comprises at least one vector generator having a first quadrant select in parallel with a second quadrant select and a first variable gain amplifier in parallel with a second variable gain amplifier, and wherein each of the at least two subcircuits is configured to perform polarization tracking and beam steering, and wherein each of the at least two subcircuits communicate a signal to the respective at least two radiating elements for transmission. - View Dependent Claims (12, 13)
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14. A multiple radiating element receiver circuit comprising:
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at least two subcircuits individually in communication with at least two radiating elements; and a network of active combiners configured to receive intermediate signals from the at least two subcircuits and combine the intermediate signals into at least one output beam; wherein each of the at least two subcircuits comprises at least one vector generator having a first quadrant select in parallel with a second quadrant select and a first variable gain amplifier in parallel with a second variable gain amplifier, and wherein each of the at least two subcircuits is configured to perform polarization tracking and beam steering on a signal received from the respective at least two radiating elements. - View Dependent Claims (15, 16)
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17. A multiple radiating element transmitter circuit comprising:
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at least two subcircuits individually in communication with at least two radiating elements; a network of active splitters configured to divide at least one input beam and communicate the divided input beam to the at least two subcircuits; and wherein each of the at least two subcircuits is configured to perform polarization tracking and beam steering, and wherein each of the at least two subcircuits communicate a signal to the respective at least two radiating elements for transmission; and wherein the multiple radiating element transmitter circuit is configured to transmit two beams, wherein the at least two subcircuits individually comprise; a first pair of vector generators in parallel configured to individually receive an input signal from the network of active splitters and perform beam steering on the input signal; an active power combiner configured to receive and combine two signals from the first pair of vector generators, and wherein the active power combiner generates a combined output signal; an active power splitter configured to receive the combined output signal and generate a first subcircuit signal and a second subcircuit signal; and a second pair of vector generators in parallel configured to receive the first subcircuit signal and the second subcircuit signal respectively, and wherein the second pair of vector generators are configured to perform polarization tracking.
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18. A multiple radiating element receiver circuit comprising:
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at least two subcircuits individually in communication with at least two radiating elements; and a network of active combiners configured to receive intermediate signals from the at least two subcircuits and combine the intermediate signals into at least one output beam; wherein each of the at least two subcircuits is configured to perform polarization tracking and beam steering on a signal received from the respective at least two radiating elements; and wherein the multiple radiating element receiver circuit is configured to form two beams, wherein the at least two subcircuits individually comprise; a first pair of vector generators in parallel configured to individually receive a first RF input signal and a second RF input signal from the respective at least two radiating elements, and wherein the first pair of vector generators are configured to perform polarization tracking on the first and second RF input signals; an active power combiner configured to receive and combine the first and second RF input signals from the first pair of vector generators, and wherein the active power combiner generates a combined output signal; an active power splitter configured to receive the combined output signal and generate a first subcircuit signal and a second subcircuit signal; and a second pair of vector generators in parallel configured to receive the first subcircuit signal and the second subcircuit signal respectively, and wherein the second pair of vector generators are configured to perform beam steering.
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Specification