Combined microwave parallel amplifier- RF attenuator/modulator
First Claim
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1. A parallel microwave amplifier comprising:
- power-dividing matrix means with N input ports and N intermediate output ports where N is an integer greater than 1 for providing N intermediate output signals;
power-combining matrix means with N intermediate input ports and N output ports for accepting N intermediate input signals;
N amplification channels, interconnecting each of said intermediate output ports with a different one of said intermediate input ports, for connecting said power-dividing matrix with said power-combining matrix in a back-to-back configuration, wherein each of said amplification channels includes a phase-shifter, an attenuator, and an amplifier connected in series.
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Abstract
A parallel channel microwave amplifier comprising a plurality of amplificon channels interconnecting a power-dividing matrix and a power-combining matrix. Each amplification channel includes a phase shifter, an attenuator and a power amplifier connected in series. The device functions as a combination of amplifier and an r.f. attenuator/modulator.
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Citations
17 Claims
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1. A parallel microwave amplifier comprising:
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power-dividing matrix means with N input ports and N intermediate output ports where N is an integer greater than 1 for providing N intermediate output signals; power-combining matrix means with N intermediate input ports and N output ports for accepting N intermediate input signals; N amplification channels, interconnecting each of said intermediate output ports with a different one of said intermediate input ports, for connecting said power-dividing matrix with said power-combining matrix in a back-to-back configuration, wherein each of said amplification channels includes a phase-shifter, an attenuator, and an amplifier connected in series. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A parallel microwave amplifier comprising:
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a power-dividing matrix with N input ports and N intermediate output ports for providing N intermediate output signals where N is an even integer greater than or equal to 2, said power-dividing matrix including N/2 waveguide magic tees; a power-combining matrix with N intermediate input ports and N output ports for accepting N intermediate input signals, said power combining matrix including N/2 waveguide magic tees; and N amplification channels, interconnecting each of said intermediate output ports with one of said intermediate input ports, for connecting said power-dividing matrix with said power combining matrix, wherein each amplification channel includes a phase-shifter, an attenuator, and an amplifier connected in series. - View Dependent Claims (8, 9, 10)
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11. A parallel microwave amplifier comprising:
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a pair of input waveguide magic tees with four input ports, said input magic tees interconnected to form a power dividing matrix with four intermediate output ports; a pair of output waveguide magic tees with four output ports, said output magic tees interconnected to form a power dividing matrix with four intermediate input ports; and four amplification channels, each channel interconnecting one output port with an intermediate input port, and with each of said amplification channels including a phase shifter, an attenuator and an amplifier connected in series. - View Dependent Claims (12, 13, 14)
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15. A method for controlling the amplitude of a microwave signal at an output port of a power-combining matrix interconnected with a power-dividing matrix by a plurality of amplification channels, where each amplification channel includes a phase shifter, an attenuator and an amplifier, said method comprising the steps of:
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setting the gain Ti of each of said amplifiers to a predetermined value, adjusting the attenuation factor of Mi each attenuator so that the product Mi Ti in each of said amplification channel is equal to a predetermined value; and adjusting the phase, θ
i of each phase shifter so that the phase shift, β
i, in each amplification channel is equal to a predetermined value. - View Dependent Claims (16, 17)
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Specification
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Current Assigneethe united states of america as represented by the secretary of the navy
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Original Assigneethe united states of america as represented by the secretary of the navy
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InventorsReuss, Max L. Jr.
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Primary Examiner(s)Mullins, James B.
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Assistant Examiner(s)Wan, G.
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Application NumberUS06/467,430Time in Patent Office607 DaysField of Search330/53, 330/54, 330/56, 330/124 R, 330/286, 330/287US Class Current330/286CPC Class CodesH01Q 3/40 with phasing matrixH03F 3/602 Combinations of several amp...
