Methods and apparatus for receiving radio frequency signals
First Claim
1. A radio frequency signal receiving structure, comprising:
- a waveguide component for receiving signals having at least a first frequency range and a second frequency range;
a first transmission line for carrying signals within said second frequency range in a first plane;
a second transmission line for carrying signals within said first frequency range in a second plane parallel to said first plane;
a signal splitting component comprising;
first circuitry associated with said first transmission line for producing a substantially low impedance at said first frequency range; and
second circuitry associated with said second transmission line for producing a substantially low impedance at said second frequency range;
wherein said first circuitry is in said first plane and said second circuitry is in said second plane; and
a transition component for transferring said signals between said waveguide component and said first and second transmission lines;
wherein said signal receiving structure is configured to transfer signals within said first frequency range through said second transmission line with substantially low loss and substantially high impedance matching, and to transfer signals within said second frequency range through said first transmission line with substantially low loss and substantially high impedance matching.
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Abstract
Radio frequency signals having a plurality of frequency ranges are received and coupled to a plurality of transmission lines, each of the plurality of transmission lines being formed in a corresponding plurality of generally parallel planes. Circuitry is formed for each of the plurality of transmission lines to define substantially low impedances for all of the plurality of frequency ranges except for a frequency range or ranges to be carried by the corresponding transmission line. Signals are coupled to the plurality of transmission lines so that signals with the plurality of frequency ranges are received and distributed with substantially decreased reflection and substantially high impedance matching by the plurality of transmission lines.
29 Citations
25 Claims
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1. A radio frequency signal receiving structure, comprising:
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a waveguide component for receiving signals having at least a first frequency range and a second frequency range; a first transmission line for carrying signals within said second frequency range in a first plane; a second transmission line for carrying signals within said first frequency range in a second plane parallel to said first plane; a signal splitting component comprising; first circuitry associated with said first transmission line for producing a substantially low impedance at said first frequency range; and second circuitry associated with said second transmission line for producing a substantially low impedance at said second frequency range; wherein said first circuitry is in said first plane and said second circuitry is in said second plane; and a transition component for transferring said signals between said waveguide component and said first and second transmission lines; wherein said signal receiving structure is configured to transfer signals within said first frequency range through said second transmission line with substantially low loss and substantially high impedance matching, and to transfer signals within said second frequency range through said first transmission line with substantially low loss and substantially high impedance matching. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for receiving radio frequency signals, comprising:
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receiving signals having at least a first frequency range and a second frequency range using a waveguide component; producing a substantially low impedance at said first frequency range in a first transmission line in a first plane; producing a substantially low impedance at said second frequency range in a second transmission line in a second plane, said first and second planes being substantially parallel to one another; and transferring signals in said first frequency range from said waveguide component to second circuitry with substantially low loss and substantially high impedance matching; and transferring signals in said second frequency range from said waveguide component to first circuitry with substantially low loss and substantially high impedance matching. - View Dependent Claims (23, 24)
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25. A method for receiving radio frequency signals, comprising:
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receiving signals having a plurality of frequency ranges; defining a plurality of generally parallel planes; forming a plurality of transmission lines, one of said plurality of transmission lines being formed in each of said plurality of generally parallel planes; forming circuitry for each of said plurality of transmission lines to define substantially low impedances for all of said plurality of frequency ranges except for a frequency range to be carried by the corresponding transmission line; and coupling said signals to said plurality of transmission lines so that signals with said plurality of frequency ranges are received and distributed with substantially decreased reflection and substantially high impedance matching by said plurality of transmission lines.
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Specification