Mixed Signal MMIC for 10GHz Multifunction Frequency Syntheses and Modulations

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911QX-04-C-0039
Agency Tracking Number: A032-1439
Amount: $69,811.00
Phase: Phase I
Program: SBIR
Awards Year: 2004
Solicitation Year: 2003
Solicitation Topic Code: A03-040
Solicitation Number: 2003.2
Small Business Information
500 Wynn Dr. Suite 314, Huntsville, AL, 35816
DUNS: 196595607
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Bill Fieselman
 Program Manager
 (256) 722-7200
Business Contact
 Robert Calahan
Title: Business Manager
Phone: (256) 722-7200
Email: rcalahan@amtec-corp.com
Research Institution
This proposal presents an innovative, affordable, and feasible architecture of frequency synthesis and modulation based on SiGe high-speed MMIC designs. The architecture includes an ultrahigh-speed direct digital synthesizer (DDS) with a maximum clock frequency of 10GHz to synthesize and modulate the intermediate frequency (IF) of 1GHz and above. It uses a low-noise phase lock loop (PLL) to generate both the DDS clock and the carrier frequency of 10GHz and above. The PLL synthesizer includes a quadrature voltage controlled oscillator (VCO) to generate the quadrature carriers without using a high loss and narrow-band poly-phase network. The high-speed DDS includes a patent pending high-order delta-sigma noise shaper and a sinusoidal weighted digital-to-analog converter (DAC) with 15-bit resolution to achieve better than -60dB spectral purity. The cosine weighted DAC eliminates the sine and cosine look-up table, which is a speed and area bottleneck for high-speed DDS implementations. The DDS modulation waveform configurations include chirp, step frequency, FM, MSK, PM, AM, QAM, and other hybrid modulations. The modulated IF frequency is mixed with the carrier frequency using quadrature mixers with image rejection. The proposed architecture can be implemented in high-speed SiGe processing. Some critical blocks have been implemented and fabricated using IBM 5HP SiGe.

* Information listed above is at the time of submission. *

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