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Broadband Quadrature Mixers and I/Q Mismatch Reduction

Award Information
Agency: Department of Defense
Branch: Defense Microelectronics Activity
Contract: H94003-11-P-1105
Agency Tracking Number: 11-1A4
Amount: $99,626.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: DMEA102-002
Solicitation Number: 2010.2
Solicitation Year: 2010
Award Year: 2010
Award Start Date (Proposal Award Date): 2010-12-16
Award End Date (Contract End Date): 2011-07-15
Small Business Information
12834 Earhart Ave,
Auburn, CA 95602
United States
DUNS: 139745181
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Chris Saint
 VP Engineering
 (530) 823-9786
Business Contact
 Irshad Rasheed
Title: CEO/President
Phone: (530) 368-2498
Research Institution

Silicon on Sapphire technology offer several advantages over bulk CMOS and BiCMOS technologies for the design of RFICs (RF Integrated Circuits) for the System on Chip radio applications. These advantages include superior radiation hardness, improved isolation between circuits, higher efficiency amplifiers, and more bandwidth per cost. In the last few years, RFIC designers have favored are Zero-IF and Low-IF architectures for these transceivers, due to the following main advantages over heterodyne architectures: 1. Eliminates the need to filter image of the receive band for Zero-IF architectures 2. Eliminates the IF section and its components 3. In many cases eliminates the off chip filtering after the LNA These new architectures all use quadrature mixing for which the key blocks are IQ modulators and demodulator which present an additional design challenges in terms of maintaining a low error-vector magnitude (EVM). One of the primary sources of impairments of EVM in the IQ modulators & demodulators is the gain and phase I/Q imbalance. Tahoe RF proposes a unique architecture for mitigating the impairments due to the gain and phase imbalances in the IQ modulators & demodulators and provides a new calibration method without the use of digital DSP, while maintaining low power consumption.

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

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