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- Title
Downconverting Module Architectures for High Performance Multipixel Cameras.
- Authors
Palombini, Diego; Jankowski, Maciej; Limiti, Ernesto
- Abstract
Multipixel cameras represent an emerging topology for arrays receivers, improving speed and accuracy of both security scanning systems and radioastronomical sky surveys by means of a matrix of phased elements. Difficulties in the generation and proper distribution to each pixel of the local oscillator signal still limit their use to frequency ranges below a few GHz or at least seriously affect the complexity of the implementable cameras. This work presents a full comparison between two possible system architectures, alternatively based on LO frequency multiplication or subharmonic mixing strategies, aiming to overcome the aforesaid limitations: design and performance of two compact test vehicles in MMIC technology, both operating in the Q-band frequency range with ultrabroadband IF section, are reported.
- Subjects
DIGITAL cameras; PIXELS; DISTRIBUTION (Probability theory); RADIO astronomical techniques; SECURITY systems; IMAGE processing; MONOLITHIC microwave integrated circuit oscillators
- Publication
International Journal of Microwave Science & Technology, 2013, p1
- ISSN
1687-5826
- Publication type
Article
- DOI
10.1155/2013/586158