Doppler-inspired, high-frequency signal generation and up-conversion
First Claim
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1. A Doppler-inspired high frequency generator, comprising:
- a first transmission line for a first signal from a first input, the first transmission line having a plurality of first nodes;
a second transmission line for a second signal from a second input, the second transmission line having a plurality of second nodes;
a plurality of switches, each switch connected to a corresponding one of the plurality of second nodes such that the second signal controls a switching operation of the plurality of switches, each switch further connected to a corresponding one of the plurality of first nodes; and
a signal combiner receiving the first signal according to the switching operation of the plurality of switches,wherein the first input of the first transmission line and the second input of the second transmission line are configured such that the first signal travels the first transmission line in an opposite direction as the second signal traveling the second transmission line.
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Abstract
Doppler-inspired methods for signal generation and frequency up-conversion are provided that are compatible with CMOS technology. In accordance with an embodiment, a circuit is provided that includes two input signals that can propagate on artificial transmission lines in opposite directions, resembling the relative movement of source and observer in Doppler frequency shift; and an output signal combiner. By controlling the characteristics of the transmission lines and the input signal frequencies, the harmonic generation of active devices is utilized and combined to provide the desired high-frequency component at the output.
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Citations
21 Claims
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1. A Doppler-inspired high frequency generator, comprising:
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a first transmission line for a first signal from a first input, the first transmission line having a plurality of first nodes; a second transmission line for a second signal from a second input, the second transmission line having a plurality of second nodes; a plurality of switches, each switch connected to a corresponding one of the plurality of second nodes such that the second signal controls a switching operation of the plurality of switches, each switch further connected to a corresponding one of the plurality of first nodes; and a signal combiner receiving the first signal according to the switching operation of the plurality of switches, wherein the first input of the first transmission line and the second input of the second transmission line are configured such that the first signal travels the first transmission line in an opposite direction as the second signal traveling the second transmission line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of high frequency signal generation from a lower frequency signal source, the method comprising:
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applying a first signal to a first transmission line at a first input, the first transmission line having a plurality of first nodes; applying a second signal to a second transmission line at a second input, the second transmission line having a plurality of second nodes; sampling the first signal using a plurality of switches, wherein; each switch is connected to a corresponding one of the plurality of second nodes such that the second signal controls a switching operation of the plurality of switches, each switch is further connected to a corresponding one of the plurality of first nodes, and the first signal is propagated along the first transmission line in a first direction and the second signal is propagated along the second transmission line in a second direction opposite the first direction such that the second signal controls a switching operation of a switch connected to a first node located farthest from the first input of the first transmission line before controlling a switching operation of another switch connected to a first node located closer to the first input; and combining the sampled first signals output from the plurality of switches. - View Dependent Claims (10)
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11. A method of high frequency signal generation from a lower frequency signal source, the method comprising:
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applying a first signal and a second signal to a first transmission line such that a sum of the first signal and the second signal is applied to each of a plurality of nonlinear devices connected to corresponding nodes along the first transmission line, wherein the first signal propagates in a first direction along the first transmission line and the second signal propagates in a second direction along the first transmission line opposite the first direction; and combining signals output from the plurality of nonlinear devices using a power combiner connected to outputs of the plurality of nonlinear devices. - View Dependent Claims (12, 13, 14, 15)
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16. A Doppler-inspired high frequency generator, comprising:
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a first transmission line; a plurality of nonlinear devices connected to a corresponding plurality of nodes of the first transmission line, wherein the plurality of nonlinear devices receive a sum of two signals having different phase shifts traveling the first transmission line, wherein the two signals having different phase shifts are provided by a first signal traveling the first transmission line in one direction and a second signal traveling the first transmission line in an opposite direction; and a power combiner connected to outputs of the plurality of nonlinear devices. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification