Low Phase Noise Signal Generation

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: N0017803C1098
Agency Tracking Number: 031-1175
Amount: $69,815.00
Phase: Phase I
Program: SBIR
Awards Year: 2003
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
PIEZO TECHNOLOGY, INC.
2525 Shader Road, Orlando, FL, 32804
DUNS: 053393898
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 David Symonds
 Director, Oscillator Prod
 (407) 298-2000
 dsymonds@piezotech.com
Business Contact
 Robert Smythe
Title: Senior Vice-President, En
Phone: (407) 298-2000
Email: rsmythe@piezotech.com
Research Institution
N/A
Abstract
At the present state of the art it is not feasible to generate a signal directly at the microwave operating frequency having the required short-term or long-term stability The best is a high-performance crystal oscillator, usually realized as an ovenizedcrystal oscillator (OCXO). The OCXO forms the master oscillator for the system; from it, all required system frequencies are derived coherently by a combination of frequency multipliers, phase-locked oscillators, mixers, filters, and frequencysynthesizers. If these components and subsystems are properly designed, both the short-term and long-term stability limitation is due to the master crystal oscillator. This proposal deals with methods for improving the master crystal oscillator.Two types of phase noise must be distinguished from one another: quiescent phase noise, arising from the various components of the system when stationary, and vibration-induced phase noise In a well-designed oscillator, the acceleration sensitivity isalmost entirely due to the resonator(s).This proposal deals with improvements to the master crystal oscillator. Crystal oscillator phase noise can be improved by 1) resonator improvements, 2) use of multiple resonators, or 3) use of multiple oscillators. In addition, 4) oscillator phase noisemight be reduced by phase noise negative feedback. The products resulting from this topic will make available low noise reference oscillators for use in radar exciters and other systems that require a frequency source with low phase noise under both static and vibratory environments.

* information listed above is at the time of submission.

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