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Patent 7902931 Click For Printable Version of This Patent
Patent Information:  USPTO Site Listing

Patent Number: 7902931
Case ID: 0
Patent Title: Wideband non-linear circuits for implementation in frequency channel separation
Status: ACTIVE
Status Date: 11/21/2011 2:16:58 PM
Issue Date: 3/8/2011
Filed Date: 2/24/2009
Serial #: 2/391,508
Assignee Name: The United States of America as represened by the Secretary of the Navy (Washington, DC)
Inventor(s): In, Visarath , Longhini, Patrick , Kho, Yong An , Neff, Joseph D. , Bulsara, Adi R. , Gordon, Frank E. , Liu, Norman , Naik, Suketu
Lab Information:  View Lab Profile

Lab Name: SPAWAR Systems Center, Pacific
Location: 53560 Hull Street
San Diego, CA 92152-5001
Contact: Contact Lab About This Patent
   
Abstract:
A device includes a plurality of channel-capture circuits. Each circuit may include an array of N non-linear oscillators, wherein N.gtoreq.3, circularly connected to each other in series such that unidirectional signal flow occurs between the oscillators. Each circuit may be configured to capture a respective channel signal from a wideband signal containing a plurality of channel signals and convert its captured channel signal to a lower frequency. Each oscillator may include an oscillator input configured to receive an output signal from another oscillator, an oscillator output configured to provide an output for an input of another oscillator, a frequency capture input configured to receive at least a portion of the wideband signal, at least two amplifiers, and a control capacitor coupled to the output of the amplifiers. An analog-to-digital converter may be coupled to the output of each channel-capture circuit.
Claims:
We claim:

1. A device comprising: a plurality of channel-capture circuits, each channel-capture circuit comprising an array of N non-linear oscillators, wherein N.gtoreq.3, circularly connected to each other in series such that unidirectional signal flow occurs between the oscillators wherein each channel-capture circuit is configured to capture a channel signal from a wideband signal containing a plurality of channel signals and convert its captured channel signal to a lower frequency.

2. The device of claim 1, wherein each oscillator of the array of N non-linear oscillators comprises a non-linear, bi-stable, over-damped oscillator.

3. The device of claim 1, wherein each oscillator of the array of N non-linear oscillators comprises: an oscillator input configured to receive an output signal from another oscillator; an oscillator output configured to provide an output for an input of another oscillator; and a frequency capture input configured to receive  . . . . More