Electronic digital logic circuitry – Superconductor – Function of and – or – nand – nor – or not
Reexamination Certificate
2008-04-22
2008-04-22
Le, Don (Department: 2819)
Electronic digital logic circuitry
Superconductor
Function of and, or, nand, nor, or not
C326S038000, C326S093000, C326S006000
Reexamination Certificate
active
07362125
ABSTRACT:
Routing and distribution of radio-frequency (RF) signals is commonly achieved in the analog domain. However, improved performance and simplified circuit architectures may be obtained by first digitizing the RF signal, and then carrying out all routing in the digital domain. A new generation of scalable digital switches has been developed, which routes both the data and clock signals together, this being necessary to maintain the integrity of the digitized RF signal. Given the extremely high switching speeds necessary for these applications (tens of GHz), this is implemented using Rapid-Single-Flux-Quantum (RSFQ) logic with superconducting integrated circuits. Such a digital switch matrix may be applied to either the receiver or transmitter components of an advanced multi-band, multi-channel digital transceiver system, and is compatible with routing of signals with different clock frequencies simultaneously within the same switch matrix.
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Gupta Deepnarayan
Kirichenko Alexander F.
Hypres, Inc.
Le Don
Milde & Hoffberg LLP
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