Circuits, systems and methods for frequency translation and signal distribution
First Claim
1. A downconverter circuit for a signal distribution and frequency translation system, the downconverter circuit having first and second inputs coupled to receive respective first and second input signals, and an output for providing a downconverted output signal, the downconverter circuit comprising;
- a mixer circuit having a first input coupled to a reference frequency source, a second input, and an output coupled to the downconverter circuit output;
a first switch having a first port coupled to the downconverter circuit first input, and a second port switchably coupled to the mixer circuit second input; and
a second switch having a first port coupled to the downconverter circuit second input, and a second port switchably coupled to the mixer circuit second input,wherein the first and second switches are complementarily-switched.
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Accused Products
Abstract
Circuits systems and methods for frequency translation and signal distribution includes a downconverter circuit having first and second inputs coupled to receive respective first and second input signals, and an output for providing a downconverted output signal. The downconverter circuit includes a mixer circuit, a first switch, and a second switch. The mixer includes a first input coupled to a reference source, a second input, and an output coupled to the downconverter circuit output. The first switch includes a first port coupled to the downconverter circuit first input, and a second port switchably coupled to the mixer circuit second input. The second switch includes a first port coupled to the downconverter circuit second input, and a second port switchably coupled to the mixer circuit second input.
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Citations
22 Claims
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1. A downconverter circuit for a signal distribution and frequency translation system, the downconverter circuit having first and second inputs coupled to receive respective first and second input signals, and an output for providing a downconverted output signal, the downconverter circuit comprising;
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a mixer circuit having a first input coupled to a reference frequency source, a second input, and an output coupled to the downconverter circuit output; a first switch having a first port coupled to the downconverter circuit first input, and a second port switchably coupled to the mixer circuit second input; and a second switch having a first port coupled to the downconverter circuit second input, and a second port switchably coupled to the mixer circuit second input, wherein the first and second switches are complementarily-switched.
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2. A downconverter circuit for a signal distribution and frequency translation system, the downconverter circuit having first and second inputs coupled to receive respective first and second input signals, and an output for providing a downconverted output signal, the downconverter circuit comprising;
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a mixer circuit having a first input coupled to a reference frequency source, a second input, and an output coupled to the downconverter circuit output; a first switch having a first port coupled to the downconverter circuit first input, and a second port switchably coupled to the mixer circuit second input; a second switch having a first port coupled to the downconverter circuit second input, and a second port switchably coupled to the mixer circuit second input; and at least one buffer amplifier coupled between the downconverter circuit first input and the first switch, at least one buffer amplifier coupled between the downconverter circuit second input and the second switch, and at least one buffer amplifier coupled between the mixer circuit output and the downconverter circuit output.
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3. A downconverter circuit for a signal distribution and frequency translation system, the downconverter circuit having first and second inputs coupled to receive respective first and second input signals, and an output for providing a downconverted output signal, the downconverter circuit comprising;
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a mixer circuit having a first input coupled to a reference frequency source, a second input, and an output coupled to the downconverter circuit output; a first switch having a first port coupled to the downconverter circuit first input, and a second port switchably coupled to the mixer circuit second input; a second switch having a first port coupled to the downconverter circuit second input, and a second port switchably coupled to the mixer circuit second input; a third switch having a first port coupled to the mixer circuit output, and a second port switchably coupled to the downconverter circuit output; and a fourth switch having a first port coupled to the downconverter circuit first input, and a second port switchably coupled to the downconverter circuit output. - View Dependent Claims (4)
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5. A frequency translation and signal distribution system, comprising:
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a first signal matrix comprising at least one input port operable to receive a signal and a plurality of output ports, the first signal matrix operable to couple a signal received on said at least one input port to any of the plurality of said output ports; a second signal matrix comprising at least one input port operable to receive a signal and a plurality of output ports, the second signal matrix operable to couple a signal received on said at least one input port to any of the plurality of said output ports; and a plurality of downconverter circuits, each downconverter having a first input coupled to a respective one of the first matrix output ports, a second input coupled to a respective one of the second matrix output ports, and an output port for providing a downconverted output signal, the downconverter circuit comprising; a mixer circuit having a first input coupled to a reference frequency source, a second input, and an output coupled to the downconverter circuit output; a first switch having a first port coupled to the downconverter circuit first input, and a second port switchably coupled to the mixer circuit second input; and a second switch having a first port coupled to the downconverter circuit second input, and a second port switchably coupled to the mixer circuit second input. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. In a downconverter circuit having a mixer circuit, and first and second switches, a method for downconverting, to an output frequency, each of the at least first and second signals supplied to the downconverter circuit, the method comprising:
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supplying said at least first and second signals to respective at least first and second switches of said downconverter circuit; controlling the first switch to a closed state to switchable couple the first signal to the mixer circuit and controlling the second switch to an open state, whereby said mixer circuit downconverts the first signal to the downconverted output frequency; and controlling the first switch to an open state, and the second switch to a closed state to switchable couple the second signal to the mixer circuit, whereby said mixer circuit downconverts the second signal to the downconverted output frequency. - View Dependent Claims (21, 22)
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Specification