DocumentCode
2354592
Title
P2D-8 An I/Q Demodulator with Phase Shifter for Beamforming Applications
Author
Brunner, Eberhard
Author_Institution
Analog Devices, Inc., Beaverton, OR
fYear
2006
fDate
2-6 Oct. 2006
Firstpage
1647
Lastpage
1650
Abstract
The I/Q (quadrature) demodulator and phase shifter described in this paper allow a smaller, simpler and cheaper implementation of a continuous wave (CW) Doppler beamformer for ultrasound compared to existing delay line based solutions. It could also be used in radar or other beamforming applications like "smart or adaptive" antennas. The primary challenge in this design was the realization of the phase shift function and how to maintain a dynamic range of 160 dB/Hz with a power consumption of less than 200 mW per channel. A key architectural change allowed the desired performance to be achieved. The design described has a patent pending
Keywords
acoustic signal processing; demodulators; phase shifters; ultrasonic devices; I/Q demodulator; beamforming applications; continuous wave Doppler beamformer; phase shift function; phase shifter; quadrature demodulator; Adaptive arrays; Array signal processing; Delay lines; Demodulation; Doppler radar; Dynamic range; Phase shifters; Radar antennas; Radar applications; Ultrasonic imaging;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 2006. IEEE
Conference_Location
Vancouver, BC
ISSN
1051-0117
Print_ISBN
1-4244-0201-8
Electronic_ISBN
1051-0117
Type
conf
DOI
10.1109/ULTSYM.2006.415
Filename
4152271
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