Electronic digital logic circuitry – Having logic levels conveyed by signal frequency or phase
Patent
1994-03-14
1996-06-18
Westin, Edward P.
Electronic digital logic circuitry
Having logic levels conveyed by signal frequency or phase
327 3, 327355, H03K 1900
Patent
active
055281745
ABSTRACT:
Any one of several improved devices capable of implementing microwave phase logic (MPL) operating at gigabits per second rates comprises either at least one of means performing the function of a multigate microwave-monolithic-integrated-circuit (MMIC) field-effect transistor (FET), or a pair of doubly-balanced mixers, in which each of the mixers includes an RF port, a local-oscillator (LO) port and an IF port, and the IF port of a first of the doubly-balanced mixers is directly connected to the IF port of a second of the doubly-balanced mixers. The first of the doubly-balanced mixers is operative as a demodulator for deriving (1) a given polarity at its IF port in response to substantially in-phase signals of the same first specified frequency being respectively applied to its RF and LO ports and (2) a polarity opposite to the given polarity at its IF port in response to substantially out-of-phase signals of the same first specified frequency being respectively applied to its RF and LO ports, and the second of the doubly-balanced mixers is operative as a modulator for deriving (3) a signal of a given phase and second specified frequency at its RF port in response to a signal of the second specified frequency being applied to its LO port and the given polarity being applied its IF port and (4) a signal of a phase substantially 180.degree. out-of-phase with the given phase and second specified frequency at its RF port in response to a signal of the second specified frequency applied to its LO port and the polarity opposite to the given polarity being applied its IF port.
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Kleinfelder, W.; Parametron Logic Phase to Amplitude Converter, IBM Technical Disclosure Bulletin, vol. 5, #10, Mar. 1963.
Sanders Andrew
Westin Edward P.
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