Passive phased injection locked circuit
AssigneeCircuit Seed, LLC
InventorsSusan Marya Schober, Robert C. Schober, Herbert Shapiro
Life of this patent
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Abstract
The present invention relates to passive phased injection locked circuit and ring-based voltage controlled oscillators. passive phased injection locked circuit comprises first and second transmission lines, each has a plurality of discrete elements, that are operative to deley the phase of AC signal. Between the first and second transmission lines, a capacitor network is formed to advance the phases of the AC signal in concert along the transmission lines. For the ring-based voltage controlled oscillators, each of the first and second transmission lines has an odd number of discrete elements.
Claims5
A passive phased injection locked circuit comprising:
- a. first and second transmission lines, said first transmission line comprises a plurality of discrete elements, and said second transmission line comprises a corresponding number of discrete elements to the first transmission line;
- i. each of said first and second transmission lines comprising
- 1) an input and an output;
- and
- 2) said discrete elements connected electrically in series between said input and said output, each of said discrete elements being operative to delay the phase of AC signal applied to said input;
- b. a plurality of capacitors, each of said capacitors being connected between an output of one of the elements in said first or second transmission line to the input of the next higher corresponding one of the elements in the other transmission line to form a network between said first and second transmission lines, said network being operative to advance the phases of said applied AC signal in concert along said transmission line.
A voltage controlled oscillator comprising first and second ring oscillators, said first ring oscillators comprising more than one odd number of inverter stages, and second ring oscillators comprising a corresponding number of inverter stages to the first oscillators, said inverter stages of each of said first and second ring oscillators being connected electrically in series between an input and an output of said each of said first and second ring oscillators, the output of each of said first and second ring oscillators being electrically connected to the input thereof, the input of each of said inverters of one of said first or second ring oscillators having a connection to the output of the corresponding one of said inverters of the other one of first and second ring oscillators, said connection comprising a capacitor for forming a capacitor network between said first and second ring oscillators operative to tuned said first and second ring oscillators responsive to a first signal applied to said input of the first ring oscillators or second signal applied to said input of the second ring oscillators.
Dependencies are inferred from the claim text.