Patent
Phase shifting applications of universal frequency translation
Martin R. Johnson,Jonathan S. Jensen,Robert T. Short,Jamison L. Young,David F. Sorrells,Michael J. Bultman,Robert W. Cook,Richard C. Looke,Charley D. Moses +8 more
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TLDR
In this article, a universal frequency translation module (UFT) frequency translates an electromagnetic (EM) input signal by sampling the EM input signal according to a periodic control signal (also called on aliasing signal).Abstract:
A universal frequency translation module (UFT) frequency translates an electromagnetic (EM) input signal by sampling the EM input signal according to a periodic control signal (also called on aliasing signal). By controlling the relative sampling time, the UFT module implements a relative phase shift during frequency translation. In other words, a relative phase shift can be introduced in the output signal by sampling the input signal at one point in time relative to another point in time. As such, the UFT module can be configured as an integrated frequency translator and phase-shifter. This includes the UFT module as an integrated down-converter and phase shifter, and the UFT module as an integrated up-converter and phase shifter. Applications of universal frequency translation and phase shifting include phased array antennas that utilize integrated frequency translation and phase shifting technology to steer the one or more main beams of the phased array antenna.read more
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Patent
Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same
David F. Sorrells,Michael J. Bultman,Robert W. Cook,Richard C. Looke,Charley D. Moses,Gregory S. Rawlins,Michael W. Rawlins +6 more
TL;DR: In this paper, the authors described a system for down-converting and up-concussing an EM signal by recursively operating on approximate half cycles (½, 1½, 2½, etc.) of the carrier signal.
Patent
Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology
TL;DR: In this paper, a communication system comprising a multi-protocol, multi-bearer sub-system is described, which is a universal platform module that can transmit and receive one or more information signals in one or multiple protocols using one-or more bearer services.
Patent
Method and apparatus for a parallel correlator and applications thereof
TL;DR: A fast correlator transform (FCT) algorithm and methods and systems for implementing same, correlate an encoded data word (X0-XM-1) with encoding coefficients (C0-CM-1), wherein each coefficient has k possible states, and wherein M is greater than 1 as mentioned in this paper.
Patent
Method and system for frequency up-conversion
TL;DR: In this article, a method and system for up-converting a signal with a lower frequency to a higher frequency is described, where a switch with an oscillating signal is connected to a bias signal.
Patent
Applications of universal frequency translation
TL;DR: In this article, frequency translation and applications of same are described, including, but not limited to, frequency down-conversion, frequency up-concussions, enhanced signal reception, unified downconversion and filtering, and combinations of same.
References
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Statistics of atomic frequency standards
TL;DR: In this paper, a theoretical analysis of the relationship between the expectation value of the standard deviation of the frequency fluctuations for any finite number of data samples and the infinite time average value of a standard deviation is presented.
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Picosecond optoelectronic switching and gating in silicon
TL;DR: In this paper, the authors measured the switching speed of two transmission gates in tandem, each having an aperture time of 15 psec, by correlating the response of two transceivers in tandem.
Patent
Method and apparatus for adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines
P.S. Chow,John M. Cioffi +1 more
TL;DR: In this article, the authors propose an adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines wherein the initial optimal transmission bandwidth is identified based on initial signal-to-noise ratio (SNR) estimates of the orthogonal carriers of the multic-carrier system.
Patent
Method and apparatus for multiple access between transceivers in wireless communications using ofdm spread spectrum
Michel Fattouche,Hatim Zagloul +1 more
TL;DR: In this article, a first frame of information is multiplexed over a number of wideband frequency bands at a first transceiver, and the information transmitted to a second transceiver.
Patent
Multi-band, multi-mode spread-spectrum communication system
TL;DR: In this article, a technique for spread-spectrum communication which uses more than one mode and multiple frequency bands is presented. But the frequency band onto which spread-Spectrum signals are encoded may be changed upon a change in environment or other control trigger, such as establishment or de-establishment of communication with a private access network.