R-C signal dividers and signal filters
First Claim
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1. A signal divider comprising:
- first and second wavepaths coupled at one end to a common input port and at their other ends to a summing network to form a sum signal, and to a differencing network to form a difference signal;
and phase shift means whose passive elements consist of resistive and capacitive elements disposed along at least one of said wavepaths for producing a nonlinear differential phase shift between signals in said two wavepaths.
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Abstract
A class of signal dividers and signal filters is disclosed comprising first and second wavepaths coupled at one end to a common input port and at their other ends to a summing network to form a sum signal, and to a differencing network to form a differencing signal. Phase shift means are included along at least one wavepath for producing a differential phase shift between signals in said two wavepaths. In order that such devices be capable of operation at very low frequencies (i.e., a few Hertz), be physically small, and be capable of being made by means of integrated circuit techniques, the phase shifters are made solely of R-C passive elements, or of other devices that can be readily integrated.
15 Citations
7 Claims
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1. A signal divider comprising:
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first and second wavepaths coupled at one end to a common input port and at their other ends to a summing network to form a sum signal, and to a differencing network to form a difference signal; and phase shift means whose passive elements consist of resistive and capacitive elements disposed along at least one of said wavepaths for producing a nonlinear differential phase shift between signals in said two wavepaths. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A signal divider comprising:
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first and second all-pass transversal equalizers having nonlinear phase shift characteristics Θ
(p) and α
(p), respectively;the input end of each of said equalizers being coupled to a common input port; the other output end of each of said equalizers being coupled to a summing network to form a sum signal, and to a differencing network to form a difference signal; said sum difference signals constituting the output signals from said divider.
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Specification